Sonendo (SONX) 10-Q 10 May 22 2022 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2022	May 04, 2022
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Entity Registrant Name	Sonendo, Inc.
Entity Central Index Key	0001407973
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Current Fiscal Year End Date	--12-31
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Small Business	true
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		26,427,325
Entity File Number	001-40988
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-5041718
Entity Address, Address Line One	26061 Merit Circle
Entity Address, Address Line Two	Suite 102
Entity Address, City or Town	Laguna Hills
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92653
City Area Code	949
Local Phone Number	766-3636
Document Quarterly Report	true
Document Transition Report	false
Title of 12(b) Security	Common stock, par value $0.001 per share
Trading Symbol	SONX
Security Exchange Name	NYSE

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 66,054	$ 84,641
Accounts receivable, net	2,702	2,516
Inventory	10,134	8,150
Prepaid expenses and other current assets	3,968	3,552
Total current assets	82,858	98,859
Property and equipment, net	2,177	2,366
Operating lease right-of-use assets	2,478	2,746
Intangible assets, net	2,790	2,956
Goodwill	8,454	8,454
Other assets	118	118
Total assets	98,875	115,499
Current liabilities:
Accounts payable	2,235	3,061
Accrued expenses	4,416	4,758
Accrued compensation	2,513	3,376
Operating lease liabilities	966	975
Other current liabilities	1,957	2,482
Total current liabilities	12,087	14,652
Operating lease liabilities, net of current	1,474	1,730
Term loan, net of current	26,620	26,496
Other liabilities	517	558
Total liabilities	40,698	43,436
Commitments and contingencies (Note 8)
Stockholders' deficit:
Preferred stock, $0.001 par value; authorized -10,000,000 shares; issued and outstanding - none
Common stock, $0.001 par value; authorized - 500,000,000 shares; issued - 26,465,797 shares as of March 31,2022 and 26,383,225 shares as of December 31, 2021; outstanding - 26,419,108 shares as of March 31, 2022 and 26,336,536 shares as of December 31, 2021	26	26
Additional paid-in-capital	385,768	384,132
Accumulated deficit	(327,566)	(312,044)
Stockholders' deficit before treasury stock	58,228	72,114
Less: Treasury stock	(51)	(51)
Total stockholders' equity	58,177	72,063
Total liabilities and stockholders' equity	$ 98,875	$ 115,499

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares outstanding	0	0
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	26,465,797	26,383,225
Common stock, shares outstanding	26,419,108	26,336,536

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Total revenue	$ 9,033	$ 7,427
Cost of sales	6,754	5,685
Gross profit	2,279	1,742
Operating expenses:
Selling, general and administrative	11,985	6,524
Research and development	4,850	5,046
Change in fair value of contingent earnout		14
Total operating expenses	16,835	11,584
Loss from operations	(14,556)	(9,842)
Interest and financing costs, net	(966)	(1,064)
Loss before income tax expense	(15,522)	(10,906)
Net loss and comprehensive loss	$ (15,522)	$ (10,906)
Net loss per share attributable to common stock - basic and diluted	$ (0.59)	$ (9.05)
Weighted-average shares outstanding - basic and diluted	26,405,252	1,205,314
Product
Total revenue	$ 7,203	$ 5,809
Cost of sales	6,078	5,075
Gross profit	1,125	734
Operating expenses:
Selling, general and administrative	11,526	6,066
Research and development	4,431	4,639
Change in fair value of contingent earnout		14
Total operating expenses	15,957	10,719
Loss from operations	(14,832)	(9,985)
Software
Total revenue	1,830	1,618
Cost of sales	676	610
Gross profit	1,154	1,008
Operating expenses:
Selling, general and administrative	459	458
Research and development	419	407
Total operating expenses	878	865
Loss from operations	$ 276	$ 143

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) (unaudited) - USD ($) $ in Thousands	Total	Convertible Preferred Stock	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Deficit
Convertible Preferred Stock Beginning balance, Shares at Dec. 31, 2020		17,031,887
Convertible Preferred Stock Beginning balance at Dec. 31, 2020		$ 281,342
Beginning balance, Shares at Dec. 31, 2020			1,200,335
Beginning balance at Dec. 31, 2020	$ (253,891)		$ 2	$ (51)	$ 9,703	$ (263,545)
Exercise of stock options	33				33
Exercise of stock options, Shares			12,797
Stock-based compensation	494				494
Net loss	(10,906)					(10,906)
Convertible Preferred Stock Ending balance, Shares at Mar. 31, 2021		17,031,887
Convertible Preferred Stock Ending balance at Mar. 31, 2021		$ 281,342
Ending balance, Shares at Mar. 31, 2021			1,213,132
Ending balance at Mar. 31, 2021	(264,270)		$ 2	(51)	10,230	(274,451)
Beginning balance, Shares at Dec. 31, 2021			26,336,536
Beginning balance at Dec. 31, 2021	72,063		$ 26	(51)	384,132	(312,044)
Employee stock plans	$ 242				242
Employee stock plans, Shares			82,572
Exercise of stock options, Shares	61,438
Stock-based compensation	$ 1,394				1,394
Net loss	(15,522)					(15,522)
Ending balance, Shares at Mar. 31, 2022			26,419,108
Ending balance at Mar. 31, 2022	$ 58,177		$ 26	$ (51)	$ 385,768	$ (327,566)

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net loss	$ (15,522)	$ (10,906)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	246	404
Amortization intangible assets	166	133
Amortization of right-of-use lease assets	269	232
Stock-based compensation	1,394	494
Amortization of debt issuance costs	124	218
Change in fair value of contingent earnout		14
Changes in operating assets and liabilities:
Accounts receivable, net	(186)
Inventory	(1,984)	(872)
Prepaid expenses and other assets	(416)
Accounts payable	(826)	(168)
Accrued expenses and other liabilities	(423)	(1,529)
Deferred revenue	(24)	21
Accrued compensation	(863)	(1,108)
Net cash used in operating activities	(18,045)	(13,067)
Cash flows from investing activities:
Purchases of property and equipment	(56)	(74)
Net cash used in investing activities	(56)	(74)
Financing activities:
Payment of common stock issuance costs	(598)
Proceeds from exercise of common stock options	242	33
Payment of contingent earnout	(117)	(667)
Principal repayments on finance lease	(13)	(11)
Net cash used in financing activities	(486)	(645)
Net decrease in cash and cash equivalents	(18,587)	(13,786)
Cash and cash equivalents at beginning of period	84,641	51,722
Cash and cash equivalents at end of period	66,054	37,936
Cash paid for:
Interest	$ 848	850
Supplemental schedule of non-cash investing and financing activities:
Operating lease right-of-use assets obtained in exchange for lease liabilities		$ 168

Organization and Basis of Prese

Organization and Basis of Presentation	3 Months Ended
	Mar. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Basis of Presentation	1. Organization and Basis of Presentation Description of Business Sonendo, Inc. (“Sonendo” or the “Company”) was incorporated in June 2006 pursuant to the laws of the State of Delaware under the name Dentatek Corporation. In March 2011, the Company changed its name to Sonendo, Inc. The Company is a medical technology company that has developed and is commercializing the GentleWave System to treat tooth decay. The Company’s principal market is the United States. The Company’s products include the GentleWave System, which is cleared by the United States (“U.S.”) Food and Drug Administration (“FDA”) for sale in the U.S., along with the system’s sterilized, single-use procedure instruments ("PIs"). In addition, the Company offers practice management software to enable an integrated digital office for dental practitioners. Basis of Presentation The Company’s financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and pursuant to Form 10-Q and Article 10 of Regulation S-X of the Securities and Exchange Commission (“SEC”) on a consistent basis with the Company’s annual financial statements and in the opinion of management, reflect all adjustments, which include only normal recurring adjustments, considered necessary for a fair statement of the Company’s financial information. Accordingly, the accompanying unaudited condensed consolidated financial statements do not include all of the information and notes required by GAAP for complete financial statements. The condensed consolidated balance sheet as of December 31, 2021 included herein was derived from the audited financial statements as of that date. The results of operations included in these condensed consolidated financial statements are not necessarily indicative of the results of operations to be expected for the year, any other interim period, or for any other future annual or interim period. Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with U.S. GAAP have been condensed, consolidated, or omitted. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2021 filed with the SEC on March 23, 2022. Initial Public Offering and Reverse Stock Split On October 20, 2021, the Company’s Board of Directors (the "Board") approved an amendment to the Company’s certificate of incorporation to effect a reverse split of shares of the Company’s common stock and convertible preferred stock on a 1-for- 1.825 basis (the “Reverse Stock Split”). The par values of the common stock and convertible preferred stock were not adjusted as a result of the Reverse Stock Split. All references to common stock, options to purchase common stock, convertible preferred stock, warrants and forward obligation issued for preferred stock, share data, per share data and related information contained in the unaudited condensed consolidated financial statements have been retrospectively adjusted to reflect the effect of the Reverse Stock Split for all periods presented. Outstanding stock options were proportionately reduced and the respective exercise prices, if applicable, were proportionately increased. The Reverse Stock Split was effected on October 22, 2021. On November 2, 2021, the Company completed its initial public offering (“IPO”) of 7.8 million shares of its common stock at a public offering price of $ 12.00 per share. The aggregate net proceeds from the offering, after deducting underwriting discounts and commissions and other offering expenses, were $ 83.8 million . On November 2, 2021, the Company amended and restated its certificate of incorporation to provide for, among other things, the Company’s authorized capital stock to consist of 500,000,000 shares of common stock, par value $ 0.001 per share, and 10,000,000 shares of preferred stock, par value $ 0.001 per share. In addition, upon the closing of the IPO, all 17,031,887 outstanding shares of the Company’s convertible preferred stock were converted into an equal number of shares of common stock, 224,842 shares of common stock were issued in connection with the settlement of the outstanding forward obligation, and warrants to purchase 331,503 shares of convertible preferred stock were converted into equal number of warrants to purchase shares of common stock. The amended and restated certificate of incorporation defines the voting rights, dividends, liquidation, rights and preferences of each class of stock. Liquidity and Management’s Plans As of March 31, 2022, the Company had cash and cash equivalents of $ 66.1 million . The Company has a limited operating history, and the revenue and income potential of the Company’s business and market are unproven. The Company has experienced net losses and negative cash flows from operations since its inception and as of March 31, 2022 had an accumulated deficit of $ 327.6 million . During the three months ended March 31, 2022, the Company incurred net losses of $ 15.5 million and used $ 18.0 million of cash and cash equivalents in operations. The Company will continue to incur significant costs and expenses related to its ongoing operations until it gains market acceptance of products and achieves a level of revenues adequate to support the Company’s operations. The accompanying unaudited condensed consolidated financial statements have been prepared assuming the Company will continue as a going concern, wh ich contemplates the realization of assets and satisfaction of liabilities in the normal course of business. The unaudited condensed consolidated financial statements do not include any adjustments relating to the recoverability and classification of recorded asset amounts or the amounts and classification of liabilities that might result from the outcome of this uncertainty . Based on its current operating plan, the Company expects that its existing cash and cash equivalents, together with anticipated revenue and available debt financing arrangements will be sufficient to fund its operating expenses and capital expenditure requirements for at least 12 months from the date of issuance of the accompanying unaudited condensed consolidated financial statements. If the Company's actual operating expenses significantly exceed its operating plan or its debt financing arrangements become unavailable because certain borrowing requirements are not met (see Note 9), the Company may have to significantly delay or scale back its operations to reduce working capital requirements, and substantial uncertainty would exist with respect to the Company’s ability to continue as a going concern. In addition, the Company would prioritize necessary and appropriate steps to enable the continued operations of the business and preservation of the value of its assets beyond the next 12 months, including but not limited to, actions such as reducing personnel-related costs and delaying or curtailing the Company’s commercial efforts, development activities and other discretionary expenditures that are within the Company’s control. These reductions in expenditures, if required, may have an adverse impact on the Company’s ability to achieve certain of the Company’s planned objectives in fiscal year 2022. COVID-19 The COVID-19 pandemic has negatively impacted our operations, revenue and overall financial condition, and may negatively impact our operations, revenue, and overall financial condition in the future if new and more transmissible vaccine-resistant variants emerge. We continued to experience disruptions to our business during the three months ended March 31, 2022, as a result of customers' continuing reluctance to start root canal procedures in light of the ongoing risk posed by the virus. Our customers, including endodontists, have experienced significant financial hardship and some of them may never fully recover. We also experienced disruptions, and may experience future disruptions, including: delays in capital and clinical sales representatives becoming fully trained and productive; difficulties and delays in dental practitioner outreach and training dental practitioners to use our GentleWave System; travel restrictions; delays in initiation, enrollment and follow-ups of our clinical studies; challenges with maintaining adequate supply from third-party manufacturers of components and finished goods and distribution providers; and access to dental practitioners for training and case support. The COVID-19 pandemic also resulted in, and may in the future result in, significant disruption to the global financial markets, reducing our ability to access capital, which could in the future negatively affect our liquidity. As of March 31, 2022, the COVID-19 pandemic did not trigger any asset impairments for the Company. The duration and ultimate economic impact of the COVID-19 pandemic on our business remains uncertain at this time. We expect that any future restrictions on dental procedures, as a result of COVID-19 or the emergence of any vaccine resistant variant, would have a negative impact on our operations, revenue and overall financial condition. Operating Segments The Company operates two operating and reportable segments: Product and Software. Operating segments are defined as components of an enterprise for which discrete financial information is available and evaluated regularly by the chief operating decision maker, who is the Company’s chief executive officer (“CEO”), for the purpose of allocating resources and assessing performance. Description of the activities within these segments is included in Note 12. Emerging Growth Company Status The Company is an emerging growth company, as defined in the Jumpstart Our Business Startups Act of 2012 (the "JOBS Act"). Under the JOBS Act, emerging growth companies can delay adopting new or revised accounting standards issued subsequent to the enactment of the JOBS Act until such time as those standards apply to private companies. The Company has elected to avail itself of this exemption and, therefore, for new or revised accounting standards applicable to public companies, the Company will be subject to an extended transition period until those standards would otherwise apply to private companies.

Summary Accounting Policies and

Summary Accounting Policies and Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
Summary Accounting Policies and Recent Accounting Pronouncements	2. Summary Accounting Policies and Recent Accounting Pronouncements The accounting policies followed by the Company are set forth in Part II, Item 8, Note 2, Summary of Accounting Policies , of the Notes to Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2021. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make informed estimates, judgements and assumptions that affect the reported amounts in the unaudited condensed consolidated financial statements and disclosures in the accompanying notes, including estimates of probable losses and expenses, as of the date of the accompanying unaudited condensed consolidated financial statements. Management considers many factors in selecting appropriate financial accounting policies and in developing the estimates and assumptions that are used in the preparation of these unaudited condensed consolidated financial statements. Management must apply significant judgment in this process. In addition, other factors may affect estimates, including the expected business and operational changes, the sensitivity and volatility associated with the assumptions used in developing estimates, and whether historical trends are expected to be representative of future trends. The estimation process often may yield a range of potentially reasonable estimates of the ultimate future outcomes, and management must select an amount that falls within that range of reasonable estimates. Actual results could differ materially from the estimates and assumptions used in the preparation of the accompanying unaudited condensed consolidated financial statements under different assumptions or conditions. Revenue Recognition Contracts with Customers The Company recognizes revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those goods and services. Specifically, the Company applies the following five core principles to recognize revenue: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when, or as, the Company satisfies a performance obligation. Product revenue is generated from sales of the GentleWave console and related PIs and accessories. Software revenue is generated from sales of TDO’s The Digital Office endodontist practice management software licenses. The Company’s products are sold primarily in the United States and Canada directly to customers through its field sales force. Performance Obligations The Company’s performance obligations primarily arise from the manufacture and delivery of the GentleWave System, related PIs and accessories, and the delivery or license of TDO software and related ancillary services. Payment terms are typically on open credit terms consistent with industry practice and do not have significant financing components. Consideration may be variable based on volume. The Company considers the individual deliverables in its product offering as separate performance obligations and assesses whether each promised good or service is distinct. The total contract transaction price is determined based on the consideration expected to be received, based on the stated value in contractual arrangements or the estimated cash to be collected in no-contracted arrangements, and is allocated to the identified performance obligations based upon the relative standalone selling prices of the performance obligations. The stand-alone selling price is based on an observable price offered to other comparable customers. The Company estimates the standalone selling price using the market assessment approach considering market conditions and entity-specific factors including, but not limited to, features and functionality of the products and services, geographies, type of customer and market conditions. The Company regularly reviews and updates standalone selling prices as necessary. The consideration the Company receives in exchange for its goods or services is only recognized when it is probable that a significant reversal will not occur. The consideration to which the Company expects to be entitled includes a stated list price, less various forms of variable consideration. The Company estimates related variable consideration at the point of sale, including discounts, product returns, refunds, and other similar obligations. Revenue is recognized over time when the customer simultaneously receives and consumes the benefits provided by the Company’s performance. Revenue is recognized at a point in time if the criteria for recognizing revenue over time are not met, and the Company has transferred control of the goods to the customer. Product revenue is recognized at a point in time when the Company has transferred control to the customer, which is generally when title of the goods transfers to the customer. Software is licensed via delivery to the customer or via a service arrangement under which cloud-based access is provided on a subscription basis (software-as-a-service). When a fixed up-front license fee is received in exchange for the delivery of software, revenue is recognized at the point in time when the delivery of the software has occurred. When software is licensed on a subscription basis, revenue is recognized over the respective license period. The Company also sells extended service contracts on its GentleWave Systems. Sales of extended service contracts are recorded as deferred revenue until such time as the standard warranty expires, which is generally up to two years from the date of sale. Service contract revenue is recognized on a straight-line basis over time consistent with the life of the related service contract in proportion to the costs incurred in fulfilling performance obligations under the service contract. Revenue for technical support and other services is recognized ratably over the performance obligation period. The Company generally does not experience returns. If necessary, a provision is recorded for estimated sales returns and allowances and is deducted from gross product revenue to arrive at net product revenue in the period the related revenue is recorded. These estimates are based on historical sales returns and allowances and other known factors. Actual returns and claims in any future period are inherently uncertain and thus may differ from these estimates. If actual or expected future returns and claims are significantly greater or lower than the reserves established, a reduction or increase to revenue will be recorded in the period in which such a determination is made. All non-income government-assessed taxes (sales and use taxes) collected from the Company’s customers and remitted to governmental agencies are recorded in accrued expenses and other current liabilities until they are remitted to the government agency. The Company has adopted the practical expedient permitting the direct expensing of costs incurred to obtain contracts where the amortization of such costs would occur over one year or less, and it applied to substantially all the Company’s contracts. Contract liabilities The Company recognizes a contract liability when a customer pays for good or services for which the Company has not yet transferred control. The balances of the Company’s contract liabilities are as follows: March 31, December 31, 2022 2021 (in thousands) Extended service contracts $ 187 $ 251 Subscription software licenses 560 520 Total contract liabilities 747 771 Less: long-term portion — — Contract liabilities – current $ 747 $ 771 Contract liabilities are included within other current liabilities and other long-term liabilities in the accompanying unaudited condensed consolidated balance sheets. Revenue recognized during the three months ended March 31, 2022 and 2021 that was included in the contract liability balance as of December 31, 2021 and 2020 was $ 0.6 million and $ 0.5 million , respectively. Disaggregation of revenue The Company disaggregates revenue from contracts with customers by segment and by the timing of when goods and services are transferred which depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected. The following table provides information regarding revenues disaggregated by segment and the timing of when goods and services are transferred: Three Months Ended March 31, 2022 2021 (in thousands) Product revenue recognized at a point in time $ 7,027 $ 5,614 Product revenue recognized over time 176 195 Software revenue recognized at a point in time 219 174 Software revenue recognized over time 1,611 1,444 Total $ 9,033 $ 7,427 No individual customer accounted for more than 10% of sales for the three months ended March 31, 2022 and 2021. Warranty Reserve The Company provides a standard warranty on its GentleWave Systems for a specified period of time. For the three months ended March 31, 2022 and 2021, GentleWave Systems sold were covered by the warranty for a period of up to two years from the date of sale. Estimated warranty costs are recorded as a liability at the time of delivery with a corresponding provision to cost of sales. Warranty expenses expected to be incurred within 12 months from the date of sale are classified as other current liabilities while those expected to be incurred after 12 months from the date of sale are classified as other liabilities in the accompanying unaudited condensed consolidated balance sheets. Warranty accruals are estimated based on the current product costs, the Company’s historical experience, management’s expectations of future conditions and standard maintenance schedules. The Company evaluates this reserve on a regular basis and makes adjustments as necessary. The following table provides a reconciliation of the change in estimated warranty liabilities for the three months ended March 31, 2022 and 2021: Three Months Ended March 31, 2022 2021 (in thousands) Balance at beginning of period $ 1,620 $ 1,584 Provision for warranties issued 310 330 Warranty costs incurred ( 315 ) ( 461 ) Balance at end of period $ 1,615 $ 1,453 Current portion $ 1,153 $ 1,043 Non-current portion 462 410 Total $ 1,615 $ 1,453 The warranty liability, current and non-current, are included in other current liabilities and other liabilities, respectively, on the unaudited condensed consolidated balance sheets. Recent Accounti ng Pronouncements Changes to GAAP are established by the Financial Accounting Standards Board (“FASB”) in the form of accounting standards updates (“ASU”). ASU’s not listed below were assessed and determined not to be applicable or are expected to have minimal impact on the Company’s unaudited condensed consolidated financial statements. Accounting Pronouncement Recently Adopted In December 2019, the FASB issued ASU 2019-12, “Simplifying the Accounting for Income Taxes.” This guidance, among other provisions, eliminates certain exceptions to existing guidance related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. This guidance also requires an entity to reflect the effect of an enacted change in tax laws or rates in its effective income tax rate in the first interim period that includes the enactment date of the new legislation, aligning the timing of recognition of the effects from enacted tax law changes on the effective income tax rate with the effects on deferred income tax assets and liabilities. Under existing guidance, an entity recognizes the effects of the enacted tax law change on the effective income tax rate in the period that includes the effective date of the tax law. The Company adopted ASU 2019-12 in the first quarter of 2022 as an emerging growth company. The adoption did no t have significant impact on the Company's unaudited condensed consolidated financial statements. In August 2020, the FASB issued ASU 2020-06, “Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity,” which simplifies accounting for convertible instruments by removing major separation models required under current GAAP. The ASU also removes certain settlement conditions that are required for equity-linked contracts to qualify for the derivative scope exception, and it simplifies the diluted earnings per share calculation in certain areas. This will be effective for smaller reporting companies as defined by the SEC for fiscal years beginning aft er December 15, 2023, which for the Company is the first quarter of 2024, with early adoption permitted beginning first quarter of 2021. The Company early adopted the ASU on January 1, 2022 as a smaller reporting company. The adoption did no t have significant impact on the Company's unaudited condensed consolidated financial statements. In May 2021, the FASB issued ASU 2021-04, “Earnings Per Share (Topic 260), Debt—Modifications and Extinguishments (Subtopic 470-50), Compensation—Stock Compensation (Topic 718), and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40)”, which clarifies and reduces diversity in an issuer’s accounting for a modification or an exchange of a freestanding equity-classified written call option that remains equity classified after modification or exchange as (1) an adjustment to equity and, if so, the related earnings per share (EPS) effects, if any, or (2) an expense and, if so, the manner and pattern of recognition. The Company early adopted the ASU on January 1, 2022 . The adoption did no t have significant impact on the Company's unaudited condensed consolidated financial statements. Recent Accounting Updates Not Yet Effective In October 2021, the FASB, issued Accounting Standards Update No. 2021-08, Business Combinations (Topic 805), Accounting for Contract Assets and Contract Liabilities from Contracts with Customers, which requires an entity (acquirer) to recognize and measure contract assets and liabilities acquired in a business combination in accordance with Topic 606, Revenue from Contracts with Customers. This update is effective for fiscal years beginning after December 15, 2022, and interim periods within those fiscal years, with early adoption permitted. The amendments should be applied prospectively to business combinations occurring on or after the effective date of the amendments. The Company is currently evaluating the impact the standard will have on its condensed consolidated financial statements.

Balance Sheet Components

Balance Sheet Components	3 Months Ended
	Mar. 31, 2022
Balance Sheet Related Disclosures [Abstract]
Balance Sheet Components	3. Balance Sheet Components Inventory Inventory consisted of the following: March 31, December 31, 2022 2021 (in thousands) Raw materials $ 6,141 $ 4,911 Work in process 310 270 Finished goods 3,683 2,969 Total inventory $ 10,134 $ 8,150 The Company recorded a reserve for excess and obsolete inventory o f $ 0.6 million a nd $ 0.7 million at March 31, 2022 and December 31, 2021, respectively. Intangible assets, net Intangible assets as of March 31, 2022 and December 31, 2021 consisted of the following: March 31, 2022 Weighted Average Amortization Period Gross Accumulated Net (in years) (in thousands) Developed Technology ( 5 - 10 years) 4.0 $ 2,445 $ 857 $ 1,588 Customer relationships ( 7 years) 2.8 1,910 944 966 Tradenames ( 10 years) 0.8 360 124 236 Total intangible assets 7.6 $ 4,715 $ 1,925 $ 2,790 December 31, 2021 Weighted Average Amortization Period Gross Accumulated Net (in years) (in thousands) Developed Technology ( 5 - 10 years) 4.0 $ 2,445 $ 768 $ 1,677 Customer relationships ( 7 years) 2.8 1,910 875 1,035 Tradenames ( 10 years) 0.8 360 116 244 Total intangible assets 7.6 $ 4,715 $ 1,759 $ 2,956 Amortization expens e was $ 0.2 million for the three months ended March 31, 2022, with approximately $ 0.1 million amortization expense recorded in cost of sales and $ 0.1 million recorded in selling, general and administrative expenses in the accompanying unaudited condensed consolidated statements of operations and comprehensive loss. Amortization expense was $ 0.1 million for the three months ended March 31, 2021, which was mostly recorded in selling, general and administrative expenses in the accompanying unaudited condensed consolidated statements of operations and comprehensive loss. The following table presents estimated future annual amortization expense related to intangible assets, net as of March 31, 2022: Future Intangible Asset Amortization Expenses (in thousands) 2022 (remaining nine months) $ 498 2023 618 2024 442 2025 386 2026 and thereafter 846 Total future amortization expense $ 2,790

Fair Value of Financial Instrum

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	4. Fair Value of Financial Instruments The Company’s financial instruments consist principally of cash, cash equivalents, accounts receivable, accounts payable, operating lease liabilities, warrant liabilities, forward obligation, contingent earnout, and a term loan. Fair value is measured as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. A fair value measurement assumes that the transaction to sell the asset or transfer the liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market. Valuation techniques that are consistent with the market, income or cost approach are used to measure fair value. The fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value into three levels: Level 1 – Observable inputs such as unadjusted quoted prices in active markets that are accessible at the measurement date for identical unrestricted assets or liabilities the Company has the ability to access. Level 2 – Inputs (other than quoted prices included within Level 1) that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the asset or liability. These include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active. Level 3 – Unobservable inputs that are significant to the fair value measurement and reflect the reporting entity’s use of significant management judgment and assumptions when there is little or no market data. Level 3 assets and liabilities include those whose fair value measurements are determined using pricing models, discounted cash flow methodologies or similar valuation techniques and significant management judgment or estimation. These include the Black-Scholes option-pricing model which uses inputs such as expected volatility, risk-free interest rate and expected term to determine fair market valuation. Assets and liabilities are classified based on the lowest level of input that is significant to the fair value measurements. The Company reviews the fair value hierarchy classification at each reporting date. Changes in the ability to observe valuation inputs may result in a reclassification of levels for certain assets or liabilities within the fair value hierarchy. The Company did not have any transfers of assets and liabilities between the levels of the fair value measurement hierarchy during the periods presented. The following table provides the assets and liabilities measured at fair value on a recurring basis and indicate the fair value hierarchy of the valuation techniques utilized by the Company to determine such value at March 31, 2022 and December 31, 2021: March 31, 2022 Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (in thousands) Assets: Money market funds $ 65,206 $ 65,206 $ — $ — December 31, 2021 Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (in thousands) Assets: Money market funds $ 84,102 $ 84,102 $ — $ — Liabilities: Contingent earnout $ 524 $ — $ — $ 524 Recurring liabilities included in Level 3 for the periods presented consisted of a contingent earnout. The following tables present the rollforward of the estimated fair values for instruments classified by the Company within Level 3 of the fair value hierarchy defined above, measured using significant unobservable inputs: Warrant Forward Contingent Total (in thousands) December 31, 2021 $ — $ — $ 524 $ 524 Payment of contingent earnout — — ( 524 ) ( 524 ) March 31, 2022 $ — $ — $ — $ — Warrant Forward Contingent Total (in thousands) December 31, 2020 $ 1,914 $ 2,750 $ 930 $ 5,594 Payment of contingent earnout — — ( 667 ) ( 667 ) Change in fair value — — 14 14 March 31, 2021 $ 1,914 $ 2,750 $ 277 $ 4,941 There were no transfers in or out of Level 3 during the three months ended March 31, 2022 and 2021. Warrants In December 2013, the Company entered into a $ 10.0 million term loan facility with Oxford Finance LLC. The term loan was repaid in full in June 2017 . In connection with the term loan, the Company issued immediately exercisable warrants to the lender for the purchase of 27,397 shares of the Company’s Series C-1 preferred stock equal to three percent of the aggregate amount funded. In June 2017, the Company entered into a term loan facility with Perceptive Credit Holdings, LP, which was subsequently amended (see Note 9). Upon funding of the initial loan, and each initial tranche of the amended loans, the Company issued immediately exercisable warrants to the lender for the purchase of 54,793 shares of the Company’s Series D preferred stock, and 249,313 shares of the Company’s Series E preferred stock. In August 2021, the Company amended its term loan with Perceptive Credit Holdings, LP and Perceptive Credit Holdings III, LP and issued immediately exercisable warrants to the lender for the purchase of 150,684 shares of the Company’s Series E preferred stock. The fair value at issuance of the Series E preferred stock warrants related to the August 2021 amendment was $ 2.1 million. Prior to the Company's IPO in November 2021, the Company recognized warrants to purchase shares of convertible preferred stock as liabilities, reflecting deemed liquidation provisions of the convertible preferred stock considered contingent redemption provisions that were not solely within the Company's control. Upon the closing of the IPO, the contingent redemption provisions were removed with the automatic conversion of the underlying preferred stock to common stock, and the Company revalued the convertible preferred stock warrants and reclassified the liability to stockholders equity. The common stock warrants are no longer subject to remeasurement subsequent to the IPO. Warrants issued and outstanding at March 31, 2022 and December 31, 2021 included the following: Number of warrants Exercise price per share 27,397 $ 10.95 54,793 $ 17.80 249,313 $ 20.08 331,503 In April 2022, the Company amended its term loan and the warrants previously issued to Perceptive Credit Holdings III, LP and certain of its affiliates to purchase an aggregate of 304,105 shares of its common stock. Such warrants were amended solely to reduce the exercise price of the warrants to $ 12.00 per share. There was no impact to the Company's unaudited condensed financial statements as of March 31, 2022. As of March 31, 2021, warrants fully vested and outstanding had estimated fair values ranging betwee n $ 7.88 to $ 12.28 . Fair values were determined using the Black-Scholes option-pricing model with the following input assumptions for the three months ended March 31, 2021: Three Months Ended March 31, 2021 Expected volatility range (weighted average) 79.33 to 86.41 % ( 80.39 %) Dividend yield 0.00 % Risk-free interest rates range (weighted average) 0.30 % to 1.57 % ( 1.31 %) Expected term range (average) 2.75 years to 8.52 years ( 7.01 years) Assumptions were weighted by the relative fair value of the instruments. An increase in the expected volatility, risk-free interest rates, and expected term would result in an increase to the estimated value of the warrants while an increase in the dividend yield would result in a decrease to the estimated value of the warrants. These warrants expire between December 2023 and August 2031 .

Convertible Preferred Stock and

Convertible Preferred Stock and Common Stock	3 Months Ended
	Mar. 31, 2022
Equity [Abstract]
Convertible Preferred Stock and Common Stock	5. Convertible Preferred Stock and Common Stock Authorized Shares On November 2, 2021, the Company amended and restated its certificate of incorporation and bylaws to provide for, among other things, the Company’s authorized capital stock to consist of 500,000,000 shares of common stock, par value $ 0.001 per share, and 10,000,000 shares of preferred stock, par value $ 0.001 per share.

Stock-Based Compensation Expens

Stock-Based Compensation Expense	3 Months Ended
	Mar. 31, 2022
Share-based Payment Arrangement [Abstract]
Stock Based Compensation Expense	6. Stock-based Compensation Expense Stock-based Compensation Expenses The following tables present the Company's stock-based compensation for equity-settled awards by type and financial statement lines included in the accompanying unaudited condensed consolidated statement of operations and comprehensive loss for the three months ended March 31: Three Months Ended March 31, 2022 2021 (in thousands) Options $ 883 $ 494 RSUs 511 - Total stock-based compensation expense $ 1,394 $ 494 Three Months Ended March 31, 2022 2021 (in thousands) Cost of sales $ 101 $ 61 Selling, general and administrative 978 292 Research and development 315 141 Total stock-based compensation expense $ 1,394 $ 494 C o m p e n s a t i o n c o s t r e l a t e d t o u n v e s t e d s t o c k o p t i o n s a n d R S U s w i l l g e n e r a l l y b e a m o r t i z e d o n a s t r a i g h t - l i n e b a sis o v e r t h e r e m a i n i n g a v e r a g e s e r v i c e p e r i o d . T h e f o l l o w i n g t a b l e p r e s e n t s t h e u n am o rt i z e d c o m p e n s a t io n c o s t a n d w e i g h t e d a v e r a g e s e r v i c e p e r i o d o f a l l u n v e s t e d o u t s t a n d i n g a w a r d s a s o f March 31 , 2 0 22. Unamortized Compensation Costs Weighted Average Service Period (in thousands) (years) Options $ 8,674 2.3 RSUs 13,394 1.2 Total unamortized compensation cost $ 22,068 P l a n A c t i v i t i e s T h e f o l l o w i n g t a b l e s u m m a r i z e s s t o c k o p t i o n a c t i v i t y u n d e r t h e C o m p a n y ' s i n c e n t i v e p l a n s : Number Weighted Weighted- Average Remaining Contractual Life Aggregate Intrinsic Value (in years) (in thousands) Options outstanding, December 31, 2021 3,119,993 $ 7.59 Granted — Forfeited ( 33,599 ) $ 7.92 Exercised ( 61,438 ) $ 3.94 $ 123 Options outstanding, March 31, 2022 3,024,956 $ 7.66 7.4 $ 427 Options vested and exercisable, March 31, 2022 1,527,230 $ 4.96 5.8 $ 427 Vested and expected to vest after March 31, 2022 2,840,872 $ 7.48 7.3 $ 427 The weighted-average grant-date fair value of options granted during the three months ended March 31, 2022 and 2021 wa s $ 5.72 pe r share an d $ 11.26 per share, re spectively. The following table summarizes the non-vested stock options as of March 31, 2022 and December 31, 2021: Number of Shares Weighted Non-vested Options, December 31, 2021 1,632,852 $ 7.09 Non-vested Options, March 31, 2022 1,497,827 $ 7.19 The total fair value of shares vested during the three months ended March 31, 2022 and 2021 was $ 0.7 million and $ 0.7 million, respectively. Certain stock option grants under the 2017 Plan allow the recipient to exercise the options prior to the options becoming fully vested. Under the 2017 Plan, the Company retains the right to repurchase common shares that have been issued upon early exercise of options at the original issue price. During the three months ended March 31, 2022, the Company did not repurchase shares. There was no material amount of shares of common stock subject to repurchase as of March 31, 2022. Cash received for the early exercise of unvested stock options is initially recorded as a liability and are released to equity over the vesting period. During three months ended March 31, 2022 and 2021, early exercised stock options vested were immaterial. T h e f o l l o w i n g t a b l e s u m m a r i z e s R S U a c t i v i t y u n d e r t h e C o m p a n y ' s i n c e n t i v e p l a n s : Number Weighted RSUs outstanding, December 31, 2021 338,149 $ 9.37 Granted 2,370,259 $ 5.37 Forfeited ( 5,646 ) $ 7.78 RSUs outstanding, March 31, 2022 2,702,762 $ 5.86

Leases

Leases	3 Months Ended
	Mar. 31, 2022
Leases [Abstract]
Leases	7. Leases The Company leases office space under operating leases with expirations ranging from April 2022 to March 2025, some of which include rent escalations or an option to extend the lease for up to three years per renewal. The exercise of lease renewal options is at the sole discretion of the Company. Where real estate leases contain an option to renew, any period beyond the option date is only included as part of the lease term if the Company is reasonably certain to exercise the option. As of March 31, 2022 , the Company has not entered into any leases that have not yet commenced that would entitle the Company to significant rights or create additional obligations. The Company determines whether a contract is or contains a lease at the inception of the contract. A contract will be deemed to be or contain a lease if the contract conveys the right to control and direct the use of identified property, plant, or equipment for a period of time in exchange for consideration. The Company generally must also have the right to obtain substantially all of the economic benefits from the use of the property, plant, and equipment. The Company has elected the practical expedient to not separate its lease component from non-lease component for its real estate leases. The Company has elected the practical expedient not to apply the lease recognition requirements to short-term leases with an initial term of 12 months or less. The Company uses either its incremental borrowing rate or the implicit rate in the lease agreement as the basis to calculate the present value of future lease payments at lease commencement. The incremental borrowing rate represents the rate the Company would have to pay to borrow funds on a collateralized basis over a similar term and in a similar economic environment. Future minimum lease payments under these leases are as follows: Lease Amounts (in thousands) 2022 (remaining nine months) $ 911 2023 1,038 2024 618 2025 104 2026 and thereafter — Total future minimum lease payments 2,671 Less: Imputed Interest ( 231 ) Present value of operating lease liabilities $ 2,440 Less: Current portion 966 Long-term operating lease liabilities $ 1,474 Weighted average remaining lease term in years 2.51 Weighted average discount rate 7.58 % Variable operating lease expenses consist primarily of real estate taxes and insurance. The components of lease expense and related cash flows were as follows: Three Months Ended March 31, 2022 2021 (in thousands) Rent expense $ 317 $ 293 Short-term lease costs — 36 Variable lease costs 26 42 Total $ 343 $ 371 Cash paid for operating leases $ 313 $ 298 Three Months Ended March 31, 2022 2021 (in thousands) Cost of sales $ 58 $ 60 Selling, general and administrative 285 311 Total $ 343 $ 371

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	8. Commitments and Contingencies Contingencies The Company is subject to claims and assessments from time to time in the ordinary course of business, including without limitation, actions with respect to intellectual property, employment, regulatory, product liability and contractual matters. In connection with these proceedings or matters, the Company regularly assesses the probability and amount (or range) of possible issues based on the developments in these proceedings or matters. A liability is recorded in the accompanying unaudited condensed consolidated financial statements if it is determined that it is probable that a loss has been incurred, and that the amount (or range) of the loss can be reasonably estimated. The Company’s management does not believe that any such matters, individually or in the aggregate, will have a material adverse effect on the Company’s business, financial condition, results of operations or cash flows.

Term Loan

Term Loan	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Term Loan	9. Term Loan Perceptive loan On August 23, 2021, the Company entered into a fifth amendment to the Credit Agreement and Guaranty with Perceptive Credit Holdings, LP (the " Perceptive Loan"), which transferred the loan to Perceptive Credit Holdings III, LP. In connection with this transfer and assignment, the Company entered into an amended and restated credit agreement and guaranty with Perceptive Credit Holdings III, LP (the "Amended Perceptive Loan Agreement"), which provides two additional tranches of delayed-draw term loans of $ 10.0 million each, for an aggregate amount of $ 20.0 million (the "Amended Perceptive Loan"). The Amended Perceptive Loan Agreement provided for the issuance by the Company of warrants to purchase 150,684 shares of Series E Preferred shares at $ 11.00 per share, which was converted to the common stock upon the Company's IPO. The Amended Perceptive Loan Agreement modified the repayment of all outstanding principal to be due at maturity on August 23, 2026 . In conjunction with the Amended Perceptive Loan, the Company paid a closing fee equal to $ 0.5 million as well as the lender’s legal fees and expenses. The Company accounted for the amendment as a modification. On December 31, 2021, the first $ 10.0 million loan expired. The obligation of Perceptive Credit Holdings III, LP to make the second $ 10.0 million loan was subject to the making of the first loan. Because the Company did not draw t he first loan, the second loan, which was required to be initiated on or before March 31, 2 022 was forfeited. For the three months ended March 31, 2 022 , the effective interest rate of the Amended Perceptive Loan was 14.59 %. As of March 31, 2 022 and 2021, the fair value of the Perceptive Loan approximates its carrying amount. Future principal repayments on the Amended Perceptive Loan, as amended, as of March 31, 2 022 , are as follows: Principal (in thousands) 2026 $ 30,000 Total $ 30,000 The Amended Perceptive Loan Agreement also includes financial covenants that require the Company to (i) maintain, at all times, a minimum aggregate balance of $ 3.0 million in cash in one or more controlled accounts, and (ii) satisfy certain minimum revenue thresholds, measured for the twelve consecutive month period on each calendar quarter-end until June 30, 2026. These thresholds increase over time and range from $ 26.4 million for the twelve month period ended September 30, 2021 to $ 95.3 million for the twelve month period ended June 30, 2026. Failure to satisfy these financial covenants would constitute an event of default under the agreement. During the three months ended March 31, 2 022 , the Company was in compliance with all financial covenants and conditions required by the outstanding Amended Perceptive Loan Agreement. On April 6, 2022, the Company entered into Amendment No. 1 (the “Amendment”) to the Amended Perceptive Loan Agreement. The Amendment extends the borrowing deadline for the first tranche of $ 10.0 million of delayed-draw term loans from December 31, 2021 to September 30, 2022 , subject to the Company having generated at least $ 36.0 million in revenue for the 12 consecutive month period most recently ended prior to the borrowing date. The Amendment also extends the borrowing deadline for the second tranche of $ 10.0 million delayed-draw term loans from March 31, 2022 to June 30, 2023 , subject to (i) the Company having generated at least $ 46.0 million in revenue for the 12 consecutive month period most recently ended prior to the borrowing date; and (ii) the closing market capitalization of the Company being at least $ 100.0 million on each trading day of the period of 15 consecutive trading days ending on the business day the borrowing notice for the tranche is delivered to the lender. As a condition to entering into the Amendment, on April 6, 2022, the Company also amended the warrants previously issued to Perceptive Credit Holdings III, LP and certain of its affiliates to purchase an aggregate of 304,105 shares of its common stock. Such warrants were amended solely to reduce the exercise price of the warrants to $ 12.00 per share.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	10. Income Taxes The Company maintains a full valuation allowance against its net deferred tax assets as of March 31, 2022 based on the current assessment that it is not more likely than not these future benefits will be realized before expiration. No material income tax expense or benefit has been recorded given the valuation allowance position and projected taxable losses in the jurisdictions where the Company files income tax returns. The Company has not experienced any significant increases or decreases to its unrecognized tax benefits since December 31, 2021 and does not expect any within the next 12 months. The Company monitors changes to the tax laws in the states it conducts business and files corporate income tax returns. Utilization of the net operating loss carryforwards may be subject to substantial annual limitation due to ownership change limitations that may have occurred or that could occur in the future, as required by Section 382 of the Internal Revenue Code of 1986, as amended (the “Code”), as well as similar state provisions. These ownership changes may limit the amount of net operating loss carryforwards that can be utilized annually to offset future taxable income and tax, respectively. In general, an “ownership change,” as defined by Section 382 of the Code, results from a transaction or series of transactions over a three-year period resulting in an ownership change of more than 50 percentage points of the outstanding stock of a company by certain stockholders or public groups. The Company has not completed an analysis regarding the limitation of net operating loss and R&D credit carryforwards as of March 31, 2022. The Company is subject to U.S. federal and various states income taxes. The federal returns for tax years 2018 through 2021 remain open to examination and the state returns remain subject to examination for tax years 2017 through 2021 . Carryforward attributes that were generated in years where the statute of limitations is closed may still be adjusted upon examination by the Internal Revenue Service or other respective tax authorities. All other state jurisdictions remain open to examination.

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2022
Segment Reporting [Abstract]
Segment Information	12. Segment Information The Company operates and reports its results in two business segments, Product and Software. The Company reports segment information based on the management approach. The management approach designates the internal reporting used by the Company's Chief Operating Decision Maker ("CODM") for decision making and performance assessment as the basis for determining the Company’s reportable segments. The performance measures of the Company’s reportable segments is primarily income (loss) from operations. Income (loss) from operations for each segment includes all revenues, related cost of net revenues, gross margin and operating expenses directly attributable to the segment. The Company’s Product segment includes GentleWave System console and related accessories and instruments. The GentleWave System offers a novel approach to root canal therapy, using advanced fluid dynamics, broad-spectrum acoustic energy and accelerated chemistry to deliver optimal cleaning and disinfection of the root canal system. The Company’s Software segment includes selling traditional software licenses for practice management software to enable an integrated digital office for endodontists as well as Software-as-a-Service subscriptions for the software. The following tables present the Company’s segment information for the three months ended March 31 : 2022 2021 (in thousands, except percentage data) Product Software Total Product Software Total Revenue $ 7,203 $ 1,830 $ 9,033 $ 5,809 $ 1,618 $ 7,427 Cost of sales 6,078 676 6,754 5,075 610 5,685 Gross profit 1,125 1,154 2,279 734 1,008 1,742 Gross margin 16 % 63 % 25 % 13 % 62 % 23 % Operating expenses: Selling, general and administrative 11,526 459 11,985 6,066 458 6,524 Research and development 4,431 419 4,850 4,639 407 5,046 Change in fair value of contingent earnout — — — 14 — 14 Total operating expenses 15,957 878 16,835 10,719 865 11,584 Income (loss) from operations $ ( 14,832 ) $ 276 $ ( 14,556 ) $ ( 9,985 ) $ 143 $ ( 9,842 ) S egment Assets: As of March 31, 2022 As of December 31, 2021 (in thousands) Product $ 87,992 $ 104,588 Software 10,883 10,911 Total $ 98,875 $ 115,499

Net Loss Per Share

Net Loss Per Share	3 Months Ended
	Mar. 31, 2022
Earnings Per Share [Abstract]
Net Loss Per Share	13. Net Loss Per Share The following table sets forth the computation of basic and diluted net loss per share attributable to common stockholders for the periods presented: Three Months Ended March 31, 2022 2021 (in thousands, except shares and per share data) Numerator: Net loss attributable to common stock holders $ ( 15,522 ) $ ( 10,906 ) Denominator: Weighted-average shares outstanding – basic and diluted 26,405,252 1,205,314 Net loss per share – basic and diluted $ ( 0.59 ) $ ( 9.05 ) The following potentially dilutive securities were excluded from the computation of diluted net loss per share calculations for the periods presented because the impact of including them would be anti-dilutive: Three Months Ended March 31, 2022 2021 Convertible preferred stock — 17,031,887 Stock options 3,024,956 2,957,860 RSUs 2,702,762 — Warrants 331,503 180,819 Forward obligation — 224,842 Total 6,059,221 20,395,408

Summary Accounting Policies a_2

Summary Accounting Policies and Recent Accounting Pronouncements (Policies)	3 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make informed estimates, judgements and assumptions that affect the reported amounts in the unaudited condensed consolidated financial statements and disclosures in the accompanying notes, including estimates of probable losses and expenses, as of the date of the accompanying unaudited condensed consolidated financial statements. Management considers many factors in selecting appropriate financial accounting policies and in developing the estimates and assumptions that are used in the preparation of these unaudited condensed consolidated financial statements. Management must apply significant judgment in this process. In addition, other factors may affect estimates, including the expected business and operational changes, the sensitivity and volatility associated with the assumptions used in developing estimates, and whether historical trends are expected to be representative of future trends. The estimation process often may yield a range of potentially reasonable estimates of the ultimate future outcomes, and management must select an amount that falls within that range of reasonable estimates. Actual results could differ materially from the estimates and assumptions used in the preparation of the accompanying unaudited condensed consolidated financial statements under different assumptions or conditions.
Revenue Recognition	Revenue Recognition Contracts with Customers The Company recognizes revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those goods and services. Specifically, the Company applies the following five core principles to recognize revenue: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when, or as, the Company satisfies a performance obligation. Product revenue is generated from sales of the GentleWave console and related PIs and accessories. Software revenue is generated from sales of TDO’s The Digital Office endodontist practice management software licenses. The Company’s products are sold primarily in the United States and Canada directly to customers through its field sales force. Performance Obligations The Company’s performance obligations primarily arise from the manufacture and delivery of the GentleWave System, related PIs and accessories, and the delivery or license of TDO software and related ancillary services. Payment terms are typically on open credit terms consistent with industry practice and do not have significant financing components. Consideration may be variable based on volume. The Company considers the individual deliverables in its product offering as separate performance obligations and assesses whether each promised good or service is distinct. The total contract transaction price is determined based on the consideration expected to be received, based on the stated value in contractual arrangements or the estimated cash to be collected in no-contracted arrangements, and is allocated to the identified performance obligations based upon the relative standalone selling prices of the performance obligations. The stand-alone selling price is based on an observable price offered to other comparable customers. The Company estimates the standalone selling price using the market assessment approach considering market conditions and entity-specific factors including, but not limited to, features and functionality of the products and services, geographies, type of customer and market conditions. The Company regularly reviews and updates standalone selling prices as necessary. The consideration the Company receives in exchange for its goods or services is only recognized when it is probable that a significant reversal will not occur. The consideration to which the Company expects to be entitled includes a stated list price, less various forms of variable consideration. The Company estimates related variable consideration at the point of sale, including discounts, product returns, refunds, and other similar obligations. Revenue is recognized over time when the customer simultaneously receives and consumes the benefits provided by the Company’s performance. Revenue is recognized at a point in time if the criteria for recognizing revenue over time are not met, and the Company has transferred control of the goods to the customer. Product revenue is recognized at a point in time when the Company has transferred control to the customer, which is generally when title of the goods transfers to the customer. Software is licensed via delivery to the customer or via a service arrangement under which cloud-based access is provided on a subscription basis (software-as-a-service). When a fixed up-front license fee is received in exchange for the delivery of software, revenue is recognized at the point in time when the delivery of the software has occurred. When software is licensed on a subscription basis, revenue is recognized over the respective license period. The Company also sells extended service contracts on its GentleWave Systems. Sales of extended service contracts are recorded as deferred revenue until such time as the standard warranty expires, which is generally up to two years from the date of sale. Service contract revenue is recognized on a straight-line basis over time consistent with the life of the related service contract in proportion to the costs incurred in fulfilling performance obligations under the service contract. Revenue for technical support and other services is recognized ratably over the performance obligation period. The Company generally does not experience returns. If necessary, a provision is recorded for estimated sales returns and allowances and is deducted from gross product revenue to arrive at net product revenue in the period the related revenue is recorded. These estimates are based on historical sales returns and allowances and other known factors. Actual returns and claims in any future period are inherently uncertain and thus may differ from these estimates. If actual or expected future returns and claims are significantly greater or lower than the reserves established, a reduction or increase to revenue will be recorded in the period in which such a determination is made. All non-income government-assessed taxes (sales and use taxes) collected from the Company’s customers and remitted to governmental agencies are recorded in accrued expenses and other current liabilities until they are remitted to the government agency. The Company has adopted the practical expedient permitting the direct expensing of costs incurred to obtain contracts where the amortization of such costs would occur over one year or less, and it applied to substantially all the Company’s contracts. Contract liabilities The Company recognizes a contract liability when a customer pays for good or services for which the Company has not yet transferred control. The balances of the Company’s contract liabilities are as follows: March 31, December 31, 2022 2021 (in thousands) Extended service contracts $ 187 $ 251 Subscription software licenses 560 520 Total contract liabilities 747 771 Less: long-term portion — — Contract liabilities – current $ 747 $ 771 Contract liabilities are included within other current liabilities and other long-term liabilities in the accompanying unaudited condensed consolidated balance sheets. Revenue recognized during the three months ended March 31, 2022 and 2021 that was included in the contract liability balance as of December 31, 2021 and 2020 was $ 0.6 million and $ 0.5 million , respectively. Disaggregation of revenue The Company disaggregates revenue from contracts with customers by segment and by the timing of when goods and services are transferred which depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected. The following table provides information regarding revenues disaggregated by segment and the timing of when goods and services are transferred: Three Months Ended March 31, 2022 2021 (in thousands) Product revenue recognized at a point in time $ 7,027 $ 5,614 Product revenue recognized over time 176 195 Software revenue recognized at a point in time 219 174 Software revenue recognized over time 1,611 1,444 Total $ 9,033 $ 7,427 No individual customer accounted for more than 10% of sales for the three months ended March 31, 2022 and 2021.
Warranty Reserve	Warranty Reserve The Company provides a standard warranty on its GentleWave Systems for a specified period of time. For the three months ended March 31, 2022 and 2021, GentleWave Systems sold were covered by the warranty for a period of up to two years from the date of sale. Estimated warranty costs are recorded as a liability at the time of delivery with a corresponding provision to cost of sales. Warranty expenses expected to be incurred within 12 months from the date of sale are classified as other current liabilities while those expected to be incurred after 12 months from the date of sale are classified as other liabilities in the accompanying unaudited condensed consolidated balance sheets. Warranty accruals are estimated based on the current product costs, the Company’s historical experience, management’s expectations of future conditions and standard maintenance schedules. The Company evaluates this reserve on a regular basis and makes adjustments as necessary. The following table provides a reconciliation of the change in estimated warranty liabilities for the three months ended March 31, 2022 and 2021: Three Months Ended March 31, 2022 2021 (in thousands) Balance at beginning of period $ 1,620 $ 1,584 Provision for warranties issued 310 330 Warranty costs incurred ( 315 ) ( 461 ) Balance at end of period $ 1,615 $ 1,453 Current portion $ 1,153 $ 1,043 Non-current portion 462 410 Total $ 1,615 $ 1,453 The warranty liability, current and non-current, are included in other current liabilities and other liabilities, respectively, on the unaudited condensed consolidated balance sheets.
Recent Accounting Pronouncements	Recent Accounti ng Pronouncements Changes to GAAP are established by the Financial Accounting Standards Board (“FASB”) in the form of accounting standards updates (“ASU”). ASU’s not listed below were assessed and determined not to be applicable or are expected to have minimal impact on the Company’s unaudited condensed consolidated financial statements. Accounting Pronouncement Recently Adopted In December 2019, the FASB issued ASU 2019-12, “Simplifying the Accounting for Income Taxes.” This guidance, among other provisions, eliminates certain exceptions to existing guidance related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. This guidance also requires an entity to reflect the effect of an enacted change in tax laws or rates in its effective income tax rate in the first interim period that includes the enactment date of the new legislation, aligning the timing of recognition of the effects from enacted tax law changes on the effective income tax rate with the effects on deferred income tax assets and liabilities. Under existing guidance, an entity recognizes the effects of the enacted tax law change on the effective income tax rate in the period that includes the effective date of the tax law. The Company adopted ASU 2019-12 in the first quarter of 2022 as an emerging growth company. The adoption did no t have significant impact on the Company's unaudited condensed consolidated financial statements. In August 2020, the FASB issued ASU 2020-06, “Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity,” which simplifies accounting for convertible instruments by removing major separation models required under current GAAP. The ASU also removes certain settlement conditions that are required for equity-linked contracts to qualify for the derivative scope exception, and it simplifies the diluted earnings per share calculation in certain areas. This will be effective for smaller reporting companies as defined by the SEC for fiscal years beginning aft er December 15, 2023, which for the Company is the first quarter of 2024, with early adoption permitted beginning first quarter of 2021. The Company early adopted the ASU on January 1, 2022 as a smaller reporting company. The adoption did no t have significant impact on the Company's unaudited condensed consolidated financial statements. In May 2021, the FASB issued ASU 2021-04, “Earnings Per Share (Topic 260), Debt—Modifications and Extinguishments (Subtopic 470-50), Compensation—Stock Compensation (Topic 718), and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40)”, which clarifies and reduces diversity in an issuer’s accounting for a modification or an exchange of a freestanding equity-classified written call option that remains equity classified after modification or exchange as (1) an adjustment to equity and, if so, the related earnings per share (EPS) effects, if any, or (2) an expense and, if so, the manner and pattern of recognition. The Company early adopted the ASU on January 1, 2022 . The adoption did no t have significant impact on the Company's unaudited condensed consolidated financial statements. Recent Accounting Updates Not Yet Effective In October 2021, the FASB, issued Accounting Standards Update No. 2021-08, Business Combinations (Topic 805), Accounting for Contract Assets and Contract Liabilities from Contracts with Customers, which requires an entity (acquirer) to recognize and measure contract assets and liabilities acquired in a business combination in accordance with Topic 606, Revenue from Contracts with Customers. This update is effective for fiscal years beginning after December 15, 2022, and interim periods within those fiscal years, with early adoption permitted. The amendments should be applied prospectively to business combinations occurring on or after the effective date of the amendments. The Company is currently evaluating the impact the standard will have on its condensed consolidated financial statements.

Summary of Accounting Policies

Summary of Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
Summary of Balances of Contract Liabilities	The Company recognizes a contract liability when a customer pays for good or services for which the Company has not yet transferred control. The balances of the Company’s contract liabilities are as follows: March 31, December 31, 2022 2021 (in thousands) Extended service contracts $ 187 $ 251 Subscription software licenses 560 520 Total contract liabilities 747 771 Less: long-term portion — — Contract liabilities – current $ 747 $ 771
Schedule of Revenues Disaggregated by Segment and Timing of Goods and Services Transferred	The following table provides information regarding revenues disaggregated by segment and the timing of when goods and services are transferred: Three Months Ended March 31, 2022 2021 (in thousands) Product revenue recognized at a point in time $ 7,027 $ 5,614 Product revenue recognized over time 176 195 Software revenue recognized at a point in time 219 174 Software revenue recognized over time 1,611 1,444 Total $ 9,033 $ 7,427 No individual customer accounted for more than 10% of sales for the three months ended March 31, 2022 and 2021.
Schedule of Reconciliation of Change in Estimated Warranty	The following table provides a reconciliation of the change in estimated warranty liabilities for the three months ended March 31, 2022 and 2021: Three Months Ended March 31, 2022 2021 (in thousands) Balance at beginning of period $ 1,620 $ 1,584 Provision for warranties issued 310 330 Warranty costs incurred ( 315 ) ( 461 ) Balance at end of period $ 1,615 $ 1,453 Current portion $ 1,153 $ 1,043 Non-current portion 462 410 Total $ 1,615 $ 1,453

Balance Sheet Components (Table

Balance Sheet Components (Tables)	3 Months Ended
	Mar. 31, 2022
Balance Sheet Related Disclosures [Abstract]
Schedule of Inventory	Inventory consisted of the following: March 31, December 31, 2022 2021 (in thousands) Raw materials $ 6,141 $ 4,911 Work in process 310 270 Finished goods 3,683 2,969 Total inventory $ 10,134 $ 8,150
Schedule of Intangible Assets, Net	Intangible assets as of March 31, 2022 and December 31, 2021 consisted of the following: March 31, 2022 Weighted Average Amortization Period Gross Accumulated Net (in years) (in thousands) Developed Technology ( 5 - 10 years) 4.0 $ 2,445 $ 857 $ 1,588 Customer relationships ( 7 years) 2.8 1,910 944 966 Tradenames ( 10 years) 0.8 360 124 236 Total intangible assets 7.6 $ 4,715 $ 1,925 $ 2,790 December 31, 2021 Weighted Average Amortization Period Gross Accumulated Net (in years) (in thousands) Developed Technology ( 5 - 10 years) 4.0 $ 2,445 $ 768 $ 1,677 Customer relationships ( 7 years) 2.8 1,910 875 1,035 Tradenames ( 10 years) 0.8 360 116 244 Total intangible assets 7.6 $ 4,715 $ 1,759 $ 2,956
Schedule of Estimated Future Annual Amortization Expense Related to Intangible Assets	The following table presents estimated future annual amortization expense related to intangible assets, net as of March 31, 2022: Future Intangible Asset Amortization Expenses (in thousands) 2022 (remaining nine months) $ 498 2023 618 2024 442 2025 386 2026 and thereafter 846 Total future amortization expense $ 2,790

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2022
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis	The following table provides the assets and liabilities measured at fair value on a recurring basis and indicate the fair value hierarchy of the valuation techniques utilized by the Company to determine such value at March 31, 2022 and December 31, 2021: March 31, 2022 Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (in thousands) Assets: Money market funds $ 65,206 $ 65,206 $ — $ — December 31, 2021 Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (in thousands) Assets: Money market funds $ 84,102 $ 84,102 $ — $ — Liabilities: Contingent earnout $ 524 $ — $ — $ 524
Schedule of Rollforward of the Estimate Fair Values for Instruments	The following tables present the rollforward of the estimated fair values for instruments classified by the Company within Level 3 of the fair value hierarchy defined above, measured using significant unobservable inputs: Warrant Forward Contingent Total (in thousands) December 31, 2021 $ — $ — $ 524 $ 524 Payment of contingent earnout — — ( 524 ) ( 524 ) March 31, 2022 $ — $ — $ — $ — Warrant Forward Contingent Total (in thousands) December 31, 2020 $ 1,914 $ 2,750 $ 930 $ 5,594 Payment of contingent earnout — — ( 667 ) ( 667 ) Change in fair value — — 14 14 March 31, 2021 $ 1,914 $ 2,750 $ 277 $ 4,941
Summary of Warrants Issued and Outstanding	Warrants issued and outstanding at March 31, 2022 and December 31, 2021 included the following: Number of warrants Exercise price per share 27,397 $ 10.95 54,793 $ 17.80 249,313 $ 20.08 331,503
Summary of Fair Values Determined Using Black-Scholes Option-Pricing Model	As of March 31, 2021, warrants fully vested and outstanding had estimated fair values ranging betwee n $ 7.88 to $ 12.28 . Fair values were determined using the Black-Scholes option-pricing model with the following input assumptions for the three months ended March 31, 2021: Three Months Ended March 31, 2021 Expected volatility range (weighted average) 79.33 to 86.41 % ( 80.39 %) Dividend yield 0.00 % Risk-free interest rates range (weighted average) 0.30 % to 1.57 % ( 1.31 %) Expected term range (average) 2.75 years to 8.52 years ( 7.01 years)

Stock-Based Compensation Expe_2

Stock-Based Compensation Expense (Tables)	3 Months Ended
	Mar. 31, 2022
Share-based Payment Arrangement [Abstract]
Schedule of Stock-Based Compensation Expense	Stock-based Compensation Expenses The following tables present the Company's stock-based compensation for equity-settled awards by type and financial statement lines included in the accompanying unaudited condensed consolidated statement of operations and comprehensive loss for the three months ended March 31: Three Months Ended March 31, 2022 2021 (in thousands) Options $ 883 $ 494 RSUs 511 - Total stock-based compensation expense $ 1,394 $ 494 Three Months Ended March 31, 2022 2021 (in thousands) Cost of sales $ 101 $ 61 Selling, general and administrative 978 292 Research and development 315 141 Total stock-based compensation expense $ 1,394 $ 494
Schedule of Unamortized Compensation Cost and Weighted Average Service Period of Unvested Outstanding Awards	T h e f o l l o w i n g t a b l e p r e s e n t s t h e u n am o rt i z e d c o m p e n s a t io n c o s t a n d w e i g h t e d a v e r a g e s e r v i c e p e r i o d o f a l l u n v e s t e d o u t s t a n d i n g a w a r d s a s o f March 31 , 2 0 22. Unamortized Compensation Costs Weighted Average Service Period (in thousands) (years) Options $ 8,674 2.3 RSUs 13,394 1.2 Total unamortized compensation cost $ 22,068
Summary of Stock Option Activity under Incentive Plans	T h e f o l l o w i n g t a b l e s u m m a r i z e s s t o c k o p t i o n a c t i v i t y u n d e r t h e C o m p a n y ' s i n c e n t i v e p l a n s : Number Weighted Weighted- Average Remaining Contractual Life Aggregate Intrinsic Value (in years) (in thousands) Options outstanding, December 31, 2021 3,119,993 $ 7.59 Granted — Forfeited ( 33,599 ) $ 7.92 Exercised ( 61,438 ) $ 3.94 $ 123 Options outstanding, March 31, 2022 3,024,956 $ 7.66 7.4 $ 427 Options vested and exercisable, March 31, 2022 1,527,230 $ 4.96 5.8 $ 427 Vested and expected to vest after March 31, 2022 2,840,872 $ 7.48 7.3 $ 427
Summary of Non Vested Stock Options	The following table summarizes the non-vested stock options as of March 31, 2022 and December 31, 2021: Number of Shares Weighted Non-vested Options, December 31, 2021 1,632,852 $ 7.09 Non-vested Options, March 31, 2022 1,497,827 $ 7.19
Summary of RSU Activity under Incentive Plans	T h e f o l l o w i n g t a b l e s u m m a r i z e s R S U a c t i v i t y u n d e r t h e C o m p a n y ' s i n c e n t i v e p l a n s : Number Weighted RSUs outstanding, December 31, 2021 338,149 $ 9.37 Granted 2,370,259 $ 5.37 Forfeited ( 5,646 ) $ 7.78 RSUs outstanding, March 31, 2022 2,702,762 $ 5.86

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2022
Leases [Abstract]
Summary of Future Minimum Lease Payments	Future minimum lease payments under these leases are as follows: Lease Amounts (in thousands) 2022 (remaining nine months) $ 911 2023 1,038 2024 618 2025 104 2026 and thereafter — Total future minimum lease payments 2,671 Less: Imputed Interest ( 231 ) Present value of operating lease liabilities $ 2,440 Less: Current portion 966 Long-term operating lease liabilities $ 1,474 Weighted average remaining lease term in years 2.51 Weighted average discount rate 7.58 %
Components of Lease Expense and Related Cash Flows	Variable operating lease expenses consist primarily of real estate taxes and insurance. The components of lease expense and related cash flows were as follows: Three Months Ended March 31, 2022 2021 (in thousands) Rent expense $ 317 $ 293 Short-term lease costs — 36 Variable lease costs 26 42 Total $ 343 $ 371 Cash paid for operating leases $ 313 $ 298 Three Months Ended March 31, 2022 2021 (in thousands) Cost of sales $ 58 $ 60 Selling, general and administrative 285 311 Total $ 343 $ 371

Term Loan (Tables)

Term Loan (Tables)	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Schedule of Future Principal Repayments of Term Loan	Future principal repayments on the Amended Perceptive Loan, as amended, as of March 31, 2 022 , are as follows: Principal (in thousands) 2026 $ 30,000 Total $ 30,000

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2022
Segment Reporting [Abstract]
Summary of Segment Information	The following tables present the Company’s segment information for the three months ended March 31 : 2022 2021 (in thousands, except percentage data) Product Software Total Product Software Total Revenue $ 7,203 $ 1,830 $ 9,033 $ 5,809 $ 1,618 $ 7,427 Cost of sales 6,078 676 6,754 5,075 610 5,685 Gross profit 1,125 1,154 2,279 734 1,008 1,742 Gross margin 16 % 63 % 25 % 13 % 62 % 23 % Operating expenses: Selling, general and administrative 11,526 459 11,985 6,066 458 6,524 Research and development 4,431 419 4,850 4,639 407 5,046 Change in fair value of contingent earnout — — — 14 — 14 Total operating expenses 15,957 878 16,835 10,719 865 11,584 Income (loss) from operations $ ( 14,832 ) $ 276 $ ( 14,556 ) $ ( 9,985 ) $ 143 $ ( 9,842 )
Segment Assets	egment Assets: As of March 31, 2022 As of December 31, 2021 (in thousands) Product $ 87,992 $ 104,588 Software 10,883 10,911 Total $ 98,875 $ 115,499

Net Loss Per Share (Tables)

Net Loss Per Share (Tables)	3 Months Ended
	Mar. 31, 2022
Earnings Per Share [Abstract]
Computation of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders	The following table sets forth the computation of basic and diluted net loss per share attributable to common stockholders for the periods presented: Three Months Ended March 31, 2022 2021 (in thousands, except shares and per share data) Numerator: Net loss attributable to common stock holders $ ( 15,522 ) $ ( 10,906 ) Denominator: Weighted-average shares outstanding – basic and diluted 26,405,252 1,205,314 Net loss per share – basic and diluted $ ( 0.59 ) $ ( 9.05 )
Summary of Potentially Dilutive Securities Excluded from the Computation of Diluted Net Loss Per Share	The following potentially dilutive securities were excluded from the computation of diluted net loss per share calculations for the periods presented because the impact of including them would be anti-dilutive: Three Months Ended March 31, 2022 2021 Convertible preferred stock — 17,031,887 Stock options 3,024,956 2,957,860 RSUs 2,702,762 — Warrants 331,503 180,819 Forward obligation — 224,842 Total 6,059,221 20,395,408

Organization and Basis of Pre_2

Organization and Basis of Presentation - Additional Information (Details) $ / shares in Units, $ in Thousands	Nov. 02, 2021USD ($)$ / sharesshares	Oct. 20, 2021	Mar. 31, 2022USD ($)Segment$ / sharesshares	Mar. 31, 2021USD ($)	Dec. 31, 2021USD ($)$ / sharesshares
Organization And Basis Of Presentation [Line Items]
Reverse stock split			On October 20, 2021, the Company’s Board of Directors (the "Board") approved an amendment to the Company’s certificate of incorporation to effect a reverse split of shares of the Company’s common stock and convertible preferred stock on a 1-for-1.825 basis (the “Reverse Stock Split”). The par values of the common stock and convertible preferred stock were not adjusted as a result of the Reverse Stock Split.
Stock split, Conversion ratio		0.5479
Common stock, shares authorized	500,000,000		500,000,000		500,000,000
Common stock, par value | $ / shares	$ 0.001		$ 0.001		$ 0.001
Preferred stock, shares authorized	10,000,000		10,000,000		10,000,000
Preferred stock, par value | $ / shares	$ 0.001		$ 0.001		$ 0.001
Cash and cash equivalents | $			$ 66,054		$ 84,641
Accumulated deficit | $			(327,566)		$ (312,044)
Net loss | $			15,522	$ 10,906
Cash and cash equivalents used in operations | $			$ 18,045	$ 13,067
Operating and Reportable segments | Segment			2
Common stock, shares issued			26,465,797		26,383,225
Warrants
Organization And Basis Of Presentation [Line Items]
Conversion of convertible preferred stock into number of common stock	331,503
Forward Obligation
Organization And Basis Of Presentation [Line Items]
Common stock, shares issued	224,842
IPO
Organization And Basis Of Presentation [Line Items]
Shares of common stock issued	7,800,000
Public offering price per share | $ / shares	$ 12
Proceeds from issuance of common stock net of underwriting discounts and commissions and other offering expenses | $	$ 83,800
IPO | Common Stock
Organization And Basis Of Presentation [Line Items]
Conversion of convertible preferred stock into number of common stock	17,031,887

Summary Accounting Policies a_3

Summary Accounting Policies and Recent Accounting Pronouncements - Additional Information (Details)	3 Months Ended
	Mar. 31, 2022USD ($)Customer	Mar. 31, 2021USD ($)Customer	Dec. 31, 2021USD ($)
Summary Of Accounting Policies [Line Items]
Goodwill	$ 8,454,000		$ 8,454,000
Fair value, measurement with unobservable inputs reconciliation, liability, transfers into level 3	0	$ 0
Fair value, measurement with unobservable inputs reconciliation, liability, transfers out of level 3	$ 0	0
Revenue, practical expedient, incremental cost of obtaining contract [true false]	true
Revenue recognized	$ 600,000	$ 500,000
ASU 2019-12
Summary Of Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted [true false]	true
Change in accounting principle, accounting standards update, immaterial effect [true false]	true
ASU 2020-06
Summary Of Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted [true false]	true
Change in accounting principle, accounting standards update, adoption date	Jan. 1, 2022
Change in accounting principle, accounting standards update, immaterial effect [true false]	true
ASU 2021-04
Summary Of Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted [true false]	true
Change in accounting principle, accounting standards update, adoption date	Jan. 1, 2022
Change in accounting principle, accounting standards update, immaterial effect [true false]	true
Customer Concentration Risk | Sales
Summary Of Accounting Policies [Line Items]
Number of customer accounted for sales | Customer	0	0
GentleWave Systems | Maximum
Summary Of Accounting Policies [Line Items]
Standard product warranty period	2 years	2 years

Summary Accounting Policies a_4

Summary Accounting Policies and Recent Accounting Pronouncements- Summary of Balances of Contract Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Summary Of Accounting Policies [Line Items]
Less: long-term portion	$ 747	$ 771
Contract liabilities – current	747	771
Extended Service Contracts
Summary Of Accounting Policies [Line Items]
Total contract liabilities	187	251
Subscription Software Licenses
Summary Of Accounting Policies [Line Items]
Less: long-term portion	$ 560	$ 520

Summary Accounting Policies a_5

Summary Accounting Policies and Recent Accounting Pronouncements - Schedule of Revenues Disaggregated by Segment and Timing of Goods and Services Transferred (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Summary Of Accounting Policies [Line Items]
Total revenue	$ 9,033	$ 7,427
Product
Summary Of Accounting Policies [Line Items]
Total revenue	7,203	5,809
Product | Point in Time
Summary Of Accounting Policies [Line Items]
Total revenue	7,027	5,614
Product | Over Time
Summary Of Accounting Policies [Line Items]
Total revenue	176	195
Software
Summary Of Accounting Policies [Line Items]
Total revenue	1,830	1,618
Software | Point in Time
Summary Of Accounting Policies [Line Items]
Total revenue	219	174
Software | Over Time
Summary Of Accounting Policies [Line Items]
Total revenue	$ 1,611	$ 1,444

Summary Accounting Policies a_6

Summary Accounting Policies and Recent Accounting Pronouncements - Schedule of Reconciliation of Change in Estimated Warranty (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accounting Policies [Abstract]
Balance at beginning of period	$ 1,620	$ 1,584
Provision for warranties issued	310	330
Warranty costs incurred	(315)	(461)
Balance at end of period	1,615	1,453
Current portion	1,153	1,043
Non-current portion	462	410
Total	$ 1,615	$ 1,453

Balance Sheet Components - Sche

Balance Sheet Components - Schedule of Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract]
Raw materials	$ 6,141	$ 4,911
Work in process	310	270
Finished goods	3,683	2,969
Total	$ 10,134	$ 8,150

Balance Sheet Components - Addi

Balance Sheet Components - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Reserve for excess and obsolete inventory	$ 600		$ 700
Amortization intangible assets	$ 166	$ 133
Weighted average amortization period of intangible assets	7 years 7 months 6 days		7 years 7 months 6 days
Cost of Sales
Amortization intangible assets	$ 100
Selling, General and Administrative Expenses
Amortization intangible assets	$ 100	$ 100

Balance Sheet Components - Sc_2

Balance Sheet Components - Schedule of Intangible Assets Net (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	7 years 7 months 6 days	7 years 7 months 6 days
Gross	$ 4,715	$ 4,715
Accumulated Amortization	1,925	1,759
Net	$ 2,790	$ 2,956
Developed Technology
Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	4 years	4 years
Gross	$ 2,445	$ 2,445
Accumulated Amortization	857	768
Net	$ 1,588	$ 1,677
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	2 years 9 months 18 days	2 years 9 months 18 days
Gross	$ 1,910	$ 1,910
Accumulated Amortization	944	875
Net	$ 966	$ 1,035
Tradenames
Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	9 months 18 days	9 months 18 days
Gross	$ 360	$ 360
Accumulated Amortization	124	116
Net	$ 236	$ 244

Balance Sheet Components - Sc_3

Balance Sheet Components - Schedule of Intangible Assets Net (Parenthetical) (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Developed Technology | Minimum
Finite Lived Intangible Assets [Line Items]
Estimated useful life	5 years	5 years
Developed Technology | Maximum
Finite Lived Intangible Assets [Line Items]
Estimated useful life	10 years	10 years
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Estimated useful life	7 years	7 years
Tradenames
Finite Lived Intangible Assets [Line Items]
Estimated useful life	10 years	10 years

Balance Sheet Components - Sc_4

Balance Sheet Components - Schedule of Estimated Future Annual Amortization Expense Related to Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract]
2022 (remaining nine months)	$ 498
2023	618
2024	442
2025	386
2026 and thereafter	846
Net	$ 2,790	$ 2,956

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value Measurements Recurring Basis - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Contingent Earnout
Assets:
Assets		$ 524
Significant Unobservable Inputs (Level 3) | Contingent Earnout
Assets:
Assets		524
Money Market Funds
Assets:
Assets	$ 65,206	84,102
Money Market Funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Assets	$ 65,206	$ 84,102

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Schedule of Rollforward of the Estimate Fair Values for Instruments (Details) - Fair Value Measurements Recurring Basis - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 524	$ 5,594
Payment of contingent earnout	(524)	(667)
Change in fair value		14
Ending Balance		4,941
Warrant Liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance		1,914
Ending Balance		1,914
Forward Obligation
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance		2,750
Ending Balance		2,750
Contingent Earnout
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	524	930
Payment of contingent earnout	$ (524)	(667)
Change in fair value		14
Ending Balance		$ 277

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Additional Information (Details)	1 Months Ended			3 Months Ended
	Aug. 31, 2021USD ($)shares	Jun. 30, 2017shares	Dec. 31, 2013USD ($)shares	Mar. 31, 2022USD ($)shares	Mar. 31, 2021USD ($)	Apr. 30, 2022$ / sharesshares	Dec. 31, 2021shares
Fair Value Option Quantitative Disclosures [Line Items]
Fair value, measurement with unobservable inputs reconciliation, liability, transfers into level 3 | $				$ 0	$ 0
Fair value, measurement with unobservable inputs reconciliation, liability, transfers out of level 3 | $				$ 0	$ 0
Warrants issued to purchase preferred stock				331,503			331,503
Common stock, shares issued				26,465,797			26,383,225
Minimum
Fair Value Option Quantitative Disclosures [Line Items]
Warrants expiration date				2023-12
Maximum
Fair Value Option Quantitative Disclosures [Line Items]
Warrants expiration date				2031-08
Fair Values | Minimum
Fair Value Option Quantitative Disclosures [Line Items]
Warrants and Rights Outstanding, Measurement Input					7.88
Fair Values | Maximum
Fair Value Option Quantitative Disclosures [Line Items]
Warrants and Rights Outstanding, Measurement Input					12.28
Term Loan | Oxford Finance LLC
Fair Value Option Quantitative Disclosures [Line Items]
Term loan facility amount | $			$ 10,000,000
Debt repayment month and year			2017-06
Percentage of aggregate amount funded to purchase preferred stock			3.00%
Term Loan | Oxford Finance LLC | Series C-1
Fair Value Option Quantitative Disclosures [Line Items]
Warrants issued to purchase preferred stock			27,397
Term Loan | Perceptive Credit Holdings L P | Series E
Fair Value Option Quantitative Disclosures [Line Items]
Warrants issued to purchase preferred stock		249,313
Term Loan | Perceptive Credit Holdings L P | Series D
Fair Value Option Quantitative Disclosures [Line Items]
Warrants issued to purchase preferred stock		54,793
Term Loan | Perceptive Credit Holdings L P and Perceptive Credit Holdings III L P | Series E
Fair Value Option Quantitative Disclosures [Line Items]
Warrants issued to purchase preferred stock	150,684
Fair value of warrants | $	$ 2,100,000
Term Loan | Perceptive Credit Holdings III, LP | Subsequent Event
Fair Value Option Quantitative Disclosures [Line Items]
Warrant exercise price per share | $ / shares						$ 12
Term Loan | Perceptive Credit Holdings III, LP | Common Stock | Subsequent Event
Fair Value Option Quantitative Disclosures [Line Items]
Warrants issued to purchase preferred stock						304,105

Fair Value of Financial Instr_6

Fair Value of Financial Instruments - Summary of Warrants Issued and Outstanding (Details) - $ / shares	Mar. 31, 2022	Dec. 31, 2021
Class Of Warrant Or Right [Line Items]
Number of warrants issued	331,503	331,503
Number of warrants outstanding	331,503	331,503
Series C-1
Class Of Warrant Or Right [Line Items]
Number of warrants issued	27,397	27,397
Number of warrants outstanding	27,397	27,397
Exercise Price Per Share	$ 10.95
Series D
Class Of Warrant Or Right [Line Items]
Number of warrants issued	54,793	54,793
Number of warrants outstanding	54,793	54,793
Exercise Price Per Share	$ 17.80
Series E
Class Of Warrant Or Right [Line Items]
Number of warrants issued	249,313	249,313
Number of warrants outstanding	249,313	249,313
Exercise Price Per Share	$ 20.08

Fair Value of Financial Instr_7

Fair Value of Financial Instruments - Summary of Fair Values Determined Using Black-Scholes Option-Pricing Model (Details)	Mar. 31, 2021
Expected Volatility | Minimum
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Warrants and Rights Outstanding, Measurement Input	79.33
Expected Volatility | Maximum
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Warrants and Rights Outstanding, Measurement Input	86.41
Expected Volatility | Weighted Average
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Warrants and Rights Outstanding, Measurement Input	80.39
Dividend Yield
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Warrants and Rights Outstanding, Measurement Input	0
Risk-Free Interest Rates | Minimum
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Warrants and Rights Outstanding, Measurement Input	0.30
Risk-Free Interest Rates | Maximum
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Warrants and Rights Outstanding, Measurement Input	1.57
Risk-Free Interest Rates | Weighted Average
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Warrants and Rights Outstanding, Measurement Input	1.31
Expected Term | Minimum
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Warrants and rights outstanding, term	2 years 9 months
Expected Term | Maximum
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Warrants and rights outstanding, term	8 years 6 months 7 days
Expected Term | Weighted Average
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Warrants and rights outstanding, term	7 years 3 days

Convertible Preferred Stock a_2

Convertible Preferred Stock and Common Stock - Additional Information (Details) - $ / shares	Mar. 31, 2022	Dec. 31, 2021	Nov. 02, 2021
Class Of Stock [Line Items]
Common stock, par value	$ 0.001	$ 0.001	$ 0.001
Common stock, shares authorized	500,000,000	500,000,000	500,000,000
Preferred stock, shares authorized	10,000,000	10,000,000	10,000,000
Preferred stock, par value	$ 0.001	$ 0.001	$ 0.001

Stock-Based Compensation Expe_3

Stock-Based Compensation Expense - Schedule of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation expense	$ 1,394	$ 494
Cost of Sales
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation expense	101	61
Selling, General and Administrative
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation expense	978	292
Research and Development
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation expense	315	141
Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation expense	883	$ 494
RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation expense	$ 511

Stock-Based Compensation Expe_4

Stock-Based Compensation Expense - Schedule of Unamortized Compensation Cost and Weighted Average Service Period of Unvested Outstanding Awards (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized Compensation Costs	$ 22,068
Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized Compensation Costs	$ 8,674
Weighted Average Service Period	2 years 3 months 18 days
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized Compensation Costs	$ 13,394
Weighted Average Service Period	1 year 2 months 12 days

Stock-Based Compensation Expe_5

Stock-Based Compensation Expense - Summary of Stock Option Activities (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)$ / sharesshares
Share-based Payment Arrangement [Abstract]
Number of Shares, Options Outstanding, Beginning Balance | shares	3,119,993
Number of Shares, Forfeited | shares	(33,599)
Number of Shares, Exercised | shares	(61,438)
Number of Shares, Options Outstanding, Ending Balance | shares	3,024,956
Number of Options Vested and exercisable at March 31, 2022 | shares	1,527,230
Number of Shares, Vested and expected to vest after March 31, 2022 | shares	2,840,872
Weighted Average Exercise Price Per Share, Options Outstanding, Beginning Balance | $ / shares	$ 7.59
Weighted Average Exercise Price Per Share, Forfeited | $ / shares	7.92
Weighted Average Exercise Price Per Share, Exercised | $ / shares	3.94
Weighted Average Exercise Price Per Share, Ending Balance | $ / shares	7.66
Weighted Average Exercise Price Per Share, Options Vested and exercisable, March 31, 2022 | $ / shares	4.96
Weighted Average Exercise Price Per Share, Vested and expected to vest after March 31, 2022 | $ / shares	$ 7.48
Weighted- Average Remaining Contractual Life (Years) Outstanding at March 31, 2022	7 years 4 months 24 days
Weighted-Average Remaining Contractual Life (in years) Options Vested and exercisable, March 31, 2022	5 years 9 months 18 days
Weighted-Average Remaining Contractual Life (in years) Vested and expected to vest after March 31, 2022	7 years 3 months 18 days
Aggregate Intrinsic Value, Exercised | $	$ 123
Aggregate Intrinsic Value, Options outstanding, March 31, 2022 | $	427
Aggregate Intrinsic Value, Options vested and exercisable, March 31, 2022 | $	427
Aggregate Intrinsic Value, Vested and expected to vest after March 31, 2022 | $	$ 427

Stock-Based Compensation Expe_6

Stock-Based Compensation Expense - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Weighted-average grant-date fair value of options granted	$ 5.72	$ 11.26
Fair value of shares vested	$ 700	$ 700
Aggregate intrinsic value of stock options outstanding	427
Aggregate intrinsic value vested and exercisable	427
Unamortized compensation expense	$ 22,068
Number of Shares, Vested and expected to vest after March 31, 2022	2,840,872
Number of outstanding options vested, or expected to vest , weighted-average exercise price	$ 7.48
Number of outstanding options vested, or expected to vest , average remaining life	7 years 3 months 18 days
Number of outstanding options vested, or expected to vest aggregate intrinsic value	$ 427
Stock Options
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Unamortized compensation expense	$ 8,674
Weighted average period to be recognized	2 years 3 months 18 days

Stock-Based Compensation Expe_7

Stock-Based Compensation Expense - Summary of Non Vested Options (Details) - Options - $ / shares	Mar. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Non-vested Options, December 31, 2021	1,497,827	1,632,852
Number of Shares, Non-vested Options, March 31, 2022	1,497,827	1,632,852
Weighted Average Grant Date Fair Value, Non-vested Options, December 31, 2021	$ 7.19	$ 7.09
Weighted Average Grant Date Fair Value, Non-vested Options, March 31, 2022	$ 7.19	$ 7.09

Stock-based Compensation Expe_8

Stock-based Compensation Expense - Summary of RSU Activity under Incentive Plans (Details) - RSUs	3 Months Ended
	Mar. 31, 2022$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, RSUs outstanding, Beginning Balance | shares	338,149
Number of Shares, Granted | shares	2,370,259
Number of Shares, Forfeited | shares	(5,646)
Number of Shares, RSUs outstanding, Ending Balance | shares	2,702,762
Weighted Average Grant Date Fair Value, RSUs outstanding, Beginning Balance | $ / shares	$ 9.37
Weighted Average Grant Date Fair Value, Granted | $ / shares	5.37
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	7.78
Weighted Average Grant Date Fair Value, RSUs outstanding, Ending Balance | $ / shares	$ 5.86

Leases - Additional Information

Leases - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Leases [Abstract]
Operating lease description	The Company leases office space under operating leases with expirations ranging from April 2022 to March 2025, some of which include rent escalations or an option to extend the lease for up to three years per renewal.
Operating lease renewal term	3 years
Lessee, Operating Lease, Existence of Option to Extend [true false]	true
Operating lease, not yet commenced, description	the Company has not entered into any leases that have not yet commenced that would entitle the Company to significant rights or create additional obligations.
Cash paid for amounts included in the lease liability	$ 313	$ 298
Weighted-average lease term of operating leases	2 years 6 months 3 days
Weighted-average discount rate of operating leases	7.58%

Leases - Summary of Future Mini

Leases - Summary of Future Minimum Lease Payments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Leases [Abstract]
2022 (remaining nine months)	$ 911
2023	1,038
2024	618
2025	104
Total future minimum lease payments	2,671
Less: Imputed Interest	(231)
Present value of operating lease liabilities	2,440
Less: Current portion	966	$ 975
Long-term operating lease liabilities	$ 1,474	$ 1,730
Weighted average remaining lease term in years	2 years 6 months 3 days
Weighted average discount rate	7.58%

Leases - Components of Lease Ex

Leases - Components of Lease Expense and Related Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Lessee, Lease, Description [Line Items]
Rent expense	$ 317	$ 293
Short-term lease costs		36
Variable lease costs	26	42
Lease costs	343	371
Cost of Sales
Lessee, Lease, Description [Line Items]
Lease costs	58	60
Selling, General and Administrative
Lessee, Lease, Description [Line Items]
Lease costs	$ 285	$ 311

Term Loan - Additional Informat

Term Loan - Additional Information (Details) $ / shares in Units, $ in Millions	Apr. 06, 2022USD ($)Days$ / sharesshares	Aug. 23, 2021USD ($)$ / sharesshares	Mar. 31, 2022USD ($)shares	Sep. 30, 2021USD ($)	Jun. 30, 2026USD ($)	Dec. 31, 2021USD ($)shares
Debt Instrument [Line Items]
Number of warrants issued | shares			331,503			331,503
Amended Perceptive Loan Agreement
Debt Instrument [Line Items]
Aggregate minimum cash balance			$ 3
Debt instrument covenant description			The Amended Perceptive Loan Agreement also includes financial covenants that require the Company to (i) maintain, at all times, a minimum aggregate balance of $3.0 million in cash in one or more controlled accounts, and (ii) satisfy certain minimum revenue thresholds, measured for the twelve consecutive month period on each calendar quarter-end until June 30, 2026. These thresholds increase over time and range from $26.4 million for the twelve month period ended September 30, 2021 to $95.3 million for the twelve month period ended June 30, 2026. Failure to satisfy these financial covenants would constitute an event of default under the agreement. During the three months ended March 31, 2022, the Company was in compliance with all financial covenants and conditions required by the outstanding Amended Perceptive Loan Agreement.
Minimum | Amended Perceptive Loan Agreement
Debt Instrument [Line Items]
Revenue thresholds increase over time				$ 26.4
Maximum | Amended Perceptive Loan Agreement | Forecast
Debt Instrument [Line Items]
Revenue thresholds increase over time					$ 95.3
Subsequent Event | Amendment
Debt Instrument [Line Items]
Number of warrants issued | shares	304,105
Purchase price per share of warrant | $ / shares	$ 12
Maximum market capitalization on each trading day	$ 100
Number of consecutive trading days | Days	15
Tranche One | Subsequent Event | Amendment
Debt Instrument [Line Items]
Delayed draw term loan	$ 10
Delayed-draw term loans start date	Dec. 31, 2021
Delayed-draw term loans end date	Sep. 30, 2022
Maximum revenue in borrowing date	$ 36
Tranche Two | Subsequent Event | Amendment
Debt Instrument [Line Items]
Delayed draw term loan	$ 10
Delayed-draw term loans start date	Mar. 31, 2022
Delayed-draw term loans end date	Jun. 30, 2023
Maximum revenue in borrowing date	$ 46
Perceptive Credit Holdings III, LP
Debt Instrument [Line Items]
Aggregate delayed draw term loan		$ 20
Maturity date		Aug. 23, 2026
Term loan, closing fee		$ 0.5
Effective interest rate percentage			14.59%
Perceptive Credit Holdings III, LP | Tranche One
Debt Instrument [Line Items]
Term loan expired						$ 10
Perceptive Credit Holdings III, LP | Tranche Two
Debt Instrument [Line Items]
Delayed draw term loan		$ 10
Initial term loan						$ 10
Maturity date						Mar. 31, 2022
Perceptive Credit Holdings III, LP | Tranche Two | Series E Preferred Shares
Debt Instrument [Line Items]
Number of warrants issued | shares		150,684
Purchase price per share of warrant | $ / shares		$ 11

Term Loan - Schedule of Future

Term Loan - Schedule of Future Principal Repayments of Term Loan (Details) $ in Thousands	Mar. 31, 2022USD ($)
Debt Disclosure [Abstract]
2026	$ 30,000
Total	$ 30,000

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details)	3 Months Ended
	Mar. 31, 2022
Income Tax Contingency [Line Items]
Ownership change percentage	50.00%
Federal
Income Tax Contingency [Line Items]
Open Tax Year	2018 2019 2020 2021
State
Income Tax Contingency [Line Items]
Open Tax Year	2017 2018 2019 2020 2021

Segment Information - Summary o

Segment Information - Summary of Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Revenue	$ 9,033	$ 7,427
Cost of sales	6,754	5,685
Gross profit	$ 2,279	$ 1,742
Gross margin	25.00%	23.00%
Operating expenses
Selling, general and administrative	$ 11,985	$ 6,524
Research and development	4,850	5,046
Change in fair value of contingent earnout		14
Total operating expenses	16,835	11,584
Loss from operations	(14,556)	(9,842)
Product
Segment Reporting Information [Line Items]
Revenue	7,203	5,809
Cost of sales	6,078	5,075
Gross profit	$ 1,125	$ 734
Gross margin	16.00%	13.00%
Operating expenses
Selling, general and administrative	$ 11,526	$ 6,066
Research and development	4,431	4,639
Change in fair value of contingent earnout		14
Total operating expenses	15,957	10,719
Loss from operations	(14,832)	(9,985)
Software
Segment Reporting Information [Line Items]
Revenue	1,830	1,618
Cost of sales	676	610
Gross profit	$ 1,154	$ 1,008
Gross margin	63.00%	62.00%
Operating expenses
Selling, general and administrative	$ 459	$ 458
Research and development	419	407
Total operating expenses	878	865
Loss from operations	$ 276	$ 143

Segment Information - Segment A

Segment Information - Segment Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	$ 98,875	$ 115,499
Product
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	87,992	104,588
Software
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	$ 10,883	$ 10,911

Net Loss Per Share - Computatio

Net Loss Per Share - Computation of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net loss attributable to common stock holders	$ (15,522)	$ (10,906)
Denominator:
Weighted-average shares outstanding - basic and diluted	26,405,252	1,205,314
Net loss per share - basic and diluted	$ (0.59)	$ (9.05)

Net Loss Per Share - Summary of

Net Loss Per Share - Summary of Potentially Dilutive Securities Excluded from the Computation of Diluted Net Loss Per Share (Details) - shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities	6,059,221	20,395,408
Convertible Preferred Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities		17,031,887
Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities	3,024,956	2,957,860
RSUs
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities	2,702,762
Warrants
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities	331,503	180,819
Forward Obligation
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities		224,842