Exhibit 99.1 THORATEC REPORTS 17 PERCENT INCREASE IN REVENUES Third Consecutive Quarter of Double-Digit Revenue Growth (PLEASANTON, CA), July 22, 2003 -- Thoratec Corporation (NASDAQ: THOR), a world leader in products to treat cardiovascular disease, said today that product revenues in the second quarter of 2003 increased by 17 percent over those in the second quarter of last year. Product sales for the quarter ended June 28, 2003 were $36.2 million versus $31.0 million in the second quarter of 2002. Cash earnings, which the company defines as net income before taxes and excluding merger, restructuring and other expenses, and amortization of purchased intangible assets, were $4.7 million, or $0.08 per share, versus cash earnings of $2.7 million, or $0.05 per share, in the same period a year ago. Further information is provided in a table below to reconcile cash earnings as disclosed in this press release to reported GAAP net income before taxes. On an as reported basis, Thoratec reported net income of $1.0 million, or $0.02 per share, compared with a loss of $556,000, or $0.01 per share, in the same period a year ago. "This is the third consecutive quarter in which the company experienced double-digit top line growth versus the comparable quarter. We experienced solid increases across all product lines, led by our ventricular assist device (VAD) business," noted D. Keith Grossman, president and chief executive officer of Thoratec. "Cardiovascular division revenues increased 19 percent over the same quarter a year ago, aided by a particularly strong quarter from our HeartMate(R) LVAS (left ventricular assist systems) that experienced a 21 percent increase in revenues. At the same time, revenues at our International Technidyne Corporation (ITC) division grew by 12 percent over the comparable quarter," he continued. "The impact of our growth is also reflected in the strength of our balance sheet, as we ended the quarter with nearly $90 million in cash and investments, an increase of more than $13 million -- or 18 percent -- since the end of fiscal 2002." For the first six months of 2003, Thoratec reported revenues of $72.2 million, a 19 percent increase over revenues of $60.7 million in the first six months of fiscal 2002. VAD related revenues year to date are 21 percent higher than the first six months of last year. Cash earnings for the first half of 2003 were $10.1 million, or $0.18 per share, versus cash earnings of $3.2 million, or $0.06 per share, in the same period last year. Reported net income was $2.4 million, or $0.04 per share, versus a loss of $2.3 million, or $0.04 per share, in the first six months of fiscal 2002. As announced on July 18, Thoratec's ITC subsidiary has entered into an asset purchase agreement to acquire the IRMA (Immediate Response Mobile Analysis) point-of-care (POC) diagnostic system intermittent blood gas monitoring performance product line from Diametrics Medical, Inc. (OTC BB: DMED). ITC will pay approximately $5 million and assume certain trade payables related to the assets. The acquisition is subject to a number of conditions, including approval from Diametrics shareholders, and is expected to close later this year. The company said the transaction is expected to be neutral to Thoratec's previous financial guidance for 2003 and neutral or slightly accretive to cash earnings in 2004. The IRMA business is currently generating approximately $5-$10 million of annual revenues. As was announced on July 14, the Centers for Medicare & Medicaid Services (CMS) extended for 30 days the due date for its decision regarding coverage for LVADs (left ventricular assist devices) for Destination Therapy to allow additional time for agency clearance. The company said that according to CMS the extension was a result of CMS' standard review process. Thoratec noted that delays of this type are not unusual for decisions regarding major procedures and that the due dates for several other recent coverage decisions had also been extended. Thoratec said its discussions with CMS continue to be positive and productive. The company believes that CMS will post its decision within 30 days and it remains optimistic that CMS will issue a National Coverage Decision for LVADs for Destination Therapy. "A significant highlight of the quarter was the FDA granting conditional approval of the company's IDE (Investigational Device Exemption) to initiate a feasibility clinical trial in the U.S. for its HeartMate II," Grossman said. "This was a major clinical milestone for Thoratec as the HeartMate II is a next generation design for the treatment of heart failure patients. Including this study, we will have six distinct ongoing or pending clinical trials or filings for regulatory approval in our very active product pipeline." 2 The HeartMate II safety and early efficacy trial will begin with seven patients at four centers and will be evaluated initially for use as a bridge to heart transplantation. The company is currently identifying prospective centers and enrollment could begin once the centers have the appropriate internal approvals -- a process that is expected to be completed during the current quarter. The company plans to utilize 30-day data from the seven patients to seek approval for an expanded study -- something it hopes can occur by the end of 2003 or early in 2004. In addition, the company is currently responding to some routine questions from regulatory authorities in the United Kingdom and hopes to initiate a separate trial for the HeartMate II there early in the fourth quarter. "The HeartMate II incorporates enhanced control software and other improvements based on our early clinical experience in Europe. It represents a simple and elegant design and the fact that it is equivalent in size to a D-cell battery makes it suitable for a wider range of patients, including small adults and children," said Jeffrey Nelson, president of the company's cardiovascular division. Nelson said that the company's European and U.S. clinical trials for the Thoratec IVAD(TM) (Implantable Ventricular Assist Device) continue to go well and that the company hopes to receive CE Mark certification, enabling sales of the device in Europe, soon. Thirteen patients have been enrolled in the European trial, while 16 have been implanted in the U.S. study. The company hopes to file a PMA (PreMarket Approval) Supplement seeking FDA approval later this year. The IVAD is an implantable version of the highly successful Thoratec(TM) VAD System and its smaller size, design and construction enable internal placement resulting in greater comfort, mobility and patient satisfaction. Weighing less than a pound, it is the smallest implantable pulsatile VAD device. "We have now accumulated more than 2,100 days in cumulative patient support with no serious device malfunctions or unanticipated adverse events. Patients have ranged in age from 16 to 71 years of age with one patient supported for approximately eight months," Nelson noted. Thoratec Corporation is a world leader in products to treat cardiovascular disease with its Thoratec(R) VAD and HeartMate LVAS implanted in more than 5,800 patients suffering from heart failure. Thoratec's product line also includes the Vectra(R) vascular access graft (VAG) for patients undergoing hemodialysis. Additionally, its International Technidyne Corporation (ITC) division supplies blood coagulation testing and skin incision products. Thoratec is headquartered in Pleasanton, California. For more information, visit the company's web sites at http://www.thoratec.com or http://www.itcmed.com. 3 The portions of this news release that relate to future plans, events or performance are forward-looking statements. Investors are cautioned that all such statements involve risk and uncertainties, including risks related to continuing analysis of the REMATCH trial data, regulatory approval processes, healthcare reimbursement and coverage policies and acquisition activities. These factors, and others, are discussed more fully under the heading, "Risk Factors," in Thoratec's 10-K for the fiscal year ended December 28, 2002, and other filings with the Securities and Exchange Commission. Actual results, events or performance may differ materially. These forward-looking statements speak only as of the date hereof. Thoratec undertakes no obligation to publicly release the results of any revisions to these forward-looking statements that may be made to reflect events or circumstances after the date hereof, or to reflect the occurrence of unanticipated events. Investor Contact Information: Media Contact Information: Wayne Boylston April Grefthen/Sheila Rasu Chief Financial Officer FischerHealth, Inc. Thoratec Corporation (310) 577-7870, ext. 165/151 (925) 847-8600 agrefthen@fischerhealth.com srasu@fischerhealth.com 4 THORATEC CORPORATION AND SUBSIDIARIES Condensed Consolidated Balance Sheets (Unaudited) (in thousands) June December 2003 2002 ---------- ---------- ASSETS Current Assets: Cash and cash equivalents $ 57,545 $ 42,044 Short-term available-for-sale investments -- 3,439 Receivables, net 26,433 27,593 Inventories 37,409 38,835 Other current assets 14,318 14,699 ---------- ---------- Total Current Assets 135,705 126,610 Property, plant and equipment, net 24,808 24,715 Long-term available-for-sale investments 31,731 30,051 Goodwill 96,492 96,492 Purchased intangible assets 178,235 184,282 Other assets 4,298 6,282 ---------- ---------- TOTAL ASSETS $ 471,269 $ 468,432 ========== ========== LIABILITIES AND SHAREHOLDERS' EQUITY Current Liabilities: Accounts payable $ 5,207 $ 6,319 Accrued expenses 10,543 11,111 Accrued restructuring and other -- 1,208 ---------- ---------- Total Current Liabilities 15,750 18,638 Long-term deferred tax liability and other 73,001 75,454 ---------- ---------- Total Liabilities 88,751 94,092 Shareholders' Equity 382,518 374,340 ---------- ---------- TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY $ 471,269 $ 468,432 ========== ========== THORATEC CORPORATION AND SUBSIDIARIES Condensed Consolidated Statements of Operations (Unaudited) (in thousands, except per share data) Three Months Ended Six Months Ended ---------------------- -------------------- June June June June 2003 2002 2003 2002 -------- -------- -------- -------- Product sales $ 36,156 $ 31,034 $ 72,218 $ 60,673 Cost of product sales 14,651 13,281 29,542 26,445 -------- -------- -------- -------- Gross profit 21,505 17,753 42,676 34,228 -------- -------- -------- -------- Operating expenses: Selling, general and administrative 11,169 9,847 21,229 18,566 Research and development 6,279 6,083 12,539 12,985 Amortization of purchased intangible assets 3,096 3,096 6,192 6,192 Merger, restructuring and other costs (67) 506 (124) 827 -------- -------- -------- -------- Total operating expenses 20,477 19,532 39,836 38,570 -------- -------- -------- -------- Income (loss) from operations 1,028 (1,779) 2,840 (4,342) Interest and other income (expense) -- net 649 854 1,160 485 -------- -------- -------- -------- Income (loss) before taxes 1,677 (925) 4,000 (3,857) Income tax expense (benefit) 654 (369) 1,560 (1,543) -------- -------- -------- -------- Net income (loss) $ 1,023 $ (556) $ 2,440 $ (2,314) ======== ======== ======== ======== Net income (loss) per share: Basic $ 0.02 $ (0.01) $ 0.04 $ (0.04) ======== ======== ======== ======== Diluted $ 0.02 $ (0.01) $ 0.04 $ (0.04) ======== ======== ======== ======== Shares used to compute net income (loss) per share: Basic 55,394 56,799 55,226 56,725 Diluted 56,891 56,799 56,240 56,725 Reconciliation of Cash Earnings to Net Income Before Taxes This press release discloses "cash earnings" which is not a financial measure prepared in accordance with United States Generally Accepted Accounting Principles ("GAAP"). Management believes that cash earnings can be a useful measure for investors to evaluate our financial performance by providing the results of our company's primary business operations, excluding the effects of charges associated with our merger, restructuring and other activities. However, this measure should be considered in addition to, and not as a substitute, or superior to, net income before taxes or other measures of financial performance prepared in accordance with GAAP. Cash earnings has been reconciled to net income before taxes, the most directly comparable GAAP financial measure, as follows: Three Months Ended Six Months Ended ---------------------- ---------------------- June June June June 2003 2002 2003 2002 -------- -------- -------- -------- Net income (loss) before taxes as reported under GAAP $ 1,677 $ (925) $ 4,000 $ (3,857) Adjustments to reconcile GAAP net income (loss) before taxes with cash earnings: Amortization of purchased intangible assets 3,096 3,096 6,192 6,192 Merger, restructuring and other costs (67) 506 (124) 827 -------- --------- ---------- --------- Cash earnings $ 4,706 $ 2,677 $ 10,068 $ 3,162 ======== ======== ======== ======== Basic and diluted cash earnings per share $ 0.08 $ 0.05 $ 0.18 $ 0.06 ======== ======== ======== ========