Allurion (ALUR) S-4/A Registration of securities issued in business combination transactions (amended)

Exhibit 23.1

CONSENT OF THE INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the use in this Registration Statement No. 333-271862 on Form S-4 of our report dated May 12, 2023, relating to the financial statements of Allurion Technologies, Inc. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

/s/ Deloitte & Touche LLP

Boston, Massachusetts

June 26, 2023