EX-23 4 c81209exv23.txt CONSENT OF ERNST & YOUNG LLP Exhibit 23 Consent of Independent Auditors We consent to the incorporation by reference in the Registration Statements on Form S-8 No. 333-55154 pertaining to the ATS Medical, Inc. 2000 Stock Incentive Plan, Form S-8 No. 333-49985 pertaining to the 1998 Employee Stock Purchase Plan, Form S-8 No. 33-44940 and 333-49985 pertaining to the 1987 Stock Option and Stock Award Plan of ATS Medical, Inc. (formerly Helix Biocore, Inc.), Form S-3 No. 333-108150 pertaining to the registration of 4,400,000 shares of ATS Medical, Inc., Form S-3 No. 333-43360 pertaining to the registration of 2,727,273 shares of ATS Medical, Inc. common stock, and Form S-3 No. 333-39288 pertaining to the registration of 1,100,000 shares of ATS Medical, Inc. common stock, of our report dated February 6, 2004, with respect to the consolidated financial statements and schedule of ATS Medical, Inc. included in the Annual Report (Form 10-K) for the year ended December 31, 2003. /s/ Ernst & Young LLP Minneapolis, Minnesota March 10, 2004