EXHIBIT 31.2

                                  CERTIFICATION

I, John R. Judd, certify that:

      1.    I have reviewed this annual report on Form 10-K of ATS Medical,
            Inc.; and

      2.    Based on my knowledge, this report does not contain any untrue
            statement of material fact or omit to state a material fact
            necessary to make the statements made, in light of the circumstances
            under which such statements were made, not misleading with respect
            to the period covered by this report.

Date:  March 21, 2005

       /s/  John R. Judd
       ------------------------------
Name:  John R. Judd
Title: Chief Financial Officer

                                       6