EXHIBIT 23.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statement No. 333-117354 of Kensey Nash Corporation and Subsidiaries on Form S-8 of our report dated September 13, 2004, appearing in this Annual Report on Form 10-K of Kensey Nash Corporation and Subsidiaries for the year ended June 30, 2004. DELOITTE & TOUCHE LLP Philadelphia, Pennsylvania September 13, 2004 91