Exhibit 16.1 April 20, 2001 Securities and Exchange Commission 450 5th Street, N.W. Washington, D.C. 20549 Commissioners: We have read the statements made by Bio-Vascular, Inc. (copy attached), which we understand will be filed with the Commission, pursuant to Item 4 of the Form 8-K, as part of the Company's Form 8-K report dated April 19, 2001. We agree with the statements concerning our Firm in such Form 8-K. Very truly yours, /s/ PricewaterhouseCoopers LLP PricewaterhouseCoopers LLP