EXHIBIT 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the use in the Prospectus constituting part of this Registration Statement on Form S-4 of Cardia, Inc. of our report dated March 18, 1999, relating to the financial statements of Cardia, Inc., which appears in such Registration Statement. We also consent to the reference to us made under the heading "Independent Accountants." /s/ PricewaterhouseCoopers LLP PRICEWATERHOUSECOOPERS LLP Minneapolis, Minnesota August 9, 1999