EXHIBIT 23.3 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in this Registration Statement of Cardia, Inc. on Form S-8 pertaining to the Cardia, Inc. 1999 Omnibus Stock Incentive Plan of our report dated March 18, 1999, appearing in the Annual Report on Form 10-KSB, as amended by Form 10-KSB/A, of Cardia, Inc. for the fiscal year ended December 31, 1999. /s/ PriceWaterhouse Coopers LLP PRICEWATERHOUSE COOPERS LLP Minneapolis, Minnesota August 11, 2000 17