EX-10.23 4 c75660exv10w23.txt LETTER AGREEMENT WITH MANUEL A VILLAFANA Exhibit 10.23 [ATS MEDICAL LETTERHEAD] November 1st, 2002 Manuel A. Villafana, Chairman ATS Medical, Inc. 3905 Annapolis Lane Minneapolis, MN 55447 Subject: Consulting Agreement Renewal/Extention Dear Manny; In accordance with the terms of the Consulting Agreement that we have with you, we hereby extend the term for an additional one year thru December 31st, 2003. As always, ATS reserves the right to extend the Agreement on a yearly basis if mutually agreed upon. Sincerely yours, ATS MEDICAL, INC. /s/ Michael D. Dale Michael D. Dale President/CEO