WEST CHESTER, Ohio, Sept. 10 /PRNewswire-FirstCall/ -- AtriCure, Inc. (Nasdaq: ATRC - News), a medical device company focused on developing, manufacturing and selling innovative cardiac surgical devices, announced today that its Cosgrove-Gillinov Left Atrial Appendage Occlusion System was successfully implanted during an open-heart surgical procedure performed by Professor Michele Genoni and Dr. Sacha Salzberg of The University of Zurich in Switzerland with the support of Dr. Marc Gillinov of the Cleveland Clinic.