An ultrasonic clamp coagulator assembly embodying the principles of the present invention is configured to permit selective cutting, coagulation, and clamping of tissue during surgical procedures. In an ultrasonic blade according to the present invention, the blade is constructed such that the cross-sectional...http://www.google.de/patents/US6254623?utm_source=gb-gplus-sharePatent US6254623 - Ultrasonic clamp coagulator surgical instrument with improved blade geometry
