The ultrasonic scalpel blade includes a blade having an included blade edge angle of 25.degree. and greater such that, upon application of ultrasonic power, the otherwise blunt blade has a perceived sharpness corresponding to the sharpness of manually used scalpel blades with the added advantage of improved...http://www.google.fr/patents/US5263957?utm_source=gb-gplus-shareBrevet US5263957 - Ultrasonic scalpel blade and methods of application
Ultrasonic scalpel blade and methods of application