An ultrasonic surgical instrument including an ultrasonically actuated blade or end effector having a treatment portion. The blade can define a central axis and at least one axis which is transverse to the central axis, wherein the transverse axis can lie within a plane which is perpendicular, or normal,...http://www.google.com/patents/US8057498?utm_source=gb-gplus-sharePatent US8057498 - Ultrasonic surgical instrument blades
