Patent ID: 6358264
Filing Date: 2002-03-19
Classification: A61B

Abstract:
A surgical instrument comprising:a hollow shaft having an inner passage; a working piece mounted to the distal end of said shaft; an ultrasonic transducer to produce vibratory mechanical energy that is applied to said shaft to be deliberately propagated along said shaft to vibrate said working piece, wherein the vibratory mechanical energy along said shaft has a pattern with at least one nodal point of reduced energy; a movable member pivotally mounted on said shaft at a said nodal point of the vibratory mechanical energy in cooperative relationship to said working piece; a connecting element extending along the shaft inner passage having one end exiting thorough an opening in said shaft and connected to said movable member; and an actuating member connected to said connecting element which upon actuation pushes and pulls on said connecting element to move said movable member toward and away from said working piece.