Patent ID: 8394115
Filing Date: 2013-03-12
Classification: A61B

Abstract:
1. A composite end effector for an ultrasonic surgical instrument comprising: a first portion formed from a first material selected from the group consisting of aluminum, aluminum alloy, titanium and titanium alloy, wherein said first material exhibits a first ultrasonic propagation wavelength when excited by an ultrasonic energy input; and a second portion formed from a second material selected from the group consisting of ceramic, alumina, sapphire, ruby, alumina nitride, zirconia, silicon carbide and silicon nitride, wherein said second material exhibits a second ultrasonic propagation wavelength when excited by said ultrasonic energy input; wherein said composite end effector exhibits a composite ultrasonic propagation wavelength that is between said first and second ultrasonic propagation wavelengths when excited by said ultrasonic energy input.