Patent ID: 9737735
Date: 2017-08-22
CPC Classifications: A61B,A61M,A61N,B06B,B29C,B29L,G10K,Y10T

Claim:
1. An ultrasonic core for an ultrasonic surgical apparatus, the core comprising: a longitudinally elongated, generally planar waveguide constructed from a single crystal or polycrystalline material, the waveguide including a transduction portion and a distal resonator, the transduction portion and the distal resonator having the same thickness; and a transducer structure affixed to the transduction portion of the waveguide; wherein the distal resonator is configured to vary the magnitude of a mode of ultrasonic vibration created in the transduction portion and includes a proximal end having first transverse extent, a distal end having a second, lesser transverse extent, and a body generally narrowing between the first and second transverse extents; and wherein the edges of the body of the distal resonator are asymmetric with respect to the central longitudinal axis of the wave guide.