Patent ID: 6350245
Filing Date: 2002-02-26
Classification: A61B,A61M,A61N

Abstract:
A hand-held ultrasonic surgical apparatus for fragmenting or emulsifying a predetermined volume of animal tissue located beneath the skin of an animal comprising:a housing to be held and manipulated during surgery; an acoustic assembly mounted within the housing that vibrates at a resonant vibratory frequency, the resonant vibratory frequency determined by the length and shape of the acoustic assembly and within the range between 100 kHZ and 250 kHZ; the acoustic assembly having an axis along which ultrasonic vibratory energy is directed and an ultrasonic motor with a distal surface and a proximal surface, the ultrasonic motor aligned along the axis; a rear driver of the acoustic assembly connected to the proximal surface of the ultrasonic motor and aligned along the axis; a front driver of the acoustic assembly connected to the distal surface of the ultrasonic motor and aligned along the axis; a compression fastener aligned along the axis and passing through the rear driver and the ultrasonic motor and connected to the front driver so that the ultrasonic motor is under compression between the front driver and the rear driver; and a focusing lens connected to the front driver within the acoustic assembly and aligned along the axis thereof, said focusing lens having a generally concave surface for contact with the skin of the animal and cooperating with the acoustic assembly to deliver vibratory energy to the animal tissue, concentrated generally at a focal length from the concave surface, without significant heating of the animal tissue.