Ultrasonic calculus treatment apparatus

Details Ultrasonic calculus treatment apparatus Ultrasonic calculus treatment apparatus

2007-06-12

2007-06-12

Nguyen, Anhtuan T. (Department: 3731)

Surgery

Instruments

Cutting, puncturing or piercing

C606S128000, C604S022000

Reexamination Certificate

active

10223793

ABSTRACT:
An ultrasonic calculus treatment apparatus includes a longitudinal-vibration piezoelectric oscillator for vibrating in the axial direction of an ultrasonic transmitting member and a torsional-vibration piezoelectric oscillator for vibrating about the axial direction, and further includes driving circuits for driving the piezoelectric oscillators at respective resonance frequencies and a mode selection switch for permitting the oscillators to vibrate independently or in combination, so that lithotripsy can be performed effectively in accordance with the size of a calculus or a function of an operating tool.

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