Ultrasonic lithotrity apparatus

Details Ultrasonic lithotrity apparatus Ultrasonic lithotrity apparatus

1987-06-19

1989-02-14

Smith, Ruth

Surgery

Truss

Pad

128 24A, 128328, A61B 1722

Patent

active

048039950

ABSTRACT:
An ultrasonic lithotrity apparatus is held such that its installation position can be adjusted with respect to a stone formed in a living body, and has an ultrasonic lithotrity transducer for emitting an intense ultrasonic wave for breaking up the stone. The ultrasonic lithotrity transducer emits a weak ultrasonic wave immediately before every single or every predetermined number of intense ultrasonic waves is emitted. The position of a stone in the living body can be determined in accordance with a reflected wave of the weak ultrasonic wave. On the basis of reception of the reflected echo signal, the position of the stone is determined. In accordance with the determination result, electronic circuits determine whether the weak or intense ultrasonic wave is to be emitted from the ultrasonic lithotrity transducer.

REFERENCES:
patent: 4610499 (1986-09-01), Makofski et al.
patent: 4617931 (1986-10-01), Dory
patent: 4658828 (1987-04-01), Dory

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