Surgery – Truss – Perineal
Patent
1989-03-01
1991-01-22
Cohen, Lee S.
Surgery
Truss
Perineal
12866003, A61B 1722
Patent
active
049862596
ABSTRACT:
This invention relates to an apparatus for disintegrating calculus having a main ultrasonic transducer for emitting a high power ultrasonic shock wave to disintegrate a kidney stone in a patient, and for emitting a weak ultrasonic shock wave, before emitting the high power ultrasonic shock wave. A sound receiver receives sounds generated by the patient's body in response to the weak ultrasonic shock wave, and converts the sounds into electrical signals. A kidney stone confirming circuit receives electrical signals from the sound receiver and determines whether the kidney stone is positioned at the focal point of the main transducer. The apparatus prevents the emission of the high power ultrasonic shock wave when the position of the kidney stone is not coincident with the focal point of the main transducer in order to prevent any harm to the patient's normal tissue.
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Aida Satoshi
Iwama Nobuyuki
Cohen Lee S.
Kabushiki Kaisha Toshiba
Zele John D.
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