Means and method for the noninvasive fragmentation of body concr

Details Means and method for the noninvasive fragmentation of body concr Means and method for the noninvasive fragmentation of body concr

1984-05-08

1986-09-09

Crowder, Clifford D.

Surgery

Truss

Pad

A61B 1722

Patent

active

046102493

ABSTRACT:
Apparatus and method for noninvasive fragmentation of body concretions. The apparatus has an integral unit including an ultrasonic locating transducer and positioning structure. The concretion is localized with ultrasonics and then shattered upon generation of a shockwave, using a relfector with first and second foci. A spark gap at the first focus generates the shockwave which propagates to the second focus coincident with the concretion. The ultrasonic tranducer is positioned so that an axis of the transducer is coincident with a straight line passing through the first and second foci.

REFERENCES:
patent: 3942531 (1976-03-01), Hoff
patent: 4311147 (1982-01-01), Hausler
Chaussy, Extracorporeal Shock Wave Lithotripsy, 1980, pp. 1-111, "Beruhrungsfreie Nierensteinzertrummerung Durch Extrakorporal Erzeugte, Fokussierte Stosswellen", beitrage Zur Urologie, vol. 2 (Krager, Basel 1980) ISBN 3-8055-1901-X.

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