Apparatus for contact-free disintegration of kidney stones or ot

Details Apparatus for contact-free disintegration of kidney stones or ot Apparatus for contact-free disintegration of kidney stones or ot

1980-05-08

1982-01-19

Cohen, Lee S.

Surgery

Truss

Pad

A61B 1722

Patent

active

043111475

ABSTRACT:
This invention relates to apparatus for contact-free disintegration of kidney stones or other calculi of the kind in which electrical discharges are generated across an under water spark gap in the focus line of an elliptical reflector having annular or spiral surfaces. The calculus which is to be disintegrated is located into the focus of the reflector and in accordance with invention electrode elements are positioned at intervals in the focus line of this reflector on an insulating carrier. The latter is provided with high tension connectors at its ends and the electrode elements are arranged to form consecutive individual spark gaps.
The gaps between the electrode elements may be of constant dimensions or may vary so as to produce variations in pressure distributed at a focus point if so desired.

REFERENCES:
patent: 3237623 (1966-03-01), Gordon
patent: 3785382 (1974-01-01), Kloiber et al.
patent: 3942531 (1976-03-01), Hoff et al.
patent: 4094306 (1978-06-01), Kossoff

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