Injury-free coupling and decoupling of therapeutic shock waves

Details Injury-free coupling and decoupling of therapeutic shock waves Injury-free coupling and decoupling of therapeutic shock waves

1982-11-22

1985-09-10

Cohen, Lee S.

Surgery

Truss

Pad

A61B 1722

Patent

active

045399891

ABSTRACT:
An improved instrument for destroying concretions within the body of living tissue, with a focusing chamber which is a part of an ellipsoid of revolution and at one focus of which shock waves are generated by arc discharge, the improvement comprising that a pad (8) filled with degassed water and of which the front and rear sides thereof (10 and 12 respectively) are composed of shape-adapting, acoustically matched thin foils, is located between the liquid-filled focusing chamber (16) and the coupling site (6) to the body (2), the pad permitting simultaneous introduction of X-rays or ultrasonic waves to locate the concretion and to monitor the success in comminuting, and a second water pad (24) similar to the first pad is located at the body decoupling site and encloses the body over a large area, the rear side thereof being fastened by means of a damping or diffusely reflecting layer (26), for instance foam rubber, to a rigid dish (28) composed of one or more parts.

REFERENCES:
patent: 3356086 (1967-12-01), Behney
patent: 4311147 (1982-01-01), Hausler

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