Shock wave generator for an extracorporeal lithotripsy device

Details Shock wave generator for an extracorporeal lithotripsy device Shock wave generator for an extracorporeal lithotripsy device

1988-04-15

1990-03-06

Smith, Ruth S.

Surgery

Truss

Perineal

A61B 1722

Patent

active

049056751

ABSTRACT:
A shock wave generator suitable for use in an extracorporeal lithotripsy device to disintegrate calculi in a life form in vivo has a flat coil connectable to a high voltage supply, a membrane assembly disposed opposite the coil and a housing, closed on one side by the membrane, filled with a shock wave transmissive fluid. The membrane assembly has a carrier plate of electrically insulating material, and an electrically conductive section applied at one side of the carrier. The membrane assembly is connected to the housing at its edge. The material of the carrier is insensitive to cavitation, and the carrier is elastically yielding at least in the region of its edge. The electrically conductive section is electrically insulated from the terminals of the coil, and the membrane assembly is attached to the housing so that the electrically conductive section faces the flat coil.

REFERENCES:
patent: 4539989 (1985-09-01), Forssmann et al.
patent: 4669472 (1987-06-01), Eisenmenger
patent: 4793329 (1988-12-01), Mahler et al.
patent: 4794914 (1989-01-01), Mahler et al.

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