EP 0256232 B1 19910116 - SHOCK WAVE GENERATOR FOR THE DISINTEGRATION OF CONCRETIONS IN A LIVING BODY USING NON-CONTACTING MEANS
Title (en)
SHOCK WAVE GENERATOR FOR THE DISINTEGRATION OF CONCRETIONS IN A LIVING BODY USING NON-CONTACTING MEANS
Publication
Application
Priority
DE 3620189 A 19860616
Abstract (en)
[origin: US4796608A] A shock wave generator for use in an apparatus for non-contacting disintegration of calculi in the body of a life form (extracorporeal lithotripter) having a coil with helical windings and a membrane of electrically conductive material disposed opposite the coil, the membrane terminating a space filled with a liquid. The coil is connectable to a high voltage supply. The coil has two layers connected in series and overlapping each other in parallel planes, with the respective current direction and winding direction of the layers being selected in combination to intensify the magnetic fields of each layer. A layer of the coil having a smaller voltage difference relative to the membrane is disposed immediately adjacent the membrane. The arrangement increases the useful life of the membrane without significantly reducing the efficiency of converting the electrical energy into shock wave energy.
IPC 1-7
IPC 8 full level
A61B 17/22 (2006.01); A61B 18/00 (2006.01); B06B 1/02 (2006.01); G10K 9/12 (2006.01)
CPC (source: EP US)
G10K 9/12 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0256232 A1 19880224; EP 0256232 B1 19910116; DE 3767405 D1 19910221; JP S6368314 U 19880509; US 4796608 A 19890110
DOCDB simple family (application)
EP 87108117 A 19870604; DE 3767405 T 19870604; JP 9027987 U 19870610; US 4951887 A 19870514