Remote spark shock wave generator
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United States of America Patent
Stats
-
Oct 30, 1990
Grant Date -
N/A
app pub date -
Dec 1, 1988
filing date -
Dec 1, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus is provided for the extracorporeal destruction of kidney stones, and includes an ellipsoidal reflector. The reflector has a first focus point, and a second focus point, the reflector being truncated and the second focus point being disposed beyond the resulting open end of the reflector for coincidence with a kidney stone or the like. An extension from the apex of the reflector has a cavity with a spark gap therein. The cavity opens into the reflector, and the cavity and reflector are filled with liquid such as water. A spark produced across the spark gap produces a shock wave which moves to the first focus point of the reflector and is reflected to the second focus point.
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