Apparatus and method for generating shockwaves for the destruction of targets, particularly in extracorporeal lithotripsy
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United States of America Patent
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Aug 10, 1993
Grant Date -
N/A
app pub date -
May 15, 1990
filing date -
Nov 16, 1987
priority date (Note) -
Expired
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Abstract
The invention relates to a process for manufacturing a device generating shockwaves which are only slightly, if at all, felt be the patients. This shockwave generating device comprises a truncated ellipsoidal reflector (12) which has a ratio (b)/(a) greater than 0.69, and preferably between 0.60 and 0.85 and a connection (14) supplying electric current to the electrodes (6, 8), which connection comprises a capacitor (18) having a capacitance less than or equal to 500 nanofarads. The result is a reduction of the energy density at skin level of the emitted shockwaves which are only slightly, if at all, felt by the patients, thus permitting a treatment without anaesthesia.
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