| 摘要 |
A shock wave source for use in a shock wave generator in an apparatus for extracorporeal lithotripsy treatment of a patient has a shock wave tube filled with a shock wave propagating medium with one end closed by a flexible sack for coupling to the patient, and an opposite end closed by a membrane having at least a portion thereof which is electrically conductive, and a coil disposed adjacent the membrane and connected to a high voltage pulse source. When high voltage pulses are applied to the coil, an electromagnetic field is generated which rapidly repells the membrane, thereby generating a shock wave. The membrane has a flexible base covered by a number of discrete laminae of conductive material. At least some of the laminae may have respectively different mass moments of inertia and/or electrical conductivity. The shock wave source is suitable for treating calculi such as kidney stones.
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