| 摘要 |
The invention concerns a lithotripter apparatus for very accurately breaking up kidney stones using a shock wave generator while compensating the wear of the electrodes constituting said generator. It comprises a mount frame (11), a treatment table (12) to bear a patient during a lithiasis (35) break up treatment, a shock wave generator, means for focusing said shock waves onto the lithiasis and a device for displaying live (60) the treatment zone, the shock wave generator comprising two electrodes (33, 34) spaced apart from each other. The means focusing the shock waves comprise a semi-ellipsoidal reflector (17), the ends (33a, 34a) of said electrodes being arranged substantially at one (Fe) of the focal points of the reflectors (17), the other focal point (Fr) of the reflector being centred on the lithiasis. The electrodes (33, 34) are provided with a wear-compensating mechanism designed to move them axially, independently of each other, along an axis corresponding to the axis of symmetry of the reflector (17), one of the electrodes being further capable of rotating relative to the second one such that the wear is uniform.
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