| 摘要 |
PROBLEM TO BE SOLVED: To provide a cystolith of a simple structure which can be easily inserted into the urethra to easily crush cystoliths without giving pain to a patient. SOLUTION: This cystolith crusher comprises a circular hollow body having a thin tube part of such a diameter as to be inserted into the urethra, and a thick tube part including an explosive charging part, a head part charged into the thick tube part, and a leg part coupled with the head part and inserted into the thin tube part.
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