MPL 9000 lithotriptor may be characterized by ultrasonic localization, automatic target system, water cushion and under water spark gap generation of shock wave. In effort to evaluate clinical efficiency of this machine, we analyzed therapeutic
results
of 250 cases of urinary calculi treated by extracorporeal shock wave lithotripsy (ESWL) using MPL9000 lithotriptor. Technically it was difficult to visualize the upper ureter stones with ultrasonic scanning, so all of them were pushed up before
treatment. For staghorn stones or large stones, percutaneous nephrolithotomy (PCNL) or ureteral stenting were performed before treatment selectively. The overall stone free rate, at 4 weeks after last session, was 89.2% while that of stones
larger
than
3cm was 50%. The complication such as gross hematuria, flank pain, steinstrasse and were controlled successfully by conservative treatment. In conclusion, ESWL with MPL 9000 might be successful in most patients with urolithiasis but in cases of
large
renal stone or upper ureteral stone auxiliary procedures will be required.
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