title: Ultrasonic lithotriptor for urethral and bladder stones.
abstract: Bladder or urethral calculi in 50 patients were effectively fragmented and removed per-urethrally using an ultrasonic lithotriptor with the probe vibrating at 30,000 implulses/s. In adults, local anaesthesia was employed and the operation performed as an out-patient procedure. The method has the advantages over others discussed in that a small (23 F) sheath is used and that damage to the bladder or urethra by the probe is avoided. Using a newer, modified sheath resembling that for punch prostatectomy, larger stones can be fragmented by engaging the stone in the fenestrum of the sheath.
mesh_terms: D002648:Child; D020684:Cystoscopes; D005069:Evaluation Studies as Topic; D006801:Humans; D014464:Ultrasonic Therapy / Q000295:instrumentation*; D014522:Urethral Diseases / Q000628:therapy*; D001744:Urinary Bladder Calculi / Q000628:therapy*; D014572:Urology / Q000295:instrumentation*