[Disintegration of kidney calculi by piezoelectrically generated high-energy sound waves. Physical principles and experimental studies].
The recently developed equipment for extracorporeal piezoelectric lithotripsy (EPL) represents an improvement concerning the shock-wave-induced disintegration of urinary calculi. While the usual spark gap transmitter needs a focusing reflector, the piezoelectric lithotriptor is based on a self-focusing spherical bowl transmitter. The stone is detected exclusively by ultrasound. For this purpose, an integrated sector scanner is used as well as the high-energy sound transmitter itself. With the piezoelectrically generated high-energy sound pulses we have succeeded in completely disintegrating implanted stones in the renal pelvis of dogs without injuring the morphology or function of the exposed kidneys.
D000818:Animals; D004285:Dogs; D007668:Kidney / Q000473:pathology; D007669:Kidney Calculi / Q000473:pathology / Q000628:therapy*; D008096:Lithotripsy / Q000295:instrumentation*
Die Zertrümmerung von Nierensteinen durch piezoelektrisch erzeugte Hochenergie-Schallpulse. Physikalische Grundlagen und experimentelle Untersuchungen.