Process of Change from Ultrasonic Wave to Shock Wave in Extracorporeal Shock Wave Lithotripsy Using Piezoceramic Transducer
نویسندگان
چکیده
منابع مشابه
[Extracorporeal shock-wave lithotripsy].
Concrement lithotripsy in the kidney and ureter using extracorporeal shock waves (ESWL) was performed with the aid of a 2nd-generation lithotriptor--Lithostar Siemens. Over a period of 11 months ESWL was applied in 526 patients aged 7 to 80 years, 10 of these were children. 19 patients had bilateral lithiasis so that the treatment was applied to a total of 545 renoureteral units and 698 concrem...
متن کاملUltrasound Underwater Transducer for Extracorporeal Shock Wave Lithotripsy (eswl)
This paper presents an ultrasound piezoceramic transducer, centred into an extracorporeal shock wave lithotriptor system. The electromagnetic acoustic source lithotriptor initiates the incident shock waves into the water, and the ultrasound transducer improves the caviational effects of the bubbles. The piezoelectric transducer is powered by a Function/Pulse Generator type IWATSU SG-4511, and c...
متن کاملExtracorporeal shock wave lithotripsy of pancreatic stones.
Extracorporeal shock wave lithotripsy of pancreatic stones was performed in eight patients with chronic pancreatitis and a dilated duct system harbouring stones 5 to 20 mm (means 10 (SD) 5 mm) in diameter. After endoscopic sphincterotomy of the pancreatic orifice the stones were disintegrated by shock waves under fluoroscopic control using a kidney lithotripter (Dornier HM3). The procedure was ...
متن کامل[Clinical study of extracorporeal shock wave lithotripsy].
Extracorporeal shock wave lithotripsy was performed on 81 patients with urolithiasis (35 patients with ureteral stones, 25 patients with renal stones less than 2 cm in diameter, and 21 patients with renal stones more than 2 cm in diameter) at Kanbara Hospital from August to October, 1986. A 4 Fr catheter was placed transurethrally in the ureter up to the stone to identify the stone position and...
متن کامل[Stone burden on extracorporeal shock wave lithotripsy].
Based on the 89 stones treated by ESWL therapy alone, the factors which influence the number of ESWL shots were analyzed. Stone volume was calculated by summing up the value "length x short axis" for each stone. The value correlated well with the number of shots needed to disintegrate the stone (p less than 0.01). The stones below the pelvis-ureteral junction needed twice shots compared with st...
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ژورنال
عنوان ژورنال: Japanese Journal of Applied Physics
سال: 1991
ISSN: 0021-4922,1347-4065
DOI: 10.7567/jjaps.30s1.216