Abstract
The Northgate SD-3 is a bathless, portable shock wave lithotriptor made in the United States. It uses ultrasound localization and spark-gap, electrode- generated shock waves to fragment calculi in the upper urinary tract. Since October 1987, 312 treatments have been performed on 281 patients (286 kidneys) with stone burdens less than 2 cm. during clinical trials at 6 investigational sites in the United States. A fragmentation rate of 94% was achieved. Of the treatments 78% were judged successful (stone-free or fragments of less than 5 mm. remaining in an asymptomatic patient) and a 3- month stone-free rate of 58% was noted. The retreatment rate was 9% and the ancillary procedure rate was 5%. The complications (hematuria, ecchymosis, pain, obstruction) were mild and not unlike those seen in patients undergoing lithotripsy with other devices.
Original language | English (US) |
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Pages (from-to) | 1047-1051 |
Number of pages | 5 |
Journal | Journal of Urology |
Volume | 148 |
Issue number | 3 II |
DOIs | |
State | Published - 1992 |
Externally published | Yes |
Keywords
- clinical trials
- kidney calculi
- lithotripsy
ASJC Scopus subject areas
- Urology