Flexible vs semi-rigid for upper ureter stones
Part of Kidney & urinary, Women’s health & pregnancy clinical trials.
This trial compares two types of ureteroscopes (flexible and semi-rigid) to see which works better for removing stones in the upper part of the tube that carries urine from the kidney to the bladder. It may help you if you have a single stone there that's no bigger than 20 mm.
Summary written for real people, not researchers, by Clin2.
Who can take part
- Must be 18 years or older
- Have a stone in the upper ureter (the tube connecting kidney to bladder)
- The stone must be 20 mm or smaller in size
- No stones in the kidney itself
- Must be healthy enough for anesthesia (sleep medicine during procedure)
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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