This is a prospective, interventional single blinded, randomized, single-center study designed to compare the efficacy of a ureteral access sheath with integrated suction (FANS) versus a standard ureteral access sheath (UAS) in patients undergoing ureterorenoscopy and laser lithotripsy for renal stones. The hypothesis is that the use of the FANS device improves stone-free rates and reduces postoperative infectious complications compared to the standard sheath.
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This ClinicalTrials.gov record has been amended once since 2026-03-06.