Clinical Trial

Comparing Efficiency and Stone-Free Rates Mini PCNL vs Flex URS

Recruiting
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Summary
The objective of the study is to compare the stone free rates with ureteroscopy utilizing the ClearPETRA suction ureteral access sheath, and mini-PCNL; both procedures and ClearPETRA sheaths are standard of care and are used regularly for stone treatment. Our primary objective is to assess the complete stone free rate with both procedures.
Protocol Amendment History 3 amendments
This ClinicalTrials.gov record has been amended 3 times since 2025-07-09; most recent amendment 2026-04-26.
Status change: Not Yet Recruiting → Recruiting 2026-04-26
Trial Details
NCT Number NCT07072598
Lead Sponsor Northwestern University
Collaborators: KARL STORZ Endoscopy-America, Inc.
Conditions Kidney Stones, Nephrolithiasis, Urolithiasis
Enrollment 80 participants
Start Date 2026-04-25
Primary Completion 2027-07 (estimated)
Study Completion 2027-12 (estimated)
Updated on ClinicalTrials.gov 2026-04-30