Actively Recruiting
Comparing Efficiency and Stone-Free Rates Mini PCNL vs Flex URS
Led by Northwestern University · Updated on 2026-04-30
80
Participants Needed
1
Research Sites
83 weeks
Total Duration
On this page
Sponsors
N
Northwestern University
Lead Sponsor
K
KARL STORZ Endoscopy-America, Inc.
Collaborating Sponsor
AI-Summary
What this Trial Is About
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.
CONDITIONS
Official Title
Comparing Efficiency and Stone-Free Rates Mini PCNL vs Flex URS
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Patients 18 years or older
- Have a CT scan showing renal stones 1-3cm in length
- Patients who will be able to read, understand, and complete patient questionnaires
You will not qualify if you...
- Pregnant individuals
- Those with anomalous renal anatomy
- Patients with a urinary diversion (ex: Ileal conduit, reservoir, bladder substitute, etc.)
- Any condition rendering patient medically unfit to undergo either procedure (Bleeding diasthesis)
- Patients who lack decisional capacity
- Patients who are non-english speakers*
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Trial Site Locations
Total: 1 location
1
Northwestern Memorial Hospital
Chicago, Illinois, United States, 60611
Actively Recruiting
Research Team
A
Alyssa McDonald, MPH
CONTACT
How is the study designed?
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
2
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