A Comparative Study Between the Usage of Flexible and Navigable Suction Ureteral Access Sheath Versus Traditional Access Sheath in Retrograde Intrarenal Surgeries

Launched by YOSSEIF ELHOUSSEINY AMMAR AHMED · Jul 11, 2025

Keywords

ClinConnect Summary

This clinical trial is comparing two different tools used during a type of kidney stone surgery called Retrograde Intrarenal Surgery (RIRS). One tool is a newer, flexible suction device designed to help remove kidney stones more easily, while the other is the traditional tool commonly used. The goal is to see which tool works better or offers advantages during the procedure.

The study is open to people aged 14 and older who have kidney stones up to 2 centimeters in size, confirmed by a CT scan, and who do not have certain medical conditions that cause stones or unusual kidney anatomy. Participants should not have infected urine or a history of major kidney surgeries on the affected side. If you join, you’ll be randomly assigned to have surgery with either the new flexible suction tool or the traditional one, and the doctors will compare the results to learn which method is safer or more effective. This study is still recruiting patients, and anyone interested should meet the eligibility criteria and be able to follow the study instructions.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • Age ≥14 years old in patients not known to have stone forming medical conditions.
• • Renal stones diameter of ≤2 cm confirmed by CT with all types of configurations (branching \& non-branching).
• • Non - recurrent cases with no history of previous open renal surgeries or PCNL with normal renal anatomy.
• • Patients with non - infected urine analysis.
• Exclusion Criteria:
• • Patients with abnormal urinary tract anatomy (such as horseshoe kidney or ileal conduit).
• • Patients with medical conditions promoting stone formation (hyperparathyroidism - gout).
• • Patients with history of stones on the same side with previous open surgical intervention or PCNL .
• • Patients with e-GFR \< 60 ml / min.
• • Patients with uncontrolled urinary tract infection.
• • Patients with health or other factors that are absolute contraindications to RIRS.
• • Patients who are unable to understand or complete trial documentation.