Clinical trial Recruiting at 1 site Interventional Ages 18 to 75

Direct in-scope suction during flexible ureterorenoscopy for kidney and proximal ureter stones

Official title: Flexible Ureterorenoscope With Suction: An Innovative Approach

Run by Hitit University · NCT07864194 · Data updated 2026-11-12

This study tests whether using direct in-scope suction during flexible ureterorenoscopy helps reduce infections and improve outcomes for adults with kidney or proximal ureter stones.

Quick facts

Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment70 (estimated)
SponsorHitit University
Academic / other
Locations1 site (Çorum, Çorum)
StatusRecruiting
StartedJuly 7, 2026
Main results expectedOctober 30, 2026
Study endsNovember 15, 2026
Registry record updatedOctober 7, 2026
Trial IDNCT07864194 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults 18 years and older with a single kidney or proximal ureter stone scheduled for RIRS at the study site.

Probably not a fit

Patients with multiple stones, preexisting urinary tract infection, pregnancy, or bleeding disorders may not benefit and are excluded.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This prospective, randomized study compares standard flexible ureterorenoscopy to a suction-enabled approach during retrograde intrarenal surgery (RIRS) for renal or proximal ureteral stones. Seventy adults will be enrolled and assigned 1:1 to either conventional ureterorenoscopy or direct in-scope suction (DISS) with single-use equipment. Outcomes include postoperative infections (fever, SIRS, sepsis), operative parameters, length of stay, need for reoperation, and stone-free status assessed by CT at four weeks. Data collection occurs intraoperatively and through postoperative follow-up at the single center in Çorum, Türkiye. The trial aims to determine if DISS improves visualization, lowers intrarenal pressure-related complications, and enhances overall recovery.

Why it matters

Potential benefit: If successful, using DISS could reduce infectious complications and improve stone clearance after RIRS.

How similar studies have gone: Previous work suggests suction-assisted approaches may improve visualization and safety, but this exact DISS comparison in RIRS is being tested.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adults aged 18 years or older.
* A single stone located in the kidney or proximal ureter.
* Scheduled to undergo retrograde intrarenal surgery (RIRS) by the study's surgical team.

Exclusion Criteria:

* Multiple renal or proximal ureteral stones.
* Age younger than 18 years.
* Pregnancy.
* Preoperative urinary tract infection.
* Bleeding diathesis.

Where it's running

  • Department of Urology, Hitit University Çorum Erol Olçok Training and Research Hospital, Çorum, Türkiye
    Çorum, Çorum, Turkey (Türkiye)
    Recruiting

Study contacts

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.