Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Compare two suction ureteroscope devices for kidney stones (FANS vs CVAC)

Official title: Randomized Controlled Trial of Flexible and Navigable Suction (FANS) vs. CVAC Suction Ureteroscope for Medium to Large Stones

Run by Ohio State University · NCT07514351 · Data updated 2026-11-12

This study tests whether two new suction-enabled ureteroscopes (FANS and CVAC) lead to better stone clearance for adults with small to medium kidney stones compared to each other.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment159 (estimated)
SponsorOhio State University
Academic / other
Locations1 site (Columbus, Ohio)
StatusRecruiting
StartedJuly 1, 2026
Main results expectedJune 2028
Study endsDecember 2028
Registry record updatedOctober 16, 2026
Trial IDNCT07514351 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults with nephrolithiasis and total stone diameter 8–20 mm eligible for ureteroscopic treatment.

Probably not a fit

Patients with contraindications to general anesthesia or stone sizes outside 8–20 mm may not benefit.

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

What this trial studies

Patients with kidney stones 8–20 mm undergoing ureteroscopy will be randomly evaluated with two new suction-enabled scopes, FANS and CVAC, to see which device helps remove stone fragments more effectively. The trial focuses on comparing immediate clearance and procedure efficiency using these technologies. It is conducted at Ohio State University and aims to inform whether suction-assisted ureteroscopy improves outcomes for stones under 2 cm. Traditional ureteroscopy has improved with laser lithotripsy, but suction capabilities may further enhance stone-free rates.

Why it matters

Potential benefit: If successful, the study could identify which suction ureteroscope provides higher stone-free rates and more efficient procedures.

How similar studies have gone: Prior advances in suction-assisted ureteroscopy have shown promise, but direct head-to-head comparisons of these two devices are limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Clinical diagnosis of Nephrolithiasis
* Total linear stone diameter 8-20 mm in size

Exclusion Criteria:

* Severe medical comorbidities causing inability to undergo general anesthesia

Where it's running

  • Ohio State University
    Columbus, Ohio, United States
    Recruiting

Study contacts

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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.