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 type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 159 (estimated) |
| Sponsor | Ohio State University Academic / other |
| Locations | 1 site (Columbus, Ohio) |
| Status | Recruiting |
| Started | July 1, 2026 |
| Main results expected | June 2028 |
| Study ends | December 2028 |
| Registry record updated | October 16, 2026 |
| Trial ID | NCT07514351 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
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Ohio State University
Columbus, Ohio, United States Recruiting
Study contacts
- Principal investigator: Matthew Lee, MD — Ohio State University
- Study coordinator: Matthew Lee, MD
- Email: matthew.lee@osumc.edu
- Phone: 614-685-9181
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.