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FANS vs CVAC for Medium to Large Stones

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

Who can join

Ages 18 and older · All sexes

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

About the study

Improvements in ureteroscopes have led to improved stone free rates. Two new devices (FANS - Flexible and Navigable Suction) and the CVAC ureteroscope have never been compared head to head. This trial will compare these two new suction ureteroscope technologies against each other

What is being tested

• ureteroscopy (device)
• CVAC (device)

Sponsor: Ohio State University · Participants: 159 · Started: Jul 1, 2026

Contact the study team

• Matthew Lee, MD · Phone: 614-685-9181

Official record on ClinicalTrials.gov — NCT07514351

Locations in the U.S.

Conditions

• Kidney Stones

From ClinicalTrials.gov, data retrieved Nov 15, 2026. Each study sets its own eligibility; the study team decides who can join.