Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Outcomes and costs with the HugeMed 6.3 Fr flexible ureteroscope

Official title: Surgical Outcomes and Costs in Using the Shenzhen HugeMed 6.3 French Flexible Ureteroscope

Run by University of Kansas Medical Center · NCT07296835 · Data updated 2026-11-12

This trial will test whether the HugeMed 6.3 Fr flexible ureteroscope gives similar stone-free results while lowering costs compared with traditional flexible ureteroscopes in adults having RIRS for stones up to 2.5 cm.

More Kidney Stones trials

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment75 (estimated)
SponsorUniversity of Kansas Medical Center
Academic / other
Locations1 site (Kansas City, Kansas)
StatusRecruiting
StartedMay 1, 2026
Main results expectedNovember 2026
Study endsNovember 2028
Registry record updatedMay 6, 2026
Trial IDNCT07296835 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (≥18 years) scheduled for primary flexible ureteroscopy/RIRS for kidney or ureteral stones with total stone burden ≤ 2.5 cm and who meet standard surgical eligibility are ideal candidates.

Probably not a fit

Patients needing bilateral treatment in the same procedure, those with complex genitourinary anatomy, urinary diversions, uncorrected bleeding disorders, pregnancy, immunosuppression, or urgent/emergency cases are unlikely to be eligible or to gain benefit from this comparison.

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

What this trial studies

This single-center interventional comparison will enroll adults undergoing primary flexible ureteroscopy (retrograde intrarenal surgery) for kidney or ureteral stones with total stone burden ≤ 2.5 cm. Participants will undergo RIRS with either the HugeMed HU30M 6.3 Fr flexible ureteroscope or the institution's traditionally used flexible ureteroscopes, and outcomes including stone-free rate, operative metrics, complications, and device-related costs will be collected. Key exclusions include bilateral procedures during the same operation, genitourinary anatomical abnormalities, uncorrected coagulopathy, urinary diversions, chronic external catheters, pregnancy, immunosuppression, and non-elective cases. The investigators hypothesize that the HU30M will provide comparable stone clearance with potential cost savings and similar safety in this U.S. patient population.

Why it matters

Potential benefit: If successful, patients could get comparable stone clearance with lower procedural costs and potentially less device-related trauma.

How similar studies have gone: Prior reports of smaller-caliber flexible ureteroscopes have shown comparable stone-free rates and reduced ureteral trauma, but direct cost-focused comparisons in U.S. populations are limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Males or females ≥ 18 years of age
* Patients with ureteral or kidney stones undergoing primary flexible ureteroscopy for retrograde intrarenal surgery
* Total stone burden ≤ 2.5 cm

Exclusion Criteria:

* Undergoing bilateral stone treatment during the same procedure
* Patients with known genitourinary anatomical abnormalities that would complicate the procedure as determined by the treating investigator
* Uncorrected coagulopathy
* Patients with urinary diversions
* Chronic external urinary catheters
* Women who are pregnant
* Immunosuppressed patients
* Non-elective procedures
* Participants must not be involved in any other clinical research studies during the duration of this trial. Exceptions may be made if the investigator determines, on a case-by-case basis, that participation in another study will not adversely affect the outcomes or integrity of this trial

Where it's running

  • University Of Kansas Medical Center
    Kansas City, Kansas, United States
    Recruiting

Study contacts

  • Principal investigator: Wilson R. Molina, MD — University of Kansas Medical Center
  • Study coordinator: Wilson R. Molina, MD
  • Email: wmolina@kumc.edu
  • Phone: 913-588-8721

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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.