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.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 75 (estimated) |
| Sponsor | University of Kansas Medical Center Academic / other |
| Locations | 1 site (Kansas City, Kansas) |
| Status | Recruiting |
| Started | May 1, 2026 |
| Main results expected | November 2026 |
| Study ends | November 2028 |
| Registry record updated | May 6, 2026 |
| Trial ID | NCT07296835 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
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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
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Modified Mini-PCNL vs Standard PCNL for Complex Kidney Stones
This study tests whether a smaller 20 Fr access in modified mini-PCNL can match the stone-clearing success of the standard 24 Fr PCNL in adults with complex kidney stones.
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Aspirating vs non-aspirating ureteral access sheath in RIRS for kidney stones
This trial tests whether using an aspirating ureteral access sheath during retrograde intrarenal surgery improves stone clearance and reduces complications compared with a non-aspirating sheath in adults with small kidney stones.
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Suction to collapse the kidney's collecting system after RIRS (retrograde intrarenal surgery)
This trial will test whether actively suctioning the kidney's collecting system at the end of RIRS reduces early postoperative pain and infections for adults having kidney stone removal.
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Compare two suction ureteroscope devices for kidney stones (FANS vs CVAC)
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.
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Negative-pressure suction during flexible ureteroscopy to reduce fluid absorption and infections
This test will see if using a negative-pressure suction sheath during retrograde intrarenal surgery for adults with kidney stones reduces how much irrigation fluid their bodies absorb and lowers the risk of postoperative infections.
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MODULITH SLX-F2 shockwave treatment with StorM-Track versus standard targeting for kidney stones
This will test if using StorM-Track real-time stone tracking with the MODULITH SLX-F2 shockwave machine helps adults with 6–15 mm kidney stones become stone-free more often than standard shockwave treatment.
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.