Stone clearance with steerable ureteroscopic evacuation compared with other methods
Official title: Evaluating the Safety and Effectiveness of Steerable Ureteroscopic Renal Evacuation (SURE) With the CVAC® System Compared to Other Therapeutic Interventions for the Treatment of Renal Stones: a Prospective, Observational Trial
Run by Calyxo, Inc. · NCT07155005 · Data updated 2026-11-12
This study tests whether the CVAC/SURE approach helps clear kidney stones more effectively than standard renal-stone interventions in patients needing ureteroscopy or PCNL.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 1000 (estimated) |
| Sponsor | Calyxo, Inc. Industry-sponsored |
| Locations | 10 sites (Miami, Florida and 9 other locations) |
| Status | Recruiting |
| Started | October 12, 2026 |
| Main results expected | December 2028 |
| Study ends | December 2029 |
| Registry record updated | November 2, 2026 |
| Trial ID | NCT07155005 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults requiring ureteroscopy with laser lithotripsy or PCNL for renal stones who can complete follow-up and provide consent at participating sites.
✕Probably not a fit
Patients with active infection, significant comorbidities, pregnancy, or anatomical abnormalities may not benefit from this approach.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This observational study will prospectively accumulate data from up to 25 sites and up to 250 participants to compare the performance and safety of the CVAC System with SURE and other renal-stone techniques. Patients undergoing ureteroscopy with laser lithotripsy or PCNL may be enrolled and followed per protocol. The study includes multiple wearable and surgical approaches such as CVAC, FANS in flexible ureteroscopy, and direct in-scope suction, as well as traditional ureteroscopy without suction and PCNL to evaluate real-world outcomes. Eligibility requires candidacy for ureteroscopy or PCNL, ability to follow up, and informed consent; exclusion includes active infection, history of sepsis, significant comorbidities, and certain anatomical abnormalities. Lead sponsor is Calyxo, Inc., with sites at University of Miami, Wichita Urology Group, and University at Buffalo.
Why it matters
Potential benefit: If successful, the approach could offer safer or more effective stone clearance options and inform future practice patterns for renal stone management.
How similar studies have gone: Prior real-world and observational work has explored steerable and suction-assisted ureteroscopy, indicating potential benefits but with heterogeneous results; this study aims to provide more standardized prospective data.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Candidate for ureteroscopy with laser lithotripsy or PCNL for the treatment of renal stones * Be willing and able to return for and respond to all study-related follow up procedures * Have been informed of the nature of the study and has provided informed consent using the IRB approved informed consent (ICF) Exclusion Criteria: * Untreated urinary tract infection at the time of the index procedure * Visual evidence of infection at the time of the index procedure * History of sepsis * Significant comorbidities * Bladder, ureteral or kidney abnormalities * Pregnant individuals * Unable to meet the treatment and follow up protocol requirements
Where it's running
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University of Miami
Miami, Florida, United States Recruiting -
Wichita Urology Group
Wichita, Kansas, United States Recruiting -
University of Buffalo
Cheektowaga, New York, United States Recruiting -
Integrated Medical Professionals (IMP)
New York, New York, United States Recruiting -
Northwell Health
New York, New York, United States Recruiting -
Urology Specialists of the Carolinas (USOC)
Charlotte, North Carolina, United States Recruiting
Show 4 more locations
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The Urology Group
Cincinnati, Ohio, United States Recruiting -
Urology Specialists of South Dakota
Sioux Falls, South Dakota, United States Recruiting -
Urology Partners of North Texas
Arlington, Texas, United States Recruiting -
UT Southwestern Medical Center
Dallas, Texas, United States Recruiting
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Steerable Ureteroscopic Renal Evacuation (SURE) with CVAC vs standard ureteroscopy
This trial tests whether the SURE system with CVAC can improve outcomes compared with standard ureteroscopy with laser lithotripsy for kidney stones in adult patients.
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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.
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Comparing robotic and manual methods for treating kidney stones
This study is testing whether a robotic system works better than traditional manual methods for treating kidney stones to see which approach is safer and more effective for adults.
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Investigating oxalate production in patients with calcium oxalate kidney stones
This study is testing if people with calcium oxalate kidney stones produce more oxalate in their bodies than healthy individuals by following a special diet and taking certain supplements.
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Acupressure to Ease Pain During ESWL for Kidney Stones
This study tests whether applying acupressure to specific points before ESWL can reduce pain and improve comfort for adults with kidney or proximal ureteral stones.
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Audio consent with human voice or AI-voice added to written consent for ureteroscopy
This study tests if listening to an audio version of the consent form, read by a real urologist or by an AI-cloned voice, helps adults in Turkey understand their ureteroscopy or RIRS consent better than the written form alone.
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.