New kidney stone tool may spare kidney tissue
NCT ID NCT07615452
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study will compare two types of tubes (ureteral access sheaths) used during kidney stone surgery to see if one causes less kidney damage. Sixty adults with kidney stones will be randomly assigned to get either the standard tube or a new aspiration-assisted tube. Doctors will use a special ultrasound technique called shear-wave elastography to measure kidney stiffness before surgery, one day after, and seven days after, which can indicate tissue damage.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Aspiration-assisted ureteral access sheath versus standard ureteral access sheath
- What this could lead to
- If successful, this could help surgeons choose a safer device for kidney stone surgery, potentially reducing kidney damage.
- What could go wrong
- This is a small, early-stage study (60 participants) that only measures short-term changes. It may not show clear differences or apply to all patients.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 60 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Jun 2026
An estimate. Start dates often move.
- Expected to finish
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Nov 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age ≥18 years * Patients undergoing RIRS for renal stones * Stone size between \< 20 mm * Negative urine culture Exclusion Criteria: * Active urinary tract infection * Congenital renal anomalies * Solitary kidney * Chronic kidney disease * Previous PCNL or open surgery * Ureteral stricture disease
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
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Other studies related to the condition(s) this trial covers.
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