New stent aims to ease pain and improve life for kidney stone sufferers
NCT ID NCT07275879
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests a modified double-J ureteral stent with a thinner loop at the bladder end, designed to reduce common side effects like pain, blood in urine, and discomfort. About 40 adults with kidney or ureteral stones will receive either the new stent or a standard one. Researchers will measure quality of life and urine reflux to see if the new design offers better comfort.
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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 40 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Dec 2025
An estimate. Start dates often move.
- Expected to finish
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Apr 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Patients aged 18 years and older * Patients with kidney stones * Patients with ureteral stones Exclusion Criteria: * Congenital anomalies of the urinary tract * Urinary tract infections * Upper urinary tract obstruction * Complicated ureteroscopy (e.g., ureteral perforation) * Pregnancy * Pre-stented patients
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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 places running it
1 site. The list below names each one and where it is.
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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.
Contacts and locations
Locations
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St. Luke's Clinical Hospital
RECRUITINGSaint Petersburg, Outside U.S./Canada, Russia
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