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Tiny tubes, big difference: study seeks best stent for stone patients

NCT ID NCT06083051

Symptom relief Sponsor: University of Wisconsin, Madison Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study compares four different ureteral stents (small tubes placed in the ureter) to find which one causes the fewest symptoms after laser surgery for kidney stones. About 272 adults who need a stent after stone removal will be randomly assigned to one of four stent types. Researchers will track symptoms like pain, urinary issues, and quality of life for up to 10 weeks to see which stent is most comfortable.

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

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

About 272 people

The number the study aims to enrol. It can still change while the study runs.

Started

Mar 2024

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

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

18 to 89 years

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Patients with renal or ureteral urinary stones who require endoscopic treatment and stent placement in the outpatient operating room. Exclusion Criteria: * Pregnant patients * Patients with transplant kidneys * Patients with irreversible coagulopathy * Patients with known ureteral stricture disease * Non-English speaking, vulnerable patients such as lacking of decision-making capability, prisoner, adult unable to consent, will not be enrolled. * Patients with planned staged procedures. * Patients who have stent placed before surgery.

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Conditions

The condition(s) this trial relates to.

Urinary Calculi urolithiasis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Urinary stone

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • University of Wisconsin School of Medicine and Public Health

    RECRUITING

    Madison, Wisconsin, 53792, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.