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Which stent hurts less? new study aims to ease kidney stone recovery

NCT ID NCT05026710

Symptom relief Sponsor: University of Michigan Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looked at 224 adults with kidney or ureter stones who needed a stent after surgery. Half got a silicone stent, half got a standard plastic stent. The goal was to see which type caused less pain and interference with daily life in the days and weeks after surgery.

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

224 people

The number who actually took part.

Started

Dec 2021

Finished

Aug 2024

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 years and older

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: * Stated willingness to comply with all study procedures and availability for the duration of the study * Diagnosed with unilateral renal and/or ureteral stones with the largest less than or equal to (≤)2.0 cm in size measured on abdominal x-ray, Ultrasound or computerized tomography (CT) scan * Renal stone defined as only renal location of stone(s). * Ureteral stone defined as ureteral only or ureteral and renal stone(s). * Planned unilateral ureteroscopy with stent placement without stent string. * Ability to take oral medication. * Ability and willingness to complete and adhere to survey questions and responses throughout study duration. Exclusion Criteria: * Known planned secondary or staged procedure * Presence of anatomical anomalies (for example (e.g.) solitary, horseshoe, fused crossed ectopia, pelvic kidney) * Presence of any prior urinary diversion (e.g. ileal conduit, orthotopic neobladder) * Presence of any indwelling ureteral stent prior to ureteroscopy * Presence of any indwelling nephrostomy tube prior to ureteroscopy * Ancillary ureteroscopy to treat residual fragments after percutaneous renal stone surgery * Renal stone located in calyceal diverticulum * No indication for stent placement (e.g. spontaneous passage) * Bladder stone location. * Pregnancy or lactation * Known allergic reactions to polyurethane or silicone

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Conditions

The condition(s) this trial relates to.

nephrolithiasis ureterolithiasis

As listed by the trial registrant

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

Renal stone Ureteral stone

Contacts and locations

Locations

  • Ascension Hospital (Comprehensive Urology)

    Novi, Michigan, 48374, United States

  • Chelsea Hospital (Saint Joseph Mercy)

    Chelsea, Michigan, 48118, United States

  • Henry Ford Hospital

    Detroit, Michigan, 48202, United States

  • Henry Ford Macomb Hospital

    Clinton Township, Michigan, 48038, United States

  • Henry Ford West Bloomfield Hospital

    West Bloomfield, Michigan, 48322, United States

  • Integrated Healthcare Association (IHA) (Saint Joseph Mercy Hospital)

    Ypsilanti, Michigan, 48197, United States

  • Michigan Medicine

    Ann Arbor, Michigan, 48109, United States

  • Michigan Medicine

    Brighton, Michigan, 48116, United States

  • William Beaumont Hospital (Michigan Institute of Urology)

    Royal Oak, Michigan, 48073, United States

  • William Beaumont Hospital (Michigan Institute of Urology)

    Troy, Michigan, 48085, United States

More trials for these conditions

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