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New stent aims to ease chronic ureter blockages

NCT ID NCT00790686

Disease control Sponsor: University Hospital, Bordeaux 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tested a special stent called MEMOKATH 051 in 13 adults with long-term ureter blockages who usually need a standard double J stent. The goal was to see how long the new stent lasts and how well it is tolerated over 3 years. Participants had the new stent placed during a short procedure and were followed with exams and imaging. If problems occurred, the stent was changed back to the standard type.

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

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

13 people

The number who actually took part.

Start date

Nov 2008

Finished

May 2013

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: * Age 18-year-old or superior * Chronic stenosis of the ureter treated by placement of a ureteral endoprosthesis for more than six months; * No possibility for surgical or endoscopic treatment of the ureteral stricture * Free Consent, dated and signed by the patient * Affiliated Subject of a regime of French national health and pensions organization. Exclusion Criteria: * Age under 18 year old * Pregnant or nursing Women * Patient having a life expectancy of less than 1 year * Patient having unique kidney * Patient having severe renal insufficiency (creatinin clearance under 30 ml/min) * Possible surgical or endoscopic treatment of ureteral stricture * Repeated urinary tract stones * Urothelial tumor of the bladder * Retro peritoneal fibrosis in the course of evolution * Complications of double J stents requiring more thanks a lot every 6 months * Against anaesthetic indication * Lithiasic inlay probe Double J with obstruction within 6 months * Persons put under maintenance of justice * Persons in inability to understand the sequence of try

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Conditions

The condition(s) this trial relates to.

stricture or kinking of ureter ureteral obstruction

As listed by the trial registrant

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

Ureteral obstruction

Contacts and locations

Locations

  • Department of Urology, Hospices Civils de Lyon

    Lyon, 69437, France

  • Department of Urology, University Hospital, Bordeaux

    Bordeaux, 22076, France

  • Department of Urology, University Hospital, Limoges

    Limoges, 87042, France

  • Department of Urology, University Hospital, Toulouse

    Toulouse, 31059, France

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