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New stent aims to keep leg arteries open longer

NCT ID NCT04546477

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 09, 2026 · Last updated Jul 10, 2026 · Updated 1 time

Summary

This trial is testing a new stent called Renzan to treat blockages in the leg arteries (superficial femoral or popliteal arteries). The study includes about 135 people with moderate to severe peripheral artery disease. Researchers want to see if the stent is safe and effective at keeping the artery open for at least a year, preventing the need for repeat procedures or amputation.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Renzan peripheral stent system
What this could lead to
If successful, this stent could offer a reliable option to restore blood flow in blocked leg arteries, reducing pain and the need for repeat procedures.
What could go wrong
This is a single-arm study without a comparison group, so results may not prove superiority over existing stents. Risks include re-blockage, blood clots, or need for additional 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

135 people

The number who actually took part.

Started

Jul 2020

Finished

Jun 2026

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

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: 1. Age ≥18 years. 2. Subject must provide written informed consent prior to the treatment of the target lesion. 3. Subject must be willing to comply with the specified follow-up evaluation schedule. 4. Subject with Rutherford-Becker clinical classification category 2 to 5, with a resting ankle-brachial index (ABI) ≤ 0.9. 5. A superficial femoral and/or popliteal artery lesion with \> 50% stenosis or total occlusion. 6. Stenotic or occluded lesion(s) within the same vessel (one long or multiple serial lesions treatable with one stent) ≥ 40 mm and ≤ 140 mm in length, with reference vessel diameter (RVD) ≥ 4.0 mm and ≤ 7.0 mm by visual assessment. 7. A patent inflow artery free from significant lesion (≥50% stenosis) as confirmed by angiography (treatment of target lesion acceptable after successful treatment of ipsilateral iliac lesions); Successful ipsilateral iliac artery treatment is defined as attainment of residual diameter stenosis ≤30% without death or major vascular complication, either with PTA or stenting. 8. The target lesion(s) can be successfully crossed with a guide wire and dilated up to 1:1 to healthy vessel (as per operator's assesment). 9. At least one patent native outflow artery (anterior or posterior tibial or peroneal) to the foot, free from significant (≥50%) stenosis (as confirmed by angiography), that has not previously been revascularized. The remaining outflow arteries requiring treatment during the same procedure may be treated only with uncoated devices and before the target lesion. 10. A subject with bilateral obstructive SFA disease is eligible for enrollment into the study. If a subject with bilateral disease is enrolled, the target limb will be selected at the Investigator's discretion, who may use the criteria of lesion length, percent stenosis, and/or calcification content. The contra-lateral procedure should not be done until at least 30 days after the index procedure; however, if contralateral treatment is performed prior to treatment of the target lesion it should be performed at least 1 day before the index procedure with uncoated devices only. 11. The subject is eligible for surgical repair, if necessary. Exclusion Criteria: 1. Subject has Rutherford-Becker classification category 6. 2. Treatment of lesions requiring the use of adjunctive debulking devices. 3. The use of drug-coated balloons at any step of the procedure. 4. Required stent placement via a popliteal approach. 5. Required stent placement across or within 0.5 cm of the superficial and profunda femoral artery bifurcation. 6. In-stent restenosis treatment or any other procedure which requires stent-in-stent placement to obtain patency. 7. Restenotic lesion that had previously been treated by atherectomy, laser or cryoplasty within 3 months of the index procedure. 8. Lesion with the length that would require stent overlap. 9. Required stent placement within 1 cm of a previously deployed stent. 10. Any significant vessel tortuosity or other parameters prohibiting access to the lesion and/or preventing the stent delivery. 11. Subject with coronary intervention performed less than 90 days prior to or planned within 30 days after the treatment of the target lesion. 12. Known allergies or intolerance to nitinol (nickel titanium), or contrast agent. 13. Any contraindication or known unresponsiveness to dual antiplatelet therapy (DAPT) or anticoagulation therapy. 14. Presence of acute thrombus prior to crossing the lesion. 15. Thrombolysis of the target vessel within 72 hours prior to the index procedure, where complete resolution of the thrombus was not achieved. 16. Thrombophlebitis or deep venous thrombus, within the previous 30 days. 17. Subject receiving dialysis within the previous 30 days. 18. Stroke within the previous 90 days. 19. Known or suspected active infection at the time of the procedure. 20. Subject is pregnant or of child bearing potential 21. Subject has life expectancy of less than 1 year. 22. Subject is participating in an investigational study that has not reached primary endpoint at the time of study screening. 23. Treatment of outflow arteries (anterior or posterior tibial or peroneal) following target lesion treatment (unless bailout). 24. In France: Vulnerable patients, patients deprived from liberty and patients with a physical or mental state altered by disease, age or disability which impacts their ability to defend their interests and for which protection measures are taken ("protected majors" as per French law: articles L1121-5, 6, 8 et L1122-1-3, du code de la santé publique)

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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.

Contacts and locations

Locations

  • AZ Sint-Blasius

    Dendermonde, Oost-Vlaanderen, 9200, Belgium

  • CCB MVZ Frankfurt und Main-Taunus GbR

    Frankfurt, 60389, Germany

  • Clinique Rhône-Durance

    Avignon, 84000, France

  • Clinique Saint Jean - Sud de France

    Saint-Jean-de-Védas, 34433, France

  • Diakonessenhuis

    Utrecht, 3582, Netherlands

  • Elblandklinikum Radebeul

    Radebeul, Germany

  • Hospital Germans Trias i Pujol

    Badalona, 08916, Spain

  • Hospital Universitario Cruces

    Bilbao, 48903, Spain

  • Hôpital Paris Saint-Joseph

    Paris, 75014, France

  • Imelda ziekenhuis

    Bonheiden, 2820, Belgium

  • Klinikum Hochsauerland Karolinen-Hospital Hüsten

    Arnsberg, 59759, Germany

  • Onze Lieve Vrouw (OLV) Ziekenhuis

    Aalst, 9300, Belgium

  • Ziekenhuis Oost Limburg

    Genk, 3600, Belgium

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