New stent aims to keep leg arteries open longer
NCT ID NCT07122167
First seen Jun 25, 2026 · Last updated Jun 26, 2026 · Updated 1 time
Summary
This study is checking how safe and effective the ZENFLEX Pro drug-eluting stent is for people with peripheral artery disease (PAD) — narrowed or blocked arteries in the leg. About 153 adults with leg pain or sores will get the stent and be followed for a year. The main goal is to see if the artery stays open without needing another procedure.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- drug-eluting stent (coated with antiproliferative drug)
- What this could lead to
- If successful, this could confirm that the ZENFLEX Pro stent safely keeps leg arteries open longer, reducing the need for repeat procedures.
- What could go wrong
- This is an observational registry, not a randomized trial, so results may be less definitive. The stent may still fail to prevent re-narrowing in some patients.
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
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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 153 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jun 2025
- Expected to finish
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Feb 2027
An estimate. End dates often move.
- Lead sponsor
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A research network
The lead sponsor is a research network or cooperative group.
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 to 80 years
- 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.
Show the full entry requirements Hide 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) Aged 18 to 80 years, regardless of gender. (2) Chronic, symptomatic lower limb ischemia defined as Rutherford categories 2, 3, 4 or 5. (3) Subject (or legal guardian, if applicable) is willing and able to provide consent before to the performance of any study specific tests or procedures, has signed the consent form and agrees to attend all required follow-up visits. Angiographic Inclusion Criteria: Eligible subjects must meet all of the following angiographic criteria: 1. Stenotic, restenotic or occlusive lesion(s) located in the native superficial femoral artery (SFA) and/or proximal popliteal artery (PPA) (i.e., within the P1 segment): 1. Degree of stenosis ≥70% by visual angiographic assessment. 2. Vessel diameter ≥4.0 mm and ≤6.5 mm. 3. Total lesion length (or series of lesions) ≥ 10 mm and ≤ 140 mm (Note: Lesion segment(s) must be fully covered with one stent). 4. Chronic total occlusion with a total lesion length of ≤120 mm. 2. Patent popliteal and infrapopliteal arteries, with single-vessel runoff or better, defined as at least one of the three vessels remaining patent (i.e., \<50% stenosis) down to the ankle or foot. Exclusion Criteria: * Clinical exclusion criteria: Subjects will be excluded from the study if any of the following conditions are present: 1. Pregnant or breastfeeding women, or women/men planning to conceive. 2. Subjects who have had or are planned for major amputation (at or above the ankle level). 3. Subjects known to be allergic or intolerant to materials used in the investigational device or treatment drugs, including nitinol, paclitaxel, aspirin, clopidogrel, heparin, rivaroxaban, contrast agents, etc. 4. Subjects with serum creatinine ≥2.5 mg/dL or currently undergoing dialysis. 5. Subjects with known, uncorrectable hemorrhagic disorders or severe coagulation dysfunction (prothrombin time (PT) or activated partial thromboplastin time (aPTT) ≥2 times the upper limit of normal, or platelet count \<80×10⁹/L). 6. Previously stented target lesion/vessel. 7. Target lesion/vessel previously treated with drug-coated balloon \<12 months prior to enrollment. 8. Subjects with a life expectancy of less than 1 year. 9. Subjects who have received local or systemic thrombolysis treatment within 48 hours prior to enrollment. 10. Subjects diagnosed with major clinical diseases or unstable conditions within the past 3 months, such as severe heart failure, unstable angina, myocardial infarction, transient ischemic attack or stroke, severe neurological or psychiatric history, severe infections, gastrointestinal bleeding, or active disseminated intravascular coagulation. 11. Subjects currently participating in another clinical trial involving drugs or medical devices. 12. Subjects whom the investigator considers unsuitable for participation in the clinical trial. Angiographic exclusion criteria: 1. Presence of aneurysm in the target vessel. 2. Heavily calcified lesions (Peripheral Arterial Calcium Scoring System \[PACSS\] grades 3-4). 3. The target lesion requires the use of plaque excision, laser, or other debulking devices that may damage the vessel intima. 4. The guidewire cannot pass through the target lesion, or percutaneous transluminal angioplasty (PTA) balloon cannot be used for pre-dilation. 5. Acute ischemia and/or acute thrombosis of the SFA/PPA prior to enrollment.
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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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Cardiovascular
RECRUITINGChrzanów, Chrzanow, 32-500, Poland
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