N/A
N=28
Percutaneous Deep Vein Arterialization Post-Market Study
Critical Limb Ischemia
Bottom Line
View on ClinicalTrials.gov: NCT03807661 ↗Enrolled (actual)
28
Serious AEs
92.9%
Results posted
Nov 2025
Primary outcome: Primary: Amputation-free Survival — 67.2 percentage of participants
Study Design & Population
- Study type
- Interventional
- Phase
- N/A
- Interventions
- Percutaneous deep vein arterialization (Procedure); LimFlow System (Device)
- Age
- Adult, Older Adult · 21+ yrs
- Sex
- All
- Sponsor
- LimFlow SA
- Primary completion
- Oct 2023
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Amputation-free Survival |
67.2 | — |
| SECONDARY Wound Healing |
12 | — |
| SECONDARY Primary and Secondary Patency |
31.7; 43.4 | — |
| SECONDARY Limb Salvage |
81.2 | — |
| SECONDARY Technical Success (Procedure Completion) |
27 | — |
| SECONDARY Procedural Success (Technical Success Without Death, Major Amputation, or Re-intervention) |
20 | — |
Summary
The objective of this post-market study is to evaluate the safety and effectiveness of the LimFlow System in creating a below-the-knee arterio-venous fistula for venous arterialization in subjects with critical limb ischemia.
Eligibility Criteria
Inclusion Criteria
- Subject must be > 21 and < 95 years of age
- Clinical diagnosis of symptomatic critical limb ischemia, defined as Rutherford category 5 or 6
- Assessment that no conventional surgical or endovascular treatment is possible
- Proximally, the target in-flow artery at the cross-over point must be treatable with a 3.5 - 4.0 mm stent after pre-treatment (by visual estimate), and be <50% stenosed
- Subject is willing and has adequate support to comply with protocol requirements, including medication regimen and follow-up visits
Exclusion Criteria
- Concomitant hepatic insufficiency, deep venous thrombus in target limb, uncorrected coagulation disorders, or current immunodeficiency disorder
- Prior vein stripping surgery and/or vessel harvesting for CABG in the limb intended for study
- Life expectancy less than 12 months
- Patient currently taking coumarin/warfarin which, in the opinion of the attending physician, interferes with the patient's treatment
- Any significant medical condition which, in the attending physician's opinion, may interfere with the patient's optimal treatment
- Patient currently participating in another investigational drug or device study that has not completed the primary endpoint or that clinically interferes with the endpoints of this treatment
- Patient unable to give consent
- Pregnant or breastfeeding women
- Documented myocardial infarction or stroke within previous 90 days
- Patients suffering from renal insufficiency (GFR value less than 30 ml/min/1.73 m²) who are not on hemodialysis
- Patients with vasculitis and/or untreated popliteal aneurysms
- Patients with acute limb ischemia
- Prior peripheral arterial bypass procedure above or below the knee which could inhibit proximal inflow to the stent graft
- Lower extremity venous disease with significant edema in the target limb that may inhibit the procedure and/or jeopardize wound healing, in the investigator's opinion
- Known or suspected systemic or severe infection (e.g., WIfI foot Infection grade of 3)
- Known or suspected allergies or contraindications to stainless steel, nickel, or contrast agent that cannot be adequately pre-treated, or patients who cannot receive anticoagulation or antiplatelet aggregation therapy
- Severe heart failure, which in the opinion of the investigator may compromise subject's ability to safely undergo a percutaneous procedure (e.g., known ejection fraction of < 40%, NYHA Classification III-IV)
Data sourced from ClinicalTrials.gov (NCT03807661). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.