Skip to main content
OpenTrials
Completed

NCT Number: NCT02400905

Evaluation of Safety and Effectiveness of the BioMimics 3D Stent System

To demonstrate that the BioMimics 3D Stent System meets the performance goals defined by VIVA Physicians, Inc. for the safety and effectiveness of Nitinol stents used in the treatment of symptomatic disease of the femoropopliteal artery. It is a prospective, single-arm, multicenter clinical trial.

Completed

Looking for future studies?

Notify Me

Key information

Age range

19 year–85 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Karolinen-Hospital, Arnsberg, Germany

Loading trial locations.

About this study

The BioMimics 3D stent is intended to improve luminal diameter in the treatment of symptomatic de-novo, obstructive or occlusive lesions in native femoropopliteal arteries with reference vessel diameters ranging from 4.0 - 6.0 mm. Subjects with symptomatic atherosclerotic disease of the femoropopliteal artery who comply with all study eligibility criteria may be considered for enrollment.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Symptomatic peripheral arterial disease (PAD) of the lower extremities requiring intervention to relieve de novo obstruction or occlusion of the native femoropopliteal artery.
  • PAD classified as Rutherford clinical category 2, 3 or 4.
  • Resting ankle-brachial index (ABI) of ≤0.90 (or ≤0.75 after exercise of the target limb) or angiographic or DUS evidence of >/= 60%.
  • Single or multiple stenotic or occlusive lesions within the native femoropopliteal artery ("target lesions") that can be crossed with a guidewire and fully dilated.
  • Single or multiple target lesions must be covered by a single stent or two overlapping stents.
  • Target lesion(s) eligible for treatment at least 1 cm distal to the origin of the deep femoral artery and at least 3 cm above the bottom of the femur.
  • Target lesion(s) reference vessel diameter is between 4.0 mm and 6.0 mm.
  • Single or multiple target lesions measure ≥40 mm to ≤140 mm in overall length, with ≥60% diameter stenosis by operator's visual estimate.
  • Patent popliteal artery (no stenosis ≥50%) distal to the treated segment.
  • At least one patent infrapopliteal vessel (<50% stenosis) with run-off to the ankle.

Exclusion criteria

  • Iliac stent in target limb that has required re-intervention within 12 months prior to index.
  • Target vessel that has been treated with bypass surgery.
  • PAD classified as Rutherford clinical category 0, 1, 5 or 6.
  • Known coagulopathy or has bleeding diatheses, thrombocytopenia with platelet count less than 100,000/microliter or INR >1.8.
  • Stroke diagnosis within 3 months prior to enrollment.
  • History of unstable angina or myocardial infarction within 60 days prior to enrollment.
  • Thrombolysis within 72 hours prior to the index procedure.
  • Acute or chronic renal disease (e.g., as measured by a serum creatinine of >2.5 mg/dL or >220 umol/L), or on peritoneal or hemodialysis.
  • Significant disease or obstruction (≥50%) of the inflow tract that has not been successfully treated at the time of the index procedure (success measured as ≤30% residual stenosis, without complication).
  • No patent (≥50% stenosis) outflow vessel providing run-off to the ankle.
  • Target lesion(s) requires percutaneous interventional treatment, beyond standard balloon angioplasty alone, prior to placement of the study stent.

Treatment and study plan

BioMimics 3D Vascular Stent System

Device

Femoropopliteal stenting

Primary outcomes

  1. Primary Safety Endpoint (Freedom From a Composite of Major Adverse Events (MAE)

    Time frame: 30 days

    Freedom from a composite of major adverse events (MAE) comprising death, any major amputation performed on the target limb or clinically-driven target lesion revascularization (TLR) through 30 days.

  2. Primary Effectiveness Endpoint (Primary Stent Patency Rate)

    Time frame: 12 months

    The primary effectiveness endpoint of the MIMICS-2 Study was defined as the primary stent patency rate at 12 months. Patency was defined as no significant reduction in luminal diameter (< 50% diameter stenosis) since the index procedure. Loss of patency was determined by an independent core laboratory when the peak systolic velocity ratio (PSVR) exceeds 2.0, or where angiography revealed > 50% diameter stenosis, or where the subject had a CDTLR.

Secondary outcomes

  1. Secondary Safety (Overall MAE Rate at 30 Days)

    Time frame: 30 Days

    Contribution of individual MAE rates for death, major amputation performed on the target limb and clinically-driven target lesion revascularization to the overall MAE rate at 30 days.

  2. Long Term Safety (Overall MAE Rate at Month 12)

    Time frame: 12 months

    Overall MAE rate at Month 12 and contribution of individual event rates to the overall MAE.

  3. Number of Participants With Serious Adverse Events

    Time frame: 36 Months

    Overall rate and incidence of type of serious adverse events from Day 0 through completion of Study follow-up at Month 36.

  4. Technical Success

    Time frame: Procedural (at end of index procedure)

    Percentage of subjects in which a final result of ≤50% residual diameter stenosis (in-stent) was achieved at index procedure

  5. Primary Stent Patency

    Time frame: Months 12 & 24

    Determined at Months-12 and 24 using values of: PSVR >2.0, >2.4; >2.5; and >3.5, each to indicate loss of patency on duplex ultrasound or where angiography reveals >50% diameter stenosis or where the subject undergoes clinically-driven TLR.

    Further analysis of the patency data purely using a reference PSVR of >2.4, >2.5 and >3.5 was not feasible from the data that was collected.

  6. Number of Participants With Improvement of Rutherford Clinical Category by 1 or More

    Time frame: Baseline, Day 30, Months 12 & 24

    Comparison of Rutherford Clinical Category measured at Baseline, Day 30, Months 12 and 24.

    Categories 0 - Asymptomatic

    • - Mild claudication
    • - Moderate claudication
    • - Severe claudication
    • - Ischemic rest pain
    • - Minor tissue loss
    • - Major tissue loss
  7. Clinical Outcome (Six-Minute Walk Test)

    Time frame: Baseline, Day 30, Months 12 & 24

    Comparison of measured at Baseline, Day 30, Months 12 and 24 (subgroup of US investigational sites only).

  8. Functional Outcome (Ankle Brachial Index (ABI) Measurement)

    Time frame: Baseline, Day 30, Months 12 & 24

    Comparison of the ankle brachial index (ABI) measurement at Baseline, within 30 days after index procedure, then at Months 12 and 24.

  9. Change of Walking Impairment Questionnaire Score

    Time frame: Baseline, Day 30, Months 12 & 24

    Comparison of the Walking Impairment Questionnaire at Baseline, within 30 days after index procedure, then at Months 12 and 24.

    The WIQ consists of 3 primary categories assessing walking distance, stair-climbing, and walking speed, as previously described. Individuals are asked to rate the degree of difficulty of various activities with responses ranging from 0 (unable) to 4 (none).

  10. Number of Participants With Freedom From Stent Fracture

    Time frame: Months 12, 24 & 36

    Stent integrity measured as freedom from fracture, defined as clear interruption of a stent strut observed in a minimum of two projections, determined by core lab examination of X-rays taken with the leg in extension at 12, 24 and 36 Months.

Sponsors and collaborators

Lead sponsor

Veryan Medical Ltd.

Industry

Collaborators

  • ClinLogix. LLC
  • Massachusetts General Hospital
  • Yale Cardiovascular Research Group

Registry information

Official study title

MIMICS-2: Evaluation of Safety and Effectiveness of the BioMimics 3D Stent System in the Femoropopliteal Arteries of Patients With Symptomatic Peripheral Arterial Disease

Acronym: MIMICS-2

Important dates

Study start
2015
Primary completion
2017
Study completion
2019
First posted
Mar 27, 2015
Registry last updated
Jun 4, 2021

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.