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CompletedNCT01412450DUR-POPUpdated Oct 1, 2013

Efficacity Study With the Protégé EverFlex Stent in Popliteal Lesions

A Phase 4 interventional study of nitinol stent in Peripheral Arterial Disease, sponsored by Flanders Medical Research Program. Completed at 4 sites in Belgium. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2013-10-01.

Sponsored by Flanders Medical Research Program · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
60
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

This study will assess the results up to 12 months with the Protégé EverFlex stent (ev3) in patients presenting with a narrowing or blocking at the level of the knee artery, which leads to a limited walking distance, rest pain or non-healing ulcers.

02

Conditions studied

  • Peripheral Arterial Disease

Keywords

  • symptomatic popliteal artery stenosis or occlusion
03

In context

Peripheral Arterial Disease

1,542 studies on the registry are indexed under Peripheral Arterial Disease; 282 are open to participants now.

This study's enrollment of 60 is below the median of 74 across 1,066 interventional studies indexed under Peripheral Arterial Disease.

Browse Peripheral Arterial Disease studies →

Lead sponsor

Flanders Medical Research Program is the lead sponsor of 24 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

General Inclusion criteria

  • De novo, restenotic or reoccluded lesion located in the popliteal artery, with or without superficial femoral artery involvement
  • Patient presenting a score from 2 to 5 following Rutherford classification
  • Patient is willing to comply with specified follow-up evaluations at the specified times
  • Patient is >18 years old
  • Patient (or their legal representative) understands the nature of the procedure and provides written informed consent, prior to enrolment in the study
  • Prior to enrollment, the guidewire has crossed target lesion
  • Patient is eligible for treatment with the self-expanding nitinol EverFlex (ev3) stent

Angiographic Inclusion Criteria

  • The target lesion has angiographic evidence of stenosis or restenosis > 50% or occlusion which can be passed with standard guidewire manipulation
  • The target lesion, visually estimated, has a maximal length of 14 cm and can be categorized as either a type A or B lesions according the TASC II guidelines
  • Target vessel diameter visually estimated is >3.5mm and \<7.5 mm
  • There is angiographic evidence of at least one-vessel-runoff to the foot

Exclusion criteria

Exclusion Criteria:

  • Presence of another stent in the target vessel that was placed during a previous procedure
  • Presence of an aortic thrombosis or significant common femoral ipsilateral stenosis
  • Previous by-pass surgery in the same limb
  • Patients for whom antiplatelet therapy, anticoagulants or thrombolytic drugs are contraindicated
  • Patients who exhibit persistent acute intraluminal thrombus of the proposed lesion site
  • Perforation at the angioplasty site evidenced by extravasation of contrast medium
  • Patients with known hypersensitivity to nickel-titanium
  • Patients with uncorrected bleeding disorders
  • Aneurysm located at the level of the SFA and/or popliteal artery
  • Female patient with child bearing potential not taking adequate contraceptives or currently breastfeeding
  • Life expectancy of less than twelve months
  • Ipsilateral iliac treatment before the target lesion procedure with a residual stenosis > 30% or ipsilateral iliac treatment conducted after the target lesion procedure
  • Use of thrombectomy, artherectomy or laser devices during procedure
  • Any patient considered to be hemodynamically unstable at onset of procedure
  • Patient is currently participating in another investigational drug or device study that has not completed the entire follow up period.
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
60 participants (actual)

Study arms

  • Experimental
    nitinol stent

    Protégé EverFlex stent

    Device: nitinol stent

Interventions

  • Devicenitinol stent

    implantation of one Protégé EverFlex stent

    Also known as: Protégé EverFlex stent

06

What researchers measure

Primary outcomes

  1. primary patency

    primary patency at 12 months, defined as a target lesion without a hemodynamically significant stenosis on duplex ultrasound (systolic velocity ratio no greater than 2.4) and without TLR within 12 months

    Time frame: 12 months post-procedure

Secondary outcomes

  1. Technical success

    Technical success, defined as the ability to cross and dilate the lesion to achieve residual angiographic stenosis no greater than 30% and residual stenosis less than 50% by duplex imaging

    Time frame: 1 day post-procedure

  2. Primary patency rate at 6-, 12-month follow-up.

    Patients that present without a hemodynamically significant stenosis at the target area on duplex ultrasound (systolic velocity ratio no greater than 2.4) and without prior TLR are defined as being primary patent.

    Time frame: 6-, 12-month follow-up

  3. Clinical success

    Clinical success at follow-up is defined as an improvement of Rutherford classification at 6-, 12-month follow-up of one class or more as compared to the pre-procedure Rutherford classification.

    Time frame: 6-, 12-month follow-up

  4. tent fracture rate at 12-month follow-up

    Determined according the following classification on x-ray: Class 0 (no strut factures); Class I (single tine fracture); Class II (multiple tine factures); Class III (Stent fracture(s) with preserved alignment of the components); Class IV (Stent fracture(s) with mal-alignment of the components); Class V (Stent fracture(s) in a trans-axial spiral configuration)

    Time frame: 12-month follow-up

  5. Serious adverse events

    Defined as any clinical event that is fatal, life-threatening, or judged to be severe by the investigator; resulted in persistent or significant disability; necessitated surgical or percutaneous intervention; or required prolonged hospitalization.

    Time frame: 1 year

07

Study locations

4 sites
  • Imeldaziekenhuis
    Bonheiden, Antwerp 2820, Belgium
  • University Hospital Antwerp
    Edegem, Antwerp 2650, Belgium
  • A.Z. Sint-Blasius
    Dendermonde, East-Flanders 9200, Belgium
  • Heilig-Hart Ziekenhuis
    Tienen, Flemish Brabant 3300, Belgium
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 1, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01412450
Lead sponsor
Flanders Medical Research Program
Responsible party
Sponsor
First posted
Aug 9, 2011
Start date
Jul 2010
Primary completion
Aug 2012
Completion
Aug 2012
Last update
Oct 1, 2013

Study contacts

Marc Bosiers, MD
principal investigator · A.Z. Sint-Blasius

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Sep 2013. You cannot join it, but the record below documents what was studied.

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