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OpenTrials
Completed

NCT Number: NCT01412450

Efficacity Study With the Protégé EverFlex Stent in Popliteal Lesions

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.

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 4

Primary location

Imeldaziekenhuis, Bonheiden, Antwerp, Belgium

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Who can participate

Healthy volunteers accepted: No

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

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

  • 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.

Treatment and study plan

Nitinol stent

Device

implantation of one Protégé EverFlex stent

Other names: Protégé EverFlex stent

Primary outcomes

  1. primary patency

    Time frame: 12 months post-procedure

    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

Secondary outcomes

  1. Technical success

    Time frame: 1 day post-procedure

    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

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

    Time frame: 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.

  3. Clinical success

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

    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.

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

    Time frame: 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)

  5. Serious adverse events

    Time frame: 1 year

    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.

Sponsors and collaborators

Lead sponsor

Flanders Medical Research Program

Network

Registry information

Official study title

DURABILITY-POP Study - Physician Initiated Trial Investigating the Efficacy of the Implant of Protégé EverFlex Nitinol Stents in Popliteal Lesions

Acronym: DUR-POP

Important dates

Study start
2010
Primary completion
2012
Study completion
2012
First posted
Aug 9, 2011
Registry last updated
Oct 1, 2013

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.

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