Completed

NCT Number: NCT01071460

Evaluation of Efficacy and Safety of the FlexStent Self-Expanding Stent System

Purpose of this registry is to determine the efficacy and safety of the self-expanding, extra flexible FlexStent in patient with superficial femor/popliteal artery disease.

The stent has been developed to cope with the extreme requirements of the femoral artery/knee artery and is approved for usage at humans (EC-certified). It is designed to treat narrows of the femoral- and knee artery.

100 patients at 5 German hospital shall be enrolled. After stent implantation follow-up visits at 6 and 12 month take place.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Efficacy of the Study Device

Age range

35 year–85 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Herz-Zentrum Bad Krozingen Abteilung Angiologie, Bad Krozingen, Germany

About this study

Peripheral arterial disease (PAD) represents a major challenge to physicians in treating the Superficial Femoral (SFA) and Popliteal arteries. These arteries represent a harsh environment for any endovascular device. This disease is characterized by long occlusions with relatively low flow and with the vessels exposed to enormous mechanical stress. During flexing of the knee, the SFA/Popliteal arteries can bend, rotate, elongate and compress dramatically. An ideal stent designed for use in the SFA/Popliteal arteries would offer great ranges of movement while adequately supporting the arteries.

The FlexStent® stent provides a great range of motions for a highly flexible femoral artery while adequately supporting the vessel. The intended use for the FlexStent® stent is for the treatment of symptomatic femoropopliteal disease, primarily for atherosclerotic de novo native superficial femoral artery lesions.

The intent of this clinical registry is to demonstrate the efficacy and safety of the FlexStent® stent in patients with superficial femoral/ popliteal artery disease.

Hypothesis: the FlexStent® will be safe and efficacious in treating SFA/popliteal artery diseases.

Primary object: evaluation of efficacy of the FlexStent® measured by the in-stent restenosis using DUS following treatment, 6 and 12 MFU visits.

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

Subjects, male or female, must be between the ages of 35 to 85 years inclusive at the time of consent. A female of childbearing potential may be enrolled, provided she has a negative pregnancy test at Screening.
Subjects must give written informed consent prior to participation in the study and must understand the purpose of this study and be willing to adhere to the study procedures described in this protocol.
Rutherford Classification Category 2-4
Single de novo lesion in the superficial femoro/popliteal artery
Disease segment length ≤150mm

->70% diameter stenosis and occlusion

Patent ipsilateral iliac artery
Patent ipsilateral popliteal artery and at least 1 patent tibial artery in continuity to ankle
Target reference vessel diameter 3.5-7.5 mm

Exclusion criteria

Target lesion previously treated with a stent or surgery.
Rutherford Classification Category 0,1,5 or 6.
Inability to tolerate antithrombotic or antiplatelet therapies.
Pregnancy.
Other comorbidity risks which in the opinion of the investigator limit longevity or likelihood of complying with protocol follow up.
Serum creatinine > 2.5 mg/dL.
Myocardial infarction or stroke within 90 days of enrollment.
Hypercoagulable state.
Uncontrollable hypertension.
Patients currently enrolled in any other clinical trial(s).

Treatment and study plan

FlexStent Femoropopliteal Self-Expanding Stent System

Device

Peri-procedural management will be no different to routine SFA/Popliteal Artery intervention Standard medical therapy

Procedural techniques will be identical to routine protocols for SFA/Popliteal Artery stenting. technique suggested:

Contralateral retrograde common femoral cross-over access or antegrade access
Target lower limb arteries fully imaged angiogram. with measurement of SFA/Popliteal Artery target lesion length and normal vessel diameter immediately above and below target lesion
Pre-stenting balloon dilatation of target lesion in all total occlusions and critical stenosis
Deployment of an appropriately sized FlexStent® to cover target lesion
Post-stent balloon dilate stent using a semi-compliant angioplasty balloon to enable accurate post-dilatation of stent to target diameter
Post stenting angiography assessing target lesion parameters, run-off vessel patency and complications

Primary outcomes

in-stent binary restenosis using DUS

Time frame: after treatment, at 6 and 12 MFU

Secondary outcomes

technical success, defined as the ability to implant the stent with a residual angiographic stenosis no greater than 30%

Time frame: at 6 and 12 MFU

Sponsors and collaborators

Lead sponsor

Provascular GmbH

Other

Registry information

Official study title

The FlexStent-Registry, Evaluation of Efficacy and Safety of the FlexStent Femoropopliteal Self-Expanding Stent System

Important dates

Study start: 2009
Primary completion: 2012
Study completion: 2012
First posted: Feb 19, 2010
Registry last updated: Nov 9, 2012

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.