ZENFlex-Registry to Evaluate the Outcome of Bare Metal Stent-assisted Angioplasty

August 29, 2021 updated by: Zhejiang Zylox Medical Device Co., Ltd.

ZENFlex-Registry to Evaluate the Outcome of Bare Metal Stent-assisted Angioplasty in the Treatment of Superficial Femoral and/or Proximal Popliteal Arteries

A prospective, multi-center, single-arm registry to evaluate the safety and efficacy of bare metal stent-assisted percutaneous transluminal angioplasty (PTA) in the treatment of superficial femoral and/or proximal popliteal artery (P1) lesions in patients with symptomatic peripheral artery disease

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The purpose of this registry is to collect acute and follow-up (up to 12 months) safety and efficacy data on the ZENFlex™ Peripheral Stent System in the stent-assisted angioplasty treatment of patients with de novo or restenotic lesion(s) of the native superficial femoral artery (SFA) and/or proximal popliteal artery (PPA, P1 segment) when used according to IFU. Up to 100 subjects will be enrolled in this study at up to 5 sites in Germany.

This study is a prospective, single-arm observational registry and does not include an active control arm. Therefore, no formal sample size calculation has been performed. All subjects will be evaluated at pre-discharge and during clinical follow-up visits 6 (182 ± 30 days) and 12 (365 ± 30 days) months post-procedure.

Primary endpoints are patency rate after one year and composite of freedom from device and procedure-related death through 12 months post procedure as well as freedom from both target limb major amputation and clinically-driven target lesion revascularization.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
200

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • Germany
      • Halle, Germany, 06114
        • Recruiting
        • Popescu Diakoniekrankenhaus Halle gGmbH Klinik für Innere Medizin
        • Contact:
          • Corneliu Gheorghe, Phd. med
          • Phone Number: +49(0)345 778 6344
        • Principal Investigator:
          • Corneliu Gheorghe

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • 1. Patient is ≥ 18 years old at the time of consent. 2. Subject has provided written informed consent prior to participation in the study, understands the purpose of this study and agrees to comply with all protocol-specified examinations and follow-up appointments.

    3. Rutherford Classification Category 2-4. Subjects with Rutherford Class 2 have gone through a conservative therapy without success. 4. De novo stenotic, restenotic or occlusive lesion(s) located in the superficial femoral artery and/or proximal popliteal artery (P1 segment) suitable for stenting after PTA.

    5. Lesion location starts distal to CFA bifurcation (below origin of deep femoral artery) and should not extend beyond the P1 segment of the popliteal artery.

    6. Lesion(s) is/are located at least 2 cm from any stent if target limb was already previously stented.

    7. >70 % diameter stenosis or occlusion by visual angiographic estimate. 8. Patent inflow (treatment of inflow is allowed before treatment of the target lesion if successful).

    9. Patent ipsilateral popliteal artery (P2 and P3 segments) and at least 1 patent infrapopliteal artery in continuity to ankle. 10. Target reference vessel diameter ≥ 4 - ≤ 7.0 mm.

Exclusion Criteria:

  • Patients will be excluded from the registry if any of the following criteria is met:

    1. Target Lesion previously tested with a stent or surgery.
    2. Rutherford Classification Category 0, 1, 5 or 6.
    3. Inability to tolerate antithrombotic or antiplatelet therapies.
    4. Known allergy or contraindication to contrast medium that, in the opinion of the investigator, can't be adequately pre-medicated.
    5. Non-dilatable severely calcified lesion.
    6. Known hypersensitivity to nitinol and/or its components (e.g. nickel, titanium).
    7. Acute or subacute thrombus in the target lesion.
    8. Documented life expectancy < 13 months
    9. Pregnancy or female patient with child bearing potential not taking adequate contraceptives or currently breastfeeding.
    10. Other comorbidity risks which in the opinion of the investigator limit longevity or likelihood of compliance with protocol follow up.
    11. Myocardial infarction or stroke within 90 days prior to index procedure.
    12. Hypercoagulable state.
    13. Patient is currently enrolled in any other clinical investigational trial(s).
    14. Use of alternative therapy in target lesion during index procedure, e.g. atherectomy, lysis therapy, laser therapy, DES, re-entry-devices, cutting / scoring balloon

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: ZENFLEX stent Group
subjects applying ZENFLEX peripheral stent system
Device: ZENFLEX peripheral stent system
The ZENFLEX Peripheral Stent System is designed to deliver a self-expanding stent to the iliac artery, superficial femoral arteries and / or proximal popliteal arteries to improve luminal diameter. The self-expanding stent is composed of nickel titanium alloy (nitinol); contains a total of 12 tantalum / gold radiopaque markers and imparts an outward radial force on the luminal surface of the vessel to establish patency.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Patency rate
Time Frame: 12 (365 ± 30 days) months
patency rate after one year defined as absence of clinically driven TLR (due to symptoms and drop of ABI of ≥ 20% or > 0.15 when compared to post-procedure baseline) or restenosis with PVR > 2.4 evaluated by Duplex Ultrasound
12 (365 ± 30 days) months
Procedure-related death
Time Frame: 12 (365 ± 30 days) months
Composite of freedom from device and procedure-related death through 12 months post procedure as well as freedom from both target limb major amputation and clinically-driven target lesion revascularization。
12 (365 ± 30 days) months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
TLR rate at 6 and 12months
Time Frame: 6 (182 ± 30 days) and 12 (365 ± 30 days) months
The ratio of either repeat percutaneous or surgical revascularization for target lesions
6 (182 ± 30 days) and 12 (365 ± 30 days) months
Sustained clinical improvement
Time Frame: 12 (365 ± 30 days) months
an improvement shift in the Rutherford classification of one class in amputation and TVR free surviving patients at 12 months.
12 (365 ± 30 days) months
WIQ at 6 and 12 months
Time Frame: 6 (182 ± 30 days) and 12 (365 ± 30 days) months
Walking capacity assessment by Walking Impairment Questionnaire (WIQ) at 6 and 12 months vs. baseline
6 (182 ± 30 days) and 12 (365 ± 30 days) months
Duplex-defined binary restenosis (PSVR >2.4) at 6 and 12 months or at any time of re-intervention
Time Frame: 6 (182 ± 30 days) and 12 (365 ± 30 days) months
Duplex-defined binary restenosis (PSVR >2.4) of the target lesion post-procedure and at 6 and 12 months or at any time of re-intervention
6 (182 ± 30 days) and 12 (365 ± 30 days) months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Zhejiang Zylox Medical Device Co., Ltd.

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Dierk Scheinert, Universitätsklinikum Leipzig
  • Principal Investigator: Annett Glanz, Diakoniekrankenhaus Halle

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
December 31, 2018

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2022

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2023

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 21, 2018

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 21, 2018

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 23, 2018

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 31, 2021

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 29, 2021

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2021

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 201805

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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