Investigation of Femoropopliteal In Situ Valve Formation With the InterVene System (INFINITE-US) (INFINITE-US)

August 18, 2025 updated by: Intervene, Inc.
Prospective, non-randomized, multicenter pre-market early feasibility study (EFS) to evaluate subjects treated with the BlueLeaf System for the treatment of symptomatic chronic venous insufficiency (CVI) of the lower extremity

Study Overview

Status

Status

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

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 early feasibility study is to provide information on the BlueLeaf System for the formation of one or more autogenous vein valves constructed from the vein wall of the femoral and/or popliteal vein, in subjects with CVI and who meet the specified eligibility criteria. In particular, the safety and technical feasibility of the procedure will be validated in patients in the United States, including the procedural steps, operator technique, and subject characteristics. The study will assess the safety and effectiveness of the study device acutely and through 5 years.

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 (Actual)

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.
15

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

  • United States
    • Connecticut
      • Darien, Connecticut, United States, 06820
        • The Vascular Experts
    • New York
      • New York, New York, United States, 10016
        • NYU Langone Medical Center
    • North Carolina
      • Chapel Hill, North Carolina, United States, 27599
        • University of North Carolina at Chapel Hill
    • Pennsylvania
      • Pittsburgh, Pennsylvania, United States, 15212
        • Allegheny General Hospital
    • Virginia
      • Norfolk, Virginia, United States, 23507
        • Sentara Vascular Specialists

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

Description

Key Inclusion Criteria

  • Failed at least 6 months of conservative therapy at some point during the course of their CVI management (symptoms not adequately resolved or patient non-compliant/unable to tolerate)
  • Deep system venous reflux characterized by >1 second reflux time in two vein segments (vein segments defined as: proximal femoral, distal femoral, and popliteal), as assessed by duplex ultrasound (DUS) with patient in the standing position

  • Presence of at least two potential target sites within a target vessel as assessed preliminarily by DUS, with a target site being defined as a segment within the femoral or popliteal vein that is:

    7mm to 11mm in luminal diameter and at least 3cm long and absent features that, in the Investigator's opinion, would preclude formation of a monocuspid valve (at any orientation).

  • In the Investigator's opinion, the subject is a good candidate for treatment with the BlueLeaf System based on their symptoms, quality of life, anatomy, and the likelihood of benefit from continued conservative therapy

Key Exclusion Criteria:

  • Untreated significant superficial venous incompetence which, in the opinion of the Investigator, may be the primary source of existing symptoms
  • Acute deep venous thrombosis (DVT) within 1 year of consent
  • Deep venous intervention (includes stenting) in the target limb or outflow vessels within 3 months of consent
  • Flow-limiting venous outflow obstruction central to the intended target sites, defined by a common femoral vein duplex exam found to have a continuous waveform without respiratory variation
  • Contraindications to all protocol specified anticoagulation options
  • Known and uncontrolled hypercoagulopathy (i.e. hypercoagulopathy that cannot be adequately managed/controlled with medication)
  • Women on long-term oral contraceptives
  • Non-ambulatory patients
  • Significant peripheral arterial disease with an ankle-brachial index of < 0.70 or with incompressible vessels
  • New York Heart Association Class III or IV heart failure
  • Patients with a history of right heart failure occurring as a consequence of, for example, biventricular failure, intrinsic pulmonary disease, chronic thromboembolic pulmonary hypertension, and other etiologies that result in elevated right-sided pressures.
  • Active systemic infection
  • Invasive surgical procedure within the last 3 months that in the Investigator's opinion would interfere with the study procedure or results
  • Chronic renal insufficiency with creatinine level of ≥ 2mg/dL
  • Hemoglobin level < 9.0 mg/dL
  • Platelet count < 50,000 or > 1,000,000/mm3
  • Total white blood cell count < 3,000/mm3
  • Subject is enrolled in another clinical study that, in the opinion of the Investigator, may conflict with this study or compromise study results
  • Comorbidity risks or other concerns which, in the opinion of the Investigator, either limits longevity or likelihood of complying with the protocol and its prescribed follow up (e.g. recent cancer or stroke); or precludes patient from being transitioned to open surgery if complication requiring surgical intervention occurs during the procedure (such as severe vein laceration).

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: Investigational
Subjects will be treated with the investigational device and followed per protocol.
Device: BlueLeaf® Endovenous Valve Formation System (BlueLeaf System)
The BlueLeaf System is a single-use, disposable device designed to modify the vein wall to form one or more functional autogenous valves to improve the hemodynamics of the deep venous system treated.

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
Primary Safety Endpoint: The Number of Subjects Experiencing a Major Adverse Event (MAE), Composed of the Following
Time Frame: 30-day post-procedure
  • Symptomatic pulmonary embolism
  • DVT anywhere in the deep venous system of the treatment limb
  • Occlusive valve pocket thrombus (VPT)
  • Non-occlusive stenosis in the target vessel (including due to scarring, inflammation, VPT, etc.) leading to persistent worsening of symptoms attributable to venous flow obstruction, or requiring post-procedural surgical or endovascular re-intervention
  • Device or procedure-related venous or arterial injury in the treated limb (such as Arteriovenous Fistula (AVF's), bleeding, pseudo aneurysm) leading to worsening of symptoms that require post-procedural surgical or endovascular re-intervention or requiring transfusion of more than 2 units of blood. (Note: Peri-procedural stiches placed to assist with closure of the access site will not be characterized as a primary safety failure.)
  • Device or procedure-related death
30-day post-procedure
Change in Revised Venous Clinical Severity Score (rVCSS) From Baseline
Time Frame: Baseline, 30-days, 12-weeks, 210-days and 365-days post-procedure
Assessment of changes in the rVCSS; the score is a composite based on a rating score of none (0), mild (1), moderate (2) and severe (3) for symptoms and clinical signs, the number of active ulcers (0, 1, 2, >/=3), duration of ulcers (<3 months, >3 months but <1 year, not healed for >1 year), active ulcer size (diameter <2cm, diameter 2-6cm, and diameter >6cm), and use of compression therapy (not used (0), intermittent use of stockings (1), wears stockings most days (2), and full compliance (3)). A higher VCSS would indicate a worse outcome.
Baseline, 30-days, 12-weeks, 210-days and 365-days post-procedure

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.
Intervene, Inc.

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: Jeff Elkins, Intervene, Inc.

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.
February 13, 2020

Primary Completion (Actual)

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.
September 30, 2023

Study Completion (Actual)

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.
September 30, 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).
January 7, 2020

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.
January 8, 2020

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.
January 13, 2020

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 19, 2025

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 18, 2025

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, 2025

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.
  • CLN004

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

Yes

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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Sponsors and Collaborators

Medical Conditions

Drug Interventions

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

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