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

Intervene, Inc.

Status

Terminated

Conditions

Chronic Venous Insufficiency (CVI)

Deep Vein Reflux

Treatments

Device: BlueLeaf® Endovenous Valve Formation System (BlueLeaf System)

Study type

Interventional

Funder types

Industry

Identifiers

NCT04225806

CLN004

Details and patient eligibility

About

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

Full 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.

Enrollment

15 patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion and exclusion criteria

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).