Safety and Performance of TAVI of Venus MedTech Aortic Valve Prosthesis

Study Overview
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Brief Summary
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objectives Evaluate the performance of Venus MedTech aortic valve prosthesis intervention by femoral artery Evaluate safety and clinical benefit of percutaneous implantation of the Venue MedTech aortic valve prosthesis. Continuous observe 12 months of safety and efficacy. Approximately 80 patients presenting with native aortic valve stenosis necessitating valve replacement which are considered unsuitable for Surgical Valve Replacement, with a high surgical risk, as attested to by both the surgeon and the cardiologist are recruited in the study. Safety and performance will be evaluated at discharge and at 30 days post procedure. Valve safety, performance and placement will be followed up at 6 and 12 months post-procedure.

Detailed Description
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A prospective OPC study to evaluate its performance and long-term safety and effectiveness of Venus-A aortic valve.

Official Title
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Clinical Evaluation of the Safety and Performance of Percutaneous Implantation of the Venus MedTech Aortic Valve Prosthesis for Patients Who Cannot Undergo Surgical Valve Replacement

Conditions
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Aortic Valve Stenosis, Aortic Valve Calcification

Intervention / Treatment
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* Device: Venus MedTech Aortic Valve Prosthesis


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Senile degenerative aortic valve stenosis with echocardiography derived criteria: mean gradient ≥ 40 mm Hg, or jet velocity ≥ 4.0 m/s, or an aortic valve area (AVA) of < 0.8 cm2 (or AVA index < 0.5 cm2/m2) Symptomatic due to aortic valve stenosis as demonstrated by NYHA Functional Class ≥ II The subject or the subject's legal representative was informed of the nature of the study, agreed to its provisions and provided written informed consent as approved by the Institutional Review Board of the respective clinical site. The subject agreed to comply follow-up evaluation is evaluated by at least one cardiologist and two cardiovascular surgeon, and they agreed that medical factors precluding operation suitable for surgery (the probability of death or serious, irreversible morbidity exceeded 50%) STS score ≥ 10% Exclusion Criteria: Patient refuses aortic valve replacement surgery. Evidence of an acute myocardial infarction ≤ 1 month before the intended treatment [defined as: Q wave MI, or non-Q wave MI with total CK elevation of CK-MB ≥ twice normal in the presence of MB elevation and/or troponin level elevation (WHO definition)]. Aortic valve is a congenital unicuspid or congenital bicuspid valve, or is non-calcified. Mixed aortic valve disease (aortic stenosis and aortic regurgitation with predominant aortic regurgitation >3+). Any therapeutic invasive cardiac procedure resulting in a permanent implant that is performed within 30 days （6 month if DES implant） Implanted any heart valve prosthesis, prosthetic valve ring, severe mitral valve ring calcification (MAC), severe（>3＋）mitral valve insufficiency, or Gorelin symptom Blood dyscrasia such as leukopenia (WBC < 3×109/L), acute anemia (Hgb < 90 g/L), thrombocytopenia (PLT < 50×109/L), bleeding diathesis, or history of coagulopathy. Untreated clinically significant coronary artery disease requiring revascularization Hemodynamic instability requiring inotropic therapy or mechanical hemodynamic support devices Need for emergency surgery for any reason Hypertrophic cardiomyopathy with or without obstruction (HOCM) Severe ventricular dysfunction with LVEF < 20% Echocardiographic evidence of intracardiac mass, thrombus or vegetation Active peptic ulcer or upper gastro-intestinal bleeding within the prior 3 months A known hypersensitivity or contraindication to aspirin, heparin, ticlopidine, clopidogrel, Nitinol, or sensitivity to contrast media which cannot be adequately pre-medicated. Native aortic annulus size < 20 mm or> 29 mm as measured by echocardiogram. Cerebrovascular Accident (CVA) within 6 months, including TIA. Renal insufficiency (creatinine > 3.0 mg/dL) and/or end stage renal disease requiring chronic dialysis. Life expectancy < 12 months Significant abdominal or thoracic aorta disease, including aneurysm (defined as maximal luminal diameter 5cm or greater), marked tortuosity (hyperacute bend), aortic arch atheroma (especially if thick [> 5 mm], protruding or ulcerated), narrowing of the abdominal aorta (especially with calcification and surface irregularities), or severe unfolding and tortuosity of the thoracic aorta Iliofemoral vessel characteristics that would preclude safe placement of 16F or 18F introducer sheath such as severe obstructive calcification, severe tortuosity or vessel size diameter < 7 mm. Currently participating in an investigational drug or another device study. Active bacterial endocarditis or other active infections. Bulky calcified aortic valve leaflets in close proximity to coronary ostia

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Venus A-Valve<br>single arm with intervention that percutaneous implantation of the Venus MedTech Aortic Valve Prosthesis | Device: Venus MedTech Aortic Valve Prosthesis<br>* Percutaneous implantation of aortic valve of Venus-A<br>* Other names: Venus A-Valve System;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| All cause mortality and major stroke at 12 months post-procedure. |  | 12 months post-procedure | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Valve performance and placement at 6 and 12 months post-procedure |  | 6 and 12 months post-procedure | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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aortic valve stenosis, Calcification, TAVI, aortic valve Prosthesis