Feasibility Study of the DragonFly-T Transcatheter Tricuspid Valve Repair System for the Treatment of Tricuspid Regurgitation
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Tricuspid Regurgitation
- Sponsor
- Hangzhou Valgen Medtech Co., Ltd
- Enrollment
- 10
- Locations
- 1
- Primary Endpoint
- Incidence of major adverse events (MAEs)
- Status
- Recruiting
- Last Updated
- 3 years ago
Overview
Brief Summary
This study is a prospective design. Patients are severe tricuspid regurgitation (TR) (≥ 3+) who remained clinically symptomatic after guideline-directed medical treatment. After signing an informed consent form, subjects are enrolled and treated with the DragonFly-T Transcatheter Tricuspid Valve Repair System. All subjects receive clinical follow-up immediately after the procedure, before discharge, 30 days after the procedure, 6 months after the procedure, 12 months, and 2, 3, 4, and 5 years after the procedure.
The incidence of MAEs (Major Adverse Events) at 30 days is used as the safety endpoint. The MAEs include stroke, cardiovascular death, new renal failure, endocarditis requiring surgery, and non-elective cardiovascular interventions due to device-related adverse events.
The efficacy endpoints include acute procedural success, acute device success, the incidence of all-cause mortality and/or heart failure rehospitalization at 12 months after the procedure, the percentage of patients with tricuspid regurgitation of 2+ or less, the percentage of patients with tricuspid regurgitation reduced by at least one grade, the improvement in 6 minutes walk test, New York Heart Association (NYHA) class, quality of life change as assessed by the Kansas City Cardiomyopathy Questionnaire (KCCQ) score and change in edema scale grading.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Age ≥ 18 years
- •In the judgment of the local cardiac team, the patient has been adequately treated according to applicable standards (including medical management), including:
- •Optimal pharmacological therapy for TR (e.g. diuretics);
- •Drug and/or interventional treatment of mitral regurgitation, atrial fibrillation, coronary artery disease, and heart failure;
- •The Eligibility Committee confirms that the patient has received adequate medical treatment.
- •Despite the drug optimization treatment according to the above method, patients still have symptoms of TR (TR grade≥3+).
- •New York Heart Association (NYHA) Cardiac function Class II-IVa.
- •The patient is suitable for transcatheter tricuspid valve repair, suitable for the use of the study device, and the femoral vein access is feasible and can accommodate a 24F catheter.
- •Patient must provide written informed consent before any steps related to the study.
Exclusion Criteria
- •Tricuspid valve leaflet anatomy, which may preclude clip implantation or proper clip positioning on the leaflets, including but not limited to the following:
- •Evidence of calcification in the grasping area;
- •Presence of a severe coaptation defect of the tricuspid leaflets;
- •Severe leaflet defect(s) and cleft preventing proper device placement determined by ECL;
- •Epstein anomaly.
- •Previous tricuspid valve surgery or transcatheter therapy.
- •Echocardiography suggested intracardiac thrombus, tumor, or mass.
- •Transthoracic Echocardiogram and Transesophageal Echocardiography are unable to evaluate tricuspid valve anatomy.
- •Refractory heart failure requiring intervention (e.g., left ventricular assist device, heart transplantation) (ACC/AHA Stage D heart failure).
- •Severe and uncontrolled hypertension: systolic blood pressure ≥ 180mmHg and/or diastolic blood pressure ≥ 110mmHg.
Outcomes
Primary Outcomes
Incidence of major adverse events (MAEs)
Time Frame: 30 days
MAEs include stroke, cardiovascular death, new renal failure, endocarditis requiring surgery, and non-elective cardiovascular interventions due to device-related adverse events
Secondary Outcomes
- Incidence of all-cause mortality and/or heart failure rehospitalization(12 months)
- Tricuspid regurgitation severity change(30 days, 6 months, 12 months)
- Change in 6 Minutes Walk Test(30 days, 6 months, 12 months)
- Change in NYHA class(30 days, 6 months, 12 months)
- Acute procedural success(Immediately after procedure)
- Acute device success(Immediately after procedure)
- Tricuspid regurgitation severity(30 days, 6 months, 12 months)
- Quality of life improvement(30 days, 6 months, 12 months)
- Change in edema grading(30 days, 6 months, 12 months)