Clinical trials

The goal of this early feasibility clinical trial is to test a new device called the MitraFix® Transcatheter Mitral Valve System. It aims to learn if the device is safe and if it can help adults who have a severe leaky heart valve (mitral regurgitation). This study is for people who are at high risk for traditional open-heart surgery. The main questions it aims to answer are: Is the MitraFix system safe for participants? Can the device be successfully placed in the heart? Does the device help reduce the valve leak and improve daily life? Participants will: Receive the MitraFix valve through a small tube inserted into a vein in the leg. Visit the clinic for heart tests, walking tests, and health checks for up to one year after the procedure.

The goal of this clinical trial is to explore the early feasibility, initial safety, and efficacy of surgical implantation of a polymer prosthetic heart valve in patients requiring either mitral valve replacement or aortic valve replacement. The main question it aims to answer is: \-- What is the rate of valve-related complications, including thromboembolism, valve thrombosis, severe perivalvular leak, severe bleeding, and endocarditis, at 12 months post-operation? Participants will undergo: * Surgical implantation of a polymer prosthetic valve (mitral valve replacement for mitral valve group and aortic valve replacement for aortic valve group). * Regular follow-up visits at 30 days, 3-6 months, and 12 months post-operation to evaluate clinical outcomes, including echocardiographic assessment and clinical event monitoring.