By surgically removing a valve that cannot be restored to normal function and replacing it with an artificial valve, normal physiological function can be restored and clinical symptoms can be relieved or improved. This surgery is called “valve replacement surgery”. The human heart has four valves, namely the tricuspid, pulmonary, mitral and aortic valves, which act as one-way valves to ensure that blood flows in a fixed direction in the heart. Normal heart valves are severely damaged, deformed, thickened and adhered due to rheumatic or bacterial invasion, or the valves are narrowed and incompletely closed due to trauma or congenital reasons to promote the one-way valve function, which will affect the normal operation of blood, and then affect the heart function and produce a series of clinical symptoms of cardiac membrane disease. The normal physiological function can be restored and the clinical symptoms can be relieved or improved by replacing the valve that cannot be restored to normal function with an artificial valve using surgical methods. This procedure is called “valve replacement surgery”. Every year, thousands of patients all over the world get a new life as a result of this surgery, and many valve replacement surgeries have been performed in China, with positive clinical results, which not only improve the function of the heart, but also partially or fully restore the ability to work and prolong life.