Mechanical valves have a long lifespan, generally averaging more than 50 years of service life. A prosthetic mechanical valve is a medical device that can replace heart valves such as the mitral tricuspid aortic valve, and is the first choice for treating severe heart valve disease. Prosthetic valves can be categorized into two types: biologic valves and prosthetic mechanical valves. Biologic valves are more prone to wear and tear and have a shorter lifespan than prosthetic mechanical valves, and generally need to be replaced in about 10 years, but they do not require lifelong anticoagulant medication. Mechanical valves are less prone to wear and tear, are more durable, and have an extremely long lifespan, up to about 50 years if there is no significant reaction, but patients need to take anticoagulant medications such as warfarin for a lifetime of anticoagulant therapy. After the mechanical valve is replaced, it should be reviewed on a regular basis as prescribed by the physician.