Artificial heart valve | 合法醫療器材資訊網

Anartificialheartvalveisaone-wayvalveimplantedintoaperson'shearttoreplaceavalvethatisnotfunctioningproperly(valvularheartdisease).Artificial ...

Replacement of a valve in the human heart

An artificial heart valve is a one-way valve implanted into a persons heart to replace a heart valve that is not functioning properly (valvular heart disease). Artificial heart valves can be separated into three broad classes: mechanical heart valves, bioprosthetic tissue valves and engineered tissue valves.

The human heart contains four valves: tricuspid valve, pulmonary valve, mitral valve and aortic valve. Their main purpose is to keep blood flowing in the proper direction through the heart, and from the heart into the major blood vessels connected to it (the pulmonary artery and the aorta). Heart valves can malfunction for a variety of reasons, which can impede the flow of blood through the valve (stenosis) and/or let blood flow backwards through the valve (regurgitation). Both processes put strain on the heart and may lead to serious pr...