Mechanical valves can also be created from man-made materials and can last longer than animal tissue, but these often require the patient to take an anticoagulant, which is a medicine used to help prevent blood clots.

机械瓣膜也可以由人造材料制成， 并且比动物组织使用寿命更长，但这些通常需要患者服用抗凝剂，这是一种用于帮助预防血栓的药物。