| 摘要 |
A heart valve (600) includes a valve body (330) made of a flexible material such as pericardium. The valve body is made of two layers of material, an outer lay-er, and an inner layer that defines a plurality of leaflets. The leaflets of the inner layer are attached to the outer lay-er. In some embodiments the valve body is made by cut-ting a single piece of flat source tissue, folding the cut tis-sue and forming it into a tubular pattern having the inner and outer layers. The multi-layer valve body can be mounted on a stent (500) for delivery within a patient's heart. |
