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发明公开
CN108403260A 瓣膜假体和递送方法 有权

瓣膜假体和递送方法
摘要：
在某些实施例中，一种瓣膜假体包括：入口部分，其基本上为s形并且被配置成接合自体心房的流出道的底部。在某些实施例中，一种瓣膜假体包括：腱索引导元件，其被配置成减小腱索的弯曲以减小在心动周期期间腱索上的应力。在某些实施例中，一种瓣膜假体包括：中央部分，中央部分具有沙漏形状，被配置成箍缩自体瓣环以便在瓣膜部位内提供瓣膜假体的轴向固定。在某些实施例中，一种瓣膜假体包括：框架，框架的流出端扩大以当假体瓣叶完全打开时在框架的流出端与假体瓣叶的流出端之间提供间隙。
摘要（英）：

In some embodiments, a valve prosthesis includes an inlet portion that is substantially s-shaped and configured to engage the floor of the outflow tract of the native heart atrium. In some embodiments, a valve prosthesis includes a chordae guiding element configured to reduce bending of the chordae to reduce stress on the chordae during the cardiac cycle. In some embodiments, a valve prosthesis includes a central portion having an hourglass shape configured to pinch a native annulus in order to provide axial fixation of the valve prosthesis within a valve site. In some embodiments, a valve prosthesis includes a frame having an outflow end that is flared to provide a gap between an outflow end of the frame and an outflow end of prosthetic leaflets when the prosthetic leaflets are fully opened.

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