Pre-stressing devices incorporating materials subject to stress softening
    1.
    发明授权
    Pre-stressing devices incorporating materials subject to stress softening 有权
    预应力装置包含受应力软化的材料

    公开(公告)号:US06287338B1

    公开(公告)日:2001-09-11

    申请号:US09265791

    申请日:1999-03-10

    IPC分类号: A61F224

    CPC分类号: A61F2/2415

    摘要: A method and apparatus for pre-stressing devices incorporating materials subject to stress softening is disclosed, as well as the resulting device. The method includes fabricating a heart valve with an inflow side and an outflow side. At least a portion of the heart valve includes a material subject to stress softening. The material experiences stress when a pressure differential occurs between the inflow side and the outflow side of the valve. The method includes creating a stress in the material prior to implantation in order to stabilize the stress/strain response of the material prior to implantation.

    摘要翻译: 公开了一种用于预应力加载受到应力软化的材料的装置的方法和装置,以及所得装置。 该方法包括制造具有流入侧和流出侧的心脏瓣膜。 心脏瓣膜的至少一部分包括受到应力软化的材料。 当在阀的流入侧和流出侧之间发生压差时,材料经受应力。 该方法包括在植入之前在材料中产生应力,以便在植入之前稳定材料的应力/应变响应。

    Heart valve leaflet
    2.
    发明授权
    Heart valve leaflet 有权
    心脏瓣膜小叶

    公开(公告)号:US06283994B1

    公开(公告)日:2001-09-04

    申请号:US09292914

    申请日:1999-04-16

    IPC分类号: A61F224

    摘要: A heart valve is disclosed which includes a valve body and a plurality of flexible leaflets coupled to the valve body. The plurality of leaflets has an open position and a closed position. Each of the plurality of leaflets comprises a belly when the plurality of leaflets are in their respective closed positions. The belly of one or more of the plurality of leaflets has a continuous curvature except for a non-continuous portion.

    摘要翻译: 公开了一种心脏瓣膜,其包括阀体和联接到阀体的多个柔性传单。 多个传单具有打开位置和关闭位置。 当多个传单处于其各自的关闭位置时,多个传单中的每一个包括腹部。 除了非连续部分之外,多个小叶中的一个或多个的腹部具有连续的曲率。

    Heart valve leaflet with scalloped free margin
    4.
    发明授权
    Heart valve leaflet with scalloped free margin 有权
    心脏瓣膜小叶带扇形游离边缘

    公开(公告)号:US06283995B1

    公开(公告)日:2001-09-04

    申请号:US09292485

    申请日:1999-04-15

    IPC分类号: A61F224

    CPC分类号: A61F2/2412

    摘要: A heart valve prosthesis includes a molded body and a plurality of leaflets. Each leaflet includes a free margin having opposite ends and a mid-point. The opposite ends are attached to a peripheral portion of the valve. Each free margin is adjacent each other free margin to form a natural-state non-uniform gap therebetween. The gap has a maximized width adjacent the mid-point of each leaflet. Each free margin is scalloped to form a peak at the opposite ends and a mid-point peak between the opposite ends. Each peak is substantially the same height above the base.

    摘要翻译: 心脏瓣膜假体包括模制体和多个传单。 每张小叶都包括一个具有相对端和一个中点的自由边。 相对的端部附接到阀的周边部分。 每个自由边缘彼此相邻的自由边缘以在其间形成自然状态的不均匀间隙。 间隙在每个小叶的中点附近具有最大宽度。 每个自由边缘是扇形的,以在相对端形成一个峰,并在相对端之间形成一个中点峰。 每个峰基本上与基座上方相同的高度。