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    • 5. 发明授权
    • Heart valve prosthesis
    • 心脏瓣膜假体
    • US06638303B1
    • 2003-10-28
    • US09665306
    • 2000-09-19
    • Louis A. Campbell
    • Louis A. Campbell
    • A61F224
    • A61F2/2403
    • A heart valve prosthesis includes an annular body that has a fluid passageway and at least one rigid leaflet that is pivotally mounted in the passageway of the body. The leaflet is movable between a closed position wherein the fluid passageway is substantially closed and an open position wherein the fluid passageway is not substantially closed. The heart valve prosthesis has a biasing mechanism that is connected to the body and leaflet and is configured to exert a force on the leaflet to move the leaflet to the closed position before a second fluid pressure exerted on an outflow surface of the leaflet exceeds a first fluid pressure exerted on an inflow surface of the leaflet.
    • 心脏瓣膜假体包括具有流体通道的环形主体和枢转地安装在身体的通道中的至少一个刚性小叶。 小叶可在关闭位置之间移动,其中流体通道基本上封闭,而打开位置,其中流体通道基本上不关闭。 心脏瓣膜假体具有连接到身体和小叶上的偏置机构,并且构造成在小叶上施加力以将小叶移动到关闭位置,同时施加在小叶的流出表面上的第二流体压力超过第一 施加在小叶流入表面上的流体压力。
    • 7. 发明授权
    • Tilting disk heart valve having cavitation reducing contact geometry
    • 具有气蚀减少接触几何形状的倾斜盘心瓣膜
    • US06200340B1
    • 2001-03-13
    • US09284000
    • 1999-04-01
    • Louis A. Campbell
    • Louis A. Campbell
    • A61F224
    • A61F2/2403
    • A heart valve prosthesis includes a valve housing having an opening formed therein having an inmost arcuate surface and a leaflet pivotally mounted in the opening for movement between an open position and a closed position with the inmost arcuate surface. The leaflet has an outmost edge providing multiple points of contact with the housing. The leaflet also forms a leakage gap adjacent the leaflet major radius and between the inmost and outmost surfaces such that the multiple points of contact are displaced from the leaflet major radius and are adjacent to and on opposite sides of the leakage gap. One or several such leaflets may be provided in the housing. Each leaflet respectively includes the leakage gap and the adjacent multiple points of contact.
    • 心脏瓣膜假体包括具有形成在其中的开口的阀壳体,其具有最前面的弧形表面,以及可旋转地安装在开口中的小叶,用于在打开位置和关闭位置之间与最前面的弓形表面一起运动。 传单具有最外边缘,提供与壳体的多个接触点。 小叶片还形成邻近小叶主半径和最外表面之间的泄漏间隙,使得多个接触点从小叶主半径移位并邻近泄漏间隙的相对侧。 一个或几个这样的传单可以设置在壳体中。 每个小叶分别包括泄漏间隙和相邻的多个接触点。