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    • 3. 发明申请
    • HEART VALVE PROSTHESIS
    • 心脏瓣膜预防
    • WO1991002500A1
    • 1991-03-07
    • PCT/SU1989000217
    • 1989-08-18
    • EVDOKIMOV, Sergei VasilievichMELNIKOV, Alexandr PetrovichKARTOSHKIN, Vyacheslav MikhailovichGORSHKOV, Jury VladimirovichPERIMOV, Jury AlexandrovichPOPOV, Leonid LeonidovichUDALTSOV, Vladimir FedorovichSMYSHLYAEV, Leonid IvanovichKONSTANTINOV, Boris Alexeevich
    • A61F02/24
    • A61F2/2409A61F2/2406
    • A heart valve prosthesis has an annular frame (9) in which is mounted a disk-shaped closing element (10) with an excentrical axis (O-O') of rotation from the closed position to the open one and backward effected by means of a rotation means (11). The latter comprises two support pins (15) provided with cam surfaces (16) intended for rotation of the closing element (10) from its open position to the closed one, and a supporting part (21) which interacts with the closing element (10) in its closed position and is connnected to the frame (1) by means of crosspieces (25). Each of the crosspieces (25) has another supporting part (26) interacting with the closing element (10) in its closed position. The vectors (R21, R26) of reaction forces arising on the supporting parts (21 and 26) are of the same direction which is opposite to the vector of the blood flow head resultant force (F14) applied at the mass centre (23). The fulcrum of the reaction forces (R21 and R26) is situated in one and the same plane and counterbalances the flow head resultant force (F14).
    • 心脏瓣膜假体具有环形框架(9),其中安装有从闭合位置到打开位置的旋转的外侧轴线(O-O')的盘形闭合元件(10),并且通过 旋转装置(11)。 后者包括设置有用于使闭合元件(10)从其打开位置旋转到闭合元件的凸轮表面(16)的两个支撑销(15),以及与闭合元件(10)相互作用的支撑部分(21) )处于其关闭位置,并且通过横档(25)连接到框架(1)。 每个挡条(25)具有在闭合位置与关闭元件(10)相互作用的另一个支撑部分(26)。 在支撑部件(21和26)上产生的反作用力的矢量(R21,R26)与在质心中心(23)施加的血流头合力(F14)的矢量相反方向。 反作用力(R21和R26)的支点位于同一平面上,并平衡流动头合力(F14)。