Knee prostheses with enhanced kinematics
    9.
    发明授权
    Knee prostheses with enhanced kinematics 有权
    具有增强运动学的膝盖假体

    公开(公告)号:US08202323B2

    公开(公告)日:2012-06-19

    申请号:US12174539

    申请日:2008-07-16

    IPC分类号: A61F2/30 A61F2/38

    CPC分类号: A61F2/3886

    摘要: A knee replacement system includes a proximal tibial posterior camming portion defined by a first radius of curvature with a first origin in a first medio-lateral plane, a distal tibial posterior camming portion defined by a second radius of curvature with a second origin in a second medio-lateral plane, an anterior femoral camming portion of a posterior cam defined by a third radius of curvature with a third origin in the first medio-lateral plane, and a posterior femoral camming portion of the posterior cam and defined by a fourth radius of curvature with a fourth origin in the second medio-lateral plane, wherein the second origin is closer to the lateral tibial portion than the first origin, or the fourth origin is closer to the medial femoral portion than the third origin.

    摘要翻译: 膝关节置换系统包括由第一曲率半径限定的近端胫骨后凸轮部分,第一曲率半径在第一内侧平面中具有第一原点,远端胫骨后凸轮部分由第二曲率半径限定,第二曲率半径在第二曲率半径 中间侧平面,后凸轮的前股骨凸轮部分,其由在第一内侧平面中具有第三原点的第三曲率半径限定,并且后凸轮的后股骨凸轮部分由第四半径 在第二中间侧平面中具有第四原点的曲率,其中第二原点比第一原点更靠近外侧胫骨部分,或者第四原点比第三原点更靠近内侧股骨部分。

    ANTERO-POSTERIOR PLACEMENT OF AXIS OF ROTATION FOR A ROTATING PLATFORM
    10.
    发明申请
    ANTERO-POSTERIOR PLACEMENT OF AXIS OF ROTATION FOR A ROTATING PLATFORM 有权
    旋转平台旋转轴的ANTERO-POSTERIOR放置

    公开(公告)号:US20100016978A1

    公开(公告)日:2010-01-21

    申请号:US12174507

    申请日:2008-07-16

    IPC分类号: A61F2/38

    CPC分类号: A61F2/3868

    摘要: A knee replacement system includes a femoral component including a lateral condylar articulating portion and a medial condylar articulating portion, a tibial tray including an upper articulating surface, and a tibial insert including (i) a first articulating portion for articulating with the lateral condylar articulating portion with a first condylar dwell point, (ii) a second articulating portion for articulating with the medial condylar articulating portion with a second condylar dwell point, (iii) a lower articulating surface for articulating with the upper articulating surface, and (iv) a coupling member for coupling with the tibial tray and defining an axis of rotation about which the tibial insert rotates with respect to the tibial tray, the axis of rotation intersecting the upper articulating surface at a location posterior to a dwell axis including the condylar dwell points when the dwell axis is projected onto the upper articulating surface.

    摘要翻译: 膝盖置换系统包括股骨部件,其包括外侧髁关节部分和内髁关节部分,胫骨托盘,其包括上铰接表面和胫骨插入件,所述胫骨插入件包括:(i)第一铰接部分,用于与所述外侧髁关节部分 具有第一髁突停留点,(ii)用于与内侧髁关节部分与第二髁突停留点铰接的第二铰接部分,(iii)用于与上铰接表面铰接的下关节表面,以及(iv) 用于与胫骨托联接并限定胫骨插入物相对于胫骨托盘旋转的旋转轴线,旋转轴线在包括髁突停留点在内的位置的上方铰接表面相交,包括髁突停留点 驻留轴线投射到上铰接表面上。