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    • 3. 发明申请
    • HIP IMPLANT REGISTRATION IN COMPUTER ASSISTED SURGERY
    • 计算机辅助手术中的HIP植入式注册
    • WO2009067235A1
    • 2009-05-28
    • PCT/US2008/012970
    • 2008-11-19
    • BLUE ORTHO SASSTIEHL, James, B.
    • STIEHL, James, B.
    • G05B19/18
    • A61B19/50A61B34/10A61B34/20A61B2034/108A61B2034/2055A61F2/32
    • A computer assisted surgical navigation system and method is disclosed for registering the position of prosthetic hip joint components. Elements are applied to the pelvis and femur, generating a three-dimensional array. These two arrays combine to derive a reference point representing the native joint. A tracking device with a pre-determined shape and dimensions that precisely articulate with an acetabular cup component generates a third three-dimensional array. The device has a further shape and dimensions that independently articulate precisely with a neck portion of a femoral component, which represents a prosthetic joint center that is independently registered in the system. The tracking device concurrently registers the three dimensional positions of the femoral and acetabular prosthetic components, along with the prosthetic joint center and the native joint center, respectively enabling alterations in three dimensional location of the leg length and offset prior to reduction of the prosthetic joint.
    • 公开了一种用于记录假肢髋关节部件的位置的计算机辅助手术导航系统和方法。 元素应用于骨盆和股骨,产生三维阵列。 这两个阵列结合起来导出一个表示本地关节的参考点。 具有与髋臼杯部件精确铰接的预定形状和尺寸的跟踪装置产生第三个三维阵列。 该装置具有与股骨部件的颈部部分精确独立地铰接的另外的形状和尺寸,其表示独立地注入到系统中的假体关节中心。 跟踪装置同时将股骨和髋臼假体部件的三维位置以及假肢关节中心和天然关节中心分别在假体关节减少之前分别支撑脚长度和偏移的三维位置的变化。