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    • 4. 发明授权
    • Hip replacement in computer-assisted surgery
    • 髋关节置换术在计算机辅助手术中
    • US08790351B2
    • 2014-07-29
    • US12249393
    • 2008-10-10
    • François ParadisLouis-Philippe AmiotDaniel Odermatt
    • François ParadisLouis-Philippe AmiotDaniel Odermatt
    • A61B17/58A61B17/60A61F2/00
    • A61B34/73A61B17/1666A61B34/10A61B34/20A61F2/4609
    • A system for calculating a position and orientation of an acetabular cup in computer-assisted surgery comprises a first trackable reference secured to a pelvis, with a frame of reference being associated with the first trackable reference. A device is positionable between a femoral neck and the acetabulum of the pelvis in a known relation, the device having a second trackable reference. Sensors track the trackable references for position and orientation. A position/orientation calculator calculates a position and orientation of the frame of reference and of the device and for determining an orientation of the neck axis with respect to the frame of reference from the known relation at a desired position of the femur. An implant position/orientation calculator provides cup implanting information with respect to the orientation of said neck axis as a function of the tracking for position and orientation of at least the first trackable reference.
    • 用于计算计算机辅助手术中的髋臼杯的位置和取向的系统包括固定到骨盆的第一可跟踪参考,其中参考系与第一可追踪参考相关联。 一种装置可以以已知的关系定位在股骨颈与骨盆的髋臼之间,该装置具有第二可追踪参考。 传感器跟踪可追踪的位置和方位。 位置/姿态计算器计算参考系和装置的位置和方向,并且用于根据在股骨的期望位置处的已知关系来确定颈部轴线相对于参照系的取向。 植入物位置/取向计算器提供相对于所述颈部轴线的取向的杯子注入信息,作为至少第一可追踪参考物的位置和取向的跟踪的函数。