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    • 3. 发明申请
    • Distal targeting of locking screws in intramedullary nails
    • 髓内钉锁定螺钉远端靶向
    • US20050080427A1
    • 2005-04-14
    • US10961690
    • 2004-10-08
    • Assaf GovariAvinoam DayanDale DavisonThomas Ferro
    • Assaf GovariAvinoam DayanDale DavisonThomas Ferro
    • A61B17/58A61B17/00A61B17/17
    • A61B17/1725A61B17/1707A61B2090/397
    • In a distal targeting system a hand-held location pad is integral with a guide section for a drill or similar surgical instrument, and has a plurality of magnetic field generators. A sensor, such as a wireless sensor, having a plurality of field transponders, is disposed in an orthopedic appliance, such as an intramedullary nail. The sensor is capable of detecting and discriminating the strength and direction of the different fields generated by the field generators. Control circuitry, preferably located in the location pad is responsive to a signal of the sensor, and determines the displacement and relative directions of an axis of the guide section, and a bore in the orthopedic appliance. A screen display and optional speaker in the location pad provide an operator-perceptible indication that enables the operator to adjust the position of the guide section so as to align its position and direction with the bore.
    • 在远侧瞄准系统中,手持位置垫与用于钻或类似手术器械的引导部分成一体,并且具有多个磁场发生器。 具有多个场应答器的诸如无线传感器的传感器被布置在诸如髓内钉的矫形器具中。 传感器能够检测和区分场发生器产生的不同场强度和方向。 优选地位于定位垫中的控制电路响应于传感器的信号,并且确定导向部分的轴线的位移和相对方向以及矫形器具中的孔。 位置垫中的屏幕显示器和可选的扬声器提供操作者可感知的指示,其使得操作者能够调整引导部分的位置,以便将其位置和方向与孔对准。