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    • 82. 发明公开
    • Adjustable reamer with tip tracker linkage
    • Einstellbare chirurgische Reibahle mit Spitzverfolgungssystem
    • EP1442729A1
    • 2004-08-04
    • EP04250312.8
    • 2004-01-21
    • Howmedica Osteonics Corp.
    • Dong, Nicholas N.Nogler, MichaelKrismer, Martin
    • A61F2/46A61B17/16
    • A61B17/1666A61B34/20A61B2034/2055A61F2/4609A61F2002/30538A61F2002/4696A61F2250/0006
    • A positioning tool for a joint socket cutting instrument or a implant is designed for use with a minimally invasive surgical procedure and in conjunction with a computer assisted surgical procedure. The positioning tool has a longitudinally extending drive shaft having a moveable joint at a first end and a drive coupling for connecting to a power source at a second end. A holder for mounting a cutting tool such a drill or as an acetabular cutting instrument or for mounting an acetabular implant is coupled to the moveable joint at the first end of the drive shaft for movement with respect to the drive shaft. The holder is rotatable about a central axis thereof when the drive shaft is rotated. The drive shaft includes a shaft bearing mounted thereon which is pivotally coupled to the shaft at a fixed longitudinal position and is pivotally coupled to a longitudinally extending first arm having a handle. A tracker system which is capable of being utilized by a computer-aided surgical system is mounted on the first arm. A second arm is provided which is pivotally connected to the holder at a first end and pivotally connected to the first arm at a second end. The resulting four bar linkage allows the holder and the cutting instrument/implant to be manipulated in any position while the known geometric relationship between the tracker and the holder allows the location of the holder to be displayed by the computer on a cathode ray tube with respect to a joint.
    • 用于关节插座切割器械或植入物的定位工具被设计用于微创外科手术并结合计算机辅助外科手术。 定位工具具有纵向延伸的驱动轴,其具有在第一端处的可移动接头和用于在第二端处连接到电源的驱动联接器。 用于安装诸如钻头或髋臼切割器具的切割工具或用于安装髋臼植入物的保持器在驱动轴的第一端处联接到可移动的接头以相对于驱动轴移动。 当驱动轴旋转时,保持器可围绕其中心轴线旋转。 驱动轴包括安装在其上的轴承轴,其在固定的纵向位置枢转地联接到轴,并且枢转地联接到具有手柄的纵向延伸的第一臂。 能够由计算机辅助外科系统使用的跟踪系统安装在第一臂上。 提供第二臂,其在第一端处枢转地连接到保持器,并且在第二端枢转地连接到第一臂。 所产生的四杆连杆允许保持器和切割器械/植入物在任何位置被操纵,而跟踪器和保持器之间的已知几何关系允许保持器的位置由计算机显示在阴极射线管上,相对于 联合