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    SURGICAL INSTRUMENT WITH A COLLET LOCKING AND INDEXING SYSTEM
    2.
    发明公开
    SURGICAL INSTRUMENT WITH A COLLET LOCKING AND INDEXING SYSTEM 有权
    与筒夹锁和指数化手术器械

    公开(公告)号：EP1511432A1

    公开(公告)日：2005-03-09

    申请号：EP03739050.7

    申请日：2003-06-05

    申请人： Medtronic, Inc. D/B/A Medtronic Midas Rex

    发明人： TIDWELL, Durrell, G. ,  SHORES, Rex, Wesley

    IPC分类号： A61B17/16

    CPC分类号： A61B17/162 ,  A61B17/1633

    摘要： A surgical instrument is provided for cutting bone and other tissue. The surgical instrument includes a motor assembly (12), a collet (20), a locking nut (66), and an attachment (14). The motor assembly includes a cavity (106) having a groove (110) on an inner surface that corresponds to a groove (108) on an outer surface of the collet. The corresponding grooves form an aperture when the collet is inserted into the cavity. The insertion of a pin (12) into the aperture prevents rotation of the collet relative to the cavity. The locking nut is placed over the collet and fastened to the motor assembly to secure the collet to the motor assembly. The attachment is fastened to the collet by placing protuberances on the attachment into corresponding apertures on the collet. The consistent alignment provided by the locking and indexing system enables the motor assembly and attachment to receive alignment markings before the surgical instrument is assembled.