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    • 7. 发明申请
    • COLLAPSIBLE BONE SCREW APPARATUS
    • 可拆式骨螺钉装置
    • WO2010019514A2
    • 2010-02-18
    • PCT/US2009053300
    • 2009-08-10
    • ARCH DAY DESIGN LLCMORRIS STEPHENWEISEL TOMPISARNWONGS ROGER
    • MORRIS STEPHENWEISEL TOMPISARNWONGS ROGER
    • A61B17/86
    • A61B17/702A61B17/72A61B17/742A61B17/864A61B17/8685
    • A collapsible bone screw for healing bone fragments across a bone fracture includes an externally threaded inner screw member and an externally threaded outer screw member. The inner screw member is initially screwed into an inner bone portion. An unthreaded portion of the outer screw member is movably joined to the inner screw member. The outer screw member is screwed until it gains purchase in an outer bone portion. As Impaction occurs over time, the collapsible bone screw apparatus may shorten in length as the two screw members slide, telescope or otherwise axially move toward each other to shorten the overall length, thereby preventing any portion of the screw apparatus from protruding out of the bone. A bone screw kit of multiple inner and outer screw members are provided as well as a method of surgically fastening bone fragments.
    • 用于愈合骨折骨折的可折叠骨螺钉包括外螺纹内螺纹构件和外螺纹外螺纹构件。 内螺纹构件最初拧入内骨部分。 外螺纹构件的无螺纹部分可移动地连接到内螺纹构件。 外螺纹部件被拧紧直到其在外骨部分中获得购买。 随着随着时间的推移发生冲击,当两个螺钉构件滑动,望远镜或以其它方式轴向移动以缩短整个长度时,可折叠骨螺钉装置的长度可缩短,从而防止螺钉装置的任何部分从骨中突出 。 提供了多个内螺纹和外螺纹构件的骨螺钉套件以及手术紧固骨碎片的方法。