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    Spacer implant for substituting missing vertebrae
    4.
    发明授权
    Spacer implant for substituting missing vertebrae 失效
    用于替代缺失椎骨的间隔植入物

    公开(公告)号：US5723013A

    公开(公告)日：1998-03-03

    申请号：US595955

    申请日：1996-02-06

    申请人： Jean-Francois Jeanson ,  Marc Ameil ,  Herve Dinville ,  Jean Huppert ,  Thierry Marnay ,  Michel Gau

    发明人： Jean-Francois Jeanson ,  Marc Ameil ,  Herve Dinville ,  Jean Huppert ,  Thierry Marnay ,  Michel Gau

    IPC分类号： A61B17/56 ,  A61F2/00 ,  A61F2/30 ,  A61F2/44

    CPC分类号： A61F2/44 ,  A61F2/4611 ,  A61F2002/30235 ,  A61F2002/30354 ,  A61F2002/30367 ,  A61F2002/3037 ,  A61F2002/30398 ,  A61F2002/30403 ,  A61F2002/30485 ,  A61F2002/30489 ,  A61F2002/3052 ,  A61F2002/30522 ,  A61F2002/3055 ,  A61F2002/30551 ,  A61F2002/30594 ,  A61F2002/30601 ,  A61F2002/30846 ,  A61F2002/30879 ,  A61F2002/4475 ,  A61F2220/0025 ,  A61F2220/0033 ,  A61F2230/0069

    摘要： An implant for replacing a removed vertebra includes an outer sleeve having a longitudinal axis and a peripheral inner surface. The inner surface has a series of axially adjoining, peripheral grooves lending the inner surface a sawtooth-shaped configuration when viewing the inner sleeve in axial section. The implant further includes an inner sleeve having a longitudinal axis and a peripheral outer surface. The outer surface has a series of axially adjoining, peripheral ribs lending the outer surface a sawtooth-shaped configuration when viewing the inner sleeve in axial section. The inner sleeve is telescopingly received in the outer sleeve such that the series of axially adjoining, peripheral ribs of the outer surface engage into the series of axially adjoining, peripheral grooves of the surface in an interfitting relationship. The sawtooth-shaped configurations of the inner and outer surfaces are oriented such that in normal operation the sleeves are prevented by the interengaging sawtooth configurations from being telescoped into one another, but are allowed by ratchet action to telescope outwardly from one another. The inner sleeve is radially sufficiently resilient to allow alternating radial compression and expansion during the ratchet action.

    摘要翻译： 用于更换移除的椎骨的植入物包括具有纵向轴线和周边内表面的外套筒。 内表面具有一系列轴向邻接的周边凹槽，当沿轴向观察内套筒时，使内表面呈锯齿状。 植入物还包括具有纵向轴线和外围外表面的内套筒。 外表面具有一系列轴向邻接的周边肋，当沿轴向观察内套筒时，使外表面呈锯齿状。 内套筒可伸缩地容纳在外套筒中，使得外表面的一系列轴向相邻的周边肋条以相互配合的关系接合在该表面的一系列轴向邻接的周边凹槽中。 内表面和外表面的锯齿形结构被定向成使得在正常操作中，通过相互啮合的锯齿形状被套入彼此而防止套筒，但是通过棘轮动作允许套筒彼此向外望远镜。 内套筒径向地具有足够的弹性，以允许棘轮动作期间的交替的径向压缩和膨胀。