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    Multi-thread bone screw and method
    1.
    发明申请
    Multi-thread bone screw and method 有权
    多螺纹骨螺钉和方法

    公开(公告)号：US20070233122A1

    公开(公告)日：2007-10-04

    申请号：US11355877

    申请日：2006-02-16

    申请人： Francis Denis ,  Timothy Garvey ,  Joseph Perra ,  Manuel Pinto ,  James Schwender ,  Ensor Transfeldt ,  Michael Veldman ,  William Rezach

    发明人： Francis Denis ,  Timothy Garvey ,  Joseph Perra ,  Manuel Pinto ,  James Schwender ,  Ensor Transfeldt ,  Michael Veldman ,  William Rezach

    IPC分类号： A61B17/58

    CPC分类号： A61B17/863 ,  A61B17/7007 ,  A61B17/701 ,  A61B17/7032 ,  A61B17/7037 ,  A61B17/7038 ,  A61B17/7041 ,  A61B17/7059

    摘要： A bone screw comprising a threaded shank including a distal end portion and a proximal end portion, and defining a first threaded section extending from the distal end portion toward the proximal end portion and adapted for anchoring in cancellous bone, and a second threaded section extending contiguously from the first threaded section toward the proximal end portion and adapted for engagement in cortical bone, with the second threaded section having a finer thread pattern relative to the first threaded section. In one embodiment, the first threaded section includes a first helical threading defining a single lead thread pattern for anchoring in cancellous bone, and the second threaded section includes a second helical threading interleaved with the first threading to define a duel lead thread pattern for engagement in cortical bone. In a further embodiment, the bone screw includes a head portion extending from the threaded shank and configured for coupling to a spinal implant.

    摘要翻译： 一种骨螺钉，其包括螺纹杆，所述螺纹杆包括远端部分和近端部分，并且限定从所述远端部分朝向所述近端部分延伸并适于锚固在松质骨中的第一螺纹部分，以及连续延伸的第二螺纹部分 从所述第一螺纹部分朝向所述近端部分并且适于接合在皮质骨中，其中所述第二螺纹部分相对于所述第一螺纹部分具有更细的螺纹图案。 在一个实施例中，第一螺纹部分包括限定用于锚固在松质骨中的单个引导线图案的第一螺旋螺纹，并且第二螺纹部分包括与第一螺纹交错的第二螺旋螺纹，以限定用于接合的导联螺纹图案 皮质骨。 在另一实施例中，骨螺钉包括从螺纹柄部延伸并被配置为联接到脊柱植入物的头部部分。

    Self-aligning cap nut for use with a spinal rod anchor
    4.
    发明授权
    Self-aligning cap nut for use with a spinal rod anchor 有权
    自动对准盖螺母，用于脊椎杆锚

    公开(公告)号：US06443953B1

    公开(公告)日：2002-09-03

    申请号：US09518961

    申请日：2000-03-06

    申请人： Joseph Perra ,  Rolando Puno ,  Philip A. Mellinger

    发明人： Joseph Perra ,  Rolando Puno ,  Philip A. Mellinger

    IPC分类号： A61B1770

    CPC分类号： A61B17/7037 ,  A61B17/7032

    摘要： A spinal implant system is provided having a stabilization rod, a plurality of bone anchors which could be either hooks or screws and which have an internal recess that defines a rod-receiving channel. Sidewalls of the anchor project beyond the recess, and are threaded on the outside. These external threads cooperate with the internal threads of a locking member, or cap nut, which has a top surface with a cavity that includes an internal hexagon. The internal threads are on the inside of the cylindrical sidewalls of the cap nut. Further, on the bottom side of the top surface, the cap nut has a guide member in the form of a cylindrical boss, which has a smaller diameter than that of the recess within the anchor. The boss helps to prevent cross threading and to prevent collapse of the anchor sidewalls under high forces. An annular ridge on the bottom of the boss further helps to retain the rod relative to the anchor.

    摘要翻译： 提供脊柱植入系统，其具有稳定杆，多个骨锚，其可以是钩或螺钉，并且具有限定杆接收通道的内部凹部。 锚杆的侧壁超出凹槽，并在外面螺纹连接。 这些外螺纹与锁定构件或帽螺母的内螺纹配合，所述内螺纹具有带有内六角形的腔的顶表面。 内螺纹位于盖螺母的圆柱形侧壁的内侧。 此外，在顶表面的底侧上，盖螺母具有圆柱形凸台形式的引导构件，其具有比锚固件内的凹部小的直径。 该凸台有助于防止横向穿线并防止在高强度下锚固侧壁的塌陷。 在凸起的底部上的环形脊部还有助于相对于锚固体保持杆。