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

    IPC分类号: A61B17/58

    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。