Top-tightening transverse connector for a spinal fixation system
    21.
    发明授权
    Top-tightening transverse connector for a spinal fixation system 失效
    用于脊柱固定系统的顶部紧固横向连接器

    公开(公告)号:US5980521A

    公开(公告)日:1999-11-09

    申请号:US859762

    申请日:1997-05-21

    IPC分类号: A61B17/70

    摘要: A new top-loading transverse connector of the present invention for bridging between longitudinal members of a spinal fixation system implant. The transverse connector is loaded and clamped to the longitudinal member from the top permitting easy access and adjustment and may clamp at the same location along the rod as a vertebral fixation element. The transverse connector comprises an elongate body and an engagement portion on each opposing end of the elongate body. The engagement portion includes downward legs each with a surface to engage the longitudinal member. The downward legs are displaced from each other to define a space therebetween. The engagement portion includes an upper surface defining an opening therethrough. The opening intersects the space defined between the downward legs. Together, the space and opening are configured to receive the clamp assembly carried on the longitudinal member. Another object of the invention, is to provide an improved system including the transverse connector. Another object of the invention is to provide a transverse connector that clamps to the longitudinal member at a variable angle. Another object of the invention is to provide a separate engagement portion which can be used with existing transverse connectors to permit clamping at the same site as vertebral fixation elements. Another object of the invention is to provide a way to adjust the length of the elongate body of the transverse connector.

    摘要翻译: 一种用于桥接脊柱固定系统植入物的纵向构件之间的本发明的新的顶部加载横向连接器。 横向连接器从顶部装载和夹紧到纵向构件,允许容易地进入和调节,并且可以沿着杆作为椎骨固定元件夹紧在相同位置。 横向连接器包括细长主体和在细长主体的每个相对端上的接合部分。 接合部分包括各自具有与纵向构件接合的表面的向下的腿。 向下的腿彼此移位以限定它们之间的空间。 接合部分包括限定穿过其中的开口的上表面。 开口与下方的腿间限定的空间相交。 一起,空间和开口构造成接收承载在纵向构件上的夹具组件。 本发明的另一个目的是提供一种包括横向连接器的改进的系统。 本发明的另一个目的是提供一种以可变角度夹紧纵向构件的横向连接器。 本发明的另一个目的是提供一种单独的接合部分,其可以与现有的横向连接器一起使用以允许在与椎骨固定元件相同的位置处夹紧。 本发明的另一个目的是提供一种调节横向连接器的细长主体长度的方法。

    Template for positioning interbody fusion devices
    22.
    发明授权
    Template for positioning interbody fusion devices 失效
    定位体内融合装置模板

    公开(公告)号:US5785707A

    公开(公告)日:1998-07-28

    申请号:US889473

    申请日:1997-07-08

    摘要: A template assembly is provided for marking locations on the disc annulus for the implantation of an interbody fusion device or the introduction of a working instrument. The template assembly includes a tubular body sized for percutaneous introduction into a patient and advancement to an affected intervertebral disc. An elongated shaft slidably extends through the tubular body and is threadedly engaged to the tubular body at its proximal end so that rotation of the shaft relative to the tubular body advances the shaft through the body. A guide foot is pivotably connected to the distal end of the tubular body to be pivoted from a first position aligned with the tubular body to a second deployed position oriented substantially perpendicular to the tubular body. The guide body is pivoted from the first position to the second position by advancement of the elongated shaft through the tubular body. The guide body in one embodiment defines a bore through which the working tip of an electrocautery instrument extends to mark the disc annulus. In another embodiment, the guide body itself defines an electrocautery projection. The template assembly can be anchored to the affected disc by a guide wire extending through the tubular body and about which the template assembly can be rotated to make an additional mark on the annulus at a predetermined distance from the first mark.

    摘要翻译: 提供了一种模板组件,用于标记椎间盘环上的位置,用于植入体内融合装置或引入工作器械。 模板组件包括尺寸适于经皮引入患者体内并进入受影响的椎间盘的管状体。 细长轴可滑动地延伸穿过管状体并且在其近端处与管状体螺纹接合,使得轴相对于管状体的旋转使轴穿过身体。 引导脚可枢转地连接到管状体的远端,以从与管状体对准的第一位置枢转到基本上垂直于管状体定向的第二展开位置。 引导体通过细长轴通过管状物体的前进从第一位置枢转到第二位置。 在一个实施例中,引导体限定了一个孔,电烙器的工作尖端穿过该孔延伸以标记盘环。 在另一个实施例中,引导体本身限定电烙术投影。 模板组件可以通过延伸穿过管状体的导丝锚固到受影响的椎间盘,并且模板组件可围绕该导丝线旋转以在距第一标记预定距离处在环形上形成附加标记。