Intervertebral prosthetic disc and method of installing same
    88.
    发明申请
    Intervertebral prosthetic disc and method of installing same 审中-公开
    椎间盘假体及其安装方法

    公开(公告)号:US20070173941A1

    公开(公告)日:2007-07-26

    申请号:US11339308

    申请日:2006-01-25

    申请人: Randall Allard

    发明人: Randall Allard

    IPC分类号: A61F2/44

    摘要: An intervertebral prosthetic disc that is configured to be installed within an intervertebral space that can be established between an inferior vertebra and a superior vertebra is disclosed. The intervertebral prosthetic disc includes an inferior articular half that can be configured to engage the inferior vertebra and a superior articular half that can be configured to engage the superior vertebra. The inferior articular half can be configured to cooperate with the superior articular half to allow relative angular motion between the inferior vertebra and the superior vertebra when installed. Further, the intervertebral prosthetic device can be sized and shaped to pass through a psoas muscle without injuring a spinal cord or a sympathetic chain.

    摘要翻译: 公开了一种被配置为安装在可以在下椎骨和上脊椎之间建立的椎间空间内的椎间假体盘。 椎间假体盘包括下关节半部,其可被配置为接合下椎骨,以及可被配置为接合上椎骨的上关节半部。 下关节半部可以被配置为与上关节半部配合,以允许在安装后的下椎骨和上椎骨之间的相对角运动。 此外,椎间假体装置的尺寸和形状可以通过腰肌而不损伤脊髓或交感神经链。

    Intervertebral disc prosthesis and associated methods
    90.
    发明申请
    Intervertebral disc prosthesis and associated methods 审中-公开
    椎间盘假体及相关方法

    公开(公告)号:US20060293752A1

    公开(公告)日:2006-12-28

    申请号:US11167709

    申请日:2005-06-27

    IPC分类号: A61F2/44

    摘要: An intervertebral disc prosthesis comprises a first plate designed for attachment to an upper vertebra and a second plate designed for attachment to a lower vertebra. A prosthesis core is positioned between the first plate and the second plate. At least one spring is connected between the first plate and the second plate. The spring comprises a U-shaped torsion bar including a first leg and a second leg. The first leg of the U-shaped torsion spring is attached to the first plate and the second leg is attached to the second plate. The spring provides a selected amount of resistance to movement of the first plate relative to the second plate. In one embodiment, the selected resistance is provided by the attachment locations of the spring to the plates. In another embodiment, the selected resistance is provided by a predetermined spring rate of the springs of the prosthesis.

    摘要翻译: 椎间盘假体包括设计用于附接到上椎骨的第一板和设计用于附接到下椎骨的第二板。 假体芯位于第一板和第二板之间。 至少一个弹簧连接在第一板和第二板之间。 弹簧包括包括第一腿部和第二腿部的U形扭力杆。 U形扭转弹簧的第一腿被附接到第一板,第二腿连接到第二板。 弹簧提供了选定量的第一板相对于第二板的运动的阻力。 在一个实施例中,所选择的阻力由弹簧到板的附接位置提供。 在另一个实施例中,所选择的阻力由假体的弹簧的预定弹簧刚度提供。