INTERVERTEBRAL DISC PROSTHESIS
    3.
    发明申请
    INTERVERTEBRAL DISC PROSTHESIS 审中-公开
    椎间盘突出症

    公开(公告)号:US20120035731A1

    公开(公告)日:2012-02-09

    申请号:US13202120

    申请日:2010-02-15

    IPC分类号: A61F2/44

    摘要: The invention relates to an intervertebral disc prosthesis (2) that comprises first and second rigid half-envelopes (3, 4) in the form of plates, each intended to be secured to one of the two vertebrae adjacent to the intervertebral disc to be replaced. The first half-envelope (3) includes a central tubular part (5) oriented towards the second half-envelope, while the second half-envelope (4) includes a central stud (6) having a cross-section smaller than that of the tubular part, said stud being oriented towards the first half-envelope and inserted in the tubular part. According to the invention, the intervertebral disc prosthesis further comprises a compression pad (7) disposed between the two half-envelopes, including in the space between the tubular part and the stud. The compression pad (7) comprises a central portion (8) extending between the central areas of the first and second half-envelopes (3, 4), and a plurality of branches (9, 10) extending perpendicularly from the central portion (8) and angularly offset relative to each other.

    摘要翻译: 本发明涉及一种椎间盘假体(2),其包括呈板状形式的第一和第二刚性半包络体(3,4),每个半圆形假体均被固定到邻近待更换的椎间盘的两个椎骨中的一个椎骨 。 第一半封套(3)包括朝向第二半封套定向的中心管状部件(5),而第二半封套(4)包括中心螺柱(6),该中心螺柱的横截面小于 所述螺柱朝向所述第一半封套定向并插入所述管状部件中。 根据本发明,椎间盘假体还包括设置在两个半封套之间的压缩垫(7),包括在管状部分和螺柱之间的空间中。 压缩垫(7)包括在第一和第二半信封(3,4)的中心区域之间延伸的中心部分(8)和从中心部分(8)垂直延伸的多个分支(9,10) )并且相对于彼此成角度地偏移。