Prosthesis
    39.
    发明申请
    Prosthesis 有权
    假体

    公开(公告)号:US20020055785A1

    公开(公告)日:2002-05-09

    申请号:US10003647

    申请日:2001-11-02

    发明人: David Harris

    IPC分类号: A61F002/42

    摘要: A prosthesis (1) for a metacarpophalangeal joint comprises a metacarpal plug member (2), a metacarpal insert member (3), and a phalangeal insert member (4). The metacarpal plug member (2) comprises an elongate body (5) which generally tapers from a proximal end (7) to a distal end (8), which has a central longitudinal axis (6), an axial bore (13), and a plurality of axially spaced first fins (9, 10, 11, 12) projecting from the elongate body (5) in a direction substantially perpendicular to the central longitudinal axis (6). The metacarpal insert member (3) comprising a head portion (15) having a convex articulating surface (17) and a stem portion (16) projecting distally from the head portion (15) for reception in the proximal end of the axial bore (6). The phalangeal insert member (4) comprises an enlarged proximal end portion (19) and an elongate shaft portion (21) that extends distally from the enlarged proximal end portion (19). The enlarged end portion (19) is provided with a concave articulating surface (20) substantially congruent with the convex articulating surface (17) of the metacarpal insert member (3), and the elongate shaft portion has a longitudinal axis (22), tapers generally towards a distal end of the phalangeal insert member (4), and is provided with a plurality of axially spaced second fins (23, 24, 25) projecting therefrom in a direction substantially perpendicular to the longitudinal axis (22).

    摘要翻译: 用于掌指关节的假体(1)包括掌骨栓构件(2),掌骨插入构件(3)和趾骨插入构件(4)。 掌骨塞构件(2)包括从近端(7)到远端(8)大致渐缩的细长主体(5),其具有中心纵向轴线(6),轴向孔(13)和 多个沿着基本上垂直于中心纵向轴线(6)的方向从细长体(5)突出的轴向隔开的第一翅片(9,10,11,12)。 所述掌骨插入构件(3)包括具有凸形铰接表面(17)的头部(15)和从所述头部(15)向远侧突出以用于在所述轴向孔(6)的近端中接收的杆部分 )。 趾骨插入件(4)包括从扩大的近端部分(19)向远端延伸的扩大的近端部分(19)和细长的轴部分(21)。 扩大的端部(19)设置有基本上与掌骨插入构件(3)的凸形铰接表面(17)一致的凹形铰接表面(20),并且细长轴部分具有纵向轴线(22),锥形 通常朝向指牙插入构件(4)的远端,并且设置有多个沿着基本上垂直于纵向轴线(22)的方向从其突出的轴向间隔开的第二翅片(23,24,25)。