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    • 8. 发明授权
    • Metacarpal-phalangeal joint replacement
    • 掌骨指骨关节置换术
    • US6159247A
    • 2000-12-12
    • US297645
    • 1999-05-04
    • Jerome J. KlawitterWilliam F. Ogilvie
    • Jerome J. KlawitterWilliam F. Ogilvie
    • A61F2/00A61F2/30A61F2/42A61F2/46
    • A61F2/4241A61F2/30767A61F2/30965A61F2002/30125A61F2002/30158A61F2002/30616A61F2002/30649A61F2002/30652A61F2002/30673A61F2002/30688A61F2002/30706A61F2002/3082A61F2002/30934A61F2002/4251A61F2002/4631A61F2230/0008A61F2230/0026A61F2250/0082A61F2310/00173A61F2310/00574A61F2310/00796
    • A joint prosthesis for replacement of the metacarpal-phalangeal (MP) joint (19) of a human finger which includes a metacarpal element (13) with a stem (15) for reception into the medullary cavity of the metacarpal bone (11) and a generally ball-shaped articular head (17) and a phalangeal element (14) with a stem (16) for reception into the medullary cavity of the proximal phalangeal bone (12) and a generally socket-shaped head (18) which conforms to the ball-shaped head (17). The metacarpal element (13)'s articular head (17) has reliefs (51,52) located on each of its two lateral sides so as to provide a generally free path for the collateral ligaments (43,44). The phalangeal element (14)'s articular head (18) has a dorsal protrusion (71) that resists subluxation-dislocation of the phalangeal bone (12) and grooves (31,32) in its concave surface (22) which allow biological fluids access to the inner regions of the articulation contact surfaces (21,22). The proximal face of the head (18) may be tangent to a plane (P), or the face of the head (118) may be tangent to a cylinder of circular cross section to provide greater capture and joint stability.
    • PCT No.PCT / US97 / 19894 Sec。 371日期1999年5月4日 102(e)日期1999年5月4日PCT 1997年11月3日PCT公布。 公开号WO98 / 19637 日期1998年5月14日一种用于替代人指的掌骨指趾(MP)关节(19)的关节假体,其包括掌骨元件(13),其具有杆(15),用于接收到掌骨的髓腔中 11)和具有杆(16)的一般球形关节头(17)和指骨元件(14),用于接收到近端指骨骨(12)的髓腔和大致插座形状的头部(18) 其符合球形头部(17)。 掌骨元件(13)的关节头部(17)具有位于其两个侧面中的每一侧上的浮雕(51,52),以便为副韧带(43,44)提供通用的自由路径。 趾骨元件(14)的关节头部(18)具有背部突起(71),其抵抗趾骨(12)的半脱位和脱位,并且在其凹面(22)中的凹槽(31,32),其允许生物流体 进入关节接触表面(21,22)的内部区域。 头部(18)的近侧面可以与平面(P)相切,或者头部(118)的表面可以与圆形横截面的圆柱相切,以提供更大的捕获和关节稳定性。