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    • 3. 发明授权
    • Hip-joint prosthesis
    • 髋关节假体
    • US3891997A
    • 1975-07-01
    • US44984174
    • 1974-03-11
    • HERBERT JEAN JULES MARIE ERNES
    • HERBERT JEAN JULES MARIE ERNES
    • A61B19/00A61F2/00A61F2/30A61F2/32A61F2/34A61F1/24
    • A61F2/32A61B90/39A61F2002/3008A61F2002/30248A61F2002/3082A61F2002/3266A61F2002/344A61F2002/3459A61F2230/0071A61F2250/0098
    • A prosthetic hip joint comprises a femoral element formed with a ball head and a stem projecting from the head and adapted to be received within the upper end of a femur, and a generally hemispherical socket element adapted to be secured in the ilium at the acetabulum thereof and having an inner surface formed as a generally hemispherical cavity adapted to snugly receive the ball head. The outer surface of the socket element is subdivided at a step into a lower quarter-spherical region having a center of curvature lying above the center of curvature of the ballreceiving cavity, and an upper quarter-spherical region adjoining the lower region and having a center of curvature coinciding with the center of curvature of the ball-receiving cavity. The step between the two quarter-cylindrical regions is formed with a chamfer and both of these regions are formed with a plurality of criss-crossing grooves, in at least one of which is received a metal wire allowing the synthetic-resin socket element to be viewed in an X-ray. The ball head of the femoral element is formed with a neck that is tapered into the stem and forms a pair of shoulders thereon.
    • 假体髋关节包括由球头形成的股骨元件和从头部突出并且适于容纳在股骨的上端内的杆,以及适于被固定在髋臼处的髂骨中的大致半球形的插座元件 并且具有形成为适于紧贴地接收球头的大致半球形腔的内表面。 插座元件的外表面在一个阶段被细分成具有位于球接收腔的曲率中心之上的曲率中心的下四分之一球形区域,以及与下部区域相邻的上部四分之一球形区域,并且具有 曲率中心与球接收腔的曲率中心重合。 两个四分之一圆柱形区域之间的台阶形成有倒角,并且这两个区域都形成有多个交叉交叉的槽,其中至少一个容纳金属线,使合成树脂插座元件为 在X光检查。 股骨元件的球头形成有颈部,该颈部被锥形地插入杆中并在其上形成一对肩部。