Modular hip prosthesis
    3.
    发明授权
    Modular hip prosthesis 失效
    模块化髋关节假体

    公开(公告)号:US4995883A

    公开(公告)日:1991-02-26

    申请号:US308205

    申请日:1989-02-08

    Abstract: A modular hip prosthesis can be custom fitted to a particular patient by a surgeon prior to surgical insertion. The prosthesis features a body having a neck portion for carrying a rounded head element, a transitional mid-section of the prosthesis body includes generally rectangular and generally rounded cross-sectional areas, and a stem section has a generally rounded cross-sectional area. The stem is tapered to receive a tubular extension sleeve with a hollowed portion corresponding in shape to the stem portion of the prosthesis. The tubular extension sleeve has an open end portion receptive of the lower tapering stem of the prosthesis body. The stem portion including an internal bore, and an attachment in the form of an elongated screw is provided for connection to the stem internal bore for securing the extension sleeve and the prosthesis body together, forming a compressive sealed connection therebetween. Pads can be attached to the transitional mid-section of the prosthesis body for increasing the cross-sectional shape of the prosthesis at the transitional mid-section. Removable collars can be added to the prosthesis to form a transverse load carrying interface with the upper end of the patient's femur. Frustro-conically shaped extension sleeves can be added to the prosthesis neck for extending the neck length.

    Abstract translation: 在手术插入之前,外科医生可以将模块化的髋关节假体定制到特定的患者身上。 假体具有主体,该主体具有用于承载圆形头部元件的颈部部分,假体主体的过渡中段包括大致矩形且大致圆形的横截面区域,并且杆部分具有大致圆形的横截面积。 杆是锥形的,以容纳具有中空部分的管状延伸套筒,该中空部分的形状对应于假体的茎部分。 管状延伸套管具有容纳假体的下锥形柄部的开口端部分。 提供包括内孔的杆部分和细长螺钉形式的附件,用于连接到杆内孔,用于将延伸套筒和假体固定在一起,在其间形成压缩密封连接。 垫可以附接到假体的过渡中段以增加在过渡中段的假体的横截面形状。 可拆卸的套环可以添加到假体以形成与患者股骨的上端的横向承载界面。 锥形圆锥形延伸套管可以添加到假体颈部以延长颈部长度。

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