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    Proximal femoral sleeve for a revision hip prosthesis
    1.
    发明授权
    Proximal femoral sleeve for a revision hip prosthesis 失效
    用于修复髋关节假体的近端股骨套

    公开(公告)号：US6139584A

    公开(公告)日：2000-10-31

    申请号：US219583

    申请日：1998-12-22

    申请人： Jorge A. Ochoa ,  Farid Bruce Khalili

    发明人： Jorge A. Ochoa ,  Farid Bruce Khalili

    IPC分类号： A61B17/58 ,  A61B17/16 ,  A61F2/30 ,  A61F2/32 ,  A61F2/36

    CPC分类号： A61B17/1668 ,  A61F2/30734 ,  A61F2/30767 ,  A61F2/36 ,  A61F2/367 ,  A61F2002/3069 ,  A61F2002/30738 ,  A61F2002/3611 ,  A61F2002/365

    摘要： A sleeve component for engagement with a prosthetic component, such as a revision femoral component, compensates for bone loss and/or anatomical anomalies. In one embodiment, the sleeve includes a compensating region which provides an eccentric outer surface for offsetting proximal, posterior bone loss in the patient's femur. The sleeve has a bore through which the stem of a femoral component is insertable. The inner walls of the bore taper so as to complement a proximal outer surface of the stem when the sleeve abuts a shoulder portion of the femoral component. In one embodiment, the compensating region is defined by a radius which is offset from the longitudinal axis of the sleeve. In another embodiment, the compensating region is defined by a radius extending from the longitudinal axis and having an increased length.

    摘要翻译： 用于与诸如修正股骨组件的假体部件接合的套筒部件补偿骨丢失和/或解剖异常。 在一个实施例中，套筒包括补偿区域，该补偿区域提供偏心外表面以抵消患者股骨中的近端后骨损失。 套筒具有一个可以插入股骨部件的杆的孔。 当所述套筒邻接所述股骨部件的肩部时，所述孔的内壁逐渐变细，以补充所述杆的近端外表面。 在一个实施例中，补偿区域由与套筒的纵向轴线偏移的半径限定。 在另一个实施例中，补偿区域由从纵向轴线延伸并且具有增加的长度的半径限定。

    Directional bone fixation device
    3.
    发明授权
    Directional bone fixation device 失效

    公开(公告)号：US5716358A

    公开(公告)日：1998-02-10

    申请号：US348607

    申请日：1994-12-02

    申请人： Jorge A. Ochoa ,  Laurel Rogers

    发明人： Jorge A. Ochoa ,  Laurel Rogers

    IPC分类号： A61B17/58 ,  A61B17/00 ,  A61B17/68 ,  A61B17/72 ,  A61B17/86 ,  A61F2/00 ,  A61F2/30

    CPC分类号： A61B17/68 ,  A61B17/72 ,  A61B17/8625 ,  A61B17/869 ,  A61B2017/00858 ,  A61B2017/8655 ,  A61F2/0077 ,  A61F2/30767 ,  A61F2002/30836 ,  A61F2002/30838

    摘要： A bone fixation device such as a screw, pin, staple, cable or anchor has a microtextured contact surface to enhance installation or gripping characteristics, preferably by providing directional or anisotropic engagement. A surface texture comprised of patterned microfeatures imparts a roughness or actual mechanical engagement that prevents loosening. In different embodiments the features resemble an array of microbumps or pyramids, or anisotropic features such as rasp teeth, shingles, or slanted cantilevered fiber/rods. The use of microbumps present a smaller surface area when moving, while providing full area contact after the surfaces have relaxed or decompressed; installation may be effected with low force, while high static or resting friction prevents disengagement. Features with directional asymmetry or angled suspension allow the textured surface to slide or deflect when the fixation device moves in one direction, while presenting a high resistance to torque or linear motion when moved in the other direction. Manufacturing is achieved with ion beams or directional treatment with energetic radiation, and regular arrays of the microfeatures may be produced as stationary surface growth phenomena without the use of pattern masks or mechanical contact. One manufacturing apparatus rotates the fixation device about a longitudinal axis while it is irradiated along an oblique axis. A bone pin may have centrally-directed spurs that allow a multi-segment fracture to be securely pinned without threading. An elastic fastener body such as a screw or pin can be pre-tensioned to place the bone under a torsional or compressive load, or introduce strain at the healing site.

    Knee joint prosthesis
    6.
    发明授权
    Knee joint prosthesis 失效
    膝关节假体

    公开(公告)号：US5609643A

    公开(公告)日：1997-03-11

    申请号：US404195

    申请日：1995-03-13

    申请人： Dennis P. Colleran ,  Robert E. Sommerich ,  Jorge A. Ochoa

    发明人： Dennis P. Colleran ,  Robert E. Sommerich ,  Jorge A. Ochoa

    IPC分类号： A61F2/00 ,  A61F2/30 ,  A61F2/38

    CPC分类号： A61F2/38 ,  A61F2002/30616 ,  A61F2002/30878 ,  A61F2310/00017 ,  A61F2310/00023 ,  A61F2310/00029 ,  A61F2310/00179

    摘要： A knee joint prosthesis includes a femoral component, a tibial plateau and a tibial bearing member. The design and geometry of the articulation surfaces of the condylar elements of the femoral component and tibial bearing member is such that contact area between the articulation surfaces is maximized both in perfect alignment and in malalignment conditions. Moreover, contact stresses placed upon the articulation surfaces in perfect alignment and in malalignment are reduced. High contact area and low contact stress on the articulation surfaces can be maintained even while matching knee prosthesis components of different sizes.

    摘要翻译： 膝关节假体包括股骨部件，胫骨平台和胫骨承载部件。 股骨组件和胫骨承载构件的髁元件的关节表面的设计和几何形状使得关节表面之间的接触面积在完全对准和非对准条件下都最大化。 此外，降低了以完美对准和不对准的方式放置在关节表面上的接触应力。 即使在匹配不同尺寸的膝关节假体部件的同时，也可以保持铰接面上的高接触面积和低接触应力。