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    MENISCAL BEARING PLATFORM AND BEARINGS FOR JOINT ENDOPROSTHESIS
    1.
    发明公开
    MENISCAL BEARING PLATFORM AND BEARINGS FOR JOINT ENDOPROSTHESIS 失效
    半月板支护平台及支架术

    公开(公告)号：EP1011542A4

    公开(公告)日：2003-01-02

    申请号：EP98931344

    申请日：1998-06-17

    申请人： PAPPAS MICHAEL J ,  BUECHEL FREDERICK F

    发明人： PAPPAS MICHAEL J ,  BUECHEL FREDERICK F

    IPC分类号： A61F2/38

    CPC分类号： A61F2/3868

    摘要： A prosthetic joint is provided including a meniscal bearing platform (10), bearing components (26, 28), and a femoral component (50). The tibial platform (10) is formed to allow for sliding movement of the bearing components (26, 28) thereabout. The movement of the bearing components (26, 28) is constrained to a predetermined path of movement by the combination of a raised portion (16) extending from the tibial platform (10), as well as lateral constraint provided by the femoral component (50).

    ANTERIOR-POSTERIOR FEMORAL RESECTION GUIDE WITH SET OF DETACHABLE COLLETS
    2.
    发明公开
    ANTERIOR-POSTERIOR FEMORAL RESECTION GUIDE WITH SET OF DETACHABLE COLLETS 有权
    导向装置用于前后股切除可拆卸袖子跨度的SET

    公开(公告)号：EP1032319A1

    公开(公告)日：2000-09-06

    申请号：EP98959490.8

    申请日：1998-11-18

    申请人： Pappas, Michael J.

    发明人： Pappas, Michael J.

    IPC分类号： A61B17/56

    CPC分类号： A61B17/1764 ,  A61B17/155 ,  A61B17/157

    摘要： A set of instruments (10) is provided for use in the preparation of a natural bone of a condylar joint for receiving prosthetic components both in primary and revision surgery. To illustrate the invention and use thereof, reference is made to the preparation of a natural femur (F) in a knee joint. The set of instruments (10) includes an anterior-posterior femoral resection guide (12) having a guide aperture (36) formed therethrough, and a set of collets (14; 16; 18A; 18B) formed to detachably mount to the guide aperture (36). The set of collets (14; 16; 18A; 18B) includes a drill guide (14), a reamer sleeve (16), and a plurality of different size reamer bushings (18A; 18B). Accordingly, the drill guide (14) can be mounted to the anterior-posterior femoral resection guide (12) to provide guidance in the drilling of a channel (87) into the distal end of a femur (F), and, alternatively, the combination of the reamer sleeve (16) and the reamer bushings (18A; 18B) can be used to provide guidance in reaming a channel into the distal end of a femur (F). As an additional feature, a tibial template (98) is also provided which can be cooperatively used with the reamer sleeve (16) and reamer bushings (18A; 18B) to prepare a channel into a natural tibia (T).

    Prosthetic knee joint with enhanced posterior stabilization and dislocation prevention features
    3.
    发明公开
    Prosthetic knee joint with enhanced posterior stabilization and dislocation prevention features 有权
    人工膝关节具有增强的后部稳定性和脱位预防功能

    公开(公告)号：EP0916321A3

    公开(公告)日：1999-07-21

    申请号：EP98121540.3

    申请日：1998-11-17

    申请人： Pappas, Michael J.

    发明人： Pappas, Michael J.

    IPC分类号： A61F2/38

    CPC分类号： A61F2/3886 ,  A61F2/3868 ,  A61F2002/30342 ,  A61F2220/0033

    摘要： The prosthetic knee joint is provided for resisting valgus-varus movements. The joint includes a femoral component having a superior bone engaging surface and an inferior bearing surface. A posterior notch extends anteriorly into the posterior end of the femoral component. The prosthetic knee joint further includes a tibial component having an inferior bone engaging surface and a superior bearing surface. A plastic bearing is disposed between the femoral and tibial components. An inferior surface of the plastic bearing is in bearing engagement with the superior surface of the tibial component. A superior bearing surface of the plastic bearing is in articular bearing engagement with the bearing surface of the femoral component. The bearing includes a post projecting proximally from the superior surface. The post is slidably received in the posterior notch of the femoral component and resists valgus-varus moments imposed upon the joint. The post may include medial and lateral cam projections spaced from the superior bearing surface of the bearing. The femoral component may include flanges at the posterior notch for engagement between the cam projections and the superior bearing surface to substantially prevent dislocation.

    摘要翻译： 假肢膝关节用于抵抗外翻内翻运动。 该关节包括具有上骨接合表面和下支承表面的股骨部件。 后缺口向前延伸到股骨组件的后端。 假肢膝关节还包括具有下骨接合表面和上支承表面的胫骨部件。 塑料轴承设置在股骨和胫骨部件之间。 塑料轴承的下表面与胫骨部件的上表面轴承接合。 塑料轴承的优越支承表面与股骨部件的支承表面处于关节轴承接合。 轴承包括从上表面向近侧突出的柱。 该柱可滑动地容纳在股骨组件的后部凹槽中并且抵抗施加在关节上的外翻 - 内翻力矩。 柱可包括与轴承的上支承表面间隔开的内侧和外侧凸轮突起。 股骨部件可以包括位于后部凹口处的凸缘，用于凸轮突起和上支承表面之间的接合以基本上防止错位。

    Prosthetic knee joint with enhanced posterior stabilization and dislocation prevention features
    4.
    发明公开
    Prosthetic knee joint with enhanced posterior stabilization and dislocation prevention features 有权
    与改进后的稳定性和措施，以防止错位Kniegelenkendprothese

    公开(公告)号：EP0916321A2

    公开(公告)日：1999-05-19

    申请号：EP98121540.3

    申请日：1998-11-17

    申请人： Pappas, Michael J.

    发明人： Pappas, Michael J.

    IPC分类号： A61F2/38

    CPC分类号： A61F2/3886 ,  A61F2/3868 ,  A61F2002/30342 ,  A61F2220/0033

    摘要： The prosthetic knee joint is provided for resisting valgus-varus movements. The joint includes a femoral component having a superior bone engaging surface and an inferior bearing surface. A posterior notch extends anteriorly into the posterior end of the femoral component. The prosthetic knee joint further includes a tibial component having an inferior bone engaging surface and a superior bearing surface. A plastic bearing is disposed between the femoral and tibial components. An inferior surface of the plastic bearing is in bearing engagement with the superior surface of the tibial component. A superior bearing surface of the plastic bearing is in articular bearing engagement with the bearing surface of the femoral component. The bearing includes a post projecting proximally from the superior surface. The post is slidably received in the posterior notch of the femoral component and resists valgus-varus moments imposed upon the joint. The post may include medial and lateral cam projections spaced from the superior bearing surface of the bearing. The femoral component may include flanges at the posterior notch for engagement between the cam projections and the superior bearing surface to substantially prevent dislocation.

    摘要翻译： 假肢膝关节被设置用于抵抗外翻内翻运动。 所述接头包括具有优异的骨接合表面和在下支承表面的股骨组件。 甲后侧凹口向前延伸到所述股骨组件的后端。 假肢膝关节还包括具有在下骨接合表面和一个上支承表面的胫骨组件。 一个塑料轴承股骨和胫骨部件之间设置。 塑料轴承的下表面是轴承接合胫骨部件的上表面。 塑料轴承的上支承表面与所述股骨部件的所述支承表面的关节轴承接合。 该轴承包括一个后从所述上表面朝近侧突出。 所述柱在所述股骨部件的后切口可滑动地容纳并抵抗在所述关节施加外翻内翻力矩。 柱可以包括从所述轴承的所述上支承表面间隔开的内侧和外侧凸轮凸起。 股骨部件可以包括在后侧凹口为凸轮突起和上支承面，以基本防止错位之间的接合凸缘。

    Femoral component for knee endoprosthesis
    7.
    发明公开
    Femoral component for knee endoprosthesis 有权
    膝关节假体的股骨构件

    公开(公告)号：EP0993812A3

    公开(公告)日：2002-06-05

    申请号：EP99102238.5

    申请日：1999-02-04

    申请人： Pappas, Michael J.

    发明人： Pappas, Michael J.

    IPC分类号： A61F2/38

    CPC分类号： A61F2/38 ,  A61F2/3877 ,  A61F2002/30878

    摘要： A femoral component of a knee prosthesis includes a bearing surface defined by a smooth, continuous surface which in one embodiment is entirely formed by a series of three segments of surfaces of revolution, the respective shapes of which are generated by rotating a common generating curve around three separate generating axes at respective pairs of major generating radii and through respective angles of rotation. The central segment of the surfaces of revolution constantly maintains the substantially same contact configuration with the superior bearing surface of a bearing insert over a range extending from full extension (0° of flexion) to at least 45° of flexion and up to 105° of flexion. The maintenance of the substantially same contact configuration ensures area, point or line contact between the articulating surfaces which reduces contact stress and wear in flexion. In a second embodiment, the bearing surface is defined by four segments of surfaces of revolution shaped for implantation in a knee where one or both cruciate ligaments are retained.

    Spacer for establishing prosthetic gap and ligamentous tension
    8.
    发明公开
    Spacer for establishing prosthetic gap and ligamentous tension 失效
    Abstshalter zum Herstellen von Prothesenspalt和Sehnenspannung

    公开(公告)号：EP0754439A2

    公开(公告)日：1997-01-22

    申请号：EP96110851.1

    申请日：1996-07-04

    申请人： Pappas, Michael J.

    发明人： Pappas, Michael J.

    IPC分类号： A61F2/38 ,  A61F2/46 ,  A61B17/15

    CPC分类号： A61B17/154 ,  A61B17/155 ,  A61B17/157 ,  A61F2/08 ,  A61F2/38 ,  A61F2/4684 ,  A61F2002/30616 ,  Y10S623/908

    摘要： A system of templates is provided for use during implantation of a prosthetic joint. The templates are of different surface areas and different thicknesses. The templates are first used to enable selection of a prosthetic component corresponding to the shape of a resected bone into which the prosthetic component will be implanted. The templates are then used to establish an appropriate prosthetic gap for the selected prosthetic component. The prosthetic gap will vary in accordance with the selected prosthetic component.

    摘要翻译： 提供了一种模板系统，用于在植入假体关节期间使用。 模板具有不同的表面积和不同的厚度。 模板首先用于使得能够选择对应于待植入假肢部件的被切除的骨的形状的假体部件。 然后使用模板来为所选择的假体组件建立适当的假肢间隙。 假体间隙将根据所选择的假体组件而变化。