JOINT PROSTHESIS
    5.
    发明申请
    JOINT PROSTHESIS 审中-公开
    联合PROSTHESIS

    公开(公告)号:WO1998014140A1

    公开(公告)日:1998-04-09

    申请号:PCT/NL1997000553

    申请日:1997-10-06

    Abstract: The invention relates to a joint prosthesis (1) comprising two metal parts which are movable with respect to one another. The surfaces of the metal parts are covered with an abrasion layer (10, 10') of ceramic material which has a hardness which is greater than that of the carbides (7, 7') present in the metal. The carbides (7, 7') are worn away by the abrasion layer (10, 10'). As a result, the overall wear behaviour of the two metal parts of the prosthesis (1) is improved considerably, and the metal surface of the prosthesis parts is not affected by the carbides (7, 7') during movement. The metal components are preferably spaced apart from one another at a distance (d) of at most 0.2 millimeter. This close fit improves the wear action. Owing to the relatively thin wear layer (10, 10'), the particles formed during the wearing process are small enough to be discharged into the space between the joint parts by synovial fluid.

    Abstract translation: 本发明涉及一种包括可相对于彼此移动的两个金属部件的关节假体(1)。 金属部件的表面被陶瓷材料的磨损层(10,10')覆盖,该陶瓷材料的硬度大于存在于金属中的碳化物(7,7')的硬度。 碳化物(7,7')被磨损层(10,10')磨损。 结果,假体(1)的两个金属部件的总体磨损行为得到显着改善,并且假体部件的金属表面在运动期间不受碳化物(7,7')的影响。 金属部件优选彼此间距离(d)至多0.2毫米。 这种紧密配合可以改善磨损作用。 由于相对薄的耐磨层(10,10'),在磨损过程中形成的颗粒足够小以便通过滑液排出到接合部之间的空间中。

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