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专利名称：KNEE JOINT PROSTHESIS AND RELATED
METHOD
发明人：Richter, Berna,Hurschler,
Christof,Ostermeier, Sven
申请号：EP16174470.1申请日：20100709公开号：EP3103416B1公开日：20180321
摘要：The present invention relates to a knee joint prosthesis (1) having: a tibialcomponent (2) and a femoral component (3). The tibial component (2) includes a fixationportion (10) adapted to be fixed to an upper end of a prepared tibia (T) in a patient, and aceramic bearing portion (30) presenting at least one articulation surface (32). The femoralcomponent (3) is adapted to be fixed to a lower end of a prepared femur (F) in a patient,and comprises a ceramic body portion (50) presenting at least one articulation surface(56) for engagement with the respective articulation surface(s) of the tibial component(2). The articulation surfaces (32, 56) of the tibial and femoral components (2, 3) areconfigured for essentially congruent engagement over a full range of movement of theprosthesis, and the bearing portion (30) of the tibial component (2) is adapted formovement relative to the fixation portion (10). The invention also provides a method offinishing articulation surfaces (32, 56) of ceramic components of a knee joint prosthesis,including the steps of combining the ceramic bearing portion (30) and the ceramic bodyportion (50) such that respective articulation surfaces (32, 56) are brought into
engagement with a working substance (S) provided between them; and imparting relative
movement to the bearing portion (30) and/or the body portion (50) such that thearticulation surfaces (32, 56) repeatedly slide over one another, whereby friction forcesgenerated between the articulation surfaces (32, 56) and the working substance (S) act tofinish the surfaces simultaneously.
申请人：AESCULAP AG
地址：DE
国籍：DE
代理机构：Isarpatent
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