Dynamic knee balancer

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/56 (2006.01) A61B 17/16 (2006.01) A61F 2/46 (2006.01)

Patent

CA 2555283

Dynamic knee balancing devices, systems and methods provide for enhanced total knee arthroplasty ("TKA") procedures. Devices generally include a stationary femoral member for removably attaching to a distal femur and an adjustable femoral member coupled with the stationary member for adjusting ligament tension of the knee. The adjustable femoral member includes at least one positioning feature for providing positional and/or orientation information for facilitating the TKA procedure. Additionally, the adjustable femoral member is movably couplable with a tibial member engaged with the proximal tibia to allow movement of the knee through a range of motion without removing the device from the joint space. When the adjustable femoral member is adjusted, the positional feature(s) move relative to the distal femur to provide positional information.

L'invention concerne des dispositifs, des systèmes et des procédés d'équilibrage dynamique du genou permettant d'améliorer les procédures d'arthroplastie totale du genou ("TKA"). Les dispositifs selon l'invention comprennent généralement une structure fémorale stationnaire qui est destinée à être fixée de manière libérable sur un fémur distal, ainsi qu'une structure fémorale ajustable qui est accouplée avec la structure stationnaire pour ajuster la tension ligamentaire du genou. La structure fémorale ajustable comprend au moins un élément de positionnement servant à fournir des informations sur le positionnement et/ou l'orientation pour faciliter la procédure de TKA. En outre, la structure fémorale ajustable peut être accouplée de manière mobile avec une structure tibiale en contact avec le tibia proximal pour permettre le mouvement du genou selon une certaine amplitude, sans que le dispositif ne soit retiré de l'interligne articulaire. Lorsque la structure fémorale ajustable est ajustée, le(s) élément(s) de positionnement se déplace(nt) par rapport au fémur distal pour fournir des informations sur le positionnement.

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