Intervertebral disc prosthesis

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/44 (2006.01)

Patent

CA 2637952

An intervertebral disc prosthesis comprises a first plate including a socket and a second plate comprising a recess. A core is sandwiched between the socket and the recess. The core includes a domed surface and a plug portion. The first plate is configured to rotate upon the domed surface of the core. The second plate is substantially fixed to the core, with the plug portion engaging the recess. The core may be press-fit into the second plate during assembly of the intervertebral disc prosthesis. The first plate and second plate both include tabs that define notches, wherein the notches are configured to engage prongs of a disc insertion tool. Teeth provided on the first plate and the second plate assist in fixing the first plate and the second plate to the vertebral bodies.

La présente invention concerne une prothèse de disque intervertébral comprenant une première plaque à emboîture et une seconde plaque à niche. Une clé figure entre l'emboîture et la niche. Elle comprend une surface en forme de dôme et une prise. La première plaque est configurée pour tourner sur la surface en dôme de la clé. La seconde plaque est substantiellement fixée à la clé, avec la prise s'engageant dans la niche. La clé peut être enfoncée dans la seconde plaque lors de l'assemblage de la prothèse du disque intervertébral. La première et la seconde plaque comprennent toutes deux des languettes qui définissent des encoches, sachant que les encoches sont configurées pour engager les pattes d'un outil d'insertion de disque. Les dents fournies dans la première et la seconde plaque aident à fixer la première et la seconde plaque aux corps vertébraux.

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