Ceramic disc prosthesis

A - Human Necessities – 61 – F

Patent

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A61F 2/44 (2006.01)

Patent

CA 2571481

A prosthetic is provided for replacing a vertebral disc. The prosthesis can comprise first and second endplates formed of a ceramic material, each including an articulating contact surface and a bone facing surface. The contact surface of the first endplate can have a shape complementary to the contact surface of the second endplate, thereby facilitating articulation of the first and second endplates while in contact with one another. The device can further include at least one non-ceramic bone attachment element mated with at least one of the bone facing surfaces, such that the bone attachment element covers less than a full area of the bone facing surface.

Prothèse de remplacement d'un disque vertébral comportant des première et seconde plaques d'extrémité formées d'une matière en céramique, chacune comprenant une surface de contact d'articulation et une surface opposée à l'os. La surface de contact de la première plaque d'extrémité peut adopter une forme complémentaire à la surface de contact de la seconde plaque d'extrémité, et ce afin de faciliter l'articulation des première et seconde plaques d'extrémité lorsqu'elles sont en contact. Le dispositif peut également comporter au moins un élément de fixation à l'os non céramique correspondant à au moins une des surfaces opposées à l'os, de sorte que l'élément de fixation à l'os ne recouvre pas toute la zone de la surface opposée à l'os.

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