Artificial intervertebral disc

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/44 (2006.01) A61F 2/00 (2006.01) A61F 2/28 (2006.01) A61F 2/30 (2006.01)

Patent

CA 2466394

An artificial intervertebral disc includes housing members including spaced inner surfaces facing each other and oppositely facing outer surfaces for engaging spaced apart vertebral surfaces. Bearing surfaces extend from each of the inner surfaces for engaging each other while allowing for low friction and compression resistant movement of the housing members relative to each other while under compression. Load sharing pads are disposed between the inner surfaces and about at least a portion of the bearing surfaces for sharing absorption compressive loads with the bearing surfaces while limiting the relative movement of the housing members.

Un disque intervertébral artificiel comportant des éléments de boîtier, à savoir des surfaces intérieures espacées opposées et des surfaces extérieures opposées destinées à joindre des surfaces vertébrales séparées. Les surfaces d'appui s'étendent de chacune des surfaces inférieures et s'engagent les unes dans les autres tout en réduisant le frottement entre les éléments de boîtier ainsi que le mouvement relatif entre eux dû à la résistance à la compression. Des tampons d'appui sont placés entre les surfaces intérieures et environ au moins une portion des surfaces d'appui pour diminuer les charges compressives exercées sur les surfaces d'appui tout en réduisant le mouvement relatif entre les éléments de boîtier.

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