Intervertebral disc prosthesis having ball and ring structure

Details Intervertebral disc prosthesis having ball and ring structure Intervertebral disc prosthesis having ball and ring structure

A - Human Necessities

61

F

A61F 2/44 (2006.01)

Patent

CA 2716847

An artificial intervertebral disc comprises two opposing shells having opposing inner surfaces and oppositely directed outer surfaces. The outer surfaces adapted for locating against adjacent vertebrae. The inner surface of one shell including a ball and the inner surface of the other shell including a cooperating ring adapted to restrict articulation of the ball within a defined region.

Un disque intervertébral artificiel comprend deux coques opposées présentant des surfaces internes opposées et des surfaces externes dirigées dans les directions opposées. Les surfaces externes sont adaptées de manière à venir se placer contre des vertèbres adjacentes. La surface interne d'une coque comprend une bille et la surface interne de l'autre coque comprend un anneau coopérant avec la bille, adapté de manière à restreindre l'articulation de la bille dans une région définie.

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