A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/44 (2006.01)
Patent
CA 2647780
An artificial disc having a pair of baseplates (10, 30), for sealing against opposing vertebral bone surfaces, separated by a ball and socket joint that includes a ball (22) attached to baseplate (10). The ball is captured within a curvate socket (37) formed in a peak of a housing (31) attached to other baseplate (30). The socket is formed by opposing curvate surfaces, one on the convex structure and one on the baseplate. The ball rotates and angulates in the socket. The ball and socket joint therefore permits the baseplates to rotate and angulate relative to one another. Rotation of the ball can be limited. The device can be axially compressive and can include wire mesh (14, 34) on the outer surfaces of the baseplates.
Disque artificiel muni d'une paire de plaques de base (10, 30) pour obtenir un scellé face à des surfaces d'os vertébral, séparées par une bille et un joint de douille qui comprend une bille (22) fixée à la plaque de base (10). La bille est maintenue dans un joint recourbé (37) formé à la pointe du logement (31) fixé à l'autre plaque de base (30). La douille est formée de surfaces recourbées et opposées, une sur la structure convexe et l'autre sur la plaque de base. La bille tourne et forme un angle dans la douille. La bille et le joint sphérique permettent ainsi aux plaques de base de pivoter et de former un angle l'une par rapport à l'autre. La rotation de la bille peut être limitée. Le dispositif peut être comprimé sur le plan axial et peut comprendre une grille métallique (14, 34) sur les surfaces extérieures des plaques de base.
Dudasik Michael W.
Errico Joseph P.
Ralph James D.
Tatar Stephen
Zubok Rafail
Fasken Martineau Dumoulin Llp
Spinecore Inc.
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