Prosthetic intervertebral discs implantable by minimally...

A - Human Necessities – 61 – F

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A61F 2/30 (2006.01) A61F 2/44 (2006.01) A61F 2/46 (2006.01)

Patent

CA 2649719

Prosthetic intervertebral discs and methods for using the same are described. The subject prosthetic discs include upper and lower end plates (110, 120) separated by a compressible core member (130). Fibres (140) or a fibrous material extend between the endplates and hold them together. The core member may be tillable or may be slidably introduced between the endplates. The distance between the endplates may be varied by a threaded mechanism or by shifting the endplates or the core member with respect to each other.

La présente invention concerne des disques intervertébraux prothétiques et des procédés pour les utiliser. Lesdits disques comprennent des plaques terminales supérieures et inférieures séparées par un élément de noyau compressible. Ils montrent une rigidité dans le sens vertical, une rigidité en torsion, une rigidité en flexion dans le plan sagittal et dans l'avant-plan, où le niveau de ces caractéristiques peut être contrôlé indépendamment en ajustant les composants des disques. Lesdits disques ont des formes, des tailles et d'autres caractéristiques qui les rendent particulièrement adaptés au déploiement à l'aide d'actes chirurgicaux minimalement invasifs.

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