Prosthetic spinal disc nucleus

A - Human Necessities – 61 – F

Patent

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Details

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

Patent

CA 2296483

This invention is an elongated capsule shaped prosthetic spinal disc nucleus body (100a, 100b) for implantation into a human intervertebral spinal disc made of a hydrogel core, and a constraining jacket surrounding the hydrogel core that permits the hydrogel core to deform and reform. The constraining jacket is configured to allow the hydrogel core to hydrate to a predetermined volume, and will deform and reform in a desired fashion in response to various loads placed upon the spinal tract. The prosthetic spinal disc nucleus assists in restoring the natural physiology of the human intervertebral disc. By implanting two prosthetic spinal disc nuclei side by side into a damaged disc of a human spine, both height and motion can be maintained.

La présente invention concerne un corps de noyau discal intervertébral prothétique en forme de capsule allongée (100a, 100b) destiné à être implanté dans un disque humain intervertébral, fait d'une âme en hydrogel et d'une enveloppe de contrainte entourant l'âme de l'hydrogel de façon à ce qu'elle puisse se déformer et reprendre sa forme. Ladite enveloppe est conçue de manière à permettre à l'âme de l'hydrogel de s'hydrater jusqu'à ce qu'elle ait un volume prédéterminé, l'enveloppe se déformant et reprenant sa forme de la manière souhaitée, en réaction à des charges variées placées sur le tractus spinal. Le noyau discal intervertébral prothétique aide à restaurer la physiologie naturelle du disque intervertébral humain. En implantant deux noyaux discaux intervertébraux prothétiques côte à côte dans un disque endommagé d'une colonne vertébrale humaine, on peut maintenir aussi bien sa taille que son mouvement.

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