Tri-joint implant

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/44 (2006.01)

Patent

CA 2567833

Methods and devices are provided for replacing damaged, injured, diseased, or otherwise unhealthy elements of the spinal three-joint complex, such as the facet joints and discs. In one exemplary embodiment, a joint replacement system includes a facet replacement component that is adapted to replace and/or augment the facet joints, and a disc replacement component that is adapted to replace a spinal disc. The facet replacement component and the disc replacement component can couple to one another to allow and/or control flexion, extension, and/or lateral bending of the spine, preferably while substantially restricting posterior-anterior shear and axial rotation of the spine.

L'invention concerne des procédés et des dispositifs permettant de remplacer des éléments endommagés, blessés, malades ou en mauvaise santé du trépied vertébral, tels que les facettes articulaires et les disques. Selon un mode de réalisation présenté à titre d'exemple, un système de remplacement articulaire comprend un composant de remplacement de facettes, adapté pour remplacer et/ou agrandir les facettes articulaires, et un composant de remplacement de disque, adapté pour remplacer un disque vertébral. Le composant de remplacement de facettes et le composant de remplacement de disque peuvent s'accoupler pour permettre et/ou contrôler la flexion, l'extension et/ou la courbure latérale de la colonne vertébrale, de préférence tout en limitant sensiblement le cisaillement postérieur-antérieur et la rotation axiale de la colonne.

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