Nucleus pulposus implants and kit

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/44 (2006.01)

Patent

CA 2584480

Nucleus pulposus implants that are resistant to migration in and/or expulsion from an intervertebral disc space are provided. They include a load bearing elastic body surrounded in the disc space by an anchoring, preferably resorbable, biocompatible material which may be in the form of an outer shell. The elastic body may be surrounded by a supporting band. Kits for forming such implants are also provided. The implants may have locking features. The implants have shape memory characteristics which allow short-term deformation without permanent deformation, cracks, tears, breakage or other damage.

L'invention concerne des prothèses de nucleus pulposus qui sont résistantes à la migration dans l'espace intersomatique vertébrale et/ou à l'expulsion hors de ce dernier. Ces prothèses comprennent un corps élastique porteur entouré par un ancrage placé à l'intérieur de l'espace intersomatique, constitué de préférence d'un matériau biocompatible, résorbable qui peut se présenter sous forme d'une enveloppe externe. Le corps élastique peut être entouré d'une bande de support. L'invention concerne également des trousses de matériel permettant de former ces prothèses. Ces prothèses peuvent en outre comprendre des structures de fixation. Ces prothèses présentent des caractéristiques de mémoire de forme qui autorisent une déformation à court terme sans provoquer de déformation permanente, de fissures, de déchirures, de ruptures ou autres dommages.

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