Vertically expanding intervertebral body fusion device

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/44 (2006.01)

Patent

CA 2426932

This invention relates to intervertebral spacers (10, 30, 70, 90, 110, 120, 140 and 150) for use in orthopedic treatment of spinal defects. The intervertebral space is formed of a shaped memory polymer material. The spacer can be fabricated into a desired configuration and then deformed into an alternative or deformed configuration. Cooling the deformed spacer effectively freezes the spacer into its deformed conformation. The deformed configuration can be selected to facilitate implantation of the spacer into a prepared disc space between adjacent vertebrae. During operation, the surgeon can heat the spacer to allow it to revert to its original configuration. The spacer in its original conformation is sized to restore and/or maintain the adjacent vertebrae in a desired conformation and disc space height.

L'invention concerne des espaceurs intervertébraux (10, 30, 70, 90, 110, 120, 140 et 150) à utiliser dans un traitement orthopédique d'anomalies rachidiennes. L'espaceur intervertébral est formé dans un matériau polymère à mémoire de forme. L'espaceur peut être fabriqué dans une configuration souhaitée et puis déformé dans une configuration alternative ou déformée. Le fait de refroidir l'espaceur déformé congèle celui-ci de manière efficace dans sa conformation déformée. La configuration déformée peut être choisie pour faciliter l'implantation de l'espaceur dans un espace discal préparé, entre des vertèbres adjacents. Pendant l'opération, le chirurgien peut chauffer l'espaceur de manière à permettre à celui-ci de retrouver sa configuration originale. L'espaceur dans sa conformation originale présente des dimensions permettant de rétablir et/ou de maintenir les vertèbres adjacents dans une conformation et une hauteur d'espace discal souhaitées.

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