Apparatus and methods for vertebral augmentation

A - Human Necessities – 61 – B

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A61B 17/88 (2006.01) A61B 17/02 (2006.01)

Patent

CA 2625054

The apparatus comprises elongated members (2200) which are inserted into vertebrae and secured to an arcuate fixation rod (2300) by clamps (2400) which when moved along the rod cause the elongated members and attached vertebrae to pivot. The method may further include passing through a cannula (2100) and into the a damaged vertebra a disruption tool for fracturing the damaged vertebral body. Once the cortical bone is broken or otherwise disrupted, the height of the damaged vertebral body may be restored, for example by removing the disruption tool and inserting through the cannula another tool, implant, device and/or material to restore the height of the vertebral body and to restore normal spinal curvature in the affected area. Grafting material or filler may be added with or without an implanted device to augment the damaged vertebral body.

L~appareil objet de l~invention comprend des éléments allongés (2200) insérés dans les vertèbres et attachés à une tige de fixation arquée (2300) au moyen de clamps (2400) qui lorsqu~ils sont déplacés les font pivoter avec les vertèbres auxquelles ils sont fixés. Le procédé peut aussi comprendre l~introduction par une canule (2100) dans la vertèbre lésée d~un outil de rupture pour fracturer le corps vertébral lésé : une fois que l~os cortical est brisé ou rompu de toute autre manière, la hauteur du corps vertébral lésé peut être rétablie, notamment en retirant l~outil de rupture et en insérant par la canule un autre outil, un implant, un dispositif et/ou un matériau afin de rétablir la hauteur du corps vertébral et de restaurer une courbure rachidienne normale dans la zone affectée. Du matériau de greffe ou de charge peuvent être ajoutés avec ou sans l~implantation d~un dispositif pour renforcer le corps vertébral lésé.

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