Systems and methods for treating vertebral bodies

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/46 (2006.01) A61B 17/88 (2006.01)

Patent

CA 2415389

A filler instrument comprises a first chamber section having a first cross sectional area (615) and a second chamber section having a second cross sectional area (620) less than the first cross sectional area. The second chamber section communicates with the first chamber section. The first chamber section includes an inlet for receiving a material into the filler instrument, and the second chamber section includes an outlet for discharging the material from the filler instrument. A first plunger (705) is sized to pass through the first chamber section and not the second chamber section. A second plunger (755) is sized to pass through an interior bore of the first plunger and into the second chamber section. In use, the first plunger displaces material residing in the first chamber section through the second chamber section toward the outlet, and the second plunger displaces material residing in the second chamber section through the outlet.

L'invention concerne un instrument de remplissage qui comporte une première partie de chambre dotée d'une première surface de section transversale et une seconde chambre dotée d'une seconde surface de section transversale inférieure à la première. La seconde partie de chambre communique avec la première. Celle-ci comprend une entrée destinée à recevoir une matière dans l'instrument de remplissage, et la seconde partie de chambre comprend une sortie destinée à décharger la matière dudit instrument. Un premier plongeur est dimensionné pour ne traverser que la première partie de chambre. Un second plongeur est dimensionné pour traverser un orifice intérieur du premier plongeur et s'introduire dans la seconde partie de chambre. En cours d'utilisation, le premier plongeur déplace la matière située dans la première partie de chambre à travers la seconde partie de chambre vers la sortie, et le second plongeur déplace la matière située dans la seconde partie de chambre à travers la sortie.

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