Bone cement mixing and delivery device for injection and...

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/46 (2006.01) B01F 7/00 (2006.01) B01F 15/00 (2006.01)

Patent

CA 2448238

A bone cement mixing and delivery assembly (30) is disclosed for mixing a powdered copolymer and a liquid monomer to form a bone cement and delivering the bone cement. The assembly includes a cartridge having a distal end (34) and a proximal end (36) and defining a mixing chamber (40) between the distal end and the proximal end. A transfer mechanism having a cap (52) and a stem supporting a piston (64) and a plunger is connected to the distal end. The transfer mechanism includes a first advancement mechanism (68) for advancing the piston and plunger in unison and a second advancement mechanism (70) for moving the plunger independent of the piston. The assembly further includes a removable handle (120) having a shaft for attachment of a mixing blade and a quick-release connector (142) and a release button (144) for locking and unlocking the mixing blade (128) from the removable handle.

L'invention concerne un ensemble d'administration et de mélange (30) de ciment osseux, permettant de mélanger un copolymère en poudre et un monomère liquide pour la formation d'un ciment osseux, et d'administrer celui-ci. Ledit ensemble comprend une cartouche présentant une extrémité distale (34) et une extrémité proximale (36), et définissant une chambre de mélange (40) située entre les extrémités proximale et distale. Un mécanisme de transfert présentant un embout (56) et une tige portant un piston (64) et un piston plongeur est connecté à l'extrémité distale. Ledit mécanisme de transfert comprend un premier mécanisme d'avancement (68) qui permet de faire avancer conjointement le piston et le piston plongeur, et un second mécanisme d'avancement (70) qui permet de déplacer le piston plongeur indépendamment du piston. L'ensemble comprend en outre une poignée amovible (120) présentant une tige permettant de fixer une lame mélangeuse et un raccord à déclenchement rapide (142), et un bouton de déclenchement (144) destiné à bloquer et à débloquer la lame mélangeuse (128) à partir de la poignée amovible.

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