Systems and methods for reducing fractured bone using a...

A - Human Necessities – 61 – B

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A61B 17/58 (2006.01) A61B 17/16 (2006.01) A61B 17/34 (2006.01) A61B 17/72 (2006.01) A61B 17/88 (2006.01) A61F 2/42 (2006.01) A61F 2/44 (2006.01) A61F 2/46 (2006.01) A61B 17/00 (2006.01) A61B 17/12 (2006.01) A61B 19/00 (2006.01) A61B 19/02 (2006.01)

Patent

CA 2426688

Systems and methods provide for the fixation of osteoporotic and non- osteoporotic long bones, especially Colles' fractures. A cannula having a circumferential opening is inserted into cancellous bone and directed such that the circumferential opening faces the fracture. The cannula is further adapted to receive an expandable structure, the expandable structure being inserted through the cannula until it is in registration with the circumferential opening. The expandable structure is expanded through the circumferential opening into cancellous bone and toward the fracture. The expansion of the expandable structure through the circumferential opening toward the fracture causes compression of cancellous bone and moves fractured cortical bone, thus creating a cavity proximal to the fracture. The cavity is then filled with a flowable bone filling material and the material allowed to harden.

L'invention concerne des systèmes et des procédés destinés à la fixation d'os longs ostéoporotiques et non ostéoporotiques, spécialement de fractures de Colles. On insère une canule, possédant une ouverture circonférentielle, dans l'os spongieux, dirigée de façon à ce que l'ouverture circonférentielle se trouve face à la fracture. La canule est aussi conçue pour recevoir une structure expansible, cette structure étant insérée dans la canule jusqu'à concorder avec l'ouverture circonférentielle. La structure est alors mise en expansion, à travers l'ouverture circonférentielle, dans l'os spongieux en direction de la fracture. L'expansion de la structure à travers l'ouverture circonférentielle provoque une compression de l'os spongieux et déplace l'os cortical fracturé, créant ainsi une cavité à proximité de la fracture. La cavité est alors remplie d'un matériau de comblement osseux fluide qui est amené à durcir.

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