Exchange system for axial spinal procedures

A - Human Necessities – 61 – B

Patent

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A61B 17/60 (2006.01)

Patent

CA 2617932

An exchange system is disclosed, for providing a protected path to a subcutaneous procedure site. An exchange cannula is provided with a central lumen, and a drill wire lumen that serves as a portal for a drill wire for coupling the assembly to bone. The wall thickness of the exchange cannula may be eccentric, to accommodate the drill wire lumen within the exchange cannula wall. A tensioning handle may be carried over the exchange cannula, for engaging adjacent tissue. The exchange cannula may have a proximal "T" handle. An exchange rod is movably positionable within the central lumen of the exchange cannula.

L'invention concerne un système d'échange permettant de fournir une voie protégée à un site de procédure sous-cutanée. Une canule d'échange comprend une lumière centrale, et une lumière qui sert de portail à un fil de perçage permettant de coupler l'ensemble à un os. L'épaisseur variable de la paroi de la canule d'échange (relativement mince à relativement épaisse) permet de recevoir la lumière de fil de perçage à l'intérieur de la paroi relativement épaisse de ladite canule d'échange. Une poignée de tension peut être supportée par la canule d'échange afin de coopérer avec un tissu adjacent. La canule d'échange peut également comprendre une poignée proximale en T. Une tige d'échange peut être positionnée de manière rotative à l'intérieur de la lumière centrale de la canule d'échange.

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