Methods and apparatus for insertion of intervertebral...

A - Human Necessities – 61 – B

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

Patent

CA 2722918

Surgical device and methods for using same for distraction of adjacent vertebrae and insertion of an intervertebral implant material thereinbetween are disclosed. In a method, a leading end of the surgical device having major and minor dimensions is inserted between adjacent vertebrae with the minor dimension aligned in the rostral-caudal direction, and then the leading end is rotated to a second orientation to align the major dimension with the rostral-caudal direction. The surgical device includes slots permitting expansion thereof to allow an implant to be disposed from the leading end into the intervertebral space. In another form, the a first member of a surgical device is initially inserted in an orientation, and second member is moved relative to the first member to expand the first member for distracting the vertebrae, the implant then being disposed from the leading end into the intervertebral space.

La présente invention concerne un dispositif chirurgical et des procédés permettant dutiliser ledit dispositif pour lextension de vertèbres adjacentes et linsertion dun matériau dimplant intervertébral entre ces vertèbres. Un procédé consiste à insérer entre des vertèbres adjacentes une extrémité avant du dispositif chirurgical présentant des dimensions majeure et mineure, la dimension mineure étant alignée dans le sens rostro-caudal ; puis pivoter lextrémité avant vers une seconde orientation afin daligner la dimension majeure dans la direction rostro-caudale. Le dispositif chirurgical inclut des fentes permettant leur expansion, afin quun implant puisse être disposé depuis lextrémité avant dans lespace intervertébral. Dans une autre forme, le premier élément dun dispositif chirurgical est initialement inséré dans un sens, et un second élément est déplacé par rapport au premier élément afin détendre le premier élément et entraîner lextension des vertèbres, limplant étant alors disposé depuis lextrémité avant dans lespace intervertébral.

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