Apparatus and method for supporting vertebral bodies

Details Apparatus and method for supporting vertebral bodies Apparatus and method for supporting vertebral bodies

A - Human Necessities

61

F

A61F 2/44 (2006.01) A61F 2/46 (2006.01)

Patent

CA 2523609

An apparatus and method for supporting upper and lower vertebral bodies, including first and second end members (22, 24) adapted for engagement with the vertebral bodies, and at least one elongate support member (26) coupled between the end members to maintain an axial space between the vertebral bodies. In one aspect of the invention, each of the end members has a parametrical or horseshoe-shaped configuration extending about an open inner region (30) and defining a lateral passage (32) communicating with the open inner region to facilitate insertion of the apparatus or the individual end members into the intervertebral space via a posterior surgical approach. In a further aspect of the invention, a fusion member (190, 192) is positioned within the axial space to promote bony fusion between the upper and lower vertebral bodies.

L'invention concerne un dispositif et une méthode permettant de soutenir des corps supérieurs et inférieurs de vertèbres, comprenant de premiers et de seconds éléments terminaux destinés à entrer dans les corps de vertèbres, ainsi qu'au moins un élément support allongé accouplé entre les éléments terminaux, afin de maintenir un espace axial entre les corps de vertèbres. Dans un aspect de l'invention, chacun des éléments terminaux présente une configuration polynomiale ou en forme de fer à cheval s'étendant pratiquement jusqu'à une zone intérieure ouverte et définissant un passage latéral communiquant avec la zone intérieure ouverte, afin de faciliter l'insertion du dispositif ou des éléments terminaux individuels dans l'espace intervertébral, par le biais d'une manoeuvre chirurgicale postérieure. Dans un autre aspect de l'invention, un élément de fusion est positionné dans l'espace axial afin de favoriser la fusion osseuse entre les corps supérieurs et inférieurs de vertèbres.

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