Guide sleeve for offset vertebrae

Details Guide sleeve for offset vertebrae Guide sleeve for offset vertebrae

A - Human Necessities

61

B

A61B 17/90 (2006.01) A61F 2/46 (2006.01)

Patent

CA 2327348

A guide sleeve (50) with longitudinally offset bone engaging portions (72, 74) is provided for engagement with anterior-posterior offset vertebral bodies. In one aspect of the invention the guide tube (50) has fixed bone engaging portions in a predetermined offset position. In another form of the invention, the guide sleeve (80) is composed of at least two movably connected portions (82, 84) adapted to permit adjustment of the offset between the bone engaging portions (91, 93). Further, a method is provided for using a guide sleeve (50, 80) with offset bone engaging portions.

L'invention concerne un manchon de guidage (50), comportant des parties de contact osseux (72, 74) décalées en direction longitudinale, qui permet de bloquer des corps vertébraux décalés dans le sens antéro-postérieur. Dans l'un des aspects de l'invention, le tube de guidage (50) comporte des parties de contact osseux fixes dans une position décalée prédéterminée. Dans un autre mode de réalisation, le manchon de guidage (80) comprend au moins deux parties (82, 84) mobiles l'une par rapport à l'autre, conçues pour permettre l'ajustement du décalage entre les parties de contact osseux (91, 93). L'invention concerne également une technique qui permet d'utiliser un manchon de guidage (50, 80) comportant des parties de contact osseux décalées.

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