Methods and instrumentation for vertebral interbody fusion

A - Human Necessities – 61 – B

Patent

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A61B 17/02 (2006.01) A61B 17/17 (2006.01) A61B 17/56 (2006.01) A61F 2/44 (2006.01)

Patent

CA 2461643

Methods and instrumentation particularly adapted for disc space preparation for insertion of implants from an anterior approach to the spine are provided. The instruments include a guide sleeve defining a channel having overlapping cylindrical working channel portions and lateral non-distracting extensions extending from reduced thickness wall portions. The guide sleeve has an overall reduced width configuration. A pair of distractors are provided. A first distractor includes a shaft and distal tip, and the second distractor includes a shaft and distal tip. The first and second distractors can be used with the guide sleeve. Methods using the disclosed instruments are also provided.

L'invention concerne des méthodes ainsi que des instruments particulièrement adaptés à la préparation de l'espace discal pour l'insertion d'implants par une approche antérieure dans la colonne vertébrale. Les instruments comprennent un manchon guide définissant un canal présentant des parties de canal de travail cylindrique en chevauchement ainsi que des prolongements non distracteurs latéraux s'étendant à partir de parties de paroi d'épaisseur réduite. Le manchon guide présente une configuration de largeur globale réduite. Une paire de distracteurs est prévue. Un premier distracteur comprend une tige ainsi qu'une extrémité distale, et le second distracteur comprend une tige ainsi qu'une extrémité distale. Les premier et second distracteurs peuvent être utilisés avec le manchon guide. L'invention concerne également des procédés d'utilisation des instruments décrits.

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