Surgical drill guide having keyway for axial alignment of...

A - Human Necessities – 61 – B

Patent

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A61B 17/17 (2006.01) A61B 17/90 (2006.01)

Patent

CA 2693770

A surgical drill guide for positioning, aligning, and of holes to be drilled in bone tissue has retaining means that holds the position and alignment of the drill guide body in a releasable manner with respect to a fastener hole in an orthopedic implant. The retaining means is a key guide that mates with a key way or key ways in or around a threaded locking hole of an orthopedic plate for alignment of a pilot hole and method of using the guide. The key guide has 2 to 8 projections that extend in the direction of the axis of the hole, such as hemi-cylindrical projections, and the plate has a corresponding female key way that receives the retaining means.

La présente invention concerne un guide pour perceuse chirurgicale, destiné à permettre le positionnement et l'alignement pour réaliser le perçage de trous dans un tissu osseux. Ledit guide est pourvu d'un moyen de retenue, qui maintient la position et l'alignement du corps de guide de la perceuse d'une manière libérable par rapport à un trou de fixation dans un implant orthopédique. Le moyen de retenue est un guide de clé qui s'apparie avec une ou des rainures d'entraînement, dans ou autour d'un trou de verrouillage fileté d'une plaque orthopédique, pour permettre l'alignement d'un avant-trou. L'invention concerne également un procédé d'utilisation de ce guide. Le guide de clé présente 2 à 8 saillies qui s'étendent dans la direction de l'axe du trou, par exemple des saillies cylindriques, et la plaque présente une rainure d'entraînement femelle correspondante qui reçoit le moyen de retenue.

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