Device to assist with the placement of screws in bone tissue...

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/16 (2006.01) A61B 17/88 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2750085

The invention relates to a device to assist with the placement of screws in bone tissue, characterised in that said device includes: - an elongate hollow body (1) comprising: - a proximal portion (2) enabling the attachment thereof to any rotating device, - a distal portion provided with a milling cutter (3) for making the recess for receiving the screw heads, - a central portion provided with a longitudinal window (4) with grading (5) and, - a drill spindle (6) with a diameter enabling the axial sliding thereof into the bore of the hollow body (1) and comprising, in the intermediate portion thereof, a marking means (7) suitable for being positioned opposite the window (4) of said body; the proximal portion (2) of the body (1) being arranged to enable either simultaneous rotation of the body (1) and the spindle (6) housed in the latter, or rotation of only the body.

Dispositif pour faciliter la mise en place de vis dans les tissus osseux, caractérisé en ce qu'il comprend : - un corps creux allongé (1) comportant : - une partie proximale (2) permettant sa fixation à tout dispositif d'entraînement en rotation, - une partie distale munie d'une fraise (3) permettant de réaliser le chambrage de réception de la tête des vis, - une partie centrale munie d'une fenêtre de lecture longitudinale (4) pourvue d'une graduation (5) et, - une broche perforeuse (6) présentant un diamètre permettant son coulissement axial dans l'alésage du corps creux (1) et comportant, dans sa partie intermédiaire, un moyen de repérage (7) susceptible d'être amené en regard de la fenêtre de lecture (4) dudit corps; la partie proximale (2) du corps (1) étant agencée pour permettre soit l'entraînement en rotation simultané du corps (1) et de la broche (6) logée dans celui-ci, soit l'entraînement dudit corps seulement.

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