Surgical screw and tool for its insertion

Details Surgical screw and tool for its insertion Surgical screw and tool for its insertion

A - Human Necessities

61

B

A61B 17/86 (2006.01) A61B 17/88 (2006.01) A61B 17/00 (2006.01)

Patent

CA 2474515

The invention relates to a surgical screw system using a surgical screw (1) that is at least partially bioabsorbable in vivo, the screw (1) having a recess (3) or recesses (3a) in its head (6) for receiving an insertion instrument (8), wherein the recess (3) or the recesses (3a) have a rotational symmetry around the longitudinal axis of the screw (1). The recess (3) preferably comprises an odd number of rounded lobes extending away from the center of the head (6). The insertion instrument (8) for the screw comprises a distal end (10) that matches the shape of the recess (3) in the screw (1) and can be slidably engaged with the recess (3) or the recesses (3a).

L'invention concerne un système à vis chirurgicale utilisant une vis chirurgicale (1) qui est au moins partiellement bioabsorbable in vivo, la vis (1) présentant un évidement (3) ou plusieurs évidements (3a) dans sa tête (6), destinés à recevoir un instrument d'insertion (8), l'évidement (1) ou les évidements (3a) ayant une symétrie de rotation autour de l'axe longitudinal de la vis (1). L'évidement (3) comprend de préférence un nombre impair de bossages arrondis s'étendant à distance du centre de la tête (6). L'instrument d'insertion (8) utilisé pour la vis comprend une extrémité distale (10) s'adaptant au profil de l'évidement (3) dans la vis (1) et pouvant coopérer de façon coulissante avec l'évidement (3) ou les évidements (3a).

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