Bone plate for the fixation of fractures of the proximal...

A - Human Necessities – 61 – B

Patent

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A61B 17/80 (2006.01)

Patent

CA 2448522

The invention relates to a bone plate, which is used for the fixation of fractures of the proximal humerus. Said plate comprises a peduncular part (1), whose length is greater than its width x and a spoon-shaped part (2), whose width y is greater than the width x of the peduncular part (1). The peduncular part (1) and the spoon-shaped part (2) have a common longitudinal central axis (3) and are interconnected by a transition zone (26). At least 2 screw holes (9, 10, 16, 17; 24) are configured in the peduncular part (1) and the spoon- shaped part (2) respectively. At least one of the screw holes (24) in the peduncular part (1) has an at least partial internal thread (28) or partially spiralling key beds. At least one of the screw holes (9, 10, 16, 17) in the spoon-shaped part (2) has an internal thread (27) or partially spiralling key beds. The lead of the internal thread (27; 28) or the partially spiralling key beds ranges between 0.5 mm and 1.1 mm.

L'invention concerne une lame osseuse servant à la fixation de fractures de l'humérus proximal, comprenant une partie pédonculaire (1) dont la longueur est supérieure à sa largeur x, et une partie en forme de cuiller (2) dont la largeur y est supérieure à la largeur x de la partie pédonculaire (1). La partie pédonculaire (1) et la partie en forme de cuiller (2) présentent un axe central longitudinal commun (3) et sont interconnectées par une zone de transition (26). Au moins deux trous taraudés (9, 10, 16, 17 ; 24) sont prévus, respectivement, dans la partie pédonculaire (1) et dans la partie en forme de cuiller (2). Au moins l'un des trous taraudés (24) dans la partie pédonculaire (1) présente au moins un filet interne partiel (28) ou des logements de clavettes s'étendant partiellement sur le pourtour. Au moins l'un des trous taraudés (9, 10, 16, 17) dans la partie en forme de cuiller (2) présente un filet interne (27) ou des rainures de clavettes s'étendant partiellement sur le pourtour. Le pas du filet interne (27 ; 28) ou desdites rainures de clavettes partielles se situe entre 0,5 mm et 1,1 mm.

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