Bone plate with conical screw threads

Details Bone plate with conical screw threads Bone plate with conical screw threads

A - Human Necessities

61

B

A61B 17/80 (2006.01) A61B 17/86 (2006.01)

Patent

CA 2626694

The bone plate comprises a top side (1), an underside (2) to make contact with the bone, and several holes (4) mounted along the longitudinal plate axis (3) and connecting the top side and the underside (1) and (2) to receive bone screws (11). The diameter DL of at least one of these holes (4) is larger along the longitudinal plate axis (3) than this hole's diameter DQ transverse to the longitudinal plate axis (3). At least one of these holes (4) is fitted with an inside thread (5). This inside thread (5) tapers conically toward the bone plate's underside. The bone plate allows application as a compression plate and as a so-called inner affixation system without entailing tradeoffs.

La plaque pour ostéosynthèse comprend un côté supérieur (1), un côté inférieur (2) destiné à être en contact avec l'os, ainsi que plusieurs trous (4) situés le long de l'axe longitudinal de la plaque (3) qui servent à relier le côté supérieur (1) et le côté inférieur (2) ainsi qu'à recevoir des vis à os (11). Au moins de ces trous (4) a un diamètre DL plus long, dans le sens de l'axe longitudinal de la plaque (3), que le diamètre DQ, perpendiculairement à l'axe longitudinal de la plaque (3). Au moins un de ces trous (4) est doté d'un filetage intérieur (5). Ce filetage intérieur (5), de forme conique, rétrécit vers le côté inférieur de la plaque. La plaque pour ostéosynthèse peut s'utiliser sans compromis comme plaque à compression et comme système de fixation interne.

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