Intramedullar osteosynthetic device of two bone parts, in...

A - Human Necessities – 61 – F

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A61F 2/42 (2006.01)

Patent

CA 2604526

The invention concerns an intramedullar osteosynthetic device of two bone parts, in particular of the hand and/or foot, characterized in that it consists of an elongated body (1) having, successively, from one of its ends, an anchoring zone (1a) co-operating with one of the bone parts to be immobilized, a median zone (1c) adapted to withstand shearing and flexural stresses, and an anchoring zone (1b) in the other part of the bone to be immobilized, each of said anchoring zones (1a) and (1b) is profiled and made from a material selected to enable the bone parts to be inserted without pulpal access, then to provide anchorage in said bone parts while avoiding any rotational movement, by withstanding traction and maintaining a compressive stress.

Ce dispositif d~ostéosynthèse intramédullaire de deux parties d'os, notamment de la main et/ou du pied est remarquable en ce qu'il est constitué par un corps (1) de forme allongée présentant, successivement, à partir de l'une de ses extrémités, une zone d'ancrage (la) coopérant avec l'une des parties d'os à immobiliser, une zone médiane (1c) apte à résister aux contraintes de cisaillement et de flexion, et une zone d'ancrage (1b) dans l'autre partie d'os à immobiliser, chacune desdites zones d'ancrage (la) et (1b) est profilée et réalisée dans un matériau sélectionné pour permettre une introduction dans les parties d'os sans abord pulpaire, puis pour assurer un ancrage dans lesdites parties d'os en évitant tout mouvement de rotation, en résistant à la traction et en maintenant un effort de compression.

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