External fixator

Details External fixator External fixator

A - Human Necessities

61

B

A61B 17/60 (2006.01) A61B 17/64 (2006.01) A61B 17/86 (2006.01)

Patent

CA 2056152

By virtue of its modular construction, this external fixator makes it possible to position the pins (21 to 25) in the bone fragments (11 to 13) taking account of anatomical criteria. The pins are at least indirectly integral with universal joints (36 to 38) with balls (46 to 48) permitting the orientation of the pins relative to connecting bars 503 and 504. The external fixator additionally comprises connecting pieces for articulation between the connecting bars (501 to 507), such as the articulation (7), the telescopic connecting piece (8) and orientable connecting pieces (97 to 99). After the onset of osseous consolidation, some of the connecting bars and their connecting pieces can be removed, it being possible for the bars (501, 502) to be withdrawn from the vices (65, 66).

De par sa construction modulaire, ce fixateur externe permet de tenir compte de critères anatomiques dans le positionnement des fiches (21 à 25) dans les fragments osseux (11 à 13). Les fiches font, du moins indirectement, partie intégrante de joints universels (36 à 38) à rotules (46 à 48) qui permettent d'orienter les fiches par rapport aux barres d'union externes (503 et 504). Le fixateur externe comporte en outre des pièces de liaison s'articulant entre les barres d'union externes (501 à 507), telles que l'articulation (7), la pièce de liaison télescopique (8) et les pièces de liaison orientables (97 à 99). Au terme de la consolidation osseuse, certaines barres d'union ainsi que leurs pièces de liaison peuvent être enlevées, les barres (501 et 502) pouvant être retirées des mâchoires de fixation (65 et 66).

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