Osteosynthetic fixation device

Details Osteosynthetic fixation device Osteosynthetic fixation device

A - Human Necessities

61

B

A61B 17/58 (2006.01) A61B 17/60 (2006.01)

Patent

CA 2116546

An osteosynthetic fixation device consists of a fixation element 1 which has a conical head section 11 and an anchoring element 12 abutting it which is for attachment into the bone. The fixation device also consists of a spherically formed, layered, slotted clamping piece 2 which has a conical borehole 21 for installation of the conical head section 11, and which is meant for locking within a connecting piece 3 equipped with a spherically shaped layered borehole 31. Fixation piece has an axially arrayed tension element 4, permitting axial displacement and wedging of conical head section 11 in the borehole 21 that corresponds with it. The fixation device is appropriate for use as a plate/screw system, an internal or external fixator, and in particular for spinal column fixation.

Un dispositif de contention ostéosynthétique comprend un élément de fixation (1) ayant une tête conique (11) raccordée à une pièce d'ancrage (13) destinée à être fixée dans l'os. Un élément fendu de blocage (2) en forme de segment sphérique à deux bases comprend un passage conique (21) de réception de la tête conique (11) et est bloqué à l'intérieur d'un élément de liaison (3) pourvu d'un passage (31) en forme de segment sphérique à deux bases. L'élément de fixation (1) est pourvu d'un élément axial de traction (4) qui permet de déplacer axialement et de coincer la tête conique (11) dans le passage correspondant (21). Ce dispositif de rétention peut être utilisé comme système à plaque et à vis, comme dispositif de contention externe ou interne, et notamment pour la contention de la colonne vertébrale.

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