Orthopaedic ligament fixation system

Details Orthopaedic ligament fixation system Orthopaedic ligament fixation system

A - Human Necessities

61

B

A61B 17/84 (2006.01) A61B 17/88 (2006.01) A61F 2/08 (2006.01)

Patent

CA 2388841

A ligament fixation system comprising an expandable screw (11) with an atraumatic thread. The screw is expanded by insertion of an expansion screw (12) into a threaded longitudinal bore of the expandable screw to cause radial expansion of the screw. The system includes an insertion tool (32) having an outer sleeve (33) for insertion of the expandable screw and an inner relatively rotatable member (39) for insertion of the expansion screw. The tool includes a torque gauge. The invention extends to methods of fixing a tendon graft in a bone tunnel.

L'invention concerne un système de fixation de ligament, comprenant une vis expansible (11) à filetage atraumatique. La vis est expansée par introduction d'une vis d'expansion (12) dans un alésage longitudinal fileté de la vis expansible, de façon à entraîner l'expansion radiale de ladite vis. Le système comprend un outil de mise en place (32) possédant un manchon extérieur (33) qui coopère avec la vis expansible, et un élément rotatif (39) relativement intérieur qui coopère avec la vis d'expansion. L'outil possède une jauge de couple. L'invention concerne également des procédés de fixation d'une greffe de tendon dans un tunnel osseux.

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