Intramedullary nail with a hybrid bow

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/72 (2006.01)

Patent

CA 2343964

An intramedullary nail apparatus includes an elongated nail body having a longer section and a shorter section. A detachable connection affixes the larger and shorter sections together end to end, using a taper lock connection, for example. The shorter section can provide transverse openings therethrough for enabling one or more fasteners to attach it to bone tissue, depending upon the medical indication. The nail includes a bow that consists of two tangent radii. This bow allows for the anterior bow of the femur and the relative strightness of the tibia. Thus, the apparatus of the present invention enables the same stems to be used in the treatment of femoral and tibial fractures. A stem is selected for any indication based on the desired diameter and length. The bow allows for a simplified surgical technique and a reduction in inventory of the nail system.

L'invention concerne un appareil d'enclouage intramédullaire comprenant un corps de clou allongé doté d'une section longue et d'une section courte. Un raccord détachable réunit les sections longue et courte bout à bout, grâce à un raccord de verrouillage conique par exemple. La section courte peut comporter des ouvertures transversales permettant de la fixer au tissu osseux avec une ou plusieurs attaches, en fonction des indications médicales. Le clou comprend une courbure consistant en deux rayons tangents. Cette courbure est adaptée à la courbure antérieure du fémur et à la rigidité relative du tibia. Ainsi, l'appareil selon la présente invention permet l'utilisation des mêmes tiges dans le traitement des fractures du fémur et du tibia. On sélectionne une tige pour toute indication sur la base du diamètre et de la longueur voulues. La courbure permet de simplifier la technique chirurgicale et de réduire l'inventaire à disposition du système d'enclouage.

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