Fastening nail

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/86 (2006.01) A61B 17/064 (2006.01) A61B 17/68 (2006.01) A61C 8/00 (2006.01) A61L 31/00 (2006.01) A61L 31/06 (2006.01) A61L 31/14 (2006.01) A61F 2/28 (2006.01) A61F 13/00 (2006.01)

Patent

CA 2242403

The invention concerns a fastening nail made of bioresorbable plastic material for securing a cover membrane to body bone surrounding a bone defect filled with bone substitute material. The nail has a head designed to enable it to be acted on by a pressure and/or impact tool and, joined to the head, a shaft with a smaller diameter. The shaft has an essentially cylindrical gripping section and, joined to it, a tip section with a conical surface tapering towards the point. The nail is characterized in that the plastic material is at least partly non-crystalline (amorphous) and has a glass transition temperature in the range of body temperature, the direction of the preferred molecular orientation in the material in the region of the shaft running essentially parallel to the longitudinal axis of the nail.

Clou de fixation en une matière plastique biorésorbable, pour la fixation d'une membrane de protection sur des os du corps entourant une zone osseuse défectueuse remplie d'un matériau de substitution osseuse, comprenant une tête, prévue pour être soumise aux effets d'un outil de pression et/ou de percussion, reliée à une tige de plus petit diamètre présentant une portion de fixation sensiblement cylindrique et, reliée à celle-ci, une partie en pointe, à surface latérale conique s'amincissant en direction de la pointe du clou, caractérisé en ce que la matière plastique est au moins partiellement non-cristalline (amorphe) et présente une température de transition vitreuse dans la plage de température du corps, et en ce que la matière plastique présente, dans la zone de la tige du clou, une orientation moléculaire préférentielle s'étendant sensiblement parallèlement à l'axe longitudinal du clou de fixation.

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