Staple and thread assembly particularly for use in...

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/064 (2006.01)

Patent

CA 2207739

A staple and thread assembly to be driven into the bone by a power-driven stapler while the thread is attached thereto, the stapler having a head section at its forward end formed with a pointed tip for penetrating the bone when driven into it, and a shank section rearwardly of the head. The longitudinal axis of the shank section is offset from the axis of the head section and is formed with a pair of transverse holes through which the thread is secured such that the thread exits from the holes. The head section forms a protective shroud shielding the thread when driven with the staple into the bone. The thread is secured to the shank section of they staple at a point closer to the staple tip than the rear end of the staple. The staple is constructed from a metal possessing shape memory characteristics, and deforms from a straight configuration at room temperature, to a curved configuration upon being subject to body heat upon implantation into the body. The suture thread is secured to the shank section and, preferably, a recess is provided to the shank section to protect the thread.

Ensemble constitué par une agrafe et par un fil (20, 30) comprend une agrafe comportant une tête (21) pourvue d'une extrémité pointue (22), ainsi qu'une tige (23) située derrière la tête. L'axe (LAs) de la tige est décalé par rapport à l'axe (LAa) de la tête et la tige présente une paire d'orifices transversaux (24, 25) à travers lesquels le fil est fixé. La tête constitue une protection pour le fil quand on l'enfonce dans l'os avec l'agrafe. Le fil est fixé à la tige à proximité de l'extrémité pointue. L'agrafe est fabriquée en un métal à mémoire de forme et se déforme depuis un aspect rigide à température ambiante jusqu'à un aspect incurvé lorsqu'on l'implante dans le corps. Un creux (26) se trouve sur la tige afin de protéger le fil.

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