Surgical blind rivets with closing elements

Details Surgical blind rivets with closing elements Surgical blind rivets with closing elements

A - Human Necessities

61

B

A61B 17/68 (2006.01) A61B 17/04 (2006.01) A61F 2/02 (2006.01) A61F 2/08 (2006.01) F16B 19/10 (2006.01) A61F 2/36 (2006.01)

Patent

CA 2334443

The present invention relates to an orthopedic fastener for fixing an implant, suture, or tissue to a bone. The fastener comprises a blind rivet and a closing element. The blind rivet includes a head at a proximal end, a shank connected to the head, and an anchoring portion near a distal end. A bore extends though the head and shank from the proximal end to the distal end and the bore has a polygonal cross-section through the anchoring portion. The closing element has a body with an outer surface and is configured and dimensioned to be received in the anchoring portion. The outer surface of at least a portion of the closing element distal end has a polygonal cross-section flaring along the longitudinal axis toward the closing element distal end. The anchoring portion of the blind rivet severs into a plurality of anchoring legs when the closing element is pulled in the bore toward the blind rivet proximal end to thereby prevent rotation of the fastener.

L'invention concerne un dispositif de fixation d'implants chirurgicaux, de fils ou de tissus dans ou sur l'os. Le dispositif comprend un rivet aveugle (1) et un élément de fermeture (2). L'élément de fermeture (2) présente une section polygonale sur au moins une partie (7) de sa longueur, située dans le prolongement de son extrémité postérieure (12) et, sur cette partie (7), la section (5) s'élargit le long de l'axe longitudinal (3) vers l'extrémité postérieure (12). Lors de la fermeture du rivet aveugle (1), ce dernier peut être divisé en languettes d'ancrage séparées (13) et les languettes d'ancrage (13) peuvent être évasées par rapport à l'axe longitudinal (3) à l'aide de l'élément de fermeture et constituer la tête de fermeture (14) du rivet aveugle (1). Le passage (4) pratiqué dans le rivet aveugle (1) présente sur la partie de fermeture (9) une section polygonale.

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