Spinal implant

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/44 (2006.01) A61F 2/00 (2006.01) A61F 2/28 (2006.01) A61F 2/30 (2006.01)

Patent

CA 2232723

A spinal implant including a hollow, generally tubular shell having an exterior lateral surface, a leading end, and a trailing end. The shell has a helical thread projecting from its exterior surface. The thread includes a plurality of pillars. Each pillar has a height of 100-4500 microns and a lateral dimension at the widest point of 100-4500 microns. The exterior surface has a plurality of holes therethrough to permit bone growth therethrough. The spinal implant may alternatively have a plurality of pillars projecting from its exterior surface in a regular, non-helical array.

L'invention porte sur un implant pour colonne vertébrale, composé d'une coque creuse et généralement tubulaire comprenant une surface latérale extérieure, une extrémité avant et une extrémité arrière. La coque présente un filetage hélicoïdal dépassant de sa surface extérieure. Le filetage inclut une série de montants dont la taille et la dimension latérale au point le plus large varient toutes deux entre 100 et 4500 micromètres. La surface extérieure comprend une série de trous permettant à l'os de croître à travers ces derniers. L'implant pour colonne vertébrale peut également comporter une série de montants dépassant de la surface extérieure et disposés de façon régulière et non hélicoïdale.

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