A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/34 (2006.01) A61F 2/00 (2006.01) A61F 2/02 (2006.01) A61F 2/30 (2006.01) A61F 2/32 (2006.01) A61F 2/36 (2006.01)
Patent
CA 2390514
The technical field of the invention is the production of surgical equipment implantable in the human body. The invention concerns an acetabular prosthesis (1) comprising a hollow hemispherical artificial acetabular cup (2) comprising expansion slots distributed over its periphery, and provided with teeth (11n, = 1-3) on the outer surface, a threaded intermediate element (3) and a plastic insert (4). The invention is characterised in that the intermediate element (3) is a hollow core with an outer hemispherical surface capable of being urged in contact against at least an internal meridian generatrix of each segment defined between said slots; the inside part close to the orifice of the acetabular cup (2) comprises a thread wherein is screwed said intermediate core (3); the internal diameter of said acetabular cup (2) orifice of said acetabular cup (2) in reception position before said intermediate element (3) is screwed, is smaller than the external diameter of said intermediate element (3).
Le secteur technique de l'invention est le domaine de la réalisation de matériaux chirurgicaux implantables dans le corps humain. L'invention concerne une prothèse cotyloïdienne (1) comprenant un cotyle artificiel hémisphère creux (2), comportant des fentes d'expansion réparties sur sa périphérie, et dotées de dents (11n, = 1-3) sur la face extérieure, un élément intermédiaire (3) fileté et un insert (4) en matière plastique. Selon l'invention, l'élément intermédiaire (3) est un noyau creux de surface extérieure hémisphérique apte à venir en contact contre au moins une génératrice intérieure et méridienne de chaque segment défini entre lesdites fentes; la partie intérieure proche de l'ouverture du cotyle (2) comporte un filetage dans lequel se visse ledit noyau intermédiaire (3); le diamètre interne de l'ouverture dudit cotyle (2) en position d'attente avant le vissage dudit élément intermédiaire (3), est inférieur au diamètre externe dudit élément intermédiaire (3).
Afriat Jacques
Bensadoun Jean-Louis
Macrae & Co.
Sudimplant Chirurgie
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