Implant

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/38 (2006.01) A61B 17/80 (2006.01) A61F 2/36 (2006.01)

Patent

CA 2640759

An implant (10) for anchoring on a bone (1) has a plurality of anchoring pins (20) which extend away from a fastening side of the implant and are provided for anchoring the implant in the bone. In different areas of the fastening side of the implant, the pin arrangement and/or the geometry of the pins are chosen differently. In particular, in different areas of the fastening side of the implant, the volume of the anchoring pins (20) per unit of surface area of the fastening side of the implant is different, preferably in such a way that the geometry and/or arrangement of the pins (20) is chosen according to the proportion of bone tissue in the total tissue of the bone substance, opposite which the area of the fastening side is provided, in such a way that, in areas where there is a relatively higher proportion of bone tissue as a whole, less tissue is displaced by the anchoring pins than in areas where there is a relatively smaller proportion of bone tissue.

L'invention concerne un implant (10) qui présente pour son ancrage dans un os (1) plusieurs tiges d'ancrage (20) qui débordent du côté de fixation de l'implant et qui sont destinées à ancrer l'implant dans l'os. L'agencement de tiges et/ou la géométrie des tiges peuvent être différents dans différentes parties du côté de fixation de l'implant. En particulier, dans différentes parties du côté de fixation de l'implant, le volume des tiges d'ancrage (20) par unité de surface du côté de fixation de l'implant varie, de préférence en sélectionnant la géométrie et/ou l'agencement des tiges (20) en fonction de la proportion de tissu osseux dans la totalité du tissu du matériau de l'os présent face à cette partie du côté de fixation, de telle sorte que dans des zones où la proportion de tissu osseux est plus élevée, globalement moins de tissu soit refoulé par les tiges d'ancrage que dans les zones où la proportion de tissu osseux est plus basse.

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