Bone-anchoring element

Details Bone-anchoring element Bone-anchoring element

A - Human Necessities

61

C

A61C 8/00 (2006.01)

Patent

CA 2276754

The invention relates to a rotationally symmetrical anchoring element for anchoring in bone tissue, for example permanent anchoring of artificial teeth and dental bridges in the jaw bone. The anchoring element is made of a biocompatible material and has a circumferential surface which includes a lower portion (6) intended to be incorporated with bone tissue, and an upper portion (9) which, following implantation, is located outside the bone tissue for the purpose of attachment of a spacer piece (12) or a prosthetic structure. The said upper portion (9) includes a smooth (unthreaded) conical portion (9) whose diameter increases in the direction away from the upper end surface (gable surface) (7) of the element. The conical portion (9) forms a bearing surface for the spacer piece (12) or the prosthetic structure.

L'invention concerne un élément d'ancrage à symétrie de révolution permettant un ancrage dans un tissu osseux, par exemple, l'ancrage permanent de prothèses dentaires ou de bridges dans la mâchoire. L'élément d'ancrage, réalisé dans un matériau biocompatible, a une surface circonférentielle comportant une partie inférieure (6) destinée à être intégrée au tissu osseux, et une partie supérieure (9) qui, après implantation, se situe à l'extérieur du tissu osseux, permettant ainsi la fixation d'une pièce d'écartement (12) ou d'une structure prothétique. La partie supérieure (9) comprend une partie conique (9) lisse (non filetée) dont le diamètre augmente en s'éloignant de la surface terminale supérieure (petit côté supérieur) (7) de l'élément. La partie conique (9) constitue une surface d'appui pour la pièce d'écartement (12) ou la structure prothétique.

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