Expanding dental implant and method of use

Details Expanding dental implant and method of use Expanding dental implant and method of use

A - Human Necessities

61

C

A61C 8/00 (2006.01)

Patent

CA 2188940

The technical field of the invention generally concerns an expandable dental implant for receiving and supporting a dental prosthesis. The expandable dental implant, securable within a bore formed into bone of a patient's jaw, includes an elongated, hollow, tubular barrel having both an attachment end and an insertion end. The barrel has both a threaded interior surface for screwing the implant into the bore, and a threaded exterior surface for receiving a threaded expander screw. The barrel is pierced about its insertion end by a plurality of radial slits spaced circumferentially around the barrel. The interior surface of the barrel at the insertion end is formed with a smaller diameter than the diameter of the interior surface of the barrel at the attachment end. The expander screw and the interior surface of the barrel are shaped so advancement of the expander screw along the barrel toward the insertion end causes an end surface of the expander screw to collide with the interior surface of the barrel, and to expand the insertion end outward into the surrounding bone.

Cette invention se rapporte à un implant dentaire extensible pouvant recevoir et supporter une prothèse dentaire. L'implant dentaire extensible, pouvant se fixer dans un trou pratiqué dans l'os de la mâchoire d'un patient, comprend un corps tubulaire, creux, allongé (32) pourvu d'une extrémité de fixation (34) et d'une extrémité d'insertion (36). Le corps tubulaire comporte une surface interne filetée (42) permettant de visser l'implant dans le trou, et une surface externe filetée (44) qui réceptionne une vis d'extension filetée (62). Le corps tubulaire est percé autour de son extrémité d'extension d'une pluralité de fentes radiales (52) espacées sur sa circonférence. La surface interne du corps tubulaire, au niveau de l'extrémité d'insertion, a un diamètre inférieur au diamètre de la surface interne, au niveau de l'extrémité de fixation. La vis d'extension et la surface interne du corps tubulaire sont configurées de telle façon que, lorsque la vis d'extension avance le long du corps tubulaire vers l'extrémité d'insertion, une surface terminale (74) de la vis vient heurter la surface interne du corps tubulaire, et l'extrémité d'insertion s'étend vers l'extérieur dans l'os environnant.

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