Implant for the intervertebral space

Details Implant for the intervertebral space Implant for the intervertebral space

A - Human Necessities

61

F

A61F 2/44 (2006.01)

Patent

CA 2530730

The invention relates to an implant (1) for the intervertebral space, comprising a body (2) with: A) an upper contact surface (3) for resting against the base plate of a vertebral body that adjoins the implant (1) on top, a lower contact surface (4) for resting against the cover plate of a vertebral body that adjoins the implant (1) underneath; B) two lateral side surfaces (18; 19), a front and rear side surface (16, 17), and a central axis (5) that intersects the two contact surfaces (3; 4), a longitudinal axis (14) that intersects the front and the rear side surface (16; 17), and a transversal axis (15) that intersects the lateral side surfaces (18; 19), and; C) a central plane (36), which is located between the contact surfaces (3; 4) and which is perpendicular to the central axis (5) of the body (2), whereby; D) the contact surfaces (3; 4) have, at least in part, macroscopic teeth (7) with central axes (34), whereby; E) the central axes (34) of the teeth (7) are at an angle to the central plane (36) whereby promoting a rotation of the body (2) about the longitudinal axis (14) in one direction of rotation and hindering a rotation in the other direction of rotation.

L'invention concerne un implant (1) destiné à un espace intervertébral comprenant un corps (2) ayant A) une surface de contact supérieure (3) à appliquer sur la plaque de base d'un corps vertébral supérieur adjacent à l'implant (1), une surface de contact inférieure (4) à appliquer sur la plaque de recouvrement d'un corps vertébral inférieur adjacent à l'implant (1) ; B) deux surfaces latérales de côté (18;19), une surface latérale avant et une surface latérale arrière (16;17) ainsi qu'un axe central (5) coupant les deux surfaces de contact (3;4), un axe longitudinal (14) coupant la surface latérale avant et arrière (16;17) et un axe transversal (15) coupant les surfaces latérales de côté (18;19) ; et C) un plan central (36) situé entre les surfaces de contact (3;4) et perpendiculaire à l'axe central (5) du corps (2); D) les surfaces de contact (3;4) présentant au moins partiellement des dents macroscopiques (7) ayant un axe central (34) ; E) les axes centraux (34) des dents (7) étant obliques par rapport à l'axe central (36) de telle manière qu'une rotation du corps (2) autour de l'axe longitudinal (14) soit favorisé dans un sens de rotation et gêné dans l'autre sens de rotation.

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