Device intervertebral disc prosthesis comprising at least three pieces, pieces including a first plate (1) and a second plate (3) producing around at least one core (2), movable between said plates (1, 3 ), an articulation by support or sliding between surfaces load bearing (12, 15, 21, 21a, 23, 32, 51, 52) of said pieces including one of these parts at least one projecting part (4) cooperating the shape of at least one other of said parts to form at least one stop mechanism which limits the possibilities of movement of the core, wherein said core comprises a supporting surface of concave load (21) in contact with a support surface convex load (12, 52) of another of said parts and a bearing surface of convex load (23) in contact with a supporting surface of concave load (32) of one of the plates (1, 3), in the wherein said concave bearing surface load (21 ) Of the core has a radius of curvature greater than the radius of the bearing surface of convex charging (23) the core and comprises a recess (22) cooperating with said projecting portion (4) projecting from the first plate (1) .Dispositivo de prótesis de disco intervertebral que comprende al menos tres piezas, piezas que incluyen una primera placa (1) y una segunda placa (3) que producen, alrededor de al menos un núcleo (2) ,móvil entre dichas placas (1, 3), una articulación mediante soporte o deslizamiento entre superficies de soporte de carga (12, 15, 21, 21a, 23, 32, 51, 52) de dichas piezas, incluyendo una de estas piezas al menos una parte sobresaliente (4) que coopera con la forma de al menos otra parte de dichas piezas para formar al menos un mecanismo de tope que limita las posibilidades de movimiento del núcleo, caracterizado porque dicho núcleo comprende una superficie de soporte de carga cóncava (21) en contacto con una superficie de soporte de carga convexa (12, 52) de otra de dichas piezas y una superficie de soporte de carga convexa (23) en contacto con una superficie de soporte de carga cóncava (32
