Mandibular advancement device that is characterized by being constituted by two parts an upper structure (1) and a lower one (2), which in turn are joined together, and where: - the upper structure (1) comprises an upper splint (3), which has a spider casing (4), constituted by the combination of: A) rod ends (5a-5b) of biocompatible steel, which on the one hand are joined at their ends more separated to the inner and medial part of the upper splint (3), and on the other to a connecting piece and guide (6) of the spider housing (4). B) a hook (7) that is on one side joined to a base (13) of the spider housing (4), and on the other free with the hook shape. C) attach the spider housing (4) by means of a top disengagement screw (8), in combination with an integrated polyamide nut (9), integrated to the spider housing unión and guide (6) (4). - the lower structure (2) comprises a lower splint (11), where a lower rod (12) of biocompatible steel is integrated, responsible for receiving the hook (7) and thus providing a stable connection. (Machine-translation by Google Translate, not legally binding)1. Dispositivo de avance mandibular que está caracterizado por encontrarse constituido por dos partes una estructura superior (1) y otra inferior (2), que a su vez se encuentran unidas entre sí, y donde: - La estructura superior (1) comprende una férula superior (3), la cual dispone de una carcasa araña (4), constituida por la combinación de: a) Unos extremos de varillas (5a-5b) de acero biocompatible, que por una parte se encuentran unidas por sus extremos más separados a la parte interior y mediana de la férula superior (3), y por el otro a una pieza de unión y guía (6) de la carcasa araña (4). b) Un gancho (7) que se encuentra por un lado unido a una base (13) de la carcasa araña (4), y por el otro libre con la forma de gancho. c) Unida la carcasa araña (4) mediante un tornillo de disyunción superior (8), en combinación con una tuerca de poliamida integrada (9), integrada a
