Orthosis comprising an upper tray and a lower tray, and connection with adjustable positioning
An orthosis includes an upper tray and a lower tray, which are designed to line the teeth of an upper jaw and the teeth of a lower jaw, respectively. A connection joins the trays. The upper tray has at least a first fixed base, and the lower tray has at least a second fixed base. The connection has a fixed length and is designed to be fixed, on the one hand, to the first base and, on the other hand, to the second base, in a position that has an advancing effect and that is adjustable by way of a control element integrated in at least one of the two bases.
1. An orthosis including:
an upper tray and a lower tray configured to respectively cover teeth of an upper jaw and teeth of a lower jaw, wherein the upper tray has at least one first fixed base and the lower tray has at least one second fixed base; and
a connection of said first base to said second base, wherein said first and second bases have complementary shapes so that one of the bases forms a sliding guide of the other, according to an adjustable positioning with an advancing effect, said connection being securable so as to prevent any movement between the upper tray and the lower tray when the orthosis is in place in the mouth of a patient,
wherein said first base and said second base are secured to each other by at least one screw; and
wherein:
said first base has a single screw passage while said second base has at least two screw passages configured to be one or the other placed so as to coincide with the single screw passage of the first base, or
said second base has a single screw passage while said first base has at least two screw passages configured to be one or the other placed so as to coincide with the single screw passage of the second base.
2. The orthosis according to claim 1 , wherein said first base has a slide track and said second base forms a slide capable of sliding in said slide track.
3. The orthosis according to claim 2 wherein each of said first base and said second base forms a coupling element with one of the trays, with said slide track or said slide extending from said coupling element.
4. The orthosis according to claim 1 , wherein said second base has a slide track and said first base forms a slide capable of sliding in said slide track.
5. The orthosis according to claim 4 wherein each of said first base and said second base forms a coupling element with one of the trays, with said slide track or said slide extending from said coupling element.
6. The orthosis according to claim 1 , wherein said screw is self-tapping.
7. The orthosis according to claim 1 , wherein one of said first and second bases has a series of screw passages enabling an adjustment of positioning with an advancing effect of the connection between the first and second bases over a 10 mm stroke.
8. The orthosis according claim 1 , wherein one of said first and second bases has a series of screw passages enabling an adjustment of the positioning with advancing effect with an 2 mm pitch.
9. The orthosis according to claim 1 , wherein said upper tray has a first contact surface and said lower tray has a second contact surface bearing against said first contact surface according to a contact plane with a slope corresponding to a direction of adjustment of the positioning with advancing effect of the connection.