Patent attributes
A mandibular advancement device having a first frame and a second frame, the first frame having a first occlusal surface and a first generally U-shaped groove, the second frame having a second occlusal surface and second generally U-shaped groove, having a first sidewall orthogonal to the first occlusal surface and a second sidewall orthogonal to the first occlusal surface and parallel to the first sidewall. There is a rib between the first and second sidewall and parallel to the first and second sidewalls and having a top that is narrower than a middle, a third sidewall orthogonal to the second occlusal surface, the third sidewall in relative position to be slidingly received adjacent the first sidewall, and a fourth sidewall orthogonal to the second occlusal surface, the third sidewall in relative position to be slidingly received adjacent the second sidewall. A channel of the second occlusal surface disposed in relative position to snappingly receive the rib.