Patent ID: 8312884

Claim:
An intra-oral device comprising: an upper appliance configured to be fitted to an upper dental arch of a user; a lower appliance configured to be fitted to a lower dental arch of the user; a forward facing vertical contact wall and a horizontal shoulder positioned on an outer, front portion of the upper appliance; the lower appliance includes an “h” shaped bracket, a lower portion of the bracket is embedded into the lower appliance, and an un-embedded upward extending portion of the bracket has an adjustment element integrated into its distal end; wherein adjusting the adjustment element in one direction moves the adjustment element rearward, with respect to the user's mouth, to contact and become load bearing onto the forward facing vertical contact wall of the front portion of the upper appliance which moves the lower appliance forward with respect to the upper appliance, and adjustment of the adjustment element in an other direction moves the adjustment element away from the vertical contact wall and allows the lower appliance to move rearward with respect to the upper appliance; and in a state where the adjustment element is load bearing against the vertical contact wall, downward movement of the lower appliance relative to the upper appliance is restricted by contact between a lower rearward facing surface of the adjustment element and a forward facing horizontal shoulder of the upper appliance.