A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 5/56 (2006.01) A61C 7/08 (2006.01) A61C 7/36 (2006.01)
Patent
CA 2601060
A two part therapeutic intra-oral mandibular appliance is provided with single adjustment means facilitating mandibular protrusion or retrusion to a desired position while the appliance is being worn. To this end there is provided separate upper and lower U-shaped arches, each having a front section, two side sections, a top surface and bottom surface. The top surface of the upper arch and the bottom surface of the lower arch are respectively configured to receivingly engage at least some of a user's upper and lower teeth. The bottom surface of at least an anterior portion of the front section of the upper arch is recessed along a transverse step relative to the remainder of the bottom surface of the upper arch. A post is centrally located in the front section of the lower arch and is designed to extend upwardly from the top surface of the lower arch into the recessed front section of the upper arch. The adjustment means for selectively varying the distance between the post and the step and which results in the advancement or retraction of a wearer's mandible, comprises an elongate rod one end of which is threadedly interconnected to a bore extending through the post, and the other end of which abuts the step. The rod can be accessed for rotation while the appliance is being worn by inserting drive means such as a screwdriver into the bore so as to drivingly engage the one end of the rod threadedly connected to the post.
Bonato Richard A.
Bradley Donald C.
Braebon Medical Corporation
Perley-Robertson Hill & Mcdougall Llp
LandOfFree
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