A safety device for motor vehicle includes a flexible hollow annular body including an arched upper base portion, an arched lower base portion and two opposing connection portions connected between the upper and lower base portions at two opposite sides, a flexible arched upper push piece having one end thereof connected to the upper base portion and an opposite end thereof extending toward the lower base portion so that a first elastic space is defined between the body and the upper push piece, and a flexible arched lower push piece having one end thereof connected to the lower base portion and an opposite end thereof extending toward the upper base portion so that a second elastic space is defined between the body and the lower push piece.

An oral training appliance for training the tongue and lips of a person is disclosed. The appliance comprises a U shaped body comprising a front section and two arms, an inner wall and an outer wall. A tongue training member extends from the inner wall and is moveable in response to movement by the user's tongue from a rest configuration to a training configuration. The appliance also comprises a lip training member and is moveable in response to movement of a user's lower lip from a rest configuration to a training configuration and the lip training member is biased towards the rest configuration.

A facial exercise apparatus for facial muscle and bone resistance training and method of use. The facial exercise apparatus includes one or more flexor arms and a mouthpiece stabilizer, each connected to a flexor head connector. The flexor arm(s) extend upward, downward, left or right from the flexor head connector, have contours to place the patient's lips, and provide a resistance force outward from the flexor head connector. In use, a patient places and bites down upon the mouthpiece stabilizer, places a portion of their lips along a contoured portion of one or more of the flexor arms, and pushes their lips toward the center of the flexor head connector against the resistance of the flexor arm(s). When done at regular intervals and increasing resistances, the apparatus can strengthen a patient's facial muscles and bone and reduce the cosmetic appearance of wrinkles on their face.

Various embodiments are directed to systems and methods for evaluating jaw movement characteristics of a user, for example, in a plurality of distinct jaw motion directions. In an example implementation, a jaw exercise system as discussed herein is configured to facilitate the exercise and/or quantification of a user's jaw strength in at least one of six distinct directions. As described herein, the jaw exercise system may comprise a frame assembly to which a user may selectively attach one of a plurality of an interchangeable functional assemblies, each configured to facilitate the evaluation of the jaw movement characteristics of a user in six jaw movement directions. The jaw exercise system comprises one or more of a progressive resistance attachment assembly, a passive motion attachment assembly, a force characterization attachment assembly, and a hyoid motion attachment assembly.

A device (103) for applying an electrical stimulation to one or more muscles of the mouth of the user, the device (103) includes one or more electrodes (132, 133) for applying electrical stimulation to one or more muscles of the mouth of a user and a sensor (140a, 140b, 141a, 141b) for determining the muscle tone of the tongue of the user. Also disclosed are methods and systems for determining a stimulation plan.

A device (100) for training oral muscle tone, the device (100) includes a mouthpiece (103) having a first and second arm (131) diverging away from one another and each carrying at least one electrode means (132a, 132b, 133a, 133b), at least one of the at least one electrode means protruding proud of adjacent portions of the arms (131), electrical circuitry operatively connected to the electrode means (132a, 132b, 133a, 133b), at least one of the at least one electrode means comprising an electrically conductive polymeric or plastics material.

The mouthpiece is adapted for insertion into a mouth of an end user. The mouthpiece enables teeth of an end user to clinch up and down so as to exercise the muscles associated with the jaw and head of the end user. The mouthpiece comprises an adjustable resistance. The mouthpiece further comprises an exterior surface that includes a superior dental arch cavity that accommodates the superior dentition. The mouthpiece further comprises an interior surface that includes an inferior dental arch cavity that accommodates the inferior dentition. The mouthpiece comprises a posterior surface that includes a shelf that is adapted to interface with a tongue. Optionally, the superior dental arch cavity has a curvature that coincides with the superior dental arch. Further, the inferior dental arch cavity has a curvature that coincides with the inferior dental arch.

A mouth-opening training device includes a water-filled bag having a zigzag edge or a sawtooth edge. By increasing or decreasing the amount of water located inside the water-filled bag to alter the total thickness of the water-filled bag, the device can accommodate different thickness of occlusion of teeth of a patient. The device can make a further improvement on layers of flavor in occlusion of the teeth. The device can further include a plurality of pivotable plate-shaped objects connected or coupled to the water-filled bag. The plate-shaped objects can provide different thickness combinations and further meet the user demands on thickness of occlusion of the teeth.

A device includes: a controller that converts a pressure value detected by a pressure detector into visual or aural lingual pressure information changed depending on a magnitude of the pressure value; and an information output unit, such as a buzzer and a color display LED, that outputs the lingual pressure information in response to a signal from the controller. The information output unit outputs lingual pressure information different depending on a pressing force applied on an elastic balloon by a tongue, allowing users such as patients and elderly people to continue a training without being bored.