US Patent 11683633 Method and apparatus for hearing sounds through vibration

A mouth piece to transmit sound through vibration may include a front portion and a rear portion, which are connected through a connecting unit with each other to form a U-shaped apparatus. In one embodiment, the mouth piece can be disposed traversing the lower lip. More specifically, the front portion is disposed in front of the lower lip and the rear portion is disposed between the lower lip and the gum behind the lower lip, while the connecting unit is located between the upper lip and lower lip. The mouth piece may further include an extending piece extending from the rear portion into the mouth for the upper tooth and lower tooth to bite on.