Abstract: 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.

Abstract: A periodontal pocket probing device facilitating fabrication and application and effectively reducing the cost is disclosed to include a main body, and a probe having a connection portion located at one end thereof and connected to the main body and a flat probing tip located at an opposite end thereof and defining a flat front end edge on a front side thereof opposite to the connection portion for allowing the produced pressure to be distributed in all directions to reduce the patient's pain upon insertion of the probe into the deep inside of a periodontal pocket.

Abstract: Oral lip and chin muscle rehabilitating device made of flexible material and having an annular open shape in accordance with the configuration of human oral lips. One side of the upper edge of the opening is formed with a recessed upper lip rest section extending outward and upward. One side of the lower edge of the opening is formed with a recessed lower lip rest section extending outward and downward. The upper and lower lip rest sections respectively receive therein the upper and lower lips of a user. A resilient connecting section is connected between the upper and lower lip rest sections to provide a certain resilient stretching force therefor. The oral lip and chin muscle rehabilitating device is positioned between the upper and lower lips of the user to rehabilitate and train the lip and chin muscle and recover the closing function of the lips.

Abstract: As oral lip and chin muscle rehabilitating device made of flexible material and having an annular open shape in accordance with the configuration of human oral lips. One side of the upper edge of the opening is formed with a recessed upper lip rest section extending outward and upward. One side of the lower edge of the opening is formed with a recessed lower lip rest section extending outward and downward. The upper and lower lip rest sections respectively receive therein the upper and lower lips of a user. A resilient connecting section is connected between the upper and lower lip rest sections to provide a certain resilient stretching force therefor. The oral lip and chin muscle rehabilitating device is positioned between the upper and lower lips of the user to rehabilitate and train the lip and chin muscle and recover the closing function of the lips.