Patent ID: 7988626

Claim:
Device for covering the lips and corners of the mouth and for keeping away the lips, cheeks and corners of the mouth from the rows of teeth in the mouth of a patient comprising a first ellipsoidal shaped or circular shaped tensioning frame for external abutment against the mouth opening, a second, elastic ellipsoidal shaped or circular shaped tensioning frame for insertion into the vestibule of the patient's mouth and covering means having two opposing end portions connecting the tensioning frames, wherein the first tensioning frame is disposed along one end portion of the covering means and the second tensioning frame is disposed along the other end portion of the covering means, so that the inserted device is open towards the oral cavity, wherein the covering means is film-like and, when not inserted into the mouth, without a pre-determined shape, wherein in a condition of the device in which the covering means is not rolled around each of the tensioning frames more than once, the maximum distance from the first tensioning frame to the second tensioning frame is less than the maximum diameter of the first tensioning frame or of the second tensioning frame, and the second tensioning frame is adapted in order to be introduced into the patient's vestibule in an elastically deformed state and to intraorally fix the covering means, so that, when the device is inserted, the covering means extends between the extraoral first tensioning frame and the intraoral second tensioning frame in abutment to and around the lips and the corners of the mouth and exerts on them forces distributed over a large area, and that a pressure force is exerted on the lips, cheeks and corners of the mouth which pushes these away from the teeth and circularly biases the mouth opening into an open position, wherein the device permits the closing of the mouth.