The present invention comprises an insufflated air inlet (2a), an outlet (3a) for said insufflated air provided at the lower end of an air conveying tube (3) designed to penetrate the throat of the victim through the mouth, at least a first one-way valve (4) interposed between said air inlet (2a) and air outlet (3a) to allow the flow of air from said inlet (2a) to said outlet (3a) and prevent the flow of a fluid exhaled by the victim in the opposite direction, the body of said valve (4) including an outlet aperture (4a) for the exit of the fluid exhaled by the victim, and characterized in that the upper end of said insufflated air conveying tube (3) comprises a portion (3b) of tube (3) which is configured for internally receiving the body of said valve (4), the wall of said tube (3) including at least one outer hole (6) communicating with the aperture (4a) of the body of the valve (4) to allow discharging the fluid exhaled by the victim to the outside.