Auxiliary bronchofiberscope trachea cannula exposure device

A bronchofiberscope trachea cannula exposure assisting device is characterized in that a rear air bag 3 is fixed at the front end of a tongue depressor 7, the rear air bag 3 is connected to a front air bag 1 through a ventilation cavity 2, and the front air bag 1, the ventilation cavity 2 and the rear air bag 3 are integrally communicated and connected; the ventilation cavity 2 is connected to a ventilation pipe 4, and the tail of the ventilation pipe 4 is provided with a ventilation nozzle 5 which is installed on an injector 6 and has the function of a non-return one-way valve. When the tongue depressor is used, the ventilation nozzle 5 at the tail of the ventilation pipe 4 is mounted on the injector 6, the front end of the tongue depressor 7 extends into an oral cavity, the two air bags (the front air bag 1 and the rear air bag 3) are fed into the throat part while the tongue is depressed, then the injector 6 is pressed to inflate the front air bag 1 and the rear air bag 3, the front air bag 1 and the rear