Patent attributes
The present invention discloses a respiratory mask to connect a user and a breathing tube for receiving a first gas and releasing a second gas, so as to provide an user's respiratory system to exchange gas. It comprises a main part, an air chamber exchange part, an insert and a clamping part. The main part provides a first, second, and third openings that are communicated each other. The first opening connects to the breathing tube to receive the first gas from the breathing tube. The air chamber exchange part provides an exhaust assembly to relieve pressure according to an internal air pressure of the air chamber exchange part. The insert connects to the user's nose so as to direct the first gas to the user or direct the second gas from the user to the air chamber exchange part. The clamping part connects to the user's mouth.
