| CPC A61M 16/0683 (2013.01) [A61M 16/0666 (2013.01); A61M 2210/0625 (2013.01)] | 11 Claims |
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1. A respiratory mask connected to a breathing tube for receiving a first gas and releasing a second gas to supply a user's motion of respiratory system, the respiratory mask comprises:
a main part having a first air chamber, a first opening, a second opening and a third opening, the first opening is communicated with the second opening through the first air chamber;
an air chamber exchange part having a second air chamber, an exhaust assembly, a fourth opening and a fifth opening, the exhaust assembly is formed at a periphery of the air chamber exchange part, the fourth opening is connected to the breathing tube to receive the first gas from the breathing tube, the fifth opening is jointed with the first opening, wherein the exhaust assembly determines whether to communicate the second air chamber and an outside of the air chamber exchange part or not according to an internal air pressure and an external air pressure of the second air chamber;
an insert connected to the first air chamber, the insert is connected to the user's nose, and the insert guides the second gas to the user or guides the second gas from the user to the first air chamber and the second air chamber;
a clamping part connected to the third opening, the clamping part is connected to the user's mouth; and
the air chamber exchange part is composed of a plurality of conical cup bodies, the plurality of conical cup bodies are connected in a stack so that the exhaust assembly is formed between the plurality of conical cup bodies.
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