Flexible nasal cannula with buffering function

Abstract

The present invention relates to the technical field of nasal cannulas, and particularly to a flexible nasal cannula with a buffering function. The cannula includes a cannula main body, a heating box and a bundling block. A bottom end of the cannula main body is communicated with a shunt tube, a bottom end of the shunt tube is communicated with two groups of oxygen supply tubes, one end of each oxygen supply tube is communicated with an oxygen supply connector, through holes are disposed on two opposite surfaces of the heating box, a sealing ring is arranged on an inner wall of each through hole, a drainage hole is communicated with one side surface of the heating box, an observation window is arranged on one side surface of the heating box, threaded holes are disposed at four corners of an opening on an upper surface of the heating box, and an upper cover is arranged on the upper surface of the heating box. For the flexible nasal cannula with a buffering function according to the present invention, a concentrated oxygen flow is dispersed into multi-directional soft air flow through a shunt plate. After being fully mixed with air in a nasal cavity, not only an oxygen concentration becomes more uniform, but also the problem of local excessive or insufficient oxygen concentration is avoided, and the accuracy of oxygen therapy is improved.

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