One-way plugging structure for double-cavity trachea cannula

The single-pass plugging structure comprises a double-cavity trachea cannula body, the left side of the double-cavity trachea cannula body is connected with a connecting tube through a tee joint, and the single-pass plugging structure is characterized in that the connecting tube is a hard tube, tube openings are formed in the upper portion and the lower portion of the connecting tube, and blocking structures are installed in the upper tube opening and the lower tube opening. A connecting column is arranged in the middle of the blocking structure, an upper sliding block is arranged above the connecting column, a lower sliding block is arranged below the connecting column, and the connecting column moves up and down to control connection and disconnection of the connecting pipe; the double-cavity trachea cannula connecting tube is simple in structure, belongs to a connecting tube structure on a double-cavity trachea cannula, and can be completely matched with an existing double-cavity trachea cannula for use. 本