Double-lumen bronchial cannula

The utility model relates to the technical field of medical instruments, in particular to a double-lumen bronchial cannula which comprises a first trachea and a second trachea, the first trachea and the second trachea are both fixedly communicated with inflation tubes, the inflation tubes are both fixedly communicated with communicating shells, the top ends of the communicating shells are fixedly connected with blocking shells, and the blocking shells are fixedly connected with the first trachea and the second trachea. External threads are uniformly formed in the outer side of the plugging shell, a sealing cover is arranged on the plugging shell, internal threads corresponding to the external threads are uniformly formed in the inner side of the sealing cover, the sealing cover is installed on the plugging shell through the internal threads and the external threads, and a through groove plate is fixedly connected to the interior of the plugging shell. Through the arrangement of the sealing cover, the through