Three-cavity catheter convenient for bladder irrigation

The utility model relates to the technical field of three-cavity urethral catheters, and provides a three-cavity urethral catheter convenient for bladder irrigation, which comprises a main flow tube, when the main flow tube, a sleeving main tube and a sleeving auxiliary tube are mounted, the sleeving main tube is sleeved on the outer side of the main flow tube along a groove at the bottom of the sleeving main tube, and then the sleeving auxiliary tube is taken out; sliding grooves are symmetrically formed in the two sides of the top of the sleeving auxiliary pipe and aligned with the sliding blocks, the sleeving auxiliary pipe slides into the sleeving main pipe from one side of the bottom of the sleeving main pipe, and at the moment, the sleeving work of the sleeving main pipe and the rubber soft sleeve on the main flow pipe is completed; then, a worker enables a first dustproof sleeve, a second dustproof sleeve and a third dustproof sleeve to sleeve the tube heads of the air bag tube, the drainage branch tub