The utility model relates to the technical field of medical auxiliary supplies, in particular to a three-cavity valve
urethral catheter, which aims to solve the problems of the existing
urethral catheter, and adopts the scheme that a water filling
nozzle tube, a liquid outlet tube and a liquid inlet tube are jointly connected to the
tail end of a
catheter body, a hole groove is formed in the side part of the head end of the
catheter body, and a
balloon arranged on the
catheter body is arranged behind the hole groove. A
urination channel, a flushing channel and a liquid filling channel are arranged in the catheter body, and the water injection
nozzle tube, the liquid filling channel and the
balloon are sequentially connected to form an inflation channel. The liquid outlet tube, the
urination channel and the head end of the tube body are sequentially connected to form a catheterization channel; the liquid inlet
pipe, the flushing channel and the hole groove are sequentially connected to form a flushing passage; the water
injection port pipe is further connected with a water injection hard valve, threads are arranged on the inner wall of the water injection hard valve, the pressure reducing device is in threaded connection with the water injection hard valve, and valves are arranged in the liquid outlet
pipe and the liquid inlet pipe. And the valve in the liquid outlet pipe and the valve in the liquid inlet pipe are arranged in opposite directions. According to the scheme, the risk of retrograde infection of a patient is effectively reduced.