The application discloses a
thoracic cavity closed drainage
bottle, which comprises a collecting
bottle, a water seal
bottle and a pressure measuring bottle, a liquid level alarm
assembly and a fan
assembly are arranged in the collecting bottle, a connecting
pipe is arranged at the top end of the collecting bottle, and a dredging
assembly is arranged in the connecting
pipe; the liquid level alarm assembly is hung in the collecting bottle; the fan assembly is arranged below the bottom end of the connecting
pipe which extends into the collecting bottle; the dredging assembly comprises a pressure increasing part, first opening and closing valves, second opening and closing valves, third opening and closing valves and a side pipe; the first opening and closing valves and the second opening and closing valves are arranged at the top end and the bottom end of the connecting pipe; the pressure increasing part is arranged outside the top end of the connecting pipe, and the side pipe is arranged outside the bottom end of the connecting pipe; and the third opening and closing valves are arranged in the side pipe. The application can monitor the amount of
thoracic fluid in the collecting bottle, can determine the tendency of active bleeding in time, can give a prewarning when the amount of
thoracic fluid in the collecting bottle is about to be full, and can automatically dredge when the pipeline is blocked during the drainage process, so that the tube pulling operation is not needed, and the pain of the patient is reduced.