The utility model relates to the technical field of
sputum collectors, and discloses a
sputum collector with a blocking function, which comprises a negative pressure collecting
bottle, the top surface of the negative pressure collecting
bottle is in threaded connection with a
bottle cap, a
sputum inlet
pipe is fixedly arranged on one side of the top surface of the
bottle cap, a sputum suction component is inserted into the sputum inlet
pipe, and the sputum suction component is in threaded connection with the bottom surface of the negative pressure collecting bottle. A blocking
assembly is fixedly arranged on the other side of the top face of the
bottle cap, a negative
pressure pipe is inserted into the blocking
assembly, and a connector
assembly is fixedly arranged at one end of the negative
pressure pipe. According to the sputum collector with the blocking function, through the arrangement of the blocking assembly, when sputum of a patient is sucked, a sputum suction
nozzle is placed in the
nasal cavity of the patient, a negative
pressure pipe is connected with external negative pressure equipment, air in a negative pressure collection bottle is pumped out, sputum is sucked, air can pass through the U-shaped
pipe and a gas permeable membrane, but the sputum cannot pass through the U-shaped pipe, and therefore the sputum can be sucked out. The situation that the sputum and the air in the negative pressure collecting bottle are sucked into external negative pressure equipment at the same time when the negative pressure pipe extracts the air in the negative pressure collecting bottle is avoided.