The invention discloses an intermittent negative-pressure
sputum suction device for a child patient with congenital esophageal
atresia, and a using method of the intermittent negative-pressure sputumsuction device. The device comprises a
liquid storage bottle, a
bottle cap, a processor, an alarm module, an
electromagnetic valve control module, an
electromagnetic valve, a battery, an AC / DC conversion module, a working mode knob, a touch screen, a
liquid level sensor, a negative pressure interface, an air pressure adjusting knob and a
barometer, wherein the
liquid storage bottle is of a hollowcylinder structure with an opening in the upper end, a threaded opening matched with the
bottle cap is formed in the upper end face of the
liquid storage bottle, a
bottle cap negative
pressure pipe isarranged at the circle center of the
bottle cap in a penetrating mode and extends into an inner cavity of the liquid storage bottle, the upper end of the bottle cap negative
pressure pipe is connected with the output end of the
electromagnetic valve, the input end of the electromagnetic valve is connected with the negative pressure interface, the air pressure adjusting knob and the
barometer arearranged on the negative pressure interface, and a
sputum suction tube interface connected with a
sputum suction tube is arranged on the side face of the bottle cap. The intermittent negative pressuresputum suction device for the child patient with the congenital esophageal
atresia is simple in structure and convenient to use.