Features 1、Adopt unique negative pressure system, household first aid suction device. 2、Compact in size and light in weight, convenient to carry with you. 3、Reliable and safety to use, no harm for human body, practical first aid tool. 4、Suitable for elderly, cough sputum asthma patients use. 5、Phlegm suction pump, washable and reusable, respiratory first aid suction device. Specification Features: Adopt unique negative pressure system, household first aid suction device. Compact in size and light in weight, convenient to carry with you. Reliable and safety to use, no harm for human body, practical first aid tool. Suitable for elderly, cough sputum asthma patients use. Phlegm suction pump, washable and reusable, respiratory first aid suction device. Specification: Condition: 100% Brand New Material: Plastic Usage: Sterilize the sputum suction tube, test operate with water and experience the sputum suction process. The sputum aspiration tube of the patient's mouth was inserted into the appropriate place and the pressure controller was used to convert the sputum rapidly. When the volume of the liquid storage bottle reaches two-thirds, the liquid must be cleaned again. Package List: 1 x Phlegm Suction Device 2 x Tube 1 x Manual