7E-A Portable Phlegm Suction Unit is a newly designed oil-free lubrication pump based on extensive design experience and development trend of domestic and overseas products. It is specially designed for absorbing thick liquid such as blood, phlegm etc. It is the commonly applied medical device in the emergency room, operating room and for nursing in sick room or home health care. High negative pressure, large flux. It is a brand new mechanism design with suction bottle hidden inside and square negative pressure meter crust completely made of plastic. This design reduces the working noise and gives streamlined performance.