Yada disposable sterile suction tubes are usually made of materials such as plastic and silicone, mainly used to collect saliva samples from patients' mouths for disease detection and diagnosis. One end of the saliva suction tube is a long rectangular straw, and the other end is a suction head. The suction head is usually spherical or flat in shape, which can better suck saliva. The material of the saliva suction tube should be non-toxic, odorless, and tasteless to ensure the purity and reliability of the collected saliva samples. The use of a suction tube is very simple, just place the suction head into the patient's mouth and let the patient hold the suction head to suck saliva.