The suction tube for newborns is size 6 to 8; for infants and toddlers it is size 8 to 10; for children it is size 10 to 14; and for adults it is size 10 to 16.
The sputum suction tube is a medical device that is used in medical settings, such as hospitals and clinics, through which sputum can be sucked out of the respiratory tract, thus keeping the respiratory tract open and preventing complications such as aspiration pneumonia, atelectasis, and asphyxia.