Suction Machine is used to clear the airway of blood, saliva, vomit, or other secretions so that a patient may breathe. In pulmonary hygiene, suction is used to remove fluids from the airways, to facilitate breathing and prevent growth of microorganisms.
Suction machines use a long thin flexible plastic tube known as a catheter to vacuum out the secretions blocking the airways. These secretions are collected in a jar attached to the machine and can be emptied after the suctioning is completed.
The purpose of oral suctioning is to maintain a patent airway and improve oxygenation by removing mucous secretions and foreign material (vomit or gastric secretions) from the mouth and throat (oropharynx).