Introduction of aspirator

The suction device is used to suck the contents of bleeding, exudate, pus and thoracic organs during operation, which makes the operation clear and reduces the chance of pollution. The principle of the suction device is very simple, that is, the suction head is in a negative pressure state through a certain method, so that the atmospheric pressure will squeeze the substances outside the suction head onto the suction head, thus completing the "suction" effect.