A medical aspirator is a suction machine used to remove mucus, blood, and other bodily fluids from a patient.
They can be used during surgical procedures but an operating theater is generally equipped with a central system of vacuum tubes.
[1] Most aspirators are therefore portable, for use in ambulances and nursing homes, and can run on AC or battery power.
Plastic tubing is used to continuously draw fluid into the collection canister.
[2] This article related to medical equipment is a stub.