A device that fits over a person’s nose and mouth to permit the breathing of oxygen. The should be semiopen, valveless, and made of transparent plastic.
A mask connected to a supply of oxygen, which can be put over the face to help someone with breathing difficulties.
Device used to administer oxygen. It is shaped to fit snugly over the mouth and nose, and may be secured in place with a strap or held with the hand. Oxygen flows at a prescribed rate through a catheter to the mask, often through a soft rubber bag that can be pumped by hand.