An emergency medical gadget that aids in oxygen delivery is a non-rebreather mask. It comprises of a reservoir bag with a high concentration of oxygen within that is attached to a face mask. An oxygen tank is linked to the reservoir bag.
This non-rebreather mask is offered in both adult and child sizes. You can provide high oxygen concentrations with this device and the reservoir bag that is attached. Non-rebreather masks also forbid inhaling air from sources other than the reservoir bag that comes with them. After that, you receive more concentrated oxygen to help with breathing.