A simple oxygen mask is made to effectively deliver oxygen therapy
for respiratory care. It delivers variable oxygen concentration
between *5~*5% at flow rate of 5~*0 L/min.
The oxygen mask fits over the mouth and nose of the patient and
consists of exhalation ports ( holes on the side of the mask)
through which the patient exhales CO2 (carbon dioxide). It is held
in place by an elastic around the back of the head, and it has a
metal piece to shape over the nose to allow for a better mask fit
for the patient.
