More than half of all air passengers know the uncomfortable feeling of pressure or pain in the ear that occurs mainly while landing. The ear is a very sensitive sensory organ. Behind the air-tight eardrum is the middle ear. While landing air pressure in the cabin of the airplane increase rapidly, it creates a relative negative pressure in the middle ear.
Now the Eustachian tube, as solid pipe connection between the middle ear and nose - pharynx area, must take care of equalization of pressure. If the Eustachian tube is not able to actively open up, it creates a relative negative pressure in the middle ear.Therefore, the eardrum will be suppressedin the direction of the middle ear. This leads to pain in the ears, and in extreme cases, to bleeding. ENT doctors call it barotrauma.
SANOHRA fly has been specically designed to protect the ear from rapid and severe changes in air pressure. A pressure regulator (apc), which is integrated into the earplug, regulates and slows down the pressure changes in front of the eardrum.