The electronic circuit was cased to keep the electronic components from destruction and also to protect the user from possible electronic shocks.
The inflatable material was chosen so that it is compatible to all skin types, so that even patients with skin allergies are safe to use the device.
The solenoid valve controls the pressure going through the inflatable with the help of the relay, thus the patient is protected from excessive pressures that may cause serious damages to the anatomical functions of the patient, if not looked into.image