By helping the lungs take in and expel air, ventilators aid in breathing for patients. Patients with illnesses including pneumonia, brain damage, and stroke are treated with these devices. Pushing or blowing oxygen-rich air into the lungs is the primary function of a ventilator. They need a ventilator until their condition becomes good enough for them to start breathing independently. The device makes sure that carbon dioxide is expelled from the body and that the organism obtains enough oxygen. When some diseases interfere with regular breathing, this is required.