Breathing machine is a kind of can effectively replace, control or change people's normal breathing, increased pulmonary ventilation, improve respiratory function, reduce respiration consumption, saving device for cardiac reserve. In clinical, especially in the field of surgery, first aid, respiratory disease, breathing machine is more and more widely applied. As more and more powerful, the synchronization performance good, affordable and convenient to carry the emergence of household noninvasive ventilator breathing disease patients with mechanical ventilation therapy in the home, reduce the pressure of the hospital, and save the household spending. A, and the principle of breathing machine Any breathing machine working principle is that the differential pressure of the gas, the breathing machine ventilation, mechanical drive quickly crossing pressure is greater than the alveolar air pressure, air into the lungs. In the in vitro mechanical drive after the pressure is removed, thoracic and lung elasticity retraction, alveolar air pressure is greater than the gas crossing, gas from the lungs out. From this we can see that in the process of human breathing, breathing machine can only on pulmonary ventilation function, i.e., breathing out part of the work, internal breathing is affected, i.e., the influence on pulmonary capillaries and alveolar gas exchange is relatively small. Second, use the breathing machine Patients who used to rely on breathing machine to provide or increase the lung ventilation, portable domestic ventilator through precision components, gas flow rate, pressure measurement circuit is stable and reliable, quiet fan, personalized ventilation strategies and analog control circuit of electromagnetic valve, and all kinds of alarm measures and simple man-machine interface, etc., make breathing machine to achieve strong and reliable (security), economy and comfort, and possessed the handling characteristics of simple, can be used in the home environment, also can be used in medical institutions, without the need for constant professional monitoring, usually in training in different degree of medical personnel to monitor
