SC-5 Electrical Ventilator is a result from the cooperation the application of reliability technical and micro-processor controlled between Shanghai Medical Equipment Factory and the Teaching and Research Section on reliability of Shanghai No.2 Industrial University. Sc-5 ventilator comes as a electronic-controlled electric-driven, time cycled, volume constant ventilator for the ventilation administration and care for the patient of respiratory failure in emergency site. During transportation of patient, in hospital or at home, with a well designed cylinder pump system the ventilator is able to , without an air compressor, output a precise volume and save the time for maintenance. Oxygen concentration in the inhaled gas can be adjusted through a oxygen enrichment kit connected to the gas take-in socket, the ventilator can also be furnished with humidifier, oxygen analyzer, etc. to extend clinical application. With internal battery keeps machine work another 120 minutes.