The "Glass Lung" - A Lifelike Electromechanical Lung Simulator

Abstract Background: This contribution describes the hardware setup, control, andparametrization of an electromechanical test lung intended to perform tests withclinical ventilators.Methods: We use a nonlinear model to imitate the dynamic behavior of a reallung in terms of compliance and resistance. Both passive behavior andspontaneous breathing (weaning) are supported. In automated test sequences,the test lung mimics a variety of physiological and pathological lung conditions,including COVID-19.Results: We present the results obtained with an approved clinical ventilator invarious modes including pressure-controlled and pressure support ventilation.Conclusions: All results are clinically consistent with the values expected fromventilation of a real patient.