A Web Application of Simulation System of Artificial Respirator

-A Web application of a ventilator simulation system was developed for the students of clinical engineering and health care professionals. The system runs on Internet Explorer (5.5 or higher) and was developed using HTML, VBScript and Active X control (tklsim.ocx 70kB). The system was composed of a ventilator module and a respiratory model module. The ventilator module makes various waveforms of flow and/or pressure as inputs to the respiratory module. The respiratory module is consisted of four resistances of respiratory circuit (Rt), main airway (Ra), right and left lungs (Rr, Rl), two compliance (Cr, Cl), and spontaneous breathing pressure (Ps). The modules simulate dynamic state of the respiratory system during various artificial ventilations. The Web application is useful to understand about systems physiology of the ventilator-lung system and to experience the ventilator operation virtually. II. SYSTEM DESIGN The application was designed to demonstrate the principles of ventilation from the viewpoint of the physiology and potential hazards by the misuse. The system assumed to be used by students of medicine, nursing, clinical engineering and health care professionals as a self-training tool. It simulates physiologically the dynamics of pressures and flows in normal breathing and various controlled ventilation. The user of this system can try and lean various ventilation modes and hazardous situations in a virtual world. URL http://info.ahs.kitasato-u.ac.jp/tkweb/tklsim2/indexE.html III. SYSTEM OVERVIEW The system was composed of a respiratory module, a ventilator module, and control panels (Fig.1).