Simulation of Mechanical Ventilator Using Simscape Fluids Gas Library

Abstract

A mechanical ventilator is a machine which completely substitute the efforts the body most produce to move air into, and out of the lung, it is an essential device for those who can’t breathe sufficiently. COVID-19 increases the need for mechanical ventilators worldwide in order to help patients who suffers from acute respiratory distress syndrome as the most common symptom. This project suggests and presents a volume control mechanical ventilator model integrated with respiratory system model, both models are adjustable and allow the user to simulate his design accurately and assessing it is performance with multiple patients’ respiratory system conditions. MATLAB\Simulink fluids(gas library) was used to simulate three different cases coupled with VCV mode adjustable model of mechanical ventilator, and the results of the flow rate and pressure waveforms were extracted and compared against ideal waveforms of flow rate and pressure, and they showed great similarity. The system provides proper solutions for difficult problems such as mechanical ventilator complexity, high costs of commercial designs, the need of open source designs which cut the costs, and assessment of these designs without jeopardizing human lives.