Design and Construction of a Microcontroller-Based Ventilator Synchronized with Pulse Oximeter

• Published in: Journal of medical systems Vol. 40; no. 7; p. 180
• Main Authors: Gölcük, Adem, Işık, Hakan, Güler, İnan
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.07.2016; Springer Nature B.V
• Subjects: Computer programs; Fuzzy Logic; Gas analysis; Health Informatics; Health Sciences; Humans; Mathematical analysis; Medical equipment; Medicine; Medicine & Public Health; Microcontrollers; Oximetry - instrumentation; Physicians; Positive-Pressure Respiration - instrumentation; Pulse rate; Software; Software Design; Statistics for Life Sciences; Studies; Synchronism; Synchronization; Systems-Level Quality Improvement; Ventilators; Fuzzy logic; Pulse oximeter; SpO; PEEP; Microcontroller; Mechanical ventilator; Serial communication; FiO; FiO2; SpO2
• ISSN: 0148-5598; 1573-689X
• DOI: 10.1007/s10916-016-0538-x

This study aims to introduce a novel device with which mechanical ventilator and pulse oximeter work in synchronization. Serial communication technique was used to enable communication between the pulse oximeter and the ventilator. The SpO 2 value and the pulse rate read on the pulse oximeter were transmitted to the mechanical ventilator through transmitter (Tx) and receiver (Rx) lines. The fuzzy-logic-based software developed for the mechanical ventilator interprets these values and calculates the percentage of oxygen (FiO 2 ) and Positive End-Expiratory Pressure (PEEP) to be delivered to the patient. The fuzzy-logic-based software was developed to check the changing medical states of patients and to produce new results (FiO 2 ve PEEP) according to each new state. FiO 2 and PEEP values delivered from the ventilator to the patient can be calculated in this way without requiring any arterial blood gas analysis. Our experiments and the feedbacks from physicians show that this device makes it possible to obtain more successful results when compared to the current practices.