Design of Portable Noninvasive Positive Pressure Ventilator System Based on Threshold Trigger of Flow Rate Change.
10.3969/j.issn.1671-7104.2023.05.009
- Author:
Xin WANG
1
;
Qin YUAN
1
;
Hangduo NIU
2
;
Jilun YE
2
;
Zhiying YUAN
2
Author Information
1. School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 611731.
2. School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, 518060.
- Publication Type:Journal Article
- Keywords:
parameter calculation;
respiratory trigger;
ventilation mode;
ventilator
- MeSH:
Humans;
Ventilators, Mechanical;
Respiration
- From:Chinese Journal of Medical Instrumentation
2023;47(5):512-517
- CountryChina
- Language:Chinese
-
Abstract:
In order to effectively treat respiratory diseases, a non-invasive positive pressure ventilator system is designed, the overall structure design of the system is proposed, and the hardware construction is completed. The breathing state of the patient is identified by the threshold triggering method of the flow rate of change, and the calculation of the flow rate of change is realized by the least squares method. At the same time, the breathing parameters are calculated in real time according to the flow-time and pressure-time characteristic curves. In addition, CMV, CPAP, BiPAP and PSV ventilation modes are also implemented. Finally, the parameter measurement accuracy and ventilation mode setting tests are carried out. The results show that the calculation of key breathing parameters provided by the system meets the relevant standards, and supports the stable output of 4 ventilation modes at the same time, provides breathing treatment for patients, and meets the basic functional requirements of the ventilator.
