Analysis on working principle and common fault of air-oxygen mixing and air path control of ventilator
10.3969/j.issn.1672-8270.2025.01.029
- VernacularTitle:呼吸机空气氧气混合及气路控制工作原理及常见故障分析
- Author:
Qingtao LIU
1
;
Huiyong ZHANG
Author Information
1. 青岛市中医医院医院办公室 青岛 266033
- Publication Type:Journal Article
- Keywords:
Ventilator;
Air-oxygen mixing;
Access pathway of oxygen;
Access pathway of air;
Control valve;
Flow sensor
- From:
China Medical Equipment
2025;22(1):158-161
- CountryChina
- Language:Chinese
-
Abstract:
Ventilator is one of important medical equipment for the treatment of patients with critically ill. With the continuous development of medical technology,the structural performance of ventilators tends to be more precision,and the daily maintenance and repair of equipment become more important. Air-oxygen mixing is an important module of gas supply of ventilator,which structure includes access pathway of air,access pathway of oxygen and a pressurization section of air-oxygen mixing. The function of air path control is controlling air flow volume and pressure,which is basis of ensuring safe ventilation,and which includes both flow volume control system and safety valve system. Combined with the actually clinical application of ventilator,the working principles of air-oxygen mixing and air path control of the ventilator were analyzed and the maintenance methods of common faults were summarized from the key components of maintenance and repair,so as to improve the clinical service capability of ventilator equipment and the management level of hospital.
