中国医疗设备2025，Vol.40Issue(7)：6-9,4.DOI:10.3969/j.issn.1674-1633.20241143
线性气阻对呼吸机容量控制的影响
Influence of Linear and Parabolic Air Resistance on the Capacity Control of Ventilator
摘要
Abstract
Objective To discuss the influence of linear and parabolic air resistance on the capacity control of ventilator according to the new requirements of GB 9706.212-2020 standard for control accuracy,and provide guidance for optimizing the control algorithm and detection specification of ventilator.Methods In this paper,the hydrodynamic characteristics of linear and parabolic impediments and their effects on the control accuracy of tidal volume were compared by ventilator ventilation experiment.Results The experimental results showed that the control error of a ventilator was 9.6%when using parabolic resistance under R5 conditions.When linear resistance was used,the control error increased to-39.0%,and the flow value in the airway decreased significantly.Tidal volume control behaves differently with different resistance settings,especially at low resistance settings where linear resistance resistance may lead to large tidal volume errors.Conclusion Simulated pulmonary resistance can affect the accuracy of tidal volume output of ventilators.Manufacturers need to optimize the control algorithm according to the new standard to ensure that the equipment meets the requirements.关键词
呼吸机/线性气阻/非线性气阻/潮气量控制/肺阻力Key words
ventilator/linear resistance/parabolic resistance/tidal volume control/pulmonary resistance分类
医药卫生引用本文复制引用
侯晓旭,孟祥峰,李澍..线性气阻对呼吸机容量控制的影响[J].中国医疗设备,2025,40(7):6-9,4.基金项目
国家重点研发计划课题(2022YFC2402604). （2022YFC2402604）
