面向自膨胀袋机械风扇,持续使用中的成熟,安全性和通风变量的可重复性
Noe Rodriguez1, Carlos Rubio1, Leonardo Barriga1
1Center for Engineering and Industrial Development, Queretaro, Mexico.
概括
本研究介绍了Ehecatl-4T机械呼吸机,这是一种自充气袋装置,提供可靠和安全的通风. 它证明了长期使用和可重复的通风变量,解决了自动袋罩通风器之前的局限性.
科学领域:
- 生物医学工程 生物医学工程
- 呼吸系统护理 呼吸系统护理
背景情况:
- 在COVID-19大流行期间,建议使用自动自充气袋 (SIB) 的机械呼吸器 (MV).
- 以前基于SIB的MV设计面临着持续使用,可变重复性和气体交换 (PaCO2,FiO2) 的挑战.
研究的目的:
- 展示一种新型的自动化SIB技术 (Ehecatl-4T MV),用于可靠,可重复和安全的机械通风.
- 验证设备在长期使用和临床前环境中的性能.
主要方法:
- 基于SIB技术的Ehecatl-4T (EHT) 机械呼吸机使用肺模拟器进行了测试,以测试不同合规性和电阻的可变重复性.
- 进行了长期耐用性测试,以评估参数稳定性.
- 一项临床前研究涉及12头猪 (87±5公斤),以评估呼吸机与患者的相互作用和气体交换.
主要成果:
- 在压力和体积模式中,EHT显示了可接受的相对误差.
- 该设备连续运行超过32天,而不影响通风变量.
- 临床前研究表明,二氧化碳 (PaCO2) 的部分压力和吸入氧气 (FiO2) 的部分压力水平接近参考值.
结论:
- 机械通风机Ehecatl-4T显示了持续使用的承诺,具有可重复的通风变量,通过实验室测试进行验证.
- 在临床前设置中的临床参数符合行业安全标准,表明安全的呼吸机-患者相互作用.
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