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开发和初步测试用于门诊的便携式体积表管仪

Francisco Ubaldo Vieira Junior^1,2, Denilson Antônio Marques³, Natalie Camila Dos Reis Silva³

¹. Instituto Federal de Educação, Ciência e Tecnologia de São Paulo - IFSP - Campus Campinas, Campinas (SP) Brasil.

Jornal brasileiro de pneumologia : publicacao oficial da Sociedade Brasileira de Pneumologia e Tisilogia

|December 19, 2025

概括

一个新的便携式体积测量仪 (Capnograph) 准确地测量了自发呼吸期间的通风机制. 这种设备与参考设备进行了验证,在门诊使用中提供了同等的性能.

科学领域:

呼吸系统生理学呼吸系统生理学
医疗设备工程医疗设备工程
肺部诊断肺部诊断肺部诊断

背景情况:

精确测量通风机制对于评估呼吸系统健康至关重要.
现有的监测自发呼吸的设备对于门诊机构来说可能很麻烦.
需要开发便携式设备,以促进持续或频繁的监控.

研究的目的:

开发和验证一个便携式的体积测量电图仪.
为了能够在自发呼吸过程中收集有关呼吸机械的数据.
为呼吸监测提供门诊患者友好的解决方案.

主要方法:

集成商用传感器 (流量,压力,二氧化碳) 与微控制器.
开发了一个使用Python在100 Hz的数据采集系统.
通过静态测试验证了设备,并与健康志愿者的参考氧化摄影进行了比较.

主要成果:

静态测试表明流量和二氧化碳的线性相关性很好.
在志愿者中,便携式设备和参考设备之间没有发现显著差异.
观察到卡普诺图曲线的循环内变异性,反映了自发呼吸生理学.

结论:

便携式体积写仪在自发呼吸过程中准确地收集流量和CO2数据.
设备的性能相当于已建立的参考设备.
隐形图曲线的可变性是自发呼吸的内在特征,需要在算法开发中考虑.

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