论文标题

动态通风电路分隔器:乘以可用呼吸机数量的更安全的方法

Dynamic Ventilatory circuit divider: Safer way to multiply the number of available ventilators

论文作者

Mazhar, Rashid, Chowdhury, Muhammad E. H., Ramzee, Ahmed Faidh, Raza, Tasleem, Al-Hashemi, Abdulaziz Ahmed

论文摘要

背景:最近的大流行引起了世界各地机械呼吸机的需求。在这种背景下,人们对寻找单个呼吸机的多名患者的方法有广泛的兴趣。描述了基于呼吸机管的简单机械划分的各种溶液。但是,最近有多个国际专业社会对这些管道解决方案发出警告,因为它可能会严重损害患者。 方法:我们已经分叉了单个呼吸机的灵感和呼气导管,并添加了单向阀,压力和流动传感器以及体积和窥视控制。专门构建的软件和基于低成本微控制器的控制系统将数据集成并以熟悉的通气图形和数值格式显示到通用屏幕上。该系统用具有不同依从性的模拟肺进行校准。除了标准的微生物,热量和水分交换器过滤器外,我们设计的是在呼气通道中以254-260纳米波长添加UV-C灯,以使其病毒效应。 结果:动态通风分隔系统能够为个别患者提供和控制个体流动,潮汐体积(TV)和急诊式压力(PEEP)。此外,它还以熟悉的格式在单个拆分屏幕上显示两名患者的通气参数。 FIO2和速率仍由母呼吸机控制。 结论:原型系统有可能向至少两个来自单个呼吸机的人提供安全通风,同时保持每个患者的独特要求。

Background: Recent pandemic has brought a sudden surge in the requirement of mechanical ventilators all over the world. In this backdrop, there is wide interest in looking for ways to support multiple patients from a single ventilator. Various solutions, based upon simple mechanical division of the ventilator tubings are described. However, recently warnings have been issued by multiple international professional societies against these plumbing solutions as it can seriously harm the patients. Methods: We have bifurcated the inspiratory and expiratory conduits from a single ventilator with addition of one way valves, pressure and flow sensors along with volume and PEEP control. A purpose-built software and a low-cost microcontroller based control system integrates and displays the data in the familiar ventilatory graphic and numerical format onto a generic screen. The system is calibrated with simulated lungs with varying compliance. In addition to the standard microbial, heat and moisture exchanger filters we design to add UV-C lights at 254-260 nanometre wavelength in the expiratory channel for its virucidal effect. Results: The dynamic ventilatory divider system is capable of providing and controlling individual flow, tidal volume (TV) and Positive End-expiratory pressure (PEEP) for individual patients. Furthermore, it would also display the ventilatory parameters of both the patients, on a single split screen, in a familiar format. FiO2 and rate are still controlled by the mother ventilator. Conclusions: The prototype system has a potential to provide safe ventilation to at least two individuals from a single ventilator, while maintaining the unique requirements of each patient.

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