Jumlongkul Arnon
School of Medicine, Mae Fah Luang University, Chiang Rai, Thailand.
Front Robot AI. 2021 Jan 29;7:621580. doi: 10.3389/frobt.2020.621580. eCollection 2020.
It is now clear that the COVID-19 viruses can be transferred via airborne transmission. The objective of this study was to attempt the design and fabrication of an AMBU ventilator with a negative pressure headbox linked to a negative pressure transporting capsule, which could provide a low-cost construction, flexible usage unit, and also airborne prevention that could be manufactured without a high level of technology. The machine consists of an automated AMBU bag ventilator, a negative pressure headbox, and a transporting capsule. The function and working duration of each component were tested. The two main settings of the ventilator include an active mode that can be set at the time range of 0 s-9 h 59 min 59 s and a resting mode, which could work continuously for 24 h. The blower motor and battery system, which were used to power the ventilator, create negative air pressure within the headbox, and the transporting capsule, could run for at least 2 h without being recharged. The transporting capsule was able to create an air change rate of 21.76 ACH with-10 Pa internal pressure. This automated AMBU ventilator allowed flow rate, rhythm, and volume of oxygen to be set. The hazardous expired air was treated by a HEPA filter. The patient's transporting capsule is of a compact size and incorporates the air treatment systems. Further development of this machine should focus on how to link seamlessly with imaging technology, to verify standardization, to test using human subjects, and then to be the commercialized.
现在很清楚，新冠病毒可通过空气传播。本研究的目的是尝试设计并制造一种带有与负压输送舱相连的负压头箱的急救复苏（ambu）呼吸机，该呼吸机可提供低成本构造、使用灵活的装置，还能在无需高技术水平的情况下进行空气传播预防。该机器由一台自动急救复苏气囊呼吸机、一个负压头箱和一个输送舱组成。对每个部件的功能和工作时长进行了测试。呼吸机的两个主要设置包括可在0秒至9小时59分59秒的时间范围内设置的主动模式和可连续工作24小时的休息模式。用于为呼吸机供电的鼓风机电机和电池系统在头箱内产生负压，输送舱在不充电的情况下可运行至少2小时。输送舱能够在内部压力为-10帕时产生21.76次/小时的换气率。这种自动急救复苏呼吸机可设置氧气流速、节律和量。有害的呼出空气由高效空气过滤器处理。患者输送舱尺寸紧凑，并集成了空气处理系统。该机器的进一步研发应侧重于如何与成像技术无缝连接、验证标准化、进行人体试验，然后实现商业化。
