Mwema F M, Nyika J M
Department of Mechanical Engineering, Dedan Kimathi University of Technology, Nyeri, Private Bag, 10143, Kenya.
Department of Geoscience and the Environment, Technical University of Kenya, Nairobi, Kenya.
Sci Afr. 2020 Nov;10:e00563. doi: 10.1016/j.sciaf.2020.e00563. Epub 2020 Sep 24.
The emergence of the novel Coronavirus has forced most governments across the world to enact stringent public laws to curb its transmission among the populations. The requirement to wear a facemask whenever in public places is one of such laws. As such, the demand for such masks has escalated across the world and this predisposition has presented a manufacturing challenge to the developing countries, which have limited capacity to meet the demand for their large populations. In developing countries such as Kenya, the citizens are now required to wear facemasks when in public places such as markets, streets, shopping malls, etc. With limited supply of the proper facemasks in the developing countries, the public is left to improvise them from the available resources. Alternatively, they purchase substandard facemasks from uncertified suppliers and sellers. The purchased masks do not meet the required health standards in most cases. In Kenya, for example, the government has been discouraging citizens from using N95 respirators and instead preserve them for medical practitioners due to their rarity and incapacity to manufacture them. The government has certified several textile industries to produce facemasks for the public from non-woven fabric materials. The challenge with such a move is that there has been an influx of an assortment of facemasks in the Kenyan market and it is not possible for the citizens to identify the safe ones. In this short communication, a brief description of the challenges facing the citizens in terms of access to and quality of face masks in developing countries, with a case study of Kenya is provided. Furthermore, a proposed design solution and a proof of concept of a low-cost and reusable 3D printed facemask for developing economies is herein presented. The adoption of such a design by the governments and manufacturers would solve the challenges of access and quality of the respirators to lower the transmissions of the Coronavirus.
新型冠状病毒的出现迫使世界上大多数政府颁布严格的公共法律,以遏制其在人群中的传播。在公共场所随时佩戴口罩的要求就是此类法律之一。因此,全球对这类口罩的需求激增,这种倾向给发展中国家带来了制造方面的挑战,因为这些国家满足其大量人口需求的能力有限。在肯尼亚等发展中国家,现在要求公民在市场、街道、商场等公共场所佩戴口罩。由于发展中国家合适口罩的供应有限,公众只能利用现有资源自行制作。或者,他们从不合格的供应商和卖家那里购买不合标准的口罩。在大多数情况下,购买的口罩不符合所需的健康标准。例如,在肯尼亚,由于N95口罩稀缺且本国无法生产,政府一直不鼓励公民使用,而是将其留给医护人员使用。政府已认证几家纺织企业用无纺布材料为公众生产口罩。此举面临的挑战是,肯尼亚市场上涌入了各种各样的口罩,公民无法辨别哪些是安全的。在这篇简短的通讯中,以肯尼亚为例,简要描述了发展中国家公民在获取口罩和口罩质量方面面临的挑战。此外,本文还提出了一种针对发展中经济体的低成本、可重复使用的3D打印口罩的设计方案和概念验证。政府和制造商采用这种设计将解决呼吸器的获取和质量问题,以降低冠状病毒的传播。