Imbrie-Moore Annabel M, Park Matthew H, Zhu Yuanjia, Paulsen Michael J, Wang Hanjay, Woo Y Joseph
Department of Cardiothoracic Surgery, Stanford University, Stanford, CA 94305, USA.
Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, USA.
Healthcare (Basel). 2020 Jul 23;8(3):225. doi: 10.3390/healthcare8030225.
The need for personal protective equipment during the COVID-19 pandemic is far outstripping our ability to manufacture and distribute these supplies to hospitals. In particular, the medical N95 mask shortage is resulting in healthcare providers reusing masks or utilizing masks with filtration properties that do not meet medical N95 standards. We developed a solution for immediate use: a mask adaptor, outfitted with a quarter section of an N95 respirator that maintains the N95 seal standard, thereby quadrupling the N95 supply. A variety of designs were 3D-printed and optimized based on the following criteria: seal efficacy, filter surface area and N95 respirator multiplicity. The final design is reusable and features a 3D-printed soft silicone base as well as a rigid 3D-printed cartridge to seal one-quarter of a 3M 1860 N95 mask. Our mask passed the computerized N95 fit test for six individuals. All files are publicly available with this publication. Our design can provide immediate support for healthcare professionals in dire need of medical N95 masks by extending the current supply by a factor of four.
在新冠疫情期间，对个人防护装备的需求远远超过了我们向医院生产和分发这些物资的能力。特别是，医用N95口罩短缺导致医护人员重复使用口罩，或使用过滤性能不符合医用N95标准的口罩。我们开发了一种可立即使用的解决方案：一种口罩适配器，配备了符合N95密封标准的四分之一部分N95呼吸器，从而使N95供应量增加了三倍。基于以下标准对多种设计进行了3D打印和优化：密封效果、过滤表面积和N95呼吸器的复用性。最终设计是可重复使用的，具有3D打印的软硅胶底座以及用于密封3M 1860 N95口罩四分之一部分的刚性3D打印滤芯。我们的口罩通过了针对六个人的计算机化N95适配测试。所有文件随本出版物一同公开提供。我们的设计可以通过将当前供应量扩大四倍，为急需医用N95口罩的医护人员提供即时支持。
