Disposable Transparent Face Visor PPE
Research into COVID-19 has shown the increased transmission through close contact and droplets. As such, clinicians and health professionals that interface regularly with the infected require more protection. Droplet infection occurs through respiratory droplets, classified when they are >5-10 μm in diameter(WHO, 2014). This transmission occurs when <1m in distance from the infected. As South Africa braces for an increase in the amount of infected patients taken in by hospitals, soon there will be far little space between doctors and clinicians.
South Africa could see a rise to 700,000 cases with the implemented lockdown procedures and this is if the disease is well managed (Dinham, 2020). The increased prevalence of sick patients will place doctors under high amounts of stress and will have to deal with multiple patients. Due to the highly infectious nature of the virus, protection of clinicians when dealing with these patients are a high priority. As the virus causes coughing and sneezing from patients, there is high transmission of these respiratory droplets. WHO (2020), recommends eye protection and protection of mucous membranes from exposure to respiratory droplets.
Currently, the proposed solutions are face visors or goggles, used with respiratory protection in the forms of masks or respirators. While there are a number of solutions available, there is a demand for easy to use and cost effective PPE. Recent facemasks that are rapidly developed require the implementation of 3D printed visor holders. However there are a number of foam and transparent designs that have been implemented by hospitals across the United States of America. One of these is the BAUER face mask which has been used as a reference along with the Corran face shield design. This is a highly cost effective and easy to manufacture design.
The device is being approved by SAHPRA and has taken two forms. The slightly smaller shield size non-clinical design, as well as the larger clinical visor. See: https://youtu.be/W58D3KHZeHs
Advantages : Minimal skills required. Takes about 5 minutes to make 1 device. Can be made on site. Completely disposable. Great opportunity for local job creation.
This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License. It is aderivative of the Corran Face Shield (http://aseptium.com/corran/) designed by 4c Engineering &Aseptium Ltd both of Inverness, Scotland, that is available under the Creative Commons Attribution-ShareAlike 2.5 UK Scotland License (https://creativecommons.org/licenses/by-sa/2.5/scotland/). This work is also inspired in part by the Bauer Medical Face Shield that is available for public use (https://www.bauer.com/).
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