Tuesday, June 30, 2020

Oh, patents! UV sanitizing light with integrated motion detection (2)

Copyright © Françoise Herrmann

The award-winning invention recited in US2015343104A1 titled Radiated energy sterilization device and associated method relates to an electromagnetic UV radiation-emitting lighting system for sanitizing the frequently-used surfaces of a room, while also detecting the presence of occupants in the room. The UV radiation-emitting lighting system is designed to detect occupants in a the room, because UV radiation is generally considered harmful to skin and eyes. This invention is used in hospital settings for decontamination purposes, within the context of the prevention of HAIs (hospital-acquired infections).  However, much renewed interest for this invention now also exists within the context of the COVID 19 pandemic, currently phasing-in the re-opening of economic activity.  

The disclosed UV radiation-emitting lightbulb system with an integrated motion detection sensor was invented by the LightingScience Group Corp. A company with a large portfolio of patents and awards-winning products, connected to NASA collaborations and circadian rhythm research.

The abstract of this invention is included below, below together with the patent Figure 5, illustrating the inventive UV radiation-emitting, sanitizing lightbulb with integrated motion control. sensor. Specifically, Figure 5 depicts: the sterilization device 100, the UV emitting device 101, the detector 102, and a source of visible light 103 (on a different spectrum), so that the sterilization device 100 might function both as lighting, when the room is occupied, and as a sanitizing device when the room is vacated. This particular embodiment of the invention also includes a titanium dioxide (TiO2) dispersal system (104) for added photocatalysis, found most reactive in combination with 265 nm wavelength UV light.  

In general, the description of the invention provided in the patent is unlimited to the specified embodiments. Many different variations of the specification remain within the scope of the invention. Variations in terms of the configuration of the light bulbs, the types of sensors and objects or persons detected, the modes, intesity and duration or timing of light emission, as well as the integrated processors to control emission and detection, as well as TiO2 dispersal, when such an option is included.  

 A sterilization device comprising an ultraviolet (UV) electromagnetic radiation (EMR) emitting device, a detector configured to detect occupancy of a room associated with the sterilization device, and a controller operably connected to each of the UV EMR emitting device and the detector. The detector is configured to send a signal indicating occupancy to the controller upon a detection of occupancy. The controller is configured to operate the UV EMR emitting device to emit UV EMR only upon receiving a signal indicating no occupancy. [Abstract US2015343104A1]

References

Lighting Science Group Corp. : https://lsgc.com/

LightFair Internation 2012 (May 11, 2012) Lighting Science Group Ushers In The Light Ages With Advanced LED Lighting Intelligence, Control And Design  https://www.ledinside.com/showreport/2012/5/lsg_201205_lfi

Sunday, June 28, 2020

Oh, patents! – UV light sanitizing technology redux (1)

Copyright © Françoise Herrmann

Renewed interest exists in the use of UV (Ultra-Violet) light sanitizing technology, within the context of the COVID 19 pandemic (e.g., Cantor, 2020; Martin, 2020; IUVA Fact sheet 2020).

What is UV light sanitizing technology?

UV (Ultra Violet) light sanitizing technology, sometimes called UVC or Far-UVC light sanitizing technology, has been used for more than 40 years to remove human pathogens such as bacteria, viruses, fungi and algae from drinking water, wastewater, air, food products and various surfaces. UV light sanitizing technology is able to remove pathogens because exposure actually damages the nucleic acids of micro-organisms (Trojan UV; Rammelsberg, 1998). In other words, when the high energy of short UVC wavelengths is absorbed by cellular RNA and DNA,  it creates new double bonds called dimers, particularly Thymine dimers, which then prevent the micro-organisms (e.g., bacteria or viruses) from replicating, and thus from infecting other cells. This known neutralizing effect on the RNA and DNA of pathogens is precisely what is stoking renewed interest in UV light sanitizing technology, in the war against  the SARS-Corona virus 2. A virus that has now infected more than 4 million people on earth (IUVA Fact Sheet).

The UVC or Far-UVC light waves, used for sanitizing, are different from UVA light waves, abundantly found in sunlight, as well as from the lesser quantities of shorter UVB light waves, also found in sunlight. UVC light waves are the shortest UV light waves. However, UVC light waves become completely absorbed by the ozone layer, never reaching life on the surface of planet earth. An absorption, which is in fact welcome, since UVC light waves are generally considered more dangerous to life than UVA and UVB light waves. UVC light waves are thus only generated from man-made sources, such as mercury lamps, and more recently LED lamps, in various UV lightwave combinations of blue light, generated in the 200-280nm light spectra, for germicidal effect.

Research highlights on UV light sanitizing technology

Many studies have been carried out on the use of UV light sanitizing technology. Succinctly, the studies test: 1. the efficacy  of various UV wavelengths, fluences (doses) and exposure times for sanitation purposes (e.g.; Oguma et al. 2019; Malayeri et al 2016), and 2. safety in using UVC and far-UVC light for designed germicidal purposes (e.g.; Buonannoa et al 2017; US-HHS2016). In terms of efficacy, results indicate, for example, that varying UVC fluences, exposure times and wavelengths are variously effective in destroying hundreds of pathogens, such as for example the AdenovirusesHepatitis A, the Echovirus, the Vibrio choleraSalmonella typhimuriumStaphylococcus aureusEscherichia coli and  Heliobacter pylori.  In terms of safety,  direct contact with UV radiation (UVR) is harmful to humans (US-DHHS – NIOSH), with the apparent exception of far-UVC 200-222nm, which has tested safe on human skin cells (e.g., Oguma et al. 2019; US-DHHS2016).

Consequently, the use of different sorts of UV light sanitizing technologies variously require: 1> eyes and/or skin to be shielded, 2> indirect proximity or 3> for the technology to be used in a vacated room. This is the case, for example, in medical settings where industrial UV light sanitizing robots are used for sanitizing vacated operating and patient rooms (e.g.; Xenex Lighstrike™ Germ-zapping™ robot and Altoros disinfecting robot). UVC sanitizing technology is also generally used synergistically with other sanitizing processes, in what is called a “multi-barrier approach” to neutralizing pathogens, in part because UV sanitizing technology cannot sanitize surfaces that are obstructed, or the rear surface of an object (e.g.; Qureshi, Z. and M. Yassin 2013; Trojan UV). Alternatively, UV sanitizing technology might be used as a final step sterilization process. For example, if water cannot be sanitized completely via filtering and the adjunction of chemicals, a UV light process might be added to complete the sanitation process (IUVA). Likewise, if a surface cannot be cleaned of all pathogens with disinfectants, UV light might be used in an adjunctive mode (IUVA). Conversely, since UV sanitizing light cannot reach surfaces under an object, or through organic matter, uses of UV light are combined with prior cleaning and/or disinfection (IUVA).

Use of patented UV light sanitizing technology for air quality 

Hundreds of patents are associated with combination UV light sanitizer technology, in particular, within the context of indoor air quality. A context that is now under increased scrutiny for the crucial step-by-step approach to re-opening economies, post-COVID 19 pandemic wave of infections. For example, a search for UV sanitizing technology for air quality at the EPO (European Patent organization) returned approx.1500 patents. Likewise, several hundred patents were returned at the USPTO. 

As a case in point, the Lighting Science Group Corp, has drawn on extensive experience, designing patented lighting systems both for NASA, and within the context of circadian rhythm research, to design a new line of human-safe UVC light air-sanitizing solutions, trademarked Healthe® Cleanse®. Below, a list of the Cleanse® UVC air-sanitizing solutions for use within the context of the COVID 19 pandemic, together with just a few exemplary patents, disclosing some of the embodied inventions, among hundreds of additional patents that have been awarded to the company’s founders Drs. Fredrik Maxik and Steven Lockley. 

- Cleanse® Air SanitizingTroffers, enabling to combine lighting a room with filtering and sanitizing air, using UVA and UVC light,  targeting pathogens that may remain after HEPA-filtering. 

US8506118 – Light fixture and associated LED board and monolithinc optic.
US7528421 - Surface mountable light emitting diode assemblies packaged for high temperature operation.

US7528421 - Surface mountable light emitting diode assemblies packaged for high temperature operation.
US7824065 - System and method for providing multi-functional lighting using high-efficiency lighting elements in an environment. 
 
Cleanse® Far UVC portal
- Cleanse® human-safe Far-UVC portals, or walkthrough arches, that inactivate pathogens on skin and clothes in less than 20 seconds before a person enters a room.

- Cleanse® human-safe Far-UVC sanitizing lighting, combined with general lighting, for sanitizing surfaces and air, that can be inserted into existing canisters, always-on, or activated only when the rooms are vacated.
 
US10641476 Low profile light.
US10462874 Wavelength sensing lighting system and associated methods. 
US10267465 Downlight apparatus and associated methods of assembly.
US10212781 Wavelength sensing lighting system and associated methods. 
US10072835 Low profile light. 

Beyond air quality, and the potential for decontaminating ambient air, many other sorts of UV light sanitizing products also exists, with a renewed potential for application within the context of the COVID 19 pandemic, such as, for example:

  • sanitizing totes for decontaminating personal belongings
  • cabinets for quickly sanitizing tools and supplies
  • different sorts of UV light sanitizing wands for decontaminating surfaces, re-usable face masks, and clothes,
  • various sorts of UV sanitizing containers, such as UV sanitizing cell phone and toothbrush cases
  • UV sanitizing flashlights, lamps and bulbs
  • …plus more.

References

Altoros Disenfection Robot  - https://www.altoros.com/solutions/uvc-disinfection-robot

Buonannoa, M., Ponnaiyaa,B.,  Welcha,D.,  Stanislauskasb,M.,  Randers-Pehrsona,G., Smilenova,L.,. Lowy ,F.D.,  Owens D.M., and D.J Brenner (2017)  Germicidal Efficacy and Mammalian Skin Safety of 222-nm UV Light. Radiat Research 2017 April ; 187(4): 483–491. DOI:10.1667/RR0010CC.1 - https://bioone.org/journals/radiation-research/volume-187/issue-4/RR0010CC.1/Germicidal-Efficacy-and-Mammalian-Skin-Safety-of-222-nm-UV/10.1667/RR0010CC.1.full

Cantor, C. (April 21, 2020)  “Could a New Ultraviolet Technology Fight the Spread of Coronavirus? Columbia News. - https://news.columbia.edu/ultraviolet-technology-virus-covid-19-UV-light

Cleanse® Downlight – Far UVC sanitation illumination - https://healthelighting.com/products/cleanse-downlight

Cleanse® Air Sanitizing Troffers - https://healthelighting.com/products/cleanse-air-sanitizing-led-retrofit-troffer

Eadicicco, L. (June 15, 2020)  'Cleanse portals' that zap away germs with ultraviolet light are starting to appear as businesses begin to reopen amid the COVID-19 pandemic. Business Insider.  - https://www.businessinsider.com/uv-light-cleanse-portals-used-to-kill-germs-coronavirus-2020-6

Healthe®  by Lighting Science. - https://healthelighting.com/

Healthe® Develops Human-Safe Ultraviolet Light Solutions to Help Combat Spread of Infection, Get People Safely Back to Work.  Cleanse® Series Provides Added Protection for Hospitals, Schools, and Offices. - https://www.globenewswire.com/news-release/2020/04/29/2024174/0/en/Healthe-Develops-Human-Safe-Ultraviolet-Light-Solutions-to-Help-Combat-Spread-of-Infection-Get-People-Safely-Back-to-Work.html

IUVA (1) – International UltraViolet Association – IUVA Fact Sheet on UV disinfection for COVID 19. - https://iuva.org/IUVA-Fact-Sheet-on-UV-Disinfection-for-COVID-19

IUVA (2) Advice for the selection and operation of equipment for the UV disinfection of air and surfaces. - https://iuva.org/Advice-selection/operation-of-equipment-for-the-UV-disinfection-of-air-and

Lighting Science Group Corporation  (now Healthe®) – Patents. - https://lsgc.com/patents/

Lighting Science Group Corporation announces issuance of 35 patents. https://www.businesswire.com/news/home/20160202006068/en/Lighting-Science%C2%AE-Announces-Issuance-35-New-Patents

Malayeri, A.H.,Mohseni, N. Cairns B. and J.R. Bolton (2016) Fluence required to achieve incremental log inactivation of bacteria, protozoa, viruses and algae. IUVA NEWS  13(3), 4-6.   https://www.ews.com.gt/user_files/uploads/UV_Dose_List_IUVANews_Fall2016_UVSensitivityReview_full.pdf

Martin, H. (June 23, 2020) His plane disinfecting invention didn’t take off --until COVID 19 hit. Los Angeles Times. - https://www.latimes.com/business/story/2020-06-23/plane-disinfecting-honeywell-covid-19

Oguma, K., Ratanacul, S. and M. Madaike (2019) Inactivation of health-related microorganisms in water using UV light-emitting diodes. Water Supply (2019) 19 (5): 1507–1514. - https://doi.org/10.2166/ws.2019.022   https://iwaponline.com/ws/article/19/5/1507/65644/Inactivation-of-health-related-microorganisms-in

Ohnaka, T. (1993) Health effects of UVR (Ultraviolet Radiation). Ann Physiol Anthropol. 1993 Jan;12(1):1-10. DOI: 10.2114/ahs1983.12.1  - https://pubmed.ncbi.nlm.nih.gov/8507288/

Qureshi, Z. and M. Yassin (2013) Role of Ultraviolet (UV) Disinfection in Infection Control and Environmental Cleaning. Infect Disord Drug Targets- 2013 Jun;13(3):191-5. DOI:10.2174/1871526511313030007  - https://pubmed.ncbi.nlm.nih.gov/23961739/

Rammelsberg, A. (Aug. 17, 1998) How does UV light kill cells? Scientific American.  - https://www.scientificamerican.com/article/how-does-ultraviolet-ligh/

Trojan UV - Introduction to UV disinfection. -  https://www.trojanuv.com/uv-basics?acceptCookies=1

US-DHHS (2016) Ultraviolet-Radiatio-Related-Exposures- 14th Report on Carcinogens, Nov. 3, 2016) - National Toxicology Program -  Department of Health and Human Services.  - https://ntp.niehs.nih.gov/ntp/roc/content/profiles//ultravioletradiationrelatedexposures.pdf

US-DHHS – NIOSH Ultraviolet Radiation and the Work Environment (Revised. See: 74-121). -  https://www.cdc.gov/niosh/docs/73-11005/default.html

Xenex Disinfection Services - LightStrike™ Germ-Zapping™ Robots.  - https://www.xenex.com/our-solution/lightstrike/

Sunday, June 21, 2020

Terminology - Face shields (visières de protection) (8) HappyShield (UK and AU)

Copyright © Françoise Herrmann

The University of Cambridge (UK), Department of Architecture, Natural Material Innovation Group, and The University of Queensland (Australia), School of Engineering Folded Structures Lab, jointly designed a face shield, designated the HappyShield (logo included). The HappyShield is further characterized as “Curved crease origami face shield for infection control”. The HappyShield was created within the context of the COVID 19 pandemic, in response to the shortage of PPE (Personal Protection Equipment).

The HappyShield design comprises a single sheet of 0.5 mm-thick PET or Acetate, which is curved-crease-folded twice to provide extra protection from fluids and sprays, coming from above. Once double-creased, the face shield distance from the user’s face is also adjustable. A 20 mm wide elastic strap, threaded through attachment holes, on each side of the shield, alternatively through friction clips first, secures the HappyShield to the user’s head. The HappyShield is intended to be easily washable for decontamination, and re-usable between shifts.

 The HappyShield was designed specifically for ultra swift, mass-manufacture, at low cost, keeping in mind global disruptions in supply chains, and the greater impact in less-wealthy countries. Thus, the Happyshield design supports several production processes, in particular: Hand-creasing, Laser cut, and Laser-cut + pressure creasing.

An image of the HappyShield Hand creasing template, extracted from the GitHub project files, is included below, together with an image of the assembled HappyShield. A Youtube video is also included to show the various features and assembly of the HappyShield. Incidentally, the GitHub project files also contain many Instagram widgets to illustrate instructions and various aspects of the HappyShield




References

GitHub HappyShield documentation files: https://github.com/HappyShield/happyshield.github.io

Github HappyShield project:https://happyshield.github.io/en/

GitHub HappyShield template files: https://github.com/HappyShield/HappyShield

The University of Cambridge (UK) - Department of Architecture - The Natural Material Innovation Group: https://www.natmat.group.cam.ac.uk/

The University of Queensland (AU) - School of Engineering - Folded Structures Lab.   https://www.civil.uq.edu.au/icarus/folded-structures-lab-various-topics 

YouTube video of the HappyShield: https://youtu.be/NzHtaLhImxM

Saturday, June 20, 2020

Terminology - Face Shields (visières de protection) (7) 3DVerkstan (Sweden)

Copyright © Françoise Herrrmann

The Swedish 3D design firm 3DVerkstan also created a face shield design, addressing the shortages of PPE (Personal Protection Equipment), within the context of the COVID 19 emergency situation.  The 3DVekrstan design, designated Protective Visor, is downloadable, via Github, worldwide for free, in several different versions, depending on regional standardized sheet sizes, and hole-punch: Sweden (4-hole punch, A4 sheet), European (2 hole punch, A4 sheet) and North America (3-hole and 6-hole punch, letter size).  

The design consists of two parts, a 3D printed headband and a sheet of plastic with the appropriate combination, size and distance of punched holes, in view of securing the sheet to the headband.  The 3DVerkstan Protective Visor supports the use of a rubber band in the back to adjust the headband, according to head circumference. To accelerate printing, the headband design is also stackable.    

Below, specification of the 6-hole punch, North America, 3DVerkstan Protective Visor design, extracted from the GitHub Protective Visor by 3DVerkstan Template and Instructions sheet, and an image of the assembled and fabricated 3DVerkstan Protective Visor.

3D Verkstan 6-hole plastic visor sheet  and 3D-printed headband

3DVerkstan 6-hole North America Protective Visor

Incidentally, the 3DVerkstan Protective Visor design was selected by American architectural firms nationwide, after being initially contacted by the Dean of the School of Architecture at Cornell University (Cassidy, 2020). The emergency call sent out to architectural firms was initiated, because the demand for PPE in New York City (NYC) was just too high, beyond the Weill Cornell Medical facilities, already procured by the Cornell School of Architecture. At one point, the need for face shields in NYC was estimated at 20,000 to 30,000 per day. Thus, architectural firms such as KPF (Kohn Pedersen Fox) and BIG (Bjarke Ingels Group) jumped on board, converting rapid prototyping 3D machines to the production of face shields for use as PPE in NYC, while setting the trend for other firms to follow suit, elsewhere.

References

3DVerkstan (Sweden)  https://3dverkstan.se/protective-visor/

BIG (Bjarke Ingels Group): https://big.dk/#projects

Cassidy, R. (April 4, 2020) COVID-19: Architecture firms churn out protective face shields using their 3D printers    https://www.bdcnetwork.com/covid19faceshieldroundup040420

GitHub 3DVerkstan Protective Visor files: https://github.com/Cederb/Faceshield.nu/

Github 3DVerkstan Protective Visor Instructions and template – North America 6-hole  https://github.com/Cederb/Faceshield.nu/blob/master/North%20America%206-hole/US_Face_Shield_Instructions_%26_US_6_Hole_Template.pdf

KPF (Kohn Pedersen Fox) https://www.kpf.com/

Molitch-Hou, M. (April 6, 2020) 3DPrint Safety recommendation for 3D printed COVID medical devices Pt.1 - https://3dprint.com/265620/safety-recomendations-for-3d-printed-covid-19-medical-devices-part-one/

Friday, June 19, 2020

Terminology - Face shields (visières de protection) (6) MIT

Copyright © Françoise Herrmann

The disposable MIT face shield is laser die-cut from a single sheet of polycarbonate plastic. It was designed, using low-cost materials, and high-precision machinery for high-velocity mass-production, to meet the critical demand for PPE (Personal Protection Equipment), within the context of the COVID 19 emergency (Gallagher, 2020).

The single-sheet, MIT face shield, design includes a protective foam strip for the forehead, and two smaller foam strips, used to secure two strop-bent elastics, on each side of the headband. The elastics are ouchless (hair-band type).

The assembly, consisting of bending and folding the polycarbonate plastic sheet, strop-bending the elastics, and securing them to the headband with foam pieces, takes less than 60 seconds. The side of the polycarbonate sheet, without a peel-off protective film, has an anti-fog coating. The MIT face shield includes forehead and chin flaps designed to provide 40% more protection than typical disposable face shields. The sides of the shield are also articulate to enable the use of non-wireless stethoscopes. 

The first, 100,000, face shields were donated to hospitals, emergency medical management facilities, and emergency care services, in Boston, MA.

Below, drawings of the flat sheet and assembled MIT face shield, extracted from the Technical specifications, together with a Youtube video demonstration, showing how the MIT face shield is folded and assembled.  

 

 

References

Gallagher, M. B. (March 31, 2020) MIT initiates mass manufacture of disposable face shields for Covid-19 response. MIT News.   http://news.mit.edu/2020/face-shield-ppe-manufacture-covid-19-0331

Learn about and obtain the MIT COVID-19 face shield.  https://project-manus.mit.edu/fs-health

MIT COVID 19 face Shield Folding Instructions and Technical Specifications.   https://project-manus.mit.edu/wp-content/uploads/2020/05/Faceshield-Instructions_v1.14b-and-Tech-SpecsEUA-1.pdf

YouTube: Folding instructions: https://www.youtube.com/watch?v=Ydr0a7P63zY

Thursday, June 18, 2020

Terminology - Face shields (visières de protection) (5) Ratnayake (Studio Lo)


Copyright © Françoise Herrmann

Pano chair (2008)
 Ratnayake
Pano Chair (2008)
Aruna Ratnayake, the well-known, Studio Lo  designer-maker of the folded Pano Chair (2008), also posted a free downloadable face shield design, in response to shortages of PPE (Personal Protective Equipment), arising out of the COVID 19 emergency situation. The Ratnayake face shield design is called the Folded Face Shield (2019). 

Widely used, fabricated, and distributed to individuals-in-need by the Fab City Metropolitan Paris makers’ lab, in France, and elsewhere, the Aruna Ratnayake face shield is a laser-cut only design. The face shields are fabricated and assembled super swiftly, using a laser cutter to cut out the double headbands, which are then folded and assembled, together with the visor and elastic band. 

The  Ratnayake Folded Face Shields  are made out of: 
  • a cutout sheet of PET or polypropylene (0.5 -1.5 mm thick, 720 x 250 mm) for 11 double headbands
  • a sheet of Rhodoid plastic (A4) for the visor
  • an elastic band
Below, the GitLab specifications for the Ratnayake Folded Face Shield design, and a Volumes YouTube video showing the production and assembly lines of the Ratnayake face shields.

Ratnayake
Folded Face Shield (2019) 



References
Aruna Ratnayake and  Eva Guillet (2013) In Green Design: Creative Sustainable Designs for the Twenty-First Century  by Marcus Fairs, p. 100-101, London, UK: Carlton Bks Ltd.`
GitLab - Folded Face Shield - Project ID 17819258https://gitlab.com/volumes1/visi-re-plexi-volumes

Wednesday, June 17, 2020

Terminology – Face shields (visières de protection) (4) Makers (FR)

Copyright © Françoise Herrmann

In France, a vast “underground” volunteer network of makers designed, fabricated, and donated several hundred thousand face shields (Leloup, April 23, 2020). They fulfilled orders locally, throughout France, for both medical personnel at hospitals and nursing homes, and other frontline workers, such as pharmacists, private healthcare practitioners, bakers, grocery store personnel, and police officers.

Using 3D printers for the headband and a sheet of transparent plastic, alternatively a laser cutting machine for visors and headbands made of plastic sheets only, more than 250,000 face shields were donated, with many more requests queued for the on-going re-opening of the economy. According to O1Net, some 300  existing maker labs (part of the Fablabs network in France), and a few thousand more independent makers, were mobilized. 

New maker labs and initiatives also sprung to action, specifically in response to the COVIID 19 pandemic shortages of PPE (Personal Protection Equipment). For example, new maker labs such as Visière Solidaire, MakerscovidParis, Covid3D, Makers contre le Covid, were created, as well as a new program, the OPEN COVID 19 Initiative,  launched using the JOGL platform, A multi-faceted program, designed to bring together COVID 19-related projects, resources (including microcredit), volunteers, partners, and enablers.

A new platform www.covid3D.fr was also developed and launched, almost overnight, bringing together (per the interface counters) 9980 volunteer makers, who donated 205882 face shields to individuals requesting, from all regions in France, as well as French-speaking countries (1). The advantage of the platform developed was that no middle person existed between makers and the individuals requesting face shields. The software handled the matching of production capacity with requests, according to location, in a few easy steps. In other words, makers specified their production capacity, while those individuals requesting face shields specified the quantities they needed. Once a match occurred, phone numbers were unmasked and both parties worked out the details for safe delivery, usually in person, and locally, in compliance with distancing rules. The platform also welcomed high-in-demand donations of plastic sheets, and 3D ink for the headbands.

Finally, the Fabricommuns.org platform was also created, where the most comprehensive information was posted to provide liability guidelines to face shield makers. Legal information, considering donation vs. sale of PPE, and recent (DGE  April 23, 2020DGE April 30, 2020 ) simplified emergency standards that the French administration developed for donated face shields.  For example, guidelines and explanations were provided  (Villeret, 2020), in regards to the following (and much more):

-  COVID 19 marking, valid through August 31, 2020, vs. CE certification marking, as a form of simplified standardization

-  labeling designed to inform users that the face shields protect against splashes and droplets. In other words, labeling that in fact serves to clarify the differences between face shields and face masks, since face masks are designed to protect against inhalation of aerosols, whereas face shields are designed to protect against liquid splashes and droplets. Consequently, face shields are designed for use together with face masks, since they do not prevent absorption of aerosols via the upper respiratory tract. Most importantly, face shields should never be used to replace face masks.

- inserts specifying recommended sterilization procedures for the face shields, since safety precautions, taken during the maker process, are not intended to result in a sterile product for healthcare professionals.

In terms of the actual designs of the face shields, several open-source, 3D, and laser-cut only, designs were downloaded by the French makers (e.g., Maker Models). The designs were mostly un-validated, due to the emergency situation, but certainly updated with feedback from medical personnel, and other frontline workers, benefitting from the donations.

Below, one of the open-source 3D face shield designs used, produced and donated by the French Fablab makers. This 3D model is called Visière Solidaire. The design comprises several parts: 

  •  3D-printed headband
  •  three 3D-printed clips, used to secure the visor onto the headband
  •  clear plastic visor, and
  •  two elastic bands, used to fit the headband and visor on the user's head. 

Two STL (3D stereolithographic) files of the headband and clips are included in the mosaic below, together with Images of the printed parts, and assembled face shield product.



In France, according to 01Net, if there are lessons to be learned from the extraordinary volunteer maker response to the COVID19 emergency PPE shortfall, it is that perceptions of maker activity have changed. From prototype specialists, repair technicians and small volume manufacturers, makers were able to organize into a full-blown procurement network of organized producers and distributors. An incredibly efficient, distributed supply chain was created, able to fulfill orders everywhere, until shuttered industrial facilities could adapt, re-open, and take charge. 

_____________

Note (1)  A notice is now posted on the www.covid3D.fr platform, indicating that, the www.covid3D.fr  platform has been permanently terminated. The abrupt termination apparently arises in a stressful effort to protect makers and platform designers from possible lawsuits. Lawsuits that might arise in connection with any perceived absence of conformity with the new  (adapted) standards (DGE - April 30, 2020)  that were developed for COVID 19 donated face shields. 

References

01Net (April 22, 2020) L’incroyable mobilisation des makers pour fournir du matériel de protection aux soignants.  https://www.01net.com/actualites/l-incroyable-mobilisation-des-makers-pour-fournir-du-materiel-de-protection-aux-soignants-1894999.html

Covid3D: https://www.covid3d.fr/

DGE - April 23, 2020: https://www.entreprises.gouv.fr/files/files/home/2020_63.pdf

DGE - April 30, 2020: https://www.entreprises.gouv.fr/files/files/note-d-information-visiere-30-avril-020.pdf

Fabricommuns: https://fabricommuns.org/

Leloup, D. (April 23, 2020) Les visières de protection imprimées 3D: Une réponse des makers à la crise – Le Monde.  https://www.lemonde.fr/pixels/article/2020/04/23/les-visieres-imprimees-en-3d-une-reponse-des-makers-a-la-crise-sanitaire_6037538_4408996.html

Maker models (face shields):  https://docs.google.com/spreadsheets/d/1pqexuyiwQwJ9rH8impv5KVcy5DEidWMJMB4vQYGqkks/edit#gid=1781920509

MakerZine #1:  https://online.pubhtml5.com/krtg/ufax/?fbclid=IwAR0wLxwARv9XT_VGxdZg0OWI-Z-3p_WnrHW8rR5I13XbEkOsq1IIgW6f1XE

MakersCovidParis:  https://makerscovid.paris/

Makers contre le Covid: https://www.facebook.com/groups/1120744844933688/

Open COVID-19 Initiative: https://app.jogl.io/program/opencovid19

Réseau francais des FabLabs (RFFLabs): http://www.fablab.fr/

Villeret, C.  (May 12, 2020) Réalisation de visières de protection: Nouvelles normes et loi impactant les makers.  https://fabricommuns.org/2020/05/12/realisation-de-visieres-de-protection-nouvelles-normes-et-loi-impactant-les-makers/

Visière Solidaire: https://visieresolidaire.org/fr/

Monday, June 1, 2020

Terminology - Face shields (visières de protection) (3) Yoshioka (JP)

Copyright © Françoise Herrmann

The renowned Japanese designer of the Olympic torch for the postponed 2020 Tokyo Olympic and Paralympic relays, Tokujin Yoshioka, also designed a face shield, within the context of the COVID 19 shortage of PPE (Personal Protection Equipment). The template for the face shield (included below) was released for free online. Yoshioka called his design Easy-to-make FACE SHIELD because it is a three-step process that requires no fabrication machinery, or even an amateur 3D-printer. Yoshioka was motivated to create and share his design out of gratefulness to frontline healthcare workers, fighting COVID 19. Yoshioka's hope was that the design might be of use, during the emergency shortfall (The Japan Times, April 16, 2020).


The Yoshioka easy-to-make face shield comprises just one part: a piece of PET or like PVC sheet with a thickness of approx.. 2 mm. The Yoshioka face shield can be made at home by anyone with the required PET or PVC film, a pair of scissors, and a small cutting blade. Because the Yoshioka face-shield ingeniously requires the use of eyeglasses to secure the visor in place, covering the user’s face, the Yoshioka easy-to-make face shield also requires a pair of spectacles for use.

Below, the Youtube video where Yoshioka demonstrates the fabrication of his clever easy-to-make face shield.

References
The  Japan Times (April 16, 2020) - Olympic torch designer shares DIY face shield for health care workers.
https://www.japantimes.co.jp/news/2020/04/16/national/diy-face-shield/#.XtO8xTBKh10
Tokujin Yoshioka (website)
https://www.tokujin.com/
Youtube video – Tokujin Yoshioka 3-step easy-to-make face shield design
https://youtu.be/pRTTjCkuDUM