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Changes to Bunny Science™ PAPR Introduction

Edit by Guy Kuo

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Introduction
MD Anesthesiologist. [ … ] The COVID-19 pandemic has created severe shortages of protective airway equipment. Providers are forced to forego adequate personal protection due to dwindling PAPR, CAPR, and N95This is not a mask supply. Masks nor face shield, but a full protective PAPR (Powered Air Purifying Respirator). It solves issues that should be single use are being ad-hoc sterilized and reused. plague not only DIY masks but also commercial N95 masks. [ … ] It1. Perfect face fit requirement: A mask which does not form a perfect facial seal is in response to this emergent need, that I have released the ''Bunny Science HALO PAPR''. of no use for protection against aerosolized threat. Some simply cannot use an N95 mask because they cannot pass N95 fit testing against leaks. [ … ] TheBunny Science Halo is intended PAPR isolates user via positive pressure instead hoping for a perfect seal. [ ] 2. Filter material must be effective against viral threat and be safe to achieve protection by keeping breath through. The filter material must also be mounted without any leaks around the users entire head in a positive pressure, clean gas environment. Its disposables material. [ ] Halo PAPR uses commonly available (in hospitals) anesthesia circuit viral filters. These filters are easily found.. FDA approved and provide better than N95 filtering. [ … ] 3D parts files can be downloaded from... https://www.thingiverse.com/thing:4243272 or https://www.prusaprinters.org/prints/27657-halo-buildable-papr-powered-air-purifying-respirat [ … ] Video Intro https://www.youtube.com/watch?v=MvbcmaCIgKk [ … ] I have applied my 30 years ofDesign Highlights [ ] * Provide clean breathing air via FDA approved, ventilator viral filter or medical experience, familiarity with ventilation, air/oxygen * Completely cover head and design skills face to create protect against airborne COVID risks * Use positive pressure to maintain protection even without a perfect seal * Use disposables that are readily available * Field buildable [ ] Barrier is a polyethylene bag placed over head and test this respirator. BS secured around neck. PAPR Halo repurposes an FDA approved ventilator filter to provide clean breathing air. Because it provides airtight penetrations through the bag for inspiration and expiration. Breathable environment is powered, user need not work at positive pressure. Expiration ports are unidirectional flow, but typically valve function is never engaged due to pull continual positive pressure. [ ] Multiple Configurations are possible with the BS Halo. [ ] Oxygen Fed - Halo PAPR is supplied 10L oxygen (or compressed, breathable air) via O2 tubing. KEEP FLOW at 10 L for best vapor clearance. Only one flutter valve is needed. [ ] Fan - Portable operation is possible with the Halo PAPR by drawing room air through filter. Positive pressure seal works without requiring perfect fitment. anesthesia viral filter via a fan. Fan is powered by 12 volt battery pack or AC adapter. [ ] Testing [ … ] PAPR has been leak tested against micro-aerosolized threat using same aerosols as N95 mask fit testing. To simulate worst case test conditions, test aerosol was directed at air intake, exhausts, and neck seal. EtCO2 and pulse saturation monitoring of user over several hours were also performed. [ … ] ''Although the physics are sound and the device merely expands application of known good, approved viral filter, theThe Bunny Science Halo PAPR is not yet a regulatory approved device. Use of this Halo respirator is at your sole discretion and risk.'' [ … ] Project is released under Creative Commons Attribution-NonCommercial-NoDerivs CC BY-NC-ND. [ … ] Bunny Science is the explorations arm of Kuo Software, LLC [ … ] Art Credit: Generic human head model by John Brown.
MD Anesthesiologist. [ … ] The COVID-19 pandemic has created severe shortages of protective airway equipment. Providers are forced to forego adequate personal protection due to dwindling PAPR, CAPR, and N95This is not a mask supply. Masks nor face shield, but a full protective PAPR (Powered Air Purifying Respirator). It solves issues that should be single use are being ad-hoc sterilized and reused. plague not only DIY masks but also commercial N95 masks. [ … ] It1. Perfect face fit requirement: A mask which does not form a perfect facial seal is in response to this emergent need, that I have released the ''Bunny Science HALO PAPR''. of no use for protection against aerosolized threat. Some simply cannot use an N95 mask because they cannot pass N95 fit testing against leaks. [ … ] TheBunny Science Halo is intended PAPR isolates user via positive pressure instead hoping for a perfect seal. [ ] 2. Filter material must be effective against viral threat and be safe to achieve protection by keeping breath through. The filter material must also be mounted without any leaks around the users entire head in a positive pressure, clean gas environment. Its disposables material. [ ] Halo PAPR uses commonly available (in hospitals) anesthesia circuit viral filters. These filters are easily found.. FDA approved and provide better than N95 filtering. [ … ] 3D parts files can be downloaded from... https://www.thingiverse.com/thing:4243272 or https://www.prusaprinters.org/prints/27657-halo-buildable-papr-powered-air-purifying-respirat [ … ] Video Intro https://www.youtube.com/watch?v=MvbcmaCIgKk [ … ] I have applied my 30 years ofDesign Highlights [ ] * Provide clean breathing air via FDA approved, ventilator viral filter or medical experience, familiarity with ventilation, air/oxygen * Completely cover head and design skills face to create protect against airborne COVID risks * Use positive pressure to maintain protection even without a perfect seal * Use disposables that are readily available * Field buildable [ ] Barrier is a polyethylene bag placed over head and test this respirator. BS secured around neck. PAPR Halo repurposes an FDA approved ventilator filter to provide clean breathing air. Because it provides airtight penetrations through the bag for inspiration and expiration. Breathable environment is powered, user need not work at positive pressure. Expiration ports are unidirectional flow, but typically valve function is never engaged due to pull continual positive pressure. [ ] Multiple Configurations are possible with the BS Halo. [ ] Oxygen Fed - Halo PAPR is supplied 10L oxygen (or compressed, breathable air) via O2 tubing. KEEP FLOW at 10 L for best vapor clearance. Only one flutter valve is needed. [ ] Fan - Portable operation is possible with the Halo PAPR by drawing room air through filter. Positive pressure seal works without requiring perfect fitment. anesthesia viral filter via a fan. Fan is powered by 12 volt battery pack or AC adapter. [ ] Testing [ … ] PAPR has been leak tested against micro-aerosolized threat using same aerosols as N95 mask fit testing. To simulate worst case test conditions, test aerosol was directed at air intake, exhausts, and neck seal. EtCO2 and pulse saturation monitoring of user over several hours were also performed. [ … ] ''Although the physics are sound and the device merely expands application of known good, approved viral filter, theThe Bunny Science Halo PAPR is not yet a regulatory approved device. Use of this Halo respirator is at your sole discretion and risk.'' [ … ] Project is released under Creative Commons Attribution-NonCommercial-NoDerivs CC BY-NC-ND. [ … ] Bunny Science is the explorations arm of Kuo Software, LLC [ … ] Art Credit: Generic human head model by John Brown.
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Summary
Adaptable, protectivePAPR respirator for aerosol and splash protection during emergent COVID-19 induced PPE (Personal Protective Equipment) shortage. using FDA approved viral filters
Adaptable, protectivePAPR respirator for aerosol and splash protection during emergent COVID-19 induced PPE (Personal Protective Equipment) shortage. using FDA approved viral filters