WO2021188100A1 - Masque respiratoire complet élastomère à filtration d'expiration et faible résistance respiratoire pour la prévention et le confinement d'une maladie infectieuse respiratoire - Google Patents

Masque respiratoire complet élastomère à filtration d'expiration et faible résistance respiratoire pour la prévention et le confinement d'une maladie infectieuse respiratoire Download PDF

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Publication number
WO2021188100A1
WO2021188100A1 PCT/US2020/023230 US2020023230W WO2021188100A1 WO 2021188100 A1 WO2021188100 A1 WO 2021188100A1 US 2020023230 W US2020023230 W US 2020023230W WO 2021188100 A1 WO2021188100 A1 WO 2021188100A1
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WO
WIPO (PCT)
Prior art keywords
respirator
exhalation
filtering
inhalation
cartridges
Prior art date
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Ceased
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PCT/US2020/023230
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English (en)
Inventor
Xin Rui XIA
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Individual
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Individual
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Priority to PCT/US2020/023230 priority Critical patent/WO2021188100A1/fr
Publication of WO2021188100A1 publication Critical patent/WO2021188100A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/02—Masks

Definitions

  • COVID-19 coronavirus infection
  • COVID-19 The outbreak of coronavirus infection (COVID-19) is spreading, claimed thousands of lives.
  • the ever-spreading pandemic disaster causes a world-wide panic and enormous economic loss.
  • COVID-19 is more deadly to seniors and populations with weak immune systems. So far there is no effective method to control or prevent its spreading; some experts even speculated a 70% infection of the world population.
  • Some countries even give up the treatment for seniors due to shortage in resources. Therefore, a low cost, readily available and safe prevention method is needed.
  • a face mask could filter micro-sized particles, but the gap between the mask and skin is millimeters. The gap opening becomes even bigger while talking.
  • Face mask can reduce the spreading but cannot stop it
  • Salivary particles wet the mask and will decrease its efficiency when one talks.
  • Full facepiece elastomeric respirator can provide good seal around the face. It was designed to provide working environmental protection from dust, chemical vapor, acid mist. It has high breathing resistance (NIOSH standard 35 mm H20 with inhalation and 25 mm H20 with exhalation) that can only be worn for a short time period (within 2 hours). More importantly, current commercially available respirator cannot stop respiratory disease from spreading because the exhalation air is not filtered, which carrying pathogens in salivary particles if the wearer is sick (Figure 4).
  • the new design of a full facepiece elastomeric respirator with exhalation filtering and low breath resistance can be used for respiratory infection disease prevention and confinement.
  • This new design has overcome several disadvantages associated with currently available commercial respirators:
  • N95 pleated filtering media (i) A large exhalation air filter is added with N95 pleated filtering media (Figure 5).
  • the N95 pleated filtering media provides an effective filtering area 10 time bigger than regular face mask, which is also translated to 10 times less breathing resistance.
  • the large effective filtering area would provide unprecedented filtering efficiency against COVID-19 spreading comparing to any commercially available face masks. To my knowledge, there is no exhalation filtering in current commercially available full facepiece elastomeric respirators.
  • Another feature is the two large inhalation cartridges with pleated filtering media, which have 10 times lower breathing resistance (1-10 mm H20) comparing to current commercial respirators.
  • the low breathing resistance is important for wearing for long period of times such as in COVID-19 protection; it is more important for seniors who have weaker lungs for breathing but more vulnerable to the deadly COVID-19.
  • the breathing resistance is inversely proportional to the effective filtering area of the filtering media.
  • the new designed inhalation and exhalation cartridges are 3-5 times larger than current commercial respirators because the new designed respirators are for COVID-19 prevention and comfort for long time wearing, while current commercial respirators are designed for working environment. More importantly, the effective filtering area in the pleated filtering media can be increase by the pleat number and depth of the pleated filter media (Figure 6).
  • the elastomeric feature of commercial respirators provides a complete seal around the face to prevent salivary micro-mist and aerosol from breathed-in, but it is uncomfortable when wearing for a long time period.
  • a micro-suede fabric (or leather) strip is placed over the elastomeric face piece in the new design, which provides comfort for long time wearing. It also does not allow air leakage for its air resistance is much higher than that from the inhalation cartridges.
  • the new design has a voice diaphragm that allows voice communication for daily use, but not air transmission.
  • the voice diaphragm is located in front of the nose piece.
  • a microphone can also be placed inside the nose piece for those who need to speak a lot.
  • the new designed respirator will prevent eyes, nose and face get any exposure. It can be wore comfortably for a long period of time. Therefor, it can be used for COVID-19 protection and stop its spreading. In an ideal circumstance, this respirator could stop COVID-19 spreading if every American wearing it for 14 days simultaneously. This respirator is particularly useful for those who are facing to the infected patients because regular face mask could not prevent them from infected.
  • FIG. 1 Example of current commercial full facepiece elastomeric respirators having no exhalation filtering.
  • A Respirator with trapezoidal cartridges,
  • B Respirator with circular cartridges,
  • C respirator with purification element.
  • Figure 5 The proposed full facepiece elastomeric respirator with exhalation filtering and low breathing resistance. Illustrations (A) Breath-in, (B) exhalation is filtered to prevent respiratory disease spreading. The breath-in and exhalation cartridges have high efficiency pleated filter with large effective filtering areas to reduce breathing resistance.
  • Figure 5A is the front view of the new designed full facepiece elastomeric respirator 10, which overcomes several disadvantages associated with current commercial respirators for respiratory disease prevention and confinement. It includes an elastomeric face seal 12 and a harness 14 for securing the respirator 10 to the head of the wearer.
  • a unitary body 13 forms an interface with elastomeric face seal 12 to prevent exterior air and contaminants from reaching a wearer's face.
  • a nose cup 15 is coupled to unitary body 13 and surrounds a nose and mouth of the wearer.
  • a frame 11 is provided to clamp unitary body 13 to elastomeric face seal 12. Two inhalation particulate filtering cartridges 18, 3-5 times larger than current commercial inhalation particulate filtering cartridges, are located on both sides of the unitary body 13.
  • a voice diaphragm 16 can be used for easy voice communication; a microphone can also be built into the nose piece for voice communication.
  • FIG. Pleated filter media to increase effective filtering area and reduce breathing resistance.
  • A Flat pleated filter media in cartridge or
  • B cylindric pleated filtering media could provide large effective filtering area.
  • C The effective filtering area and pleat number show linear relationship with a slope of 71.05 (calculated with a cartridge diameter of 8 cm, height of 4 cm and pleat number of 16)

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Zoology (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

La présente invention concerne une nouvelle conception d'un masque respiratoire complet élastomère à filtration d'expiration et faible résistance respiratoire pour la prévention et le confinement d'une maladie infectieuse respiratoire, qui surmonte plusieurs inconvénients associés aux masques respiratoires commerciaux actuellement disponibles : (i) la filtration d'expiration arrête la propagation de maladie respiratoire si la personne infectée porte ce masque respiratoire ; (ii) la faible résistance respiratoire permet au masque respiratoire d'être porté pendant une longue période de temps ; (iii) la caractéristique élastomère fournit une étanchéité complète autour du visage pour empêcher l'aspiration de micro-brouillard salivaire et d'aérosol ; (iv) le masque respiratoire complet empêche toute exposition des yeux, du nez et du visage ; et (v) la membrane vocale permet une communication vocale pour une utilisation quotidienne. Le masque respiratoire de la présente invention est particulièrement utile pour ceux qui se trouvent face aux patients infectés par une maladie respiratoire car un masque facial normal ne peut pas les empêcher d'être infectés.
PCT/US2020/023230 2020-03-18 2020-03-18 Masque respiratoire complet élastomère à filtration d'expiration et faible résistance respiratoire pour la prévention et le confinement d'une maladie infectieuse respiratoire Ceased WO2021188100A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2020/023230 WO2021188100A1 (fr) 2020-03-18 2020-03-18 Masque respiratoire complet élastomère à filtration d'expiration et faible résistance respiratoire pour la prévention et le confinement d'une maladie infectieuse respiratoire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2020/023230 WO2021188100A1 (fr) 2020-03-18 2020-03-18 Masque respiratoire complet élastomère à filtration d'expiration et faible résistance respiratoire pour la prévention et le confinement d'une maladie infectieuse respiratoire

Publications (1)

Publication Number Publication Date
WO2021188100A1 true WO2021188100A1 (fr) 2021-09-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2020/023230 Ceased WO2021188100A1 (fr) 2020-03-18 2020-03-18 Masque respiratoire complet élastomère à filtration d'expiration et faible résistance respiratoire pour la prévention et le confinement d'une maladie infectieuse respiratoire

Country Status (1)

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WO (1) WO2021188100A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2834065C1 (ru) * 2024-06-27 2025-02-03 Денис Олегович Сущенко Переходник для соединения лицевой части ШМ-62 общевойскового фильтрующего противогаза ПМГ-2 с наружным резьбовым креплением фильтра

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB473612A (en) * 1935-09-09 1937-10-15 Franz Ferdinand Hofstoetter Improvements in and relating to gas masks
US4141703A (en) * 1976-01-30 1979-02-27 Stanley I. Wolf Air-pollution filter and face mask
US6805124B2 (en) * 1998-07-24 2004-10-19 3M Innovative Properties Company Face mask that has a filtered exhalation valve
US20040226563A1 (en) * 2003-05-12 2004-11-18 Zhaoxia Xu Face Mask with Double Breathing Chambers
US7213595B2 (en) * 2000-04-18 2007-05-08 Avon Protection Systems, Inc. Multi-stage respirator filter with TIM filter option
KR20110106728A (ko) * 2010-03-23 2011-09-29 (주)금강알텍 블루투스 단말기가 장착된 방진 마스크
US20110308524A1 (en) * 2008-12-22 2011-12-22 Brey Larry A Compact multigas filter
US8262782B2 (en) * 2002-04-25 2012-09-11 Avon Protection Systems, Inc. Respirator filter canister
US8343264B2 (en) * 2006-02-13 2013-01-01 Donaldson Company, Inc. Web comprising fine fiber and reactive, adsorptive or absorptive particulate
US8667959B2 (en) * 2007-11-20 2014-03-11 Avon Protection Systems, Inc. Modular powered air purifying respirator
US10105557B1 (en) * 2013-11-06 2018-10-23 The United States Of America As Represented By The Secretary Of The Army Valve/connection system to prevent downstream contamination from an upstream source while replacing filters

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB473612A (en) * 1935-09-09 1937-10-15 Franz Ferdinand Hofstoetter Improvements in and relating to gas masks
US4141703A (en) * 1976-01-30 1979-02-27 Stanley I. Wolf Air-pollution filter and face mask
US6805124B2 (en) * 1998-07-24 2004-10-19 3M Innovative Properties Company Face mask that has a filtered exhalation valve
US7213595B2 (en) * 2000-04-18 2007-05-08 Avon Protection Systems, Inc. Multi-stage respirator filter with TIM filter option
US8262782B2 (en) * 2002-04-25 2012-09-11 Avon Protection Systems, Inc. Respirator filter canister
US20040226563A1 (en) * 2003-05-12 2004-11-18 Zhaoxia Xu Face Mask with Double Breathing Chambers
US8343264B2 (en) * 2006-02-13 2013-01-01 Donaldson Company, Inc. Web comprising fine fiber and reactive, adsorptive or absorptive particulate
US8667959B2 (en) * 2007-11-20 2014-03-11 Avon Protection Systems, Inc. Modular powered air purifying respirator
US20110308524A1 (en) * 2008-12-22 2011-12-22 Brey Larry A Compact multigas filter
KR20110106728A (ko) * 2010-03-23 2011-09-29 (주)금강알텍 블루투스 단말기가 장착된 방진 마스크
US10105557B1 (en) * 2013-11-06 2018-10-23 The United States Of America As Represented By The Secretary Of The Army Valve/connection system to prevent downstream contamination from an upstream source while replacing filters

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2834065C1 (ru) * 2024-06-27 2025-02-03 Денис Олегович Сущенко Переходник для соединения лицевой части ШМ-62 общевойскового фильтрующего противогаза ПМГ-2 с наружным резьбовым креплением фильтра
RU2845069C1 (ru) * 2025-03-02 2025-08-13 Денис Александрович Болясов Способ фильтрации воздуха, выдыхаемого пользователем фильтрующего противогаза ПМК-С
RU2853449C1 (ru) * 2025-04-03 2025-12-23 Денис Александрович Болясов Способ фильтрации воздуха, выдыхаемого пользователем противогаза ПМК-С

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