CA2510253A1 - Biohazard mask suitable for civilians - Google Patents

Biohazard mask suitable for civilians Download PDF

Info

Publication number
CA2510253A1
CA2510253A1 CA002510253A CA2510253A CA2510253A1 CA 2510253 A1 CA2510253 A1 CA 2510253A1 CA 002510253 A CA002510253 A CA 002510253A CA 2510253 A CA2510253 A CA 2510253A CA 2510253 A1 CA2510253 A1 CA 2510253A1
Authority
CA
Canada
Prior art keywords
mouth
mask
face
seal
volume
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002510253A
Other languages
French (fr)
Other versions
CA2510253C (en
Inventor
David R. Freriks
Leonard F. Czuba
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BIOKIDZ USA
Original Assignee
Biokidz Usa
David R. Freriks
Leonard F. Czuba
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Biokidz Usa, David R. Freriks, Leonard F. Czuba filed Critical Biokidz Usa
Publication of CA2510253A1 publication Critical patent/CA2510253A1/en
Application granted granted Critical
Publication of CA2510253C publication Critical patent/CA2510253C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • A62B17/04—Hoods
    • 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
    • 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
    • A62B18/025—Halfmasks
    • 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
    • A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • A62B18/082—Assembling eyepieces, lenses or vision-correction means in or on gas-masks

Abstract

A biohazard mask for civilian use comprises bidirectional HEPA filtering to protect both personal and public health during an outbreak. Several measures are taken to maximize comfort and wearability, such as comfort-fit through a gel seal, anti-fogging protection through separation of the eye volume from the mouth-nose volume and through eye moisture release valves, heat-dissipation through a net suspension, and overpressure release valves to maintain the face seal during coughing or sneezing. Wicking exhalation filters promote moisture abatement around the mouth and nose. Attractive and stylish designs, combined with accommodation for telephone communication or audio entertainment, helps wearers keep the mask on during an outbreak.

Claims (36)

1. A biohazard mask comprising:
a curvilinear surface forming a face volume and having a substantially annular edge, the annular edge forming a face seal;
at least one inhalation aperture within the curvilinear surface;
an inhalation filter disposed between the inhalation aperture and the face volume;
an inhalation valve disposed to allow air to enter the face volume through the inhalation aperture and the inhalation filter, but not to allow air to escape in the other direction;
at least one exhalation aperture within the curvilinear surface;
an exhalation filter disposed between the exhalation aperture and the face volume; and an exhalation valve disposed to allow air to exit the open volume through the exhalation aperture and the exhalation filter, but not to allow air to escape in the other direction;
whereby, the biohazard mask filters both inhalate and exhalate.
2. The invention of claim 1, wherein the inhalate and exhalate filters comprise HEPA
filters.
3. The invention of claim 2, wherein the HEPA filters contain a biocidal agent.
4. The invention of claim 1, wherein the curvilinear surface further includes a lens section, and a mouth-nose section, the lens section and the mouth-nose section defining separate volumes when placed against the wearer's face.
5. The invention of claim 4, wherein the mouth-nose section forms a mouth-nose volume and has a substantially annular edge, the annular edge forming a mouth-nose seal; and the lens section forms a lens volume and has a substantially annular edge, the annular edge forming a lens seal.
6. The invention of claim 5, wherein the lens section is removably attached to the exterior surface of the mouth-nose section.
7. The invention of claim 4, wherein the lens section comprises a water vapor-permeable, agent-impermeable membrane.
8. The invention of claims 4 or 7, wherein the lens section comprises a flexible material and further comprises a valve assembly for releasing a portion of the enclosed air volume upon flexion of the flexible material, whereby the mask gradually exchanges the air surrounding the eye with ambient air during ordinary movement of the wearer.
9. The invention of claim 1 wherein the face seal comprises a gel seal.
10. The invention of claim 1 wherein the face seal comprises a gel seal seated on top of a memory seal.
11. The invention of claim 1 wherein the face seal comprises an adhesive.
12. The invention of claim 1 wherein the curvilinear surface comprises at least one inflatable over-pressure release membrane for ensuring face seal integrity and/or exhalation filter performance during sudden interior pressure increases.
13. The invention of claim 2 wherein the HEPA filters comprise removable, disposable cartridges.
14. The invention of claim 1 further including a head suspension system comprising a head net, the head net comprising points of attachment to the curvilinear surface for permitting the user to wear the mask by fitting the net on the head.
15. The invention of claim 1 further including a head suspension system comprising net straps, the net straps comprising points of attachment to the curvilinear surface for permitting the user to wear the mask by fitting the net straps around the head.
16. A biohazard mask comprising:
a curvilinear surface forming a face volume and having a substantially annular edge, the annular edge forming a face seal;
at least one aperture Within the curvilinear surface;
a bi-directional HEPA filter disposed between the aperture and the face volume;
whereby, the biohazard mask filters both inhalate and exhalate.
17. The invention of claim 16, wherein the HEPA filter contains a biocidal agent.
18. The invention of claim 16, wherein the curvilinear surface further includes a lens section, and a mouth-nose section, the lens section and the mouth-nose section defining separate volumes when placed against the wearer's face.
19. The invention of claim 18, wherein the mouth-nose section forms a mouth-nose volume and has a substantially annular edge, the annular edge forming a mouth-nose seal; and the lens section forms a lens volume and has a substantially annular edge, the annular edge forming a lens seal.
20. The invention of claim 19, wherein the lens section is removably attached to the exterior surface of the mouth-nose section.
21. The invention of claim 18, wherein the lens section comprises a water vapor-permeable, agent-impermeable membrane.
22. The invention of claims 18 or 21, wherein the lens section comprises a flexible material and further comprises a valve assembly for releasing a portion of the enclosed air volume upon flexion of the flexible material, whereby the mask gradually exchanges the air surrounding the eye with ambient air during ordinary movement of the wearer.
23. The invention of claim 16 wherein the face seal comprises a gel seal.
24. The invention of claim 16 wherein the face seal comprises a gel seal seated on top of a memory seal.
25. The invention of claim 16 wherein the face seal comprises an adhesive.
26. The invention of claim 16 wherein the curvilinear surface comprises at least one inflatable over-pressure release membrane for ensuring face seal integrity and/or filter performance during sudden interior pressure increases.
27. The invention of claim 16 wherein the HEPA filter comprises a removable, disposable cartridge.
28. The invention of claim 16 further including a head suspension system comprising a head net, the head net comprising points of attachment to the curvilinear surface for permitting the user to wear the mask by fitting the net on the head.
29. The invention of claim 16 further including a head suspension system comprising net straps, the net straps comprising points of attachment to the curvilinear surface for permitting the user to wear the mask by fitting the net straps around the head.
30. The invention of claims 3 or 17 wherein the biocidal agent includes one or more from the list comprising elemental silver, silver oxide, silver sulfadiazine, silver-hydrogel, chlorhexidine and hypochlorite.
31. A biohazard mask comprising:
means for sealing the mask to a face; and means for filtering both inhalate and exhalate.
32. The invention of claim 31 further comprising means for releasing overpressured exhalate.
33. The invention of claim 31 further comprising means for replacing the means for filtering.
34. The invention of claim 31 further comprising:
a lens; and means for preventing fogging of the lens.
35. The invention of claim 31 further comprising means for preventing moisture buildup in the mouth area, whereby the mask increases user wearability and comfort.
36. The invention of claim 31 further comprising:
means for suspending the mask on the face of the user; and means for preventing heat build-up under the means for suspending.
CA2510253A 2003-01-22 2004-01-20 Biohazard mask suitable for civilians Expired - Fee Related CA2510253C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US44180203P 2003-01-22 2003-01-22
US60/441,802 2003-01-22
US10/459,417 2003-06-11
US10/459,417 US7152600B2 (en) 2003-01-22 2003-06-11 Biohazard mask suitable for civilians
PCT/US2004/001256 WO2004066764A2 (en) 2003-01-22 2004-01-20 Biohazard mask suitable for civilians

Publications (2)

Publication Number Publication Date
CA2510253A1 true CA2510253A1 (en) 2004-08-12
CA2510253C CA2510253C (en) 2010-06-22

Family

ID=32829775

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2510253A Expired - Fee Related CA2510253C (en) 2003-01-22 2004-01-20 Biohazard mask suitable for civilians

Country Status (7)

Country Link
US (1) US7152600B2 (en)
EP (1) EP1599107A4 (en)
JP (1) JP2007524429A (en)
CN (1) CN1997427B (en)
CA (1) CA2510253C (en)
MX (1) MXPA05007838A (en)
WO (1) WO2004066764A2 (en)

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Also Published As

Publication number Publication date
US7152600B2 (en) 2006-12-26
US20060201511A1 (en) 2006-09-14
JP2007524429A (en) 2007-08-30
CN1997427A (en) 2007-07-11
CA2510253C (en) 2010-06-22
EP1599107A2 (en) 2005-11-30
MXPA05007838A (en) 2006-02-10
EP1599107A4 (en) 2008-04-30
WO2004066764A3 (en) 2005-07-28
WO2004066764A8 (en) 2005-03-17
CN1997427B (en) 2011-07-27
WO2004066764A2 (en) 2004-08-12

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Effective date: 20200120