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EP0171551B1 - Masque respiratoire - Google Patents

Masque respiratoire Download PDF

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Publication number
EP0171551B1
EP0171551B1 EP85107748A EP85107748A EP0171551B1 EP 0171551 B1 EP0171551 B1 EP 0171551B1 EP 85107748 A EP85107748 A EP 85107748A EP 85107748 A EP85107748 A EP 85107748A EP 0171551 B1 EP0171551 B1 EP 0171551B1
Authority
EP
European Patent Office
Prior art keywords
breathing mask
mask
valve
breathing
filter device
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.)
Expired - Lifetime
Application number
EP85107748A
Other languages
German (de)
English (en)
Other versions
EP0171551A3 (en
EP0171551A2 (fr
Inventor
Helmut Preiss
Gerhard Hauser
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.)
Dornier GmbH
Original Assignee
Dornier GmbH
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 Dornier GmbH filed Critical Dornier GmbH
Publication of EP0171551A2 publication Critical patent/EP0171551A2/fr
Publication of EP0171551A3 publication Critical patent/EP0171551A3/de
Application granted granted Critical
Publication of EP0171551B1 publication Critical patent/EP0171551B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A62B9/02—Valves
    • 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
    • A62B18/10—Valves

Definitions

  • the innovation relates to a breathing mask for breathing the ambient air contained in a room, containing an inhalation and exhalation valve, a flexible hose which can optionally be connected to the exhalation valve and a filter device which can be connected to the exhalation valve or the hose and is provided with a cartridge.
  • Breathing masks are mainly used as breathing apparatus in mining and fire services. Similar respirators are also used in the military. All such respirators are well known. They are intended to protect people from a lack of oxygen and / or harmful air, e.g. Protect suspended matter and / or gases. This also includes filter, oxygen and fresh air devices.
  • respirators generally consist of a mask to be pulled over the face and provided with a filter.
  • a flexible hose can be arranged between the mask mouthpiece and the filter. The inhalation and exhalation always takes place through the filter and the hose possibly arranged between it and the mask mouthpiece.
  • both mouthpieces provided for this purpose are arranged offset to one another.
  • the mouthpiece with the inhalation valve is usually at the level of the nose and the mouthpiece containing the exhalation valve is directly in front of the mouth.
  • the filter can be connected to the mouthpiece with or without a hose.
  • the overlying mouthpiece containing the inhalation valve is integrated in the mask body, which means that it has practically no larger stem.
  • Such a mask is known from GB-A-957 727. It describes a breathing mask for medical personnel with separately arranged inhalation and exhalation valves, in which a flexible hose can also be connected to the exhalation valve.
  • the exhaled air is filtered only in the event of the hose not being present directly at the bleed valve via a filter device consisting of glass fiber, urethane foam or the like.
  • the object of the invention is to design a breathing mask so that it is sealed off from the outside. Room a person wearing the breathing mask can breathe freely in their freedom of movement without contaminating the ambient air with C0 2 . In particular, C0 2 contamination should be prevented in a room that is also used by people without a breathing mask.
  • the advantage of the innovation is that persons equipped with such breathing masks do not contaminate the atmosphere in manned rescue facilities (chambers) for a long time with carbon dioxide.
  • the oxygen consumed by breathing is supplied to the atmosphere in the chamber and replaced.
  • the carbon dioxide (CO 2 ) released during exhalation is filtered out before entering the atmosphere of the residence chamber by the filter device provided with a lithium hydroxide LiOH cartridge as a CO 2 absorber.
  • the capacity of this filter device is determined by the capacity of the individual filter and the number of LiOH cartridges that are present or carried along.
  • the person-related CO Z binding thus achieved guarantees a chamber atmosphere that is largely free of CO 2 , so that people who cannot breathe through such a respiratory mask, for example injured people, can breathe in and out directly without putting excessive pressure on the atmosphere in the chamber .
  • LiOH lithium hydroxide
  • a higher binding capacity of C0 2 is achieved with a much smaller volume than with previously common chemicals such as soda lime or soda lime.
  • the danger that LiOH dust poses to the organism (chemical burn) is excluded by using LiOH granulate and the filter material (tissue) and by the position in the breathing process.
  • the LiOH granules and filter material produce only a low breathing resistance, which means that breathing is possible over a longer period of time (several hours).
  • a flexible hose connectable between the exhalation valve on the breathing mask and the mouthpiece of the filter device has the advantage that the filter device e.g. can be hung on the wall of the chamber and so the wearer of the breathing mask is relieved.
  • the user of the breathing mask is able to expel ambient air e.g. breathe in from the higher layers of the Kemmer atmosphere or from containers with specially conditioned air.
  • the breathing mask can of course be designed as a half or full mask, in which case the mask body can include the eyes and possibly the entire head of the user. This depends on the respective operating conditions.
  • FIG. 1 in a rescue ball 1 that is only partially shown, a person 3 resting on a seat 2 is shown, wearing a breathing mask 4 covering his mouth and nose, to which a flexible hose 5 with a filter device 6 is connected.
  • Inhalation of the ambient air 7 in the rat ball 1 takes place through an inhalation valve 8 arranged directly in front of the nose and over the mouth, and exhalation through an exhalation valve 9 arranged underneath (see also FIG. 2).
  • the air enriched with carbon dioxide C0 2 during exhalation passes through the exhalation valve 9, the hose 5 and the filter device 6 into the atmosphere 7 of the rescue ball 1.
  • the C0 2 contained in the exhaled air is in the filter device 6 by means of lithium hydroxide (LiOH) granules bound.
  • LiOH lithium hydroxide
  • a further flexible hose 11 can be connected to the inhalation valve 8 arranged above the exhalation valve 9, which can be hung, for example, on the wall 12 of the rescue ball 1 or connected to a container 14 filled with specially conditioned air 13 or to a line 15 supplied from the outside.
  • FIG. 2 shows, enlarged, a breathing mask 4 which is designed as a half mask and covers the nose and mouth and is attached to the head 18 of a person 3 (FIG. 1) by carrying straps 19.
  • the breathing mask 4 has, according to FIG. 1, the inhalation valve 8 on the mouthpiece arranged near the nose and over the mouth and below that the exhalation valve 9 to which the flexible hose 5 is connected.
  • a filter device 6 is connected to the hose end opposite the exhalation valve 9.
  • the filter device 6 consists of an exchangeable cartridge body 26 with a hose connection 24, a filter material 25 (e.g. perforated plate or network with textile fabric and the lithium hydroxide (LiOH) granules arranged in between.
  • LiOH lithium hydroxide

Landscapes

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

Claims (5)

1. Masque respiratoire comprenant une soupape d'inspiration et une soupape d'expiration avec dispositif filtrant, caractérisé en ce que le dispositif filtrant (6) est constitué par une cartouche (26) interchangeable qui contient de l'hydroxyde de lithium (LiOH) pour la liaison de dioxyde de carbone (C02) et qui est prévue exclusivement sur la soupape d'expiration ou sur un tuyau flexible pouvant être raccordé à la soupape d'expiration.
2. Masque respiratoire selon la revendication 1, caractérisé en ce que le dispositif filtrant (6) se compose d'une combinaison de granulés de LiOH et d'un tissu en tant que matière filtrante (25).
3. Masque respiratoire selon la revendication 2, caractérisé en ce que la perméabilité de la matière filtrante (25) est adaptée aux granulés de LiOH.
4. Masque respiratoire selon l'une des revendications 1 à 3, caractérisé en ce qu'il est conformé en demimasque ou en masque complet.
5. Masque respiratoire selon l'une des revendications 1 à 4, caractérisé en ce qu'un tuyau flexible (11) peut être raccordé à la soupape d'inspiration (8).
EP85107748A 1984-08-16 1985-06-22 Masque respiratoire Expired - Lifetime EP0171551B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8424181U 1984-08-16
DE19848424181U DE8424181U1 (de) 1984-08-16 1984-08-16 Atemmaske

Publications (3)

Publication Number Publication Date
EP0171551A2 EP0171551A2 (fr) 1986-02-19
EP0171551A3 EP0171551A3 (en) 1986-12-03
EP0171551B1 true EP0171551B1 (fr) 1990-10-24

Family

ID=6769823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85107748A Expired - Lifetime EP0171551B1 (fr) 1984-08-16 1985-06-22 Masque respiratoire

Country Status (3)

Country Link
EP (1) EP0171551B1 (fr)
DE (2) DE8424181U1 (fr)
NO (1) NO852894L (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5109837A (en) * 1987-02-02 1992-05-05 Hyperbaric Mountain Technologies, Inc. Hyperbaric chamber
US6584976B2 (en) * 1998-07-24 2003-07-01 3M Innovative Properties Company Face mask that has a filtered exhalation valve
US6460539B1 (en) 2000-09-21 2002-10-08 3M Innovative Properties Company Respirator that includes an integral filter element, an exhalation valve, and impactor element
US7329307B2 (en) * 2004-01-28 2008-02-12 Micropore, Inc. Method of manufacturing and using enhanced carbon dioxide adsorbent
RU2303472C1 (ru) * 2005-11-25 2007-07-27 Государственный научный центр РФ-Институт медико-биологических проблем РАН Способ очистки газовой среды в гермообъекте и дыхательный аппарат для очистки газовой среды в гермообъекте
RU2296600C1 (ru) * 2005-11-25 2007-04-10 Государственный научный центр РФ-Институт медико-биологических проблем РАН Способ очистки газовой среды в гермообъекте с регенерацией кислорода и дыхательный аппарат для очистки газовой среды в гермообъекте с регенерацией кислорода
RU2323754C1 (ru) * 2006-09-19 2008-05-10 Государственный научный центр РФ Институт медико-биологических проблем РАН Дыхательный аппарат для очистки газовой среды в гермообъекте
WO2009152264A1 (fr) 2008-06-10 2009-12-17 Micropore, Inc. Adsorbants et dispositifs d'inhalation
US8685153B2 (en) 2010-01-26 2014-04-01 Micropore, Inc. Adsorbent system for removal of gaseous contaminants
US8821619B2 (en) 2010-10-14 2014-09-02 Micropore, Inc. Adsorbent cartridge assembly with end cap
EP4245399A1 (fr) 2012-04-24 2023-09-20 Micropore, Inc. Matériau adsorbant durable et paquets adsorbants et leur procédé de fabrication
CN111111038A (zh) * 2020-03-09 2020-05-08 代福民 便捷双气阀双通道深度防毒口罩

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744524A (en) * 1952-08-08 1956-05-08 Chicago Eye Shield Company Fume respirator with cannister having offset walls and ring mounting means
US3130722A (en) * 1959-09-08 1964-04-28 Protective Treat S Inc Respiratory mask
US4039620A (en) * 1974-04-29 1977-08-02 A-T-O Inc. Endothermal carbon dioxide absorption
US4066076A (en) * 1976-09-10 1978-01-03 Williamson Larry H Rebreathable gas mixing and control device

Also Published As

Publication number Publication date
EP0171551A3 (en) 1986-12-03
EP0171551A2 (fr) 1986-02-19
DE8424181U1 (de) 1984-11-22
NO852894L (no) 1986-02-17
DE3580210D1 (de) 1990-11-29

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