WO2021209705A1 - Oro-nasal respiratory mask - Google Patents

Oro-nasal respiratory mask Download PDF

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Publication number
WO2021209705A1
WO2021209705A1 PCT/FR2021/050637 FR2021050637W WO2021209705A1 WO 2021209705 A1 WO2021209705 A1 WO 2021209705A1 FR 2021050637 W FR2021050637 W FR 2021050637W WO 2021209705 A1 WO2021209705 A1 WO 2021209705A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
mask
opening
user
housing
Prior art date
Application number
PCT/FR2021/050637
Other languages
French (fr)
Inventor
Sébastien Messe
Edouard Campbell
Yann DARMAILLAC
Frédéric BERTHET
Thomas GRICOURT
Sylvain Adrien Bonsang
Original Assignee
Safran Aircraft Engines
Safran Helicopter Engines
Safran Landing Systems
Safran Aerotechnics
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 Safran Aircraft Engines, Safran Helicopter Engines, Safran Landing Systems, Safran Aerotechnics filed Critical Safran Aircraft Engines
Publication of WO2021209705A1 publication Critical patent/WO2021209705A1/en

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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
    • A62B18/025—Halfmasks
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1107—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape
    • A41D13/1138—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a cup configuration
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1161—Means for fastening to the user's head

Definitions

  • TITLE Oronasal respiratory mask
  • the invention relates to an oronasal respiratory mask intended in particular for the protection of people against bacteria, germs and aerosolized viruses which can affect the upper airways of people.
  • the current means of protection are filtering masks falling into two categories.
  • a first category concerns masks preventing or filtering the emission of microbial, viral and / or bacterial loads by a potentially sick user or wearer of the protective mask. These masks are, for example, the so-called surgeon's masks.
  • Such a category of masks meets the standard EN 14683 in particular. These masks do not protect the wearer from viral or other loads present in the external environment or atmosphere. Indeed, these masks do not provide a sufficient seal on the wearer's face to prevent inhalation of unfiltered air.
  • a second category concerns masks which prevent a healthy wearer from being contaminated by the external environment when inhaling. Such a category of masks meets in particular the EN149 standard.
  • These masks are generally identified by the reference FFP1, FFP2 or FFP3 according to their filtration rate. These masks are generally provided with exhalation valves without filtration. These masks therefore do not protect the external environment from viruses, bacteria or microbes emitted by the wearer.
  • masks typically have a short duration of use and / or are disposable. They must therefore be replaced several times a day.
  • the invention aims to provide a breathing mask providing two-way protection that can be reused, at least partially, over a long period of time. Presentation of the invention
  • the invention relates to an oro-nasal breathing mask comprising a body not permeable to air comprising an edge intended to be applied in a sealed manner to the face. of a user, the body comprising at least one opening allowing the passage of an inhalation air flow and an exhalation air flow, a filter being removably and tightly mounted in the opening of the body so that the inspiratory and expiratory air flows completely pass through said filter.
  • Such a mask makes it possible to filter both the air flow entering the mask or inspiration flow, so as not to contaminate the user, and the air flow leaving the mask or expiration flow, from so as not to contaminate other people in the event that the user is sick himself.
  • the body does not have an unfiltered opening that could allow an unfiltered inflow or outflow of air.
  • the filter may be a commercial filter suitable for the use, for example sanitary, of the mask. Such a filter may be suitable for being used one or more times, depending on the specifications.
  • the body may have a single opening. In this case, only one filter needs to be replaced.
  • the body can have several openings, for example two openings, a filter being mounted in each opening so that all of the air flow entering or leaving the mask passes through the filters.
  • the body can be decontaminated or sterilized thermally or chemically.
  • Thermal decontamination or sterilization can consist of heating the body, for example in an oven.
  • Chemical decontamination or sterilization can be carried out using a disinfectant solution, for example based on sodium hypochlorite, commonly called bleach.
  • the filter, and the mask more generally, can meet the standard EN 1827, level or type FMP2, and the standard EN 14683.
  • the mask can be without an expiratory or inspiratory valve.
  • Such a valve is generally present on masks of the prior art, the air passing through such a valve generally not being filtered.
  • a mask valve is an organ allowing the circulation of air in one direction but preventing the circulation of air in the opposite direction.
  • a mask valve generally present in the prior art, thus acts as a check valve.
  • the filter can be housed entirely in the opening of the body. In other words, the filter does not extend to the outside of the mask body.
  • Such a feature makes it possible not to hang the filter on an external element, so as to avoid accidental tearing of the filter relative to the body.
  • the filter may include a housing, in which is mounted a filter element.
  • the filter can be preconditioned before mounting in the opening of the mask. In other words, the wearer or user does not have to place and manipulate the filter element relative to the housing of the filter, which ensures that the element is correctly positioned relative to the filter housing.
  • the filter element may not be removable from the housing, so as to secure the integrity of the filter and guarantee its specifications.
  • the housing may be perforated to allow air circulation through said housing and the filter element housed in the housing.
  • the housing can be removably and sealed in the opening of the body.
  • the housing can be screwed into the body opening.
  • the housing may have an external thread cooperating with an internal thread of the opening.
  • An O-ring can be fitted between the filter, in particular the filter housing, and the body.
  • the O-ring can be positioned in the opening of the body.
  • the body can be made of a rigid material.
  • the body is for example made of a polymer material, for example of polyamide, for example of biocompatible PA12.
  • the mask may include means for holding the filter in the opening.
  • the retaining means may comprise a first stop preventing the withdrawal of the filter with respect to the opening, in a first direction, and a second stop, removably mounted on the body at the level of the opening, and preventing the withdrawal of the filter. filter with respect to the opening, in a second direction, opposite to the first direction.
  • the first stopper may be formed of material with the body.
  • At least one of the stops may be formed by a perforated part or a perforated locking member, for example in the form of a cross, located opposite the filter and extending across the opening.
  • the opening and the filter can be circular in shape.
  • the first and second directions extend along the axis of the opening.
  • the second stop may be a locking member in the form of a perforated disc, comprising for example an external annular part and an internal perforated part, for example in the shape of a cross.
  • the ends of the cross can be connected to the outer annular part.
  • the first stop may also include a perforated part, for example in the shape of a cross.
  • the ends of the cross can be connected to the rest of the body.
  • Each cross can include at least two branches forming an angle between them.
  • the first stop may be formed by a flange or an annular shoulder of the body.
  • the first stop may be located on the inside of the mask, respectively on the outside of the mask.
  • the second stop can thus be located on the outside of the mask, respectively on the inside of the mask.
  • the inner side of the mask is the side facing the face of the wearer or user.
  • the edge of the body can be covered with a gasket of flexible material.
  • Such a seal makes it possible to adapt the mask to the shape and to the irregularities of the user's face, so as to guarantee the tightness of the contact between the body and the seal, on the one hand, and the user's face. , on the other hand.
  • a seal is not necessarily absolute, but the aforementioned contact must be sufficiently sealed to meet the specifications for using the mask.
  • the seal may extend continuously over the entire edge and be formed in one piece.
  • the seal can be removable.
  • the seal can thus be replaced if necessary after one or more uses.
  • the seal can also be decontaminated or sterilized separately from the body.
  • the seal can be overmolded or glued to the edge of the body, for example.
  • the seal can be a lip seal.
  • the joint may be able to adapt to different face shapes or morphologies.
  • the seal can be made, in part or in whole, of silicone.
  • the body can be equipped with at least one elastic member capable of pressing the edge of the body of the mask against the user's face.
  • the mask may for example have one or two elastic bands applied to the back of the user's skull.
  • FIG. 1 is an exploded perspective view of a breathing mask according to one embodiment of the invention.
  • FIG. 2 is a view of the front of the mask
  • FIG. 3 is a view of the back of the mask
  • Figures 1 to 3 show a respiratory mask 1 according to one embodiment of the invention.
  • This comprises a rigid body 2 not permeable to air, comprising a rear edge 3 intended to be applied in a sealed manner to the face of a user, the body 2 further comprising a front central opening 4 allowing the passage of 'an inhalation air flow and an exhalation air flow.
  • the body 2 is for example made of a polymer material, for example of polyamide, for example of biocompatible PA12.
  • the opening 4 and the filter 5 are circular and extend along an axis denoted X.
  • the filter 5 is housed entirely or entirely in the opening 4 of the body 2.
  • the filter 5 or filter cartridge can meet the specifications of standard EN 149, level P3.
  • the filter 5 comprises a housing 5a, in which is mounted a filter element 5b.
  • the filter 5 can be preconditioned before mounting in the opening 4 of the body 1. In other words, the wearer or user does not have to place and manipulate the filter element 5b with respect to the housing 5a of the filter 5. , which ensures that the filter element 5b is correctly positioned relative to the housing 5a of the filter 5.
  • the housing 5a is perforated so as to allow the circulation of air through said housing 5a and the filter element 5b housed in the housing 5a.
  • the housing 5a is fixed in a removable and sealed manner in the opening 4 of the body 2.
  • the housing 5a of the filter 5 is screwed into the opening 4 of the body 2.
  • the housing 5a can thus include an external thread cooperating with internal tapping of the opening 4.
  • a bayonet or quarter-turn type assembly can also be considered.
  • An O-ring can be mounted between the housing 5a and the body 2, in the opening 4.
  • the body 2 has a first stop 6 making it possible to immobilize the filter 5 in position in the opening 4, in a first direction oriented along the X axis.
  • a locking member 7 is also removably mounted on the body 2, in particular in the opening 4.
  • the locking member 7 forms a second stop making it possible to immobilize the filter 5 in position in the opening 4, in a second direction oriented along the X axis, opposite to the first direction.
  • the first stop 6 is formed by a flange or an annular shoulder 6 of the body 2. Also in this embodiment, the first direction is oriented towards the inside of the mask 1.
  • the first stop 6 is formed by a perforated wall, here in the general shape of a cross with two branches 8. In this embodiment also, the first direction is oriented outwardly. of mask 1.
  • the locking member 7 is a perforated disc comprising here a radially outer annular part 9 and a cross-shaped part comprising two perpendicular branches 10, the ends of which are connected to the annular part 9.
  • a perforated disc comprising here a radially outer annular part 9 and a cross-shaped part comprising two perpendicular branches 10, the ends of which are connected to the annular part 9.
  • any other form of stop or perforated wall is also possible, both for the first and for the second stop, and whatever the embodiment.
  • the locking member 7 is held in position on the body 2 by screwing, snapping or any other removable means allowing the removal of the locking member 7 relative to the body 2. It will be noted that, in the embodiment of Figure 1, the blocking member 7 and the filter 5 can be removed or mounted from the outside of the mask 1. Conversely, in the embodiment of Figure 2, the blocking member 7 and filter 5 can be removed or fitted from inside mask 1.
  • the rear edge 3 of the body 2 is covered with a lip seal 11 made of flexible material, for example biomedical silicone, intended to be pressed so onto the face of a wearer or user by surrounding the mouth, nose and a at least part of the wearer's chin.
  • the seal 11 is removably mounted on the corresponding edge 3 of the body 2.
  • the body 2 further comprises projecting areas 12 forming flanges allowing the mounting of elastic 13 intended to surround the back of the wearer's head, as is known per se, so as to press the seal 11 on the face. of the wearer.
  • such a mask 1 makes it possible to filter both the air flow entering the mask or inspiration flow, so as not to contaminate the user, and the air flow leaving the mask 1 or exhalation flow, so as not to contaminate other people in the event that the user is sick himself.
  • the body 2 does not have an unfiltering opening that could allow an unfiltered incoming or outgoing air flow to pass.
  • the filter 5 can be a commercial filter suitable for the sanitary use of the mask 1.
  • the body 2 can be decontaminated or sterilized thermally or chemically.
  • Thermal decontamination or sterilization can consist of heating the body 2, for example in an oven.
  • Chemical decontamination or sterilization can be carried out using a disinfectant solution, for example sodium hypochlorite, commonly called bleach.
  • the seal 11 can also be replaced as needed after one or more uses.
  • the seal 11 can also be decontaminated or sterilized separately from the body 2.
  • the mask does not have an expiratory or inspiratory valve, either at the level of the filter 5 or at the level of another opening of the body 2.

Abstract

The invention relates to an oro-nasal respiratory mask (1) comprising an airtight body (2) comprising an edge (3) intended to be sealably applied onto the face of a user, the body (2) comprising at least one opening (4) allowing the passage of an inhalation air flow and an exhalation air flow, a filter (5) being detachably and sealably mounted in the opening (4) of the body (2) so that the inhalation and exhalation air flows fully pass through said filter (5).

Description

DESCRIPTION DESCRIPTION
TITRE : Masque respiratoire oro-nasal TITLE: Oronasal respiratory mask
Domaine technique de l’invention Technical field of the invention
L’invention concerne un masque respiratoire oro-nasal destiné notamment à la protection des personnes contre des bactéries, germes et virus en aérosol pouvant affecter les voies aériennes supérieures des personnes. The invention relates to an oronasal respiratory mask intended in particular for the protection of people against bacteria, germs and aerosolized viruses which can affect the upper airways of people.
Etat de la technique antérieure State of the prior art
Les moyens de protection actuels sont des masques filtrant se classant en deux catégories. Une première catégorie concerne les masques empêchant ou filtrant l’émission de charges microbiennes, virales et/ou bactériennes, par un utilisateur ou porteur potentiellement malade du masque de protection. Ces masques sont par exemple les masques dits de chirurgien. Une telle catégorie de masques répond en particulier à la norme EN 14683. Ces masques ne protègent pas leur porteur des charges virales ou autres présentes dans l’environnement extérieur ou ambiance. En effet, ces masques n’assurent pas une étanchéité suffisante sur le visage du porteur pour empêcher une inhalation d’air non filtré. Une seconde catégorie concerne les masques permettant d’éviter à un porteur sain d’être contaminé par l’environnement extérieur lors de ses inspirations. Une telle catégorie de masques répond en particulier à la norme EN149. Ces masques sont généralement identifiés par la référence FFP1 , FFP2 ou FFP3 selon leur taux de filtration. Ces masques sont en général pourvus de soupapes expiratoires sans filtration. Ces masques ne permettent donc pas de protéger l’environnement extérieur des virus, bactéries ou microbes émis par le porteur. The current means of protection are filtering masks falling into two categories. A first category concerns masks preventing or filtering the emission of microbial, viral and / or bacterial loads by a potentially sick user or wearer of the protective mask. These masks are, for example, the so-called surgeon's masks. Such a category of masks meets the standard EN 14683 in particular. These masks do not protect the wearer from viral or other loads present in the external environment or atmosphere. Indeed, these masks do not provide a sufficient seal on the wearer's face to prevent inhalation of unfiltered air. A second category concerns masks which prevent a healthy wearer from being contaminated by the external environment when inhaling. Such a category of masks meets in particular the EN149 standard. These masks are generally identified by the reference FFP1, FFP2 or FFP3 according to their filtration rate. These masks are generally provided with exhalation valves without filtration. These masks therefore do not protect the external environment from viruses, bacteria or microbes emitted by the wearer.
Indépendamment de leur catégorie, les masques ont classiquement une durée d’utilisation courte et/ou sont à usage unique. Ils doivent ainsi être remplacés plusieurs fois par jour.Regardless of their category, masks typically have a short duration of use and / or are disposable. They must therefore be replaced several times a day.
Lors de déplacements en phase de confinement de la population lié à une pandémie, ou lors d’une phase de déconfinement de la population, l’état de contagiosité de l’ensemble des personnes demeure inconnu. Une protection bidirectionnelle, c’est-à-dire une protection de chaque personne vis-à-vis de son environnement et inversement, est alors très utile. Une telle utilité est d’autant plus importante que les lieux de déplacement des personnes sont des lieux clos, tels par exemple que des moyens de transport en commun ou personnel, notamment des avions. During displacements during a phase of containment of the population linked to a pandemic, or during a phase of deconfinement of the population, the state of contagiousness of all people remains unknown. Two-way protection, that is to say protection of each person vis-à-vis their environment and vice versa, is then very useful. Such utility is all the more important since the places of movement of people are closed places, such as for example means of public or personal transport, in particular airplanes.
L’invention vise à proposer un masque respiratoire permettant d’assurer une protection bidirectionnelle et pouvant être réutilisé, au moins partiellement, sur une longue durée. Présentation de l’invention The invention aims to provide a breathing mask providing two-way protection that can be reused, at least partially, over a long period of time. Presentation of the invention
A cet effet, l’invention concerne un masque respiratoire oro-nasal comportant un corps non perméable à l’air comprenant un bord destiné à être appliqué de façon étanche sur le visage d’un utilisateur, le corps comportant au moins une ouverture permettant le passage d’un flux d’air d’inspiration et d’un flux d’air d’expiration, un filtre étant monté de façon amovible et étanche dans l’ouverture du corps de façon à ce que les flux d’air d’inspiration et d’expiration traversent en totalité ledit filtre. To this end, the invention relates to an oro-nasal breathing mask comprising a body not permeable to air comprising an edge intended to be applied in a sealed manner to the face. of a user, the body comprising at least one opening allowing the passage of an inhalation air flow and an exhalation air flow, a filter being removably and tightly mounted in the opening of the body so that the inspiratory and expiratory air flows completely pass through said filter.
Un tel masque permet de filtrer à la fois le flux d’air entrant dans le masque ou flux d’inspiration, de façon à ne pas contaminer l’utilisateur, et le flux d’air sortant du masque ou flux d’expiration, de façon à ne pas contaminer d’autres personnes dans le cas où l’utilisateur serait lui-même malade. En d’autres termes, le corps ne comporte pas d’ouverture non filtrante risquant de laisser passer un flux d’air entrant ou sortant non filtré. Such a mask makes it possible to filter both the air flow entering the mask or inspiration flow, so as not to contaminate the user, and the air flow leaving the mask or expiration flow, from so as not to contaminate other people in the event that the user is sick himself. In other words, the body does not have an unfiltered opening that could allow an unfiltered inflow or outflow of air.
Il est possible de conserver le corps du masque après utilisation et changer simplement le filtre avant une nouvelle utilisation. Le filtre peut être un filtre du commerce adapté à l’usage, par exemple sanitaire, du masque. Un tel filtre peut être apte à être utilisé une ou plusieurs fois, en fonction des spécifications. Le corps peut comporter une unique ouverture. Dans ce cas, seul un filtre doit être remplacé. It is possible to keep the body of the mask after use and simply change the filter before using it again. The filter may be a commercial filter suitable for the use, for example sanitary, of the mask. Such a filter may be suitable for being used one or more times, depending on the specifications. The body may have a single opening. In this case, only one filter needs to be replaced.
Bien entendu, le corps peut comporter plusieurs ouvertures, par exemple deux ouvertures, un filtre étant monté dans chaque ouverture de façon à ce que la totalité du flux d’air entrant ou sortant du masque traverse les filtres. Of course, the body can have several openings, for example two openings, a filter being mounted in each opening so that all of the air flow entering or leaving the mask passes through the filters.
Le corps peut être décontaminé ou stérilisé thermiquement ou par voie chimique. La décontamination ou stérilisation par voie thermique peut consister à chauffer le corps, par exemple dans une étuve. La décontamination ou stérilisation par voie chimique peut être réalisée à l’aide d’une solution désinfectante, par exemple à base d’hypochlorite de sodium, communément appelée eau de Javel. The body can be decontaminated or sterilized thermally or chemically. Thermal decontamination or sterilization can consist of heating the body, for example in an oven. Chemical decontamination or sterilization can be carried out using a disinfectant solution, for example based on sodium hypochlorite, commonly called bleach.
Le filtre, et le masque de façon plus générale, peuvent répondre à la norme EN 1827, niveau ou type FMP2, et à la norme EN 14683. Le masque peut être dépourvu de valve expiratoire ou inspiratoire. The filter, and the mask more generally, can meet the standard EN 1827, level or type FMP2, and the standard EN 14683. The mask can be without an expiratory or inspiratory valve.
Une telle valve est généralement présente sur les masques de l’art antérieur, l’air traversant une telle valve n’étant généralement pas filtré. Such a valve is generally present on masks of the prior art, the air passing through such a valve generally not being filtered.
On rappelle qu’une valve de masque est un organe permettant la circulation d’air dans un sens mais empêchant la circulation d’air dans le sens opposé. Une valve de masque, généralement présente dans l’art antérieur, joue ainsi le rôle de clapet anti-retour. It is recalled that a mask valve is an organ allowing the circulation of air in one direction but preventing the circulation of air in the opposite direction. A mask valve, generally present in the prior art, thus acts as a check valve.
Le filtre peut être est logé entièrement dans l’ouverture du corps. En d’autres termes, le filtre ne s’étend pas du côté extérieur du corps du masque. The filter can be housed entirely in the opening of the body. In other words, the filter does not extend to the outside of the mask body.
Une telle caractéristique permet de ne pas accrocher le filtre à un élément extérieur, de façon à éviter l’arrachement accidentel du filtre par rapport au corps. Such a feature makes it possible not to hang the filter on an external element, so as to avoid accidental tearing of the filter relative to the body.
Le filtre peut comporter un boîtier, dans lequel est monté un élément filtrant. Le filtre peut être pré-conditionné avant montage dans l’ouverture du masque. En d’autres termes, le porteur ou utilisateur n’a pas à placer et manipuler l’élément filtrant par rapport au boîtier du filtre, ce qui assure que l’élément est correctement positionné par rapport au boîtier du filtre. L’élément filtrant peut être indémontable par rapport au boîtier, de façon à sécuriser l’intégrité du filtre et garantir ses spécifications. The filter may include a housing, in which is mounted a filter element. The filter can be preconditioned before mounting in the opening of the mask. In other words, the wearer or user does not have to place and manipulate the filter element relative to the housing of the filter, which ensures that the element is correctly positioned relative to the filter housing. The filter element may not be removable from the housing, so as to secure the integrity of the filter and guarantee its specifications.
Le boîtier peut être ajouré de façon à permettre la circulation d’air au travers dudit boîtier et de l’élément filtrant logé dans le boîtier. The housing may be perforated to allow air circulation through said housing and the filter element housed in the housing.
Le boîtier peut être fixé de manière amovible et étanche dans l’ouverture du corps. Le boîtier peut être vissé dans l’ouverture du corps. Le boîtier peut comporter un filetage externe coopérant avec un taraudage interne de l’ouverture. The housing can be removably and sealed in the opening of the body. The housing can be screwed into the body opening. The housing may have an external thread cooperating with an internal thread of the opening.
Un joint torique peut être monté entre le filtre, en particulier le boîtier du filtre, et le corps. Le joint torique peut être positionné dans l’ouverture du corps. An O-ring can be fitted between the filter, in particular the filter housing, and the body. The O-ring can be positioned in the opening of the body.
Le corps peut être réalisé dans un matériau rigide. The body can be made of a rigid material.
On évite ainsi une déformation du corps en fonctionnement, une telle déformation risquant notamment de provoquer un jeu entre le filtre et le bord de l’ouverture correspondante du corps. De l’air non filtré pourrait alors entrer ou sortir du masque sans être filtré en passant au travers dudit jeu. This avoids deformation of the body in operation, such deformation in particular running the risk of causing play between the filter and the edge of the corresponding opening of the body. Unfiltered air could then enter or exit the mask without being filtered by passing through said clearance.
Le corps est par exemple réalisé dans un matériau polymère, par exemple en polyamide, par exemple en PA12 biocompatible. The body is for example made of a polymer material, for example of polyamide, for example of biocompatible PA12.
Le masque peut comporter des moyens de maintien du filtre dans l’ouverture. The mask may include means for holding the filter in the opening.
Les moyens de maintien peuvent comporter une première butée empêchant le retrait du filtre par rapport à l’ouverture, dans une première direction, et une seconde butée, montée de manière amovible sur le corps au niveau de l’ouverture, et empêchant le retrait du filtre par rapport à l’ouverture, dans une seconde direction, opposée à la première direction. The retaining means may comprise a first stop preventing the withdrawal of the filter with respect to the opening, in a first direction, and a second stop, removably mounted on the body at the level of the opening, and preventing the withdrawal of the filter. filter with respect to the opening, in a second direction, opposite to the first direction.
Les butées précitées permettent d’empêcher tout retrait accidentel du filtre, même lorsque le filtre est lui-même fixé, par exemple par vissage, sur le corps. The abovementioned stops make it possible to prevent any accidental removal of the filter, even when the filter itself is fixed, for example by screwing, on the body.
La première butée peut être formée de matière avec le corps. The first stopper may be formed of material with the body.
L’une au moins des butées peut être formée par une partie ajourée ou un organe de blocage ajouré, par exemple en forme de croix, située en regard du filtre et s’étendant en travers de l’ouverture. At least one of the stops may be formed by a perforated part or a perforated locking member, for example in the form of a cross, located opposite the filter and extending across the opening.
L’ouverture et le filtre peuvent être de forme circulaire. Dans ce cas, les premières et secondes directions s’étendent selon l’axe de l’ouverture. The opening and the filter can be circular in shape. In this case, the first and second directions extend along the axis of the opening.
La seconde butée peut être un organe de blocage en forme de disque ajouré, comportant par exemple une partie annulaire externe et une partie interne ajourée, par exemple en forme de croix. Les extrémités de la croix peuvent être reliées à la partie annulaire externe. La première butée peut également comporter une partie ajourée, par exemple en forme de croix. Les extrémités de la croix peuvent être reliées au reste du corps. Chaque croix peut comporter au moins deux branches formant un angle entre elles. The second stop may be a locking member in the form of a perforated disc, comprising for example an external annular part and an internal perforated part, for example in the shape of a cross. The ends of the cross can be connected to the outer annular part. The first stop may also include a perforated part, for example in the shape of a cross. The ends of the cross can be connected to the rest of the body. Each cross can include at least two branches forming an angle between them.
La première butée peut être formée par une collerette ou un épaulement annulaire du corps. La première butée peut être située du côté intérieur du masque, respectivement du côté extérieur du masque. La seconde butée peut ainsi être situé du côté extérieur du masque, respectivement du côté intérieur du masque. Le côté intérieur du masque est le côté tourné vers le visage du porteur ou de l’utilisateur. Le bord du corps peut être recouvert d’un joint en matériau souple. The first stop may be formed by a flange or an annular shoulder of the body. The first stop may be located on the inside of the mask, respectively on the outside of the mask. The second stop can thus be located on the outside of the mask, respectively on the inside of the mask. The inner side of the mask is the side facing the face of the wearer or user. The edge of the body can be covered with a gasket of flexible material.
Un tel joint permet d’adapter le masque à la forme et aux irrégularités du visage de l’utilisateur, de façon à garantir l’étanchéité du contact entre le corps et le joint, d’une part, et le visage de l’utilisateur, d’autre part. Bien entendu, une telle étanchéité n’est pas nécessairement absolue mais le contact précité doit être suffisamment étanche pour répondre aux spécifications d’utilisation du masque. Such a seal makes it possible to adapt the mask to the shape and to the irregularities of the user's face, so as to guarantee the tightness of the contact between the body and the seal, on the one hand, and the user's face. , on the other hand. Of course, such a seal is not necessarily absolute, but the aforementioned contact must be sufficiently sealed to meet the specifications for using the mask.
Le joint peut s’étendre de façon continue sur la totalité du bord et être formé d’une seule pièce. The seal may extend continuously over the entire edge and be formed in one piece.
Le joint peut être amovible. The seal can be removable.
Le joint peut ainsi être remplacé au besoin après une ou plusieurs utilisations. Le joint peut également être décontaminé ou stérilisé de façon séparée du corps. The seal can thus be replaced if necessary after one or more uses. The seal can also be decontaminated or sterilized separately from the body.
En variante, le joint peut être surmoulé ou collé sur le bord du corps par exemple. As a variant, the seal can be overmolded or glued to the edge of the body, for example.
Le joint peut être un joint à lèvres. Le joint peut être apte à s’adapter à différentes formes ou morphologies de visage. The seal can be a lip seal. The joint may be able to adapt to different face shapes or morphologies.
Le joint peut être réalisé, en partie ou en totalité, en silicone. The seal can be made, in part or in whole, of silicone.
Le corps peut être équipé d’au moins un organe élastique apte à plaquer le bord du corps du masque en appui sur le visage de l’utilisateur. The body can be equipped with at least one elastic member capable of pressing the edge of the body of the mask against the user's face.
Le masque peut par exemple comporter une ou deux bandes élastiques appliquées à l’arrière du crâne de l’utilisateur. The mask may for example have one or two elastic bands applied to the back of the user's skull.
Plusieurs tailles de masque peuvent être envisagées, afin de s’adapter à un porteur adulte masculin ou féminin, ou à un porteur enfant, par exemple. Several mask sizes can be considered, in order to adapt to an adult male or female wearer, or to a child wearer, for example.
Brève description des figures Brief description of the figures
[Fig. 1] est une vue éclatée, en perspective, d’un masque respiratoire selon une forme de réalisation de l’invention, [Fig. 1] is an exploded perspective view of a breathing mask according to one embodiment of the invention,
[Fig. 2] est une vue de l’avant du masque, [Fig. 2] is a view of the front of the mask,
[Fig. 3] est une vue de l’arrière du masque, [Fig. 3] is a view of the back of the mask,
Description détaillée de l’invention Detailed description of the invention
Les figures 1 à 3 représentent un masque respiratoire 1 selon une forme de réalisation de l’invention. Celui-ci comporte un corps rigide 2 non perméable à l’air, comprenant un bord arrière 3 destiné à être appliqué de façon étanche sur le visage d’un utilisateur, le corps 2 comportant en outre une ouverture centrale avant 4 permettant le passage d’un flux d’air d’inspiration et d’un flux d’air d’expiration. Le corps 2 est par exemple réalisé dans un matériau polymère, par exemple en polyamide, par exemple en PA12 biocompatible. Figures 1 to 3 show a respiratory mask 1 according to one embodiment of the invention. This comprises a rigid body 2 not permeable to air, comprising a rear edge 3 intended to be applied in a sealed manner to the face of a user, the body 2 further comprising a front central opening 4 allowing the passage of 'an inhalation air flow and an exhalation air flow. The body 2 is for example made of a polymer material, for example of polyamide, for example of biocompatible PA12.
Un filtre 5, également appelé cartouche filtrante, est monté de façon amovible et étanche dans l’ouverture 4 du corps 2 de façon à ce que les flux d’air d’inspiration et d’expiration traversent en totalité ledit filtre 5. A filter 5, also called a filter cartridge, is removably and tightly mounted in the opening 4 of the body 2 so that the inhalation and exhalation air flows completely pass through said filter 5.
L’ouverture 4 et le filtre 5 sont circulaires et s’étendent selon un axe noté X. The opening 4 and the filter 5 are circular and extend along an axis denoted X.
Le filtre 5 est logé entièrement ou intégralement dans l’ouverture 4 du corps 2. The filter 5 is housed entirely or entirely in the opening 4 of the body 2.
Le filtre 5 ou cartouche filtrante peut remplir les spécifications de la norme EN 149, niveau P3. Le filtre 5 comporte un boîtier 5a, dans lequel est monté un élément filtrant 5b. Le filtre 5 peut être pré-conditionné avant montage dans l’ouverture 4 du corps 1. En d’autres termes, le porteur ou utilisateur n’a pas à placer et manipuler l’élément filtrant 5b par rapport au boîtier 5a du filtre 5, ce qui assure que l’élément filtrant 5b est correctement positionné par rapport au boîtier 5a du filtre 5. The filter 5 or filter cartridge can meet the specifications of standard EN 149, level P3. The filter 5 comprises a housing 5a, in which is mounted a filter element 5b. The filter 5 can be preconditioned before mounting in the opening 4 of the body 1. In other words, the wearer or user does not have to place and manipulate the filter element 5b with respect to the housing 5a of the filter 5. , which ensures that the filter element 5b is correctly positioned relative to the housing 5a of the filter 5.
Le boîtier 5a est ajouré de façon à permettre la circulation d’air au travers dudit boîtier 5a et de l’élément filtrant 5b logé dans le boîtier 5a. The housing 5a is perforated so as to allow the circulation of air through said housing 5a and the filter element 5b housed in the housing 5a.
Le boîtier 5a est fixé de manière amovible et étanche dans l’ouverture 4 du corps 2. En particulier, le boîtier 5a du filtre 5 est vissé dans l’ouverture 4 du corps 2. Le boîtier 5a peut ainsi comporter un filetage externe coopérant avec un taraudage interne de l’ouverture 4. Un montage de type baïonnette ou quart de tour peut également être envisagé. The housing 5a is fixed in a removable and sealed manner in the opening 4 of the body 2. In particular, the housing 5a of the filter 5 is screwed into the opening 4 of the body 2. The housing 5a can thus include an external thread cooperating with internal tapping of the opening 4. A bayonet or quarter-turn type assembly can also be considered.
Un joint torique, non représenté, peut être monté entre le boîtier 5a et le corps 2, dans l’ouverture 4. An O-ring, not shown, can be mounted between the housing 5a and the body 2, in the opening 4.
Le corps 2 comporte une première butée 6 permettant d’immobiliser le filtre 5 en position dans l’ouverture 4, selon une première direction orientée suivant l’axe X. The body 2 has a first stop 6 making it possible to immobilize the filter 5 in position in the opening 4, in a first direction oriented along the X axis.
Un organe de blocage 7 est en outre monté de façon amovible sur le corps 2, en particulier dans l’ouverture 4. L’organe de blocage 7 forme une seconde butée permettant d’immobiliser le filtre 5 en position dans l’ouverture 4, selon une seconde direction orientée suivant l’axe X, opposée à la première direction. A locking member 7 is also removably mounted on the body 2, in particular in the opening 4. The locking member 7 forms a second stop making it possible to immobilize the filter 5 in position in the opening 4, in a second direction oriented along the X axis, opposite to the first direction.
Dans la forme de réalisation illustrée à la figure 1 , la première butée 6 est formée par une collerette ou un épaulement annulaire 6 du corps 2. Dans cette forme de réalisation également, la première direction est orientée vers l’intérieur du masque 1. In the embodiment illustrated in Figure 1, the first stop 6 is formed by a flange or an annular shoulder 6 of the body 2. Also in this embodiment, the first direction is oriented towards the inside of the mask 1.
Dans la forme de réalisation illustrée aux figures 2 et 3, la première butée 6 est formée par une paroi ajourée, ici en forme générale de croix à deux branches 8. Dans cette forme de réalisation également, la première direction est orientée vers l’extérieur du masque 1. In the embodiment illustrated in Figures 2 and 3, the first stop 6 is formed by a perforated wall, here in the general shape of a cross with two branches 8. In this embodiment also, the first direction is oriented outwardly. of mask 1.
Dans chacune de ces deux formes de réalisation, l’organe de blocage 7 est un disque ajouré comportant ici une partie annulaire 9 radialement externe et une partie en forme de croix comportant deux branches 10 perpendiculaires dont les extrémités sont reliées à la partie annulaire 9. Bien entendu, toute autre forme de butée ou de paroi ajourée est également possible, aussi bien pour la première que pour la seconde butée, et quelle que soit la forme de réalisation. In each of these two embodiments, the locking member 7 is a perforated disc comprising here a radially outer annular part 9 and a cross-shaped part comprising two perpendicular branches 10, the ends of which are connected to the annular part 9. Of course, any other form of stop or perforated wall is also possible, both for the first and for the second stop, and whatever the embodiment.
L’organe de blocage 7 est maintenu en position sur le corps 2 par vissage, par encliquetage ou par tout autre moyen amovible permettant le retrait de l’organe de blocage 7 par rapport au corps 2. On notera que, dans la forme de réalisation de la figure 1 , l’organe de blocage 7 et le filtre 5 peuvent être retirés ou montés par l’extérieur du masque 1. A l’inverse, dans la forme de réalisation de la figure 2, l’organe de blocage 7 et le filtre 5 peuvent être retirés ou montés par l’intérieur du masque 1. The locking member 7 is held in position on the body 2 by screwing, snapping or any other removable means allowing the removal of the locking member 7 relative to the body 2. It will be noted that, in the embodiment of Figure 1, the blocking member 7 and the filter 5 can be removed or mounted from the outside of the mask 1. Conversely, in the embodiment of Figure 2, the blocking member 7 and filter 5 can be removed or fitted from inside mask 1.
Le bord arrière 3 du corps 2 est recouvert d’un joint à lèvres 11 en matériau souple, par exemple en silicone biomédical, destiné à être plaqué de façon sur le visage d’un porteur ou utilisateur en entourant la bouche, le nez et une partie au moins du menton du porteur. Le joint 11 est monté de manière amovible sur le bord 3 correspondant du corps 2. The rear edge 3 of the body 2 is covered with a lip seal 11 made of flexible material, for example biomedical silicone, intended to be pressed so onto the face of a wearer or user by surrounding the mouth, nose and a at least part of the wearer's chin. The seal 11 is removably mounted on the corresponding edge 3 of the body 2.
Le corps 2 comporte en outre des zones en saillie 12 formant de brides permettant le montage d’élastique 13 destinée à entourer l’arrière de la tête du porteur, comme cela est connu en soi, de façon à plaquer le joint 11 sur le visage du porteur. The body 2 further comprises projecting areas 12 forming flanges allowing the mounting of elastic 13 intended to surround the back of the wearer's head, as is known per se, so as to press the seal 11 on the face. of the wearer.
Comme indiqué précédemment, un tel masque 1 permet de filtrer à la fois le flux d’air entrant dans le masque ou flux d’inspiration, de façon à ne pas contaminer l’utilisateur, et le flux d’air sortant du masque 1 ou flux d’expiration, de façon à ne pas contaminer d’autres personnes dans le cas où l’utilisateur serait lui-même malade. En d’autres termes, le corps 2 ne comporte pas d’ouverture non filtrante risquant de laisser passer un flux d’air entrant ou sortant non filtré. As indicated above, such a mask 1 makes it possible to filter both the air flow entering the mask or inspiration flow, so as not to contaminate the user, and the air flow leaving the mask 1 or exhalation flow, so as not to contaminate other people in the event that the user is sick himself. In other words, the body 2 does not have an unfiltering opening that could allow an unfiltered incoming or outgoing air flow to pass.
Il est possible de conserver le corps 2 du masque 1 après utilisation et changer simplement le filtre 5 avant une nouvelle utilisation. Le filtre 5 peut être un filtre du commerce adapté à l’usage sanitaire du masque 1. It is possible to keep the body 2 of the mask 1 after use and simply change the filter 5 before using it again. The filter 5 can be a commercial filter suitable for the sanitary use of the mask 1.
Le corps 2 peut être décontaminé ou stérilisé thermiquement ou par voie chimique. La décontamination ou stérilisation par voie thermique peut consister à chauffer le corps 2, par exemple dans une étuve. La décontamination ou stérilisation par voie chimique peut être réalisée à l’aide d’une solution désinfectante, par exemple à d'hypochlorite de sodium, communément appelée eau de Javel. The body 2 can be decontaminated or sterilized thermally or chemically. Thermal decontamination or sterilization can consist of heating the body 2, for example in an oven. Chemical decontamination or sterilization can be carried out using a disinfectant solution, for example sodium hypochlorite, commonly called bleach.
Le joint 11 peut également être remplacé au besoin après une ou plusieurs utilisations. Le joint 11 peut également être décontaminé ou stérilisé de façon séparée du corps 2. The seal 11 can also be replaced as needed after one or more uses. The seal 11 can also be decontaminated or sterilized separately from the body 2.
On notera que le masque est dépourvu de valve expiratoire ou inspiratoire, que ce soit au niveau du filtre 5 ou au niveau d’une autre ouverture du corps 2. Note that the mask does not have an expiratory or inspiratory valve, either at the level of the filter 5 or at the level of another opening of the body 2.

Claims

REVENDICATIONS
1. Masque respiratoire (1) oro-nasal comportant un corps (2) non perméable à l’air comprenant un bord (3) destiné à être appliqué de façon étanche sur le visage d’un utilisateur, le corps (2) comportant au moins une ouverture (4) permettant le passage d’un flux d’air d’inspiration et d’un flux d’air d’expiration, un filtre (5) étant monté de façon amovible et étanche dans l’ouverture (4) du corps (2) de façon à ce que les flux d’air d’inspiration et d’expiration traversent en totalité ledit filtre (5), le filtre comportant un boîtier, dans lequel est monté un élément filtrant, le masque étant dépourvu de valve expiratoire ou inspiratoire, le bord (3) du corps (2) étant recouvert d’un joint (11 ) amovible en matériau souple. 1. Oronasal breathing mask (1) comprising a body (2) non-permeable to air comprising an edge (3) intended to be applied in a sealed manner to the face of a user, the body (2) comprising at the at least one opening (4) allowing passage of an inspiratory air flow and an exhalation air flow, a filter (5) being removably and tightly mounted in the opening (4) of the body (2) so that the inspiratory and expiratory air flows completely pass through said filter (5), the filter comprising a housing, in which is mounted a filter element, the mask being devoid of expiratory or inspiratory valve, the edge (3) of the body (2) being covered with a removable seal (11) made of flexible material.
2. Masque (1 ) selon la revendication 1 , caractérisé en ce que le filtre (5) est logé entièrement dans l’ouverture (4) du corps (2). 2. Mask (1) according to claim 1, characterized in that the filter (5) is housed entirely in the opening (4) of the body (2).
3. Masque (1) selon la revendication 1 ou 2, caractérisé en ce que le corps (2) est réalisé dans un matériau rigide. 3. Mask (1) according to claim 1 or 2, characterized in that the body (2) is made of a rigid material.
4. Masque (1) selon l’une des revendications 1 à 3, caractérisé en ce qu’il comporte des moyens (6, 7) de maintien du filtre (5) dans l’ouverture (4). 4. Mask (1) according to one of claims 1 to 3, characterized in that it comprises means (6, 7) for holding the filter (5) in the opening (4).
5. Masque (1) selon la revendication 4, caractérisé en ce que les moyens de maintien comportent une première butée (6) empêchant le retrait du filtre (5) par rapport à l’ouverture (4), dans une première direction, et une seconde butée (7), montée de manière amovible sur le corps (2) au niveau de l’ouverture (4), et empêchant le retrait du filtre (5) par rapport à l’ouverture (4), dans une seconde direction, opposée à la première direction. 5. Mask (1) according to claim 4, characterized in that the holding means comprise a first stop (6) preventing the withdrawal of the filter (5) relative to the opening (4), in a first direction, and a second stop (7), removably mounted on the body (2) at the level of the opening (4), and preventing the withdrawal of the filter (5) relative to the opening (4), in a second direction , opposite to the first direction.
6. Masque (1 ) selon l’une des revendications 1 à 5, caractérisé en ce que le corps (2) est équipé d’au moins un organe élastique (13) apte à plaquer le bord (3) du corps (2) du masque (1) en appui sur le visage de l’utilisateur. 6. Mask (1) according to one of claims 1 to 5, characterized in that the body (2) is equipped with at least one elastic member (13) adapted to press against the edge (3) of the body (2) of the mask (1) resting on the user's face.
PCT/FR2021/050637 2020-04-15 2021-04-09 Oro-nasal respiratory mask WO2021209705A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FRFR2003784 2020-04-15
FR2003784A FR3109269B1 (en) 2020-04-15 2020-04-15 Oro-nasal breathing mask

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WO2021209705A1 true WO2021209705A1 (en) 2021-10-21

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4951664A (en) * 1988-09-09 1990-08-28 Filcon Corporation Mask and method of manufacture
KR20110026744A (en) * 2009-09-08 2011-03-16 김소라 Health mask
KR101789107B1 (en) * 2017-03-23 2017-10-23 (주)신형아이엔티 Dust mask with different materials

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521630A (en) * 1967-04-07 1970-07-28 Minnesota Mining & Mfg Respirator face mask with replaceable filter
DE20005959U1 (en) * 2000-03-31 2000-06-21 Chen Tse Hsiung Improved structure of a breathing mask

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4951664A (en) * 1988-09-09 1990-08-28 Filcon Corporation Mask and method of manufacture
KR20110026744A (en) * 2009-09-08 2011-03-16 김소라 Health mask
KR101789107B1 (en) * 2017-03-23 2017-10-23 (주)신형아이엔티 Dust mask with different materials

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FR3109269A1 (en) 2021-10-22

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