WO2021205182A1 - Capuche - Google Patents

Capuche Download PDF

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Publication number
WO2021205182A1
WO2021205182A1 PCT/GB2021/050874 GB2021050874W WO2021205182A1 WO 2021205182 A1 WO2021205182 A1 WO 2021205182A1 GB 2021050874 W GB2021050874 W GB 2021050874W WO 2021205182 A1 WO2021205182 A1 WO 2021205182A1
Authority
WO
WIPO (PCT)
Prior art keywords
hood
cuff
barrier
hose
strap
Prior art date
Application number
PCT/GB2021/050874
Other languages
English (en)
Inventor
Michael Bradley
Ian BIRKINSHAW
Charles Williams
Peter SLEE-SMITH
Adrian SIMS
John Colvin
Original Assignee
Worksafe Design Limited
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 Worksafe Design Limited filed Critical Worksafe Design Limited
Publication of WO2021205182A1 publication Critical patent/WO2021205182A1/fr

Links

Classifications

    • 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
    • A41D13/1153—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a hood
    • 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
    • A41D13/002—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment
    • A41D13/0025—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment by means of forced air circulation
    • 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
    • A41D13/1184—Protective face masks, e.g. for surgical use, or for use in foul atmospheres with protection for the eyes, e.g. using shield or visor
    • 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
    • A62B18/04—Gas helmets
    • 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

  • the present teachings relate to a hood, particularly, but not exclusively, a hood to provide physical protection against infection from viruses and the like.
  • the present teachings relate to a respiration system including the hood.
  • PPE personal protection equipment
  • the use of masks and visors provide multiple junctions where viruses can bypass the protection and reach a mucous membrane, particularly if accidentally dislodged or improperly fitted.
  • the equipment is uncomfortable and sweaty, impairs communication and visibility, and when being doffed, creates a further risk of an infectious pathogen passing from the equipment itself into in particular the eyes of the wearer.
  • this type of PPE can be intimidating for the patient as it prevents good communication and looks visually imposing. It may also not be effective at preventing a wearer who unknowingly has a particular disease from accidentally infecting the patient or their fellow workers.
  • hoods are known in industrial environments for use in welding, and paint spraying, but are prohibitively expensive, offer restricted fields of view and are not concerned with the capture of material expelled from the hood.
  • a first aspect of the present teachings provides a hood for wearing over a head of a user to provide protection against airborne matter such as virus containing aerosols and the like; the hood comprising a barrier enclosing the head and formed at least partially of transparent flexible sheet material, a structure to permit the connection of a hose thereto from a clean air supply, a cuff arranged around the lower edge of the barrier to sit against a neck of the user, optionally wherein the cuff is formed at least partially of a permeable material so as permit egress of air whilst capturing aerosols and/or particles therein.
  • the flexible barrier material prevents the direct transfer of contaminated matter onto the skin of the user via airborne transfer or physical contact. Further by being able to supply clean air into the hood, a positive pressure is generated that inhibits the seepage of contaminated airborne matter past the barrier, as well as supporting respiration of the user, performing a cooling function and inhibiting the build-up of condensation on the interior of the hood.
  • the cuff of permeable material provides a route for the controlled egress of air from the hood, to help maintain the positive pressure, but also may act to filter out at least a proportion of aerosols and/or particles in the air that is vented.
  • a hood may be constructed at low cost and without specialist equipment or tooling, and so can be disposable. Hoods of this type also allow users to wear spectacles, hard hats or other PPE without them interfering with use or efficacy of the hood. Further a hood is secure and therefore not easily dislodged. However when being removed, there is less risk of infectious material being accidentally being brought into contact with the user's mucous membranes.
  • the permeable material is a flexible sheet material.
  • the cuff comprises an adjustment mechanism, e.g. a hook and loop fastener, buckle, elasticated and/or drawstring arrangement.
  • the adjustment mechanism is arranged to be fastened or secured at a frontal region of the hood.
  • frontal we mean the front 180° of the hood in plan view when worn.
  • the adjustment mechanism is arranged to be fastened or secured in a region 45° either side of a direct forward axis of the hood.
  • the adjustment mechanism comprises: a first strap including a free end; and a second strap including a free end; wherein a portion of each of the first strap and the second strap is secured to the cuff, wherein each free end is configured to be releasably connected to the other of the strap and/or to a connector mounted on the cuff via a fastening arrangement, e.g. a hook-and-loop fastening arrangement.
  • a fastening arrangement e.g. a hook-and-loop fastening arrangement.
  • the cuff comprises the structure for connection of the hose.
  • This provides a simple structure that does not, for example, require a fitting to be welded to the hood to mount the hose and allows the hose to be connected at the base of the hood where it does not impair mobility.
  • the structure comprises a discrete through-passage formed in the cuff for the insertion of the hose therein.
  • a passage being formed e.g. by stitching or bonding overlying parts of the cuff to form a passage into the hood of appropriate size for a hose.
  • the through-passage may extend from the bottom to the top of the cuff,
  • Such a passage may be formed by may be a simple linear bonding or stitching operation to form a separate portion of the cuff from the major portion that receives the neck of the user
  • the structure further comprises retainer mechanism to hold the hose within the through passage.
  • the retainer mechanism comprises a flexible cord, tie, strap, webbing or ribbon arrangement.
  • Such arrangements can be tied or otherwise secured around the hose to hold it in place within the passage. They are not complex to manufacture and are low cost.
  • the permeable material is a fibrous material.
  • Fibrous material is typically low cost, effective, and comfortable to wear.
  • the cuff is formed of a woven or non-woven fibrous material, e.g. woven thread material such as cotton, wool, polyester or the like.
  • Such materials are readily available and may provide the required combination of permeability and capture of aerosols and particulates.
  • the cuff is formed from at least 50% permeable material, optionally being substantially entirely of permeable material.
  • more than 50%, optionally more than 70% or optionally more than 90% of a surface of the barrier is formed of transparent flexible sheet material e.g. polyvinyl chloride.
  • substantially all of the barrier is formed of transparent flexible sheet material.
  • the barrier further comprises a port for the insertion of a straw or an ear tip of a medical instrument such as a stethoscope therethrough.
  • the positive pressure means that any airflow is away from the user, but a flap or adhesive cover may nevertheless be used to selectively close the port.
  • the port comprises an opening in the barrier and a flap arranged to selectively close said opening.
  • the flap extends from an interior surface of the barrier.
  • the positive pressure may cause the interior flap to close the opening when not in use.
  • a second aspect of the present teachings comprises a respiration system comprising a hood according to the first aspect and an air delivery unit
  • the air delivery unit comprises a TH2 or TH3 level, or equivalent standard, filter.
  • Such a filter captures aerosols and particles that may carry viruses or other pathogens so they are not transferred into the hood.
  • a hose connects the filter to the hood, optionally the hose being ribbed.
  • the air delivery unit further comprises a fan and energy storage device, such as a battery, arranged to power the fan.
  • a sound attenuation device is provided upstream of the hood.
  • Figure 1 is a front view of a user wearing a hood and respiration system of the present teachings
  • Figure 2 is a side view of the user wearing a hood and respiration system of the present teachings
  • Figure 3 is side view of the hood of Figure 1;
  • Figure 4 is a close-up view of a cuff of the hood of Figure 1;
  • Figure 5 is a close-up view of a through passage in the cuff
  • Figure 6 is a close up view of a hose inserted into the passage
  • Figure 7 is a rear view of an alternative embodiment of an adjustment mechanism
  • Figure 8 is a front view of the adjustment mechanism of Figure 7.
  • Figure 9 is a cross-sectional view of the adjustment mechanism of Figure 7 in a fully secured condition.
  • Figures 1 and 2 show a user 2 wearing a respiration system 10 of the present teachings incorporating a hood 12 of the present teachings.
  • the respiration system 10 further comprises a powered filter unit 14 and a noise attenuation unit 16 interconnected by a hose 18.
  • a further hose 20 connects the noise attenuation unit to the hood 12.
  • the powered filter unit 14 and noise attenuation unit 16 are mounted to a belt (not visible) around the user's waist so as to allow free movement of the wearer whilst the respiration system 10 is operating.
  • the powered filtered unit 14 and/or the noise attenuation unit 16 may instead be mounted to a backpack or sling.
  • the noise attenuation unit minimises the noise generated by the fan, so communication between the user and colleagues and patients with whom they interact is improved.
  • the powered filter unit 14 and noise attenuation unit 16 may be incorporated within the same housing to further enhance the mobility of the respiration system.
  • ambient air is drawn into the respiration system 10 via an inlet (not shown) of the powered filter unit 14, a fan (not shown) of the unit draws air through a suitable filter (not shown) where aerosols and other particles that may contain viruses and other pathogens are captured and then forces the filtered air through the hose 18 into the noise attenuation unit 16.
  • the filtered air is then delivered via the second hose 20 to the hood 12.
  • the powered filter unit 14 further comprises batteries (not shown).
  • the batteries are preferably rechargeable and may either be of a sufficient capacity to enable air to be delivered for a complete shift or working day (e.g., for 8 hours) and/or may be interchangeable so as to facilitate a rapid battery change if they become depleted.
  • a compressed air supply may be provided on the wearer's body or the respiration system may connect to a central air supply (e.g. of a hospital).
  • a suitable indication may be provided to the user 2 such as an audible, haptic or visual warning when the battery state is low and the supply of air will therefore shortly cease.
  • the speed of the fan may be controllable, e.g., to increase the airflow if the user is in a hot or humid environment and therefore requires a greater cooling effect.
  • this is provided with filter media that meets at least a TH2 but preferably a TH3 level of filtration, or an equivalent filtration level.
  • This level of filtration may be achieved by using a suitable high efficiency particulate air (HEPA) filter.
  • HEPA high efficiency particulate air
  • Such filters are effective in the current application since although virus molecules are themselves not entirely captured by such filters, their transmission into the human body is typically via being entrained within a liquid aerosol (that may be for example generated when an infected patient coughs) or by being attached to a solid particle that is suspended in the air. Both aerosols and solid particles are effectively captured by such filters.
  • the hose 20 delivering the air to the hood 12 may have a ribbed outer profile (see for example Figure 6) for reasons discussed in more detail below.
  • hood 12 is shown in more detail.
  • the hood 12 comprises a barrier 22 and a cuff 24.
  • the barrier is formed entirely from a transparent flexible sheet material, for example polyvinyl chloride (PVC).
  • PVC polyvinyl chloride
  • a suitable gauge of material may be in a range of 0.2-0.7mm, e.g. 0.2, 0.3mm or 0.5 mm. Such material has excellent barrier properties against the aforesaid aerosols and particles, whilst being lightweight and offering high clarity.
  • the barrier is formed from a vertically extending tubular portion 26 and a disc-shaped top portion 28.
  • the tubular portion 26 and top portion 28 may be stitched, heat or ultrasonically welded together to form an impermeable barrier.
  • this construction allows the height of the hood to be easily adapted for different applications simply by altering the height of the tubular portion 26. For example, if a user is required to wear a hard hat under the hood, the height of the tubular portion 26 may be increased to accommodate it. Nevertheless, it will be appreciated that in other embodiments, different shapes may be used, such as domes.
  • a barrier 22 that is wholly transparent is preferred. However, it will be appreciated that in certain applications it may be desirable that a portion of the barrier 22 may be manufactured from opaque or translucent material, e.g., to provide shading in sunny environments. However, it is anticipated that at least 50% of the surface of the barrier 22 be transparent such that the visibility of the user 2 outwards is maintained, and the barrier also does not overly obstruct the view of the user by people who are interacting with the user.
  • the barrier is provided with a port 52 through which a straw may be introduced for refreshment whilst the hood is fitted.
  • This may be an opening of e.g. 1cm or less in diameter that is covered by a flap 54 on the interior.
  • the flap 54 extends from an interior surface of the barrier 22. In normal use, positive air pressure within the hood closes the flap, but if a straw is introduced the flap opens to allow it through. In other embodiments the flap may not be needed (provided the airflow is sufficient to keep the hood inflated whilst it is open), or the port may be omitted entirely.
  • the barrier 22 may further be provided with two ports 52' (only one of which is shown in Figure 3) through which ear tips of a stethoscope may be introduced for insertion into the ears of the user 2.
  • Each port 52' may be an opening of e.g. 2cm or less in diameter that is cover by a flap 54' on the interior.
  • the flap 54' extends from an interior surface of the barrier 22. In other embodiments the flap 54' may not be needed (provided the airflow is sufficient to keep the hood inflated whilst it is open), or one or both of the ports 52' may be omitted entirely.
  • the cuff 24 is principally a flexible sheet mounted to the lower margin of the barrier 22 around the full perimeter thereof.
  • the cuff 24 is arranged to fit around a neck 6 of the user 2 and comprises an adjustment mechanism 30 that enables the cuff to be adjusted to provide a snug fit around the neck (e.g., as snug as a person would typically wear a tie).
  • the adjustment mechanism comprises a strap or webbing 32 that is held within loops 34 arranged around the surface of the cuff 24 to enable the strap to slide relative to the cuff.
  • a free end of the strap 32 is provided with one part 36 of a hook and loop fastener (e.g., hooks) that may be releasably fastened to the other part 38 (e.g., loops) that are secured to the surface of the cuff 24.
  • the cuff 24 is a permeable material.
  • the cuff is manufactured from a sheet of woven fabric that has inherently permeable characteristics. This may for example be a woven cotton, wool or other natural fibre or woven artificial fibres such as polyester or acrylic. In other embodiments a non-woven permeable material may be used.
  • the permeability of such materials is important, since it allows for the controlled escape of the air being pumped into the hood so as to maintain a positive pressure within the hood 12 that keeps it inflated and prevents the seepage of non-filtered air into the hood.
  • the permeable material additionally captures aerosols and particles that may be generated during the breathing of the user 2. This may be particularly important in certain settings such as healthcare where the user 2 may unknowingly be infected with a particular virus or other infectious disease and may be at risk of transmitting that disease to their co-workers or patients that are not otherwise infected.
  • such materials also tend to be comfortable to be worn against the skin and can wick away perspiration such that the user remains cool, and present a low risk of allergic reactions.
  • substantially all the cuff 24 is formed from permeable material, it will be appreciated that in other embodiments some of the perimeter of the cuff may be formed from non-permeable material, provided that egress of air is not unduly restricted.
  • a further line of stitching 42 extends the full height of the cuff 24 towards the rear of the hood.
  • This stitching 42 sub-divides the cuff into a major portion that receives the user's head and sits around the user's neck as described above and a minor portion 46 that acts as a passage to receive the hose 20 in order to supply air into the hood 12.
  • the location of the stitching 42 will be determined by the diameter of the hose 20, with the passage 46 formed by the stitching allowing the hose to be inserted relatively easily, but not being too large that the hose 20 is too loose a fit.
  • a retainer mechanism 45 is additionally provided such that when the hose 20 is inserted into the passage 46 as depicted in Figure 6, it does not fall out under gravity or under axial loads caused by movement of the wearer. Specifically, safety standards dictate that the connection of the hose to the hood must be able to resist an axial force due to a mass of 15kg.
  • the retainer mechanism 45 comprises three flexible cords 48 that encircle the passage 46 when tied (see Figure 6 in which only one cord is shown for clarity).
  • the cords 48 can compress the walls of the passage 46 into the valleys of the ribbing to enhance the mechanical retention of the hose to the passageway.
  • Corresponding slits or eyelets 50 are provided in the opposing walls of the major portion 44 of the cuff adjacent the stitching 42, through which the cords 48 are fed in order to facilitate their encircling of the passage 46.
  • three cords 48 are shown in this embodiment, it will be appreciated that in other embodiments the number may be adjusted as required to give a suitable level of retention.
  • alternative retainer mechanisms may be used such as one or more cords or tapes stitched into the sides of the passage, hook and loop fasteners, plastic cable ties, elasticated cords, adjustable buckles in conjunction with webbing or ribbons, for example.
  • the user 2 will initially, when in a non-hazardous environment, connect the hose 20 to the hood 12 using the retainer mechanism 45 as described above. They will mount the powered filter unit 14 and noise attenuation unit 16 around their waist, don the hood 12 over their head 4, turn on the powered filter unit 14 to provide the supply of air, and then use the adjustment mechanism 30 to ensure a snug but comfortable fit around their neck 6.
  • the user is then ready to enter an infectious or hazardous environment with the respiration system operable to provide suitable protection from infection or other hazardous airborne pathogens or hazardous material.
  • the respiration system 10 operable to provide suitable protection from infection or other hazardous airborne pathogens or hazardous material.
  • the user touches their face with their hands This may not be the case with conventional PPE in which the eyes in particular are exposed.
  • the respiration system 10 users with glasses or beards are not operationally disadvantaged and protection is not compromised.
  • the user 2 can adjust their glasses or indeed, even remove them entirely by depressing the flexible material of the barrier 22 and grasping their glasses without potentially transferring pathogens onto their surface.
  • other safety equipment ear defenders, communication systems etc may be worn and adjusted under the hood.
  • the user 2 may utilise the drinking port 52 in the barrier 22 to consume liquid refreshments or food without needing to remove the hood.
  • Removal of the respiration system may be achieved quickly and safely by releasing the adjustment mechanism 30 and lifting the hood 12 over the user's head 4.
  • the hose 20 can be released from the passage 46 and the hood 12 disposed of or alternatively disinfected prior to re-use, for example, in a dilute bleach solution, or a suitable decontaminant for the particular contaminant that has been encountered.
  • FIGs 7 to 9 show an alternative embodiment of the adjustment mechanism 30'.
  • the adjustment mechanism 30' comprises a first strap or webbing 32a', a second strap or webbing 32b' and a connector patch 38'.
  • the straps 32a', 32b' may be held within one or more loops 34.
  • a portion of each strap 32a', 32b' is secured to a rear portion of the cuff 24 via a line of stitching 72.
  • the straps 32a', 32b' may be secured to the cuff 24 via any suitable means such as via an adhesive for example.
  • the first strap 32a' includes a first end portion 74a including a free end 76a and the second strap 32b' includes a second end portion 74b including a free end 76b.
  • the end portions 74a, 74b each include a first surface comprising a plurality of hooks 78, and an opposite second surface including a plurality of loops 80 - i.e. to be a hook and loop fastener of the Velcro R TM type.
  • the connector patch 38' is secured to a front portion of the cuff 24 via stitching, and includes a plurality of loops 80. It will be appreciated that the connector patch 38' may be secured to the cuff 24 via any suitable method.
  • the first strap 32a' is first releasably secured to the connector patch 38' via the interengagement of the hooks 78 on the first end portion 74a with the loops 80 on the connector patch 38'.
  • the second strap 32b' is releasably secured to the first strap 32a' via the interengagement of the hooks 78 on the second end portion 74b with the loops 80 on the second surface of the first end portion 74a.
  • the second strap 32b' may be releasably secured to the connector patch 38' and the first strap 32a' may be releasably secured to the second strap 32b.
  • the connector patch 38' and the second surfaces of the end portions 74a, 74b may each include a plurality of hooks and the first surfaces of the end portions 74a, 74b may include a plurality of loops.
  • the first strap 32a' and/or the second strap 32b' may include elasticated portions; for example, extending between the respective end portions 74a, 74b and the lines of stitching. This provides for more "give” to the adjustment mechanism during movement of the wearer.
  • the adjustment mechanism 30' allows for easy adjustment of the cuff 24 since either the first strap 32a' or the second strap 32b' can be tightened and releasably secured to the connector patch 38' first. Therefore, the user 2 is not required to remember an order for which strap needs to be secured first and can choose whichever is most convenient depending upon whether they are right- or left-handed. Further, providing the adjustment mechanism at the front, has been found to offer ergonomic benefits during adjustment and removal of the hood 22.
  • Both embodiments of the adjustment mechanism 30, 30' may be used in conjunction with pressure sensing e.g. in the powered filter unit to ensure that the pressure within the hood is within a suitable range for the safe and efficient operation of the respiration system.
  • the cuff 24 may be extended in length to additionally act as an apron, gown or poncho, depending upon the type of permeable material used for the cuff, the stitching may be replaced with heat or ultrasonically bonded seams, or the cuff may be adhesively secured to the barrier.
  • respiration system Whilst the teachings have been described primarily in the context of use of the respiration system in healthcare environments, it should be understood that such a system may be used by other key workers that come into contact with viruses such as Covid-19 and other pathogens in the course of their work, such as police officers, fire fighters, nursing home workers, cleaners, logistics personnel, retail personnel, or indeed users of public transport or workers that may have particular concerns or be particularly vulnerable to infection. Additionally, the respiration system may be used for other purposes, such as for hay fever sufferers wishing to avoid contact with pollen or other similar allergy sufferers. With suitable filtration the hood and respiration system may also be used to provide protection against hazardous dust and fibres such as asbestos, wood, pharmaceuticals, food etc.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Textile Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Toxicology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Pulmonology (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

La présente invention concerne une capuche (12) destinée à être portée sur la tête (4) d'un utilisateur (2) pour fournir une protection contre des matières en suspension dans l'air telles que des aérosols contenant des virus et similaires ; la capuche (12) comprenant : une barrière (22) entourant la tête (4) et formée au moins partiellement de matériau en feuille souple transparent ; une structure (45) pour permettre la liaison d'un tuyau flexible (20) à partir d'une alimentation en air propre, un manchon (24) disposé autour du bord inférieur de la barrière (22) pour être en contact contre un col (6) de l'utilisateur (2), éventuellement le manchon (24) étant formé au moins partiellement d'un matériau perméable de façon à permettre la sortie d'air tout en capturant des aérosols et/ou des particules à l'intérieur de celui-ci.
PCT/GB2021/050874 2020-04-09 2021-04-09 Capuche WO2021205182A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2005330.2 2020-04-09
GB2005330.2A GB2593928A (en) 2020-04-09 2020-04-09 Hood

Publications (1)

Publication Number Publication Date
WO2021205182A1 true WO2021205182A1 (fr) 2021-10-14

Family

ID=70848137

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2021/050874 WO2021205182A1 (fr) 2020-04-09 2021-04-09 Capuche

Country Status (2)

Country Link
GB (1) GB2593928A (fr)
WO (1) WO2021205182A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896617A (en) * 1955-11-03 1959-07-28 Wesley A Gibbons Air supplied hood structure
US4864654A (en) * 1988-05-06 1989-09-12 The United States Of America As Respresented By The Secretary Of The Army Protective hood jacket resistant to toxic environments
EP0507606A1 (fr) * 1991-04-05 1992-10-07 Chicopee Cagoule chirurgicale
WO2009070403A1 (fr) * 2007-11-28 2009-06-04 3M Innovative Properties Company Système d'inhalation comprenant une suspension de tête amovible

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4455687A (en) * 1981-04-20 1984-06-26 Helen Frances Johansson Head cover and safety helmet
US6012175A (en) * 1998-03-11 2000-01-11 No Fade Coatings, Inc. Disposable safety hood with filtered ventilation tube
KR100934969B1 (ko) * 2008-02-15 2010-01-06 이종원 일회용 구명건
ITMI20080427A1 (it) * 2008-03-13 2009-09-14 Dimar S R L Casco per la respirazione artificiale senza l'ausilio di maschera facciale o tubi tracheali a vestibilita' migliorata
GB0915816D0 (en) * 2009-09-10 2009-10-07 Smiths Medical Int Ltd Breathing apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896617A (en) * 1955-11-03 1959-07-28 Wesley A Gibbons Air supplied hood structure
US4864654A (en) * 1988-05-06 1989-09-12 The United States Of America As Respresented By The Secretary Of The Army Protective hood jacket resistant to toxic environments
EP0507606A1 (fr) * 1991-04-05 1992-10-07 Chicopee Cagoule chirurgicale
WO2009070403A1 (fr) * 2007-11-28 2009-06-04 3M Innovative Properties Company Système d'inhalation comprenant une suspension de tête amovible

Also Published As

Publication number Publication date
GB2593928A (en) 2021-10-13
GB202005330D0 (en) 2020-05-27

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