EP3909648A1 - Demi-masque pour la bouche et le nez, corps de base d'un demi-masque et procédé de fabrication d'un corps de base - Google Patents

Demi-masque pour la bouche et le nez, corps de base d'un demi-masque et procédé de fabrication d'un corps de base Download PDF

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Publication number
EP3909648A1
EP3909648A1 EP20173874.7A EP20173874A EP3909648A1 EP 3909648 A1 EP3909648 A1 EP 3909648A1 EP 20173874 A EP20173874 A EP 20173874A EP 3909648 A1 EP3909648 A1 EP 3909648A1
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EP
European Patent Office
Prior art keywords
base body
person
half mask
nose
mouth
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.)
Withdrawn
Application number
EP20173874.7A
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German (de)
English (en)
Inventor
Sören Hohlbein
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.)
Millhouse GmbH
Original Assignee
Millhouse 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 Millhouse GmbH filed Critical Millhouse GmbH
Priority to EP20173874.7A priority Critical patent/EP3909648A1/fr
Publication of EP3909648A1 publication Critical patent/EP3909648A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/02—Masks
    • A62B18/025—Halfmasks

Definitions

  • the invention relates to a half-mask for the mouth and nose of a person wearing the half-shell, furthermore a base body of a half-mask for the mouth and nose, and finally a method for producing a base body of a half-mask.
  • Half masks are used to enclose the mouth and nose of a person wearing the half mask.
  • the eye area of the person is left out, in contrast to a full mask.
  • Particle-filtering half masks so-called FFP half masks, protect against inhalation of particles and aqueous or oily aerosols, depending on the version.
  • FFP half masks are classified into three classes.
  • the overall leakage of a half mask which is made up of leakage points on the face, the leakage on an exhalation valve, if one is present, and the actual filter passage, is used for assessment.
  • FFP-1, FFP-2 and FFP-3 are classes.
  • FFP-3 the total leakage is a maximum of 5%.
  • These half masks provide a protective effect against particle sizes (max. 0.6 ⁇ m) of at least 99%.
  • the half masks also ensure protection against droplet aerosols and Microorganisms (viruses, bacteria, fungi and their spores).
  • Such half masks are also provided with an exhalation valve, for example, in order to reduce breathing resistance.
  • mouth and nose protection also referred to in the literature as mouth guards, surgical masks, surgical face masks or hygiene masks
  • mouth guards are half masks that are used in medicine to reduce the transmission of pathogens through secretion droplets of the mask user.
  • An integrated flexible metal bracket in the middle of the upper edge of the half mask is used to press it to the bridge of the nose in order to keep the field of vision free and to restrict the upward escape of breathing air.
  • This medical mouth and nose protection is to be distinguished from simple paper or cloth masks, so-called everyday masks, which are self-made makeshift masks.
  • a manufacturing method for a dental aid from a thermoplastically deformable plastic plate is known.
  • the plastic plate is deep-drawn within a deep-drawing device on a physical working model and the dental aid is produced by cutting along a cutting line from the deep-drawn plastic plate.
  • the dental aid is, for example, a dental splint that is produced from thermoplastically deformable plastics by a forming process, known as deep drawing.
  • Deep drawing also known as thermoforming, hot forming or vacuum deep drawing, is a process for forming thermoplastics.
  • a dental model, the so-called work model is used as a template for the forming process and is generated, for example, according to a digital work model, for example by means of computer-aided manufacturing (CAM).
  • CAM computer-aided manufacturing
  • the dental aids are, for example, gnash splints, correction splints, face splints.
  • a method and a device for deep-drawing plates including plates with a smaller wall thickness in the sense of foils, is understood to refer to individual stumps in dental technology from the DE 198 01 532 A1 known.
  • the plate is deep-drawn by applying a vacuum.
  • a deep-drawing device in particular for dental purposes, is also from DE 295 08 269 U1 known.
  • thermoplastically deformable plastics in the manufacture of prostheses and orthotics.
  • the object of the present invention is to create a half mask for the mouth and nose which is particularly simple in design and can be produced quickly and inexpensively.
  • the object of the invention is also to provide a particularly simple designed base carrier for a half mask for the mouth and nose.
  • the invention proposes a base body of a half mask for the mouth and nose of a person wearing the half mask.
  • the base body is made in one piece and is designed as a flat structure. It consists of thermoplastically deformable plastic.
  • the base body is adapted to the face contour of the person in a circumferential area, in an area of the base body surrounding the mouth and nose.
  • the base body has connections, arranged on opposite sides, for fastening means that can be connected to the base body for mounting the base body on the head of the person.
  • the base body has at least one opening for receiving an air filter in the respective opening.
  • the base body Because of this design of the base body, it forms a cavity between the base body and the facial contour in the area of the person's mouth and nose. In the circumferential area of the base body, in which it is adapted to the face contour of the person, the base body preferably rests against the head of the person along the circumferential area. Accordingly, it is provided in particular that the main body is sealed there from the head of the person, so that both the inhaled air and the exhaled air of the person are guided through the respective opening in the main body, thus through the air filter when the air filter is inserted into this opening.
  • the base body is made of thermoplastically deformable plastic, it can be shaped in the heated state to match the facial contour of the person. It is not necessarily provided here that the Base body is individually adapted to the facial contour of the respective person wearing the half mask. It is considered sufficient to have standardized basic bodies in a few different sizes, which are then suitable for different people.
  • the base body Due to the one-piece design of the base body and the design of the base body as a flat structure, it can be produced in the simplest manner from a plate made of thermoplastically deformable plastic. It is only necessary to deform a flat plate into the desired shape of the base body.
  • the base body is designed in such a way that it has a nose section for covering the nose of the person, two cheek sections for covering the person's cheeks, a chin section for covering a chin of the person, and the base body has a mouth section between the nose section, the cheek sections and the Has chin section.
  • the base body consists exclusively of these sections.
  • the cheek sections have the connections for the fastening means, which can be connected to the base body, for mounting the base body on the head of the person.
  • the at least one opening for receiving the air filter is preferably arranged in the mouth section or in the cheek section.
  • the base body is transparent.
  • the entire facial contour of the person covered by the base body can be seen by third parties, apart from a cover that can be provided by the fastening means and the air filter.
  • the mouth section of the base body is transparent.
  • the base body or the half-mask can be used particularly advantageously where it is important, the mouth movements or facial expressions of the person wearing the half-mask to be able to track.
  • This is of particular advantage in teaching, language training, voice training and the like, for example.
  • third parties can largely unrestrictedly follow the facial expressions and / or the speaking behavior of the person wearing the half mask.
  • the respective opening in the base body for receiving the air filter is arranged outside the mouth section.
  • the mouth section is not covered by the air filter and accordingly the mouth section is freely visible to third parties.
  • Two openings are preferably provided in the area of the cheek sections or the chin sections to accommodate two air filters outside the mouth section.
  • the thickness of the flat structure in particular the thickness of the respective nose section, cheek section, chin section, mouth section, is preferably only a fraction of a millimeter to a few millimeters, for example 0.5 to 1.5 mm.
  • the thinner-walled the sheet-like structure the more pliable or flexible it is in the unheated state, i.e. when the half-mask is worn, with which the base body can particularly well rest against the facial contour of the person in its circumferential area and seal there.
  • the base body can be provided with a circumferentially arranged sealing element, in particular a sealing band, in its circumferential area.
  • the sealing element is in particular one made of silicone.
  • the half mask according to the invention for the mouth and nose of a person wearing the half mask has a one-piece base carrier made of a thermoplastically deformable plastic, in particular a base carrier as described above.
  • the basic carrier is in one circumferential area of the face contour of the person, in an area surrounding the mouth and nose.
  • the half mask has fastening means, which are arranged on opposite sides of the base body and are connected to the base body, for mounting the base body on the head of the person.
  • the half mask has at least one air filter for filtering exhaled and / or inhaled air from the person, the base body having at least one opening within its circumferential area for receiving the at least one air filter.
  • the respective air filter is sealed off from the base body. Particularly when the base body is sealed in its circumferential area towards the head, it is thus ensured that the person's inhaled and exhaled air is almost completely guided through the respective air filter.
  • the half mask is preferably designed in such a way that the respective air filter has a projection inserted into the respective opening.
  • the respective air filter is held in the base body via a latching connection and / or a plug / rotary connection.
  • the half mask is in particular an FFP mask, in particular an FFP mask of class FFP-3. This half mask can therefore be used as a respiratory protection mask in the medical field.
  • the half mask can also be used as mouth and nose protection, especially if the respective air filter is of a simpler design.
  • filter elements of the air filter can be designed as cotton pads, nonwoven fabric, in particular consisting of polypropylene, or as cotton fabric.
  • the fastening means of the half mask are designed in particular as straps. These are tied behind the head or placed behind the ears of the person with the base body placed against the facial contour of the person.
  • the straps can be made of elastic material.
  • the invention also proposes a method for producing a base body, as discussed in principle as described above.
  • a working model with a contour corresponding to the inner surface contour or the outer surface contour of the base body is first generated.
  • at least a partial surface of the plate is reshaped into the shape of the base body from a flat, heated plate made of thermoplastically deformable plastic.
  • the at least one opening for receiving the at least one air filter and / or connections for the fastening means are also formed by the working model.
  • the working model is generated digitally.
  • thermoplastically deformable plastic it is essential that it can be deformed when a material-specific heating temperature is reached, in order to convert the initial shape of the preferably flat plate into the shape of the base body.
  • the plastic At a temperature below a softening temperature range of the plastic, in particular at the person's body temperature, the plastic is hard (crystalline) or tough-hard (partially crystalline).
  • a flexibility of the base body is preferred which, due to the plastic property and / or the wall thickness of the base body, allows it to be optimally adapted to the facial contour of the person in the area of the facial contour surrounding the mouth and nose.
  • thermoplastically deformable plastic is above the temperature at which Microorganisms (viruses, bacteria, fungi and their spores) are effectively killed.
  • the softening temperature range is relatively low, this has the advantage that under the action of heat, the base body can be more easily adapted to the face contour of the person, in particular by wearing the half mask with the standardized shaped base body is post-deformed. In this case, the microorganisms would be killed in particular by means of a disinfectant.
  • thermoplastically deformable plastic is preferably polyethylene (PE), in particular polyethylene terephthalate (PETG).
  • PE polyethylene
  • PET polyethylene terephthalate
  • the method according to the invention for producing the base body makes it possible in an uncomplicated manner, in particularly large numbers of the population in the event of an epidemic or a pandemic, as in the case of the COVID-19 pandemic, short-term half masks for the mouth and nose, which can be produced close to the users, to provide.
  • a large number of standardized working models with a contour corresponding to the inner surface contour or the outer surface contour of the base body could, for example, be made available to health authorities and stored there.
  • these working models would be made available to commercial dental laboratories / dental laboratories, and possibly also to orthopedic companies, with the respective working models being used in the deep-drawing devices or devices available there, for example in accordance with the state of the art described at the beginning so that a large number of base bodies could be produced within a very short time. Only the fastening means for mounting the base body on the head of the person would then have to be attached to these, furthermore the air filter (s) in the opening or openings of the base body be screwed in. The finished half masks could be handed over to the user at short notice via the health authorities or even via the laboratories.
  • a digital generation of the working models enables a cost-effective, precise, time-saving creation of the respective working model.
  • Deep drawing can take place in different ways, for example by applying a vacuum or by applying an overpressure.
  • the Figures 1 to 5 show a half mask 1 for the mouth and nose of a person wearing the half mask 1.
  • the half mask 1 is formed by a one-piece base body 2, two fastening means 3 connected to the base body 2, and two air filters 4 which are held in a sealing manner by the base body 2.
  • the one-piece base body 2 is designed as a flat structure.
  • the base body 2 consists of thermoplastically deformable plastic.
  • the base body 2 is in a circumferential area 5 of the facial contour 6 of the head 7 of the person, in an area of the facial contour 6 surrounding the mouth 8 and nose 9 (see FIG Figures 10 and 11 ) customized.
  • the base body 2 has connections 10, arranged on opposite sides, for the fastening means 3 connected to the base body 2, which are elastic bands which are inserted into openings in the connections 10 in the region of their ends 11 and held there. These openings are shown in the illustration of the base body 2 according to FIG Figures 6 to 9 not illustrated.
  • the respective fastening means 3 is guided around behind the head 7. One fastening means 3 engages the two connections 10 located further up in relation to the wearing position of the half mask 1, while the other fastening means 3 engages the connections 10 located further down.
  • the base body 2 also has two openings 12 within the circumferential area 5, the respective opening 12 serving to seal one of the two air filters 4 which are inserted into the base body 2 from the outside, based on the wearing situation of the half mask 1.
  • the respective air filter 4 has a projection inserted into the respective opening 12.
  • the respective air filter 4 can certainly be held in the base body 2 via a latching connection and / or a plug / rotary connection.
  • the half-mask 1 can be adjusted according to the desired through a suitable choice of the air filter 4 Filter protection can be fitted. Since the half mask 1 rests in a sealing or largely sealing manner on the facial contour 6 in the circumferential area 5 of the base body 2 under the action of the fastening means 3, the air filters 4 serve to allow air to pass through when breathing. According to the design of the respective air filter 4, the half mask 1 fulfills the function of a particle filtering half mask, in particular one of class FFP-3. In the case of the respective air filter 4, however, filter elements can also be used which are in the form of cotton wool pads, cotton fabric or nonwoven fabric, in particular consisting of polypropylene. As a result, the half mask 1 can be used as mouth and nose protection.
  • the base body 2 has a nose section 13 for covering the nose 9 of the person, two cheek sections 14 for covering cheeks 15 (see FIG Figure 10 ) of the person, a chin portion 16 for covering a chin 17 (see Figure 10 ) of the person.
  • the base body 2 also has a mouth section 18 (see FIG. 10 between the nose section 13, the cheek sections 14 and the chin section 16).
  • the main body 2 is overall transparent, so that the facial contour 6 covered by the main body 2 can be fully seen.
  • the respective opening 12 is arranged outside the mouth section 18 so that air filters 4 inserted into the openings 12 do not cover the mouth 8 and this is visible when speaking.
  • the base body 2 can additionally have a circumferentially arranged sealing element, in particular a sealing tape, preferably a silicone seal, towards the head 7 in its circumferential area 5.
  • a sealing element in particular a sealing tape, preferably a silicone seal
  • the base body 2 is thus adapted in the circumferential area 5 of the facial contour 6 of the person, in an area surrounding the mouth 8 and nose 9.
  • the air filters 4 are used to filter exhaled and / or inhaled air of the person, with the base body 2 within it circumferential area 5 has the openings 12 for receiving the air filter 4.
  • One air filter 4 could be designed in such a way that it only lets through inhaled air, while the other air filter 4 only lets through exhaled air.
  • the base body 2 is produced in such a way that a working model with a contour corresponding to the inner surface contour, thus the contour of the base body 2 facing the person, is generated.
  • a deep-drawing process at least a partial area of the plate is formed into the shape of the base body 2 from a flat, heated plate made of thermoplastically deformable plastic.
  • the base body is produced in the same way as a grinding splint, correction splint or mouthguard splint.
  • the flat plate made of thermoplastically deformable plastic is held in a holding frame and the plate is then heated, for example using a hair dryer, gas burner, etc. until the plastic has reached the softening temperature range. This holding frame is sealed against a base frame that carries the working model.
  • the openings 12 for receiving the air filters 4 and the connections 10 for the fastening means 3 are also formed.
  • the working model is generated digitally.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Zoology (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
EP20173874.7A 2020-05-11 2020-05-11 Demi-masque pour la bouche et le nez, corps de base d'un demi-masque et procédé de fabrication d'un corps de base Withdrawn EP3909648A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20173874.7A EP3909648A1 (fr) 2020-05-11 2020-05-11 Demi-masque pour la bouche et le nez, corps de base d'un demi-masque et procédé de fabrication d'un corps de base

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20173874.7A EP3909648A1 (fr) 2020-05-11 2020-05-11 Demi-masque pour la bouche et le nez, corps de base d'un demi-masque et procédé de fabrication d'un corps de base

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EP3909648A1 true EP3909648A1 (fr) 2021-11-17

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EP20173874.7A Withdrawn EP3909648A1 (fr) 2020-05-11 2020-05-11 Demi-masque pour la bouche et le nez, corps de base d'un demi-masque et procédé de fabrication d'un corps de base

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29508269U1 (de) 1995-05-18 1995-07-27 Erkodent Kopp GmbH, 72285 Pfalzgrafenweiler Tiefziehvorrichtung, insbesondere für zahntechnische Zwecke
DE19801532A1 (de) 1998-01-16 1998-09-17 Stefan Wolz Verfahren und Vorrichtung zum Tiefziehen von Folien aus Einzelstümpfe in der Zahntechnik
DE10324525A1 (de) * 2002-05-28 2004-05-06 Anna Bann Schutzmaske
DE102006011630A1 (de) * 2006-03-08 2007-09-13 Ket Kunststoff- Und Elasttechnik Gmbh Individuelle Atemmaske
US20170050057A1 (en) * 2014-04-28 2017-02-23 Scott Technologies, Inc. Filtering face respirator having optimized facial filter location
US20180078798A1 (en) * 2015-04-03 2018-03-22 Microsfere Pte. Ltd. Respiratory masks, systems and methods
DE102017209403A1 (de) 2017-06-02 2018-12-06 Sirona Dental Systems Gmbh Herstellungsverfahren für ein dentales Hilfsmittel aus einer thermoplastischen Kunststofffolie oder -platte
WO2019165555A1 (fr) * 2018-03-02 2019-09-06 Szasz Richard Devin Masque facial et procédé de conformation d'un masque facial à un visage
DE202020102050U1 (de) * 2020-04-15 2020-05-06 Bas Kunststoffverarbeitung Gmbh Gesichtsmaske mit Filtermaterial, insbesondere Mund- und Nasenschutzmaske

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29508269U1 (de) 1995-05-18 1995-07-27 Erkodent Kopp GmbH, 72285 Pfalzgrafenweiler Tiefziehvorrichtung, insbesondere für zahntechnische Zwecke
DE19801532A1 (de) 1998-01-16 1998-09-17 Stefan Wolz Verfahren und Vorrichtung zum Tiefziehen von Folien aus Einzelstümpfe in der Zahntechnik
DE10324525A1 (de) * 2002-05-28 2004-05-06 Anna Bann Schutzmaske
DE102006011630A1 (de) * 2006-03-08 2007-09-13 Ket Kunststoff- Und Elasttechnik Gmbh Individuelle Atemmaske
US20170050057A1 (en) * 2014-04-28 2017-02-23 Scott Technologies, Inc. Filtering face respirator having optimized facial filter location
US20180078798A1 (en) * 2015-04-03 2018-03-22 Microsfere Pte. Ltd. Respiratory masks, systems and methods
DE102017209403A1 (de) 2017-06-02 2018-12-06 Sirona Dental Systems Gmbh Herstellungsverfahren für ein dentales Hilfsmittel aus einer thermoplastischen Kunststofffolie oder -platte
WO2019165555A1 (fr) * 2018-03-02 2019-09-06 Szasz Richard Devin Masque facial et procédé de conformation d'un masque facial à un visage
DE202020102050U1 (de) * 2020-04-15 2020-05-06 Bas Kunststoffverarbeitung Gmbh Gesichtsmaske mit Filtermaterial, insbesondere Mund- und Nasenschutzmaske

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