Emergency respiratory device for providing processed breathing air from ambient air laden with pollutants, in particular toxic pollutants

Abstract

The invention relates to an emergency respiratory device (1) for providing processed respiratory air from ambient air (2) laden with pollutants, in particular toxic pollutants, comprising a central middle piece (4) having a nose adapter (6), the nose adapter being disposed on the outside of the middle piece (4) and the nose adapter comprising a first and a second nose connection port (10a, 10b) which can be inserted, substantially tightly with respect to flow, into the nasal openings of a human and / or the nose adapter comprising a nose mask (100) which can be placed exclusively onto the nose of a human, characterized in that, on the middle piece (4), a first and a second tubular air supply line (12a, 12b) are also provided, the first end of which is fluidically connected to the interior of the first and second nose connection ports (10a, 10b) of the nose adapter (6) or to the interior of the nose mask (100), and in that, at the second end of the first tubular air supply line (12a), a first filter module (20a) can be received and, at the second end of the second tubular air supply line (12b), a second filter module (20b) can be received, each filter module having an inlet (22a) (22b) for the inflow of polluted ambient air (2) and an outlet (24a, 24b) for the outflow of cleaned ambient air (2), the outlets being fluidically connected to the interior of the respective first and second tubular air supply lines (12a, 12b).

Description

[0001] EMERGENCY BREATHING DEVICE FOR PROVIDING TREATMENT OF BREATHING AIR FROM AMBIENT AIR CONTAMINATED WITH CONTAMINANTS, PARTICULARLY TOXIC CONTAMINANTS

[0002] The invention relates to an emergency breathing device for providing treated breathing air from ambient air contaminated with contaminants, in particular toxic contaminants, according to the preamble of claim 1.

[0003] In emergency situations, such as a fire in a residential building or a tunnel, toxic contaminants are often released, such as smoke gases and the toxic chemical substances they contain, tiny particles and fine dust, which can enter the upper respiratory tract and lungs of people at the scene of the emergency by inhaling the ambient air and, depending on the substance and concentration, can sometimes lead to life-threatening poisoning.

[0004] To prevent the risk of poisoning from inhaling ambient air contaminated with toxic contaminants, it is known in the art to use breathing masks or gas masks with appropriate filters that filter out the contaminants from the inhaled ambient air and thus keep them out of the lungs. The problem with these breathing masks or gas masks is that they generally cover the entire face, thereby severely restricting the wearer's freedom of movement and field of vision. Furthermore, due to their size, the masks are very bulky and require a comparatively large amount of storage space, which limits their use primarily to professional use in firefighting, as well as in the armed forces or chemical plants, etc., by specially trained personnel.

[0005] A further difficulty in using known breathing masks or gas masks is that acoustic communication through the mask is severely limited, as the masks completely cover the wearer's mouth and thus severely impair the propagation of sound when speaking, often altering the spoken or shouted content to the point of incomprehensibility. Accordingly, it is an object of the present invention to create an emergency breathing device that is easy to use, requires little space, and can be put on very quickly even by untrained persons in the event of a sudden emergency, such as a fire in a residential building, a motor vehicle, a tunnel, or an aircraft, etc., to enable the inhalation of filtered or treated ambient air.

[0006] This object is achieved according to the invention by an emergency breathing device having the features of claims 1 and 12.

[0007] Further features of the invention are contained in the subclaims.

[0008] According to the invention, an emergency breathing device for providing treated breathing air in the event of danger, such as a fire or the release of toxic gases or biologically active substances such as viruses and bacteria, etc., comprises a central middle piece which has a nasal adapter arranged on the outside of the middle piece, which has a first and second nasal-side connection piece which can be inserted into the nostrils of a person in a substantially flow-tight manner.Alternatively or simultaneously to the two nasal-side connection pieces, the emergency breathing device can comprise a nasal mask that can be placed exclusively on the nose of a person, which has a dome-shaped housing that is closed on the outside and made of a preferably rubber-elastic, heat-resistant material, with an interior adapted to the shape of the human nose, which, once placed on the nose, essentially encloses the bridge of the nose and the area of ​​the two nostrils in an airtight manner.

[0009] Arranged on the centerpiece are a first and second tubular air supply line, which originate at the centerpiece and are fluidly connected at their first end to the interior of the first and second nose-side connection pieces of the nasal adapter or to the interior of the nasal mask. The first and preferably also the second air supply line each carry a filter module at their second end, each having an inlet for the entry of contaminated ambient air and an outlet for the exit of purified ambient air.The outlet is fluidically connected to the interior of the respective first and second tubular air supply lines and via these to the respective nasal-side connection piece, so that the ambient air laden with the contaminants is sucked through the respective inlet into the filter of the first and preferably also second filter module, cleaned of the toxic substances therein, and sucked into the respiratory tract through the respective outlet and the first and second tubular air supply lines arranged downstream of these in the direction of flow and the respective first or second nasal-side connection piece.

[0010] The emergency breathing device according to the invention has the advantage of being very small, lightweight, and handy, and can be carried, for example, in motor vehicles, in rescue equipment, as part of a tool kit, or even in aircraft, always ready to hand. If, for example, a fire breaks out in a tunnel, a parking garage, or inside a passenger aircraft, the emergency breathing device can be put on very quickly and in just a few simple steps by inserting the nasal connection pieces into the nostrils and, if necessary, attaching a rubber-elastic retaining strap to the user's head. This provides conditioned breathing air for a certain period of time, for example, several minutes, to evacuate the danger area.If, for example, catalytic metal granules are used as filters that oxidize carbon monoxide to carbon dioxide, this opens up the possibility of converting the carbon monoxide inhaled with the smoke into carbon dioxide, making the breathing air less toxic. In the event of a fire in a tunnel, for example, the person can leave the tunnel in time without losing consciousness due to inhaling carbon monoxide, and the affected person cannot bring themselves or others to safety. The various filters, several of which can also be used in combination, are discussed in more detail below.

[0011] The device has the additional advantage that you can speak in the usual way when breathing out through your mouth, so that communication is still possible despite the device being worn, and if necessary, appropriate acoustic communication with other people at the danger point is still possible. With conventional breathing masks that completely cover the mouth and nose, this is not possible, so that generally only communication via hand signals is possible, which is also generally considerably more difficult when there is heavy smoke development. In the preferred embodiment of the invention, the central middle piece has a central chamber that is hermetically sealed to the outside and into the interior of which the first and second tubular air supply lines as well as the first and second nose-side connection pieces open.The use of a central chamber opens up the possibility of a particularly simple structure, since the central middle piece and the first and second tubular air supply lines can be designed as a single integral tubular component on which the nose-side connection pieces are arranged centrally.

[0012] In a further embodiment of the invention, the free end of the first and second nasal connection pieces have a spherical or egg-shaped thickening at the end, the shape of which is adapted to be inserted into the nasal opening of a person by expanding the adjacent tissue and temporarily fixed therein by the pressure of the tissue lying on the outside of the thickening at the end. This, if necessary, in combination with an additional sealing lamella, allows an airtight flow connection between the interior of the nasal connection pieces and the air-conducting channels in the nose to be created in a particularly simple and reliable manner.

[0013] To ensure the device can be easily adapted to different anatomical shapes of the nose and nasal openings, as well as to different head shapes, at least the nasal-side connection pieces arranged on the central middle piece, but preferably also the central middle piece and / or the first and second tubular air supply lines, are made of an elastic plastic material, in particular silicone. Alternatively, it is possible to manufacture them from a plastically reversibly deformable, preferably biocompatible, i.e., highly tolerable when in contact with human tissue, and preferably also food-safe plastic material, such as PVC, hybrid silicone, or ABS plastic, and to coat the nasal-side connection pieces with a flexible material, such as silicone, for example in the form of a lamella.The previously described components of the device are preferably formed as an integral component, preferably an injection-molded component.

[0014] The last-described embodiment offers the possibility of folding the entire emergency breathing device along a fold line running through the central middle section, preferably in such a way that the first and second tubular air supply lines are arranged side by side to save space. This advantageously allows the device according to the invention to be packaged in a space-saving and sterile manner in a plastic film for storage over an extended period of time, for example, in the glove compartment of a motor vehicle.

[0015] According to a further concept of the invention, a check valve can be arranged between the first nose-side connection piece and the first filter module and / or the second nose-side connection piece and the second filter module. This check valve determines the flow direction, prevents dead space ventilation (pendulum breathing), and prevents breathing air from flowing through the first and second air supply lines into the first and second filter modules when exhaling through the nose. The check valves can, for example, be designed as disc-shaped plates arranged on a support body provided with openings, which is inserted into the first and second air supply lines, or alternatively inserted into the outlet of the first or second filter module or placed on the outlet thereof.

[0016] In a further embodiment of the invention, it can be provided that the first and / or second tubular air supply line has a connection section, in particular a threaded section or bayonet section, at its respective second end, onto which a complementary outlet-side connection section, in particular a complementary threaded section of the first and second filter module, can be placed, in particular screwed or plugged onto using a bayonet connection, to create a gas-tight connection. This offers the advantage that a used filter module can be replaced within a very short time, even by inexperienced persons, with just a few simple steps.This also opens up the possibility of exchanging a filter module, which serves, for example, to oxidize carbon monoxide to carbon dioxide, during the manufacture of the device according to the invention for another filter module that can be used to remove pathogens, such as COVID-19 pathogens, from the inhaled ambient air. The device according to the invention can thus be flexibly adapted to a wide variety of operating conditions and hazardous situations with little effort and at low cost.

[0017] In a preferred embodiment of the invention, the first and second tubular air supply lines are arranged on opposite sides of the central middle piece, facing away from each other, and have an arcuate, curved basic shape. This basic shape can be individually adapted to the respective shape and contour of the cheeks of a human face by plastically deforming the material when using a previously mentioned plastically reversibly deformable plastic material for the air supply lines.

[0018] Alternatively, it is also possible to have the first and second tubular air supply lines originate from the central middle piece on opposite sides thereof, running upwards, and to also design them in an arc-shaped manner to adapt their shape to the contour of a human head / skull, so that in this embodiment too, a precise adjustment to the respective individual head shape can be carried out by hand through the use of a plastically deformable plastic material for the first and second air supply lines.

[0019] To enable particularly simple adaptability of the device according to the invention to different head and nose shapes and to ensure secure hold, it can further be provided that the first and second tubular air supply lines are connected by a connecting clip that can be moved along the first and second tubular air supply lines, at the level of the bridge of the nose, between the eyes, thus forming a triangular free space within which a human nose can be accommodated. The connecting clip advantageously has two circular openings that have a slightly smaller inner diameter than the outer diameter of the first and second air supply lines, which are preferably also circular in cross-section, and through which the first and second air supply lines are guided.This allows the connecting clip to be moved back and forth along the two tubular air supply lines with a certain amount of force, allowing the height of the triangular free space to be adjusted to the length and shape of the nose bridge. To increase flexibility, the base body of the connecting clip can also have a slot extending from the respective opening to the outside of the base body, so that, in simple terms, the first and second air supply lines are clamped between two elastically expandable legs and thus held in position.

[0020] In order to reliably fix the emergency breathing device according to the invention to the user's head, band-like holding means, preferably made of a rubber-elastic material, can be arranged on the central middle piece and / or on the first and second tubular air supply lines and / or on the first or second filter module. These band-like holding means are preferably made of a rubber-elastic material, so that after the nasal connection pieces are inserted into the nostrils and the band-like holding means are passed around the back of the head, the device is positively fixed to the head and / or ears of the user. This provides the advantage that the emergency breathing device according to the invention can be fixed to the body independently, without the need to additionally hold it with one hand.

[0021] Although the first and second air supply lines preferably flow into the central chamber as a shared reservoir, from where the inhaled, conditioned ambient air then enters the respective nasal connection ports, the central chamber can also be divided into two airtight individual chambers by a partition. This has the advantage of reducing the so-called dead space volume, which means that in the event of accidental exhalation through the nose, a further decreasing amount of oxygen in the exhaled air and an increasing amount of exhaled CO2 are produced, which is then re-inhaled with the next breath. The valves prevent this dead space ventilation.A further advantage of this design is that by reversing the flow direction of one of the check valves with the mouth closed, the treated ambient air is automatically inhaled through the first filter module, the first air supply line, and the first nasal connection piece, and the air is automatically exhaled through the second nasal connection piece, the second air supply line, and the second check valve, which in this case acts in the opposite flow direction and opens. This opens up the possibility of automatically inhaling treated ambient air and exhaling it with the mouth closed through the two check valves opening in opposite directions, without the user of the device having to take any further action. The direction of the breathing air flow is thus absolutely correct.This type of emergency breathing device is particularly suitable for protecting against the penetration of viruses or bacteria, which, for example, can enter the throat through droplet infection via the open mouth and from there into the body. With this design, the mouth can remain permanently closed and is not required as an exhalation passage, as is the case with the other previously described designs.

[0022] Depending on the desired application, the filter modules can contain not only an oxidation catalyst, as mentioned above by way of example, for converting carbon monoxide into carbon dioxide, as platinum-coated granules for catalysis and gold-coated titanium dioxide granules for reducing the reaction temperature, but can also, additionally or alternatively, contain an activated carbon filter and / or a detox particle filter and / or a fabric filter, in particular a fine dust filter and / or a filter for neutralizing bioactive substances, in particular viruses, or another filter. The latter can, for example, be a titanium dioxide granule or fabric coated with precious metals such as silver, gold, or platinum, which has the desired chemical reactions and a silver surface that neutralizes viruses, bacteria, or other germs and over which the inhaled ambient air flows.As a catalyst, it lowers the carbon monoxide concentration in the breathing air by catalytically converting it into carbon dioxide, thereby reducing the toxicity of the breathing air. The conversion and reduction of other harmful or toxic breathing air components can also be achieved through a specific filter composition design.

[0023] The invention is described below with reference to the drawings using preferred embodiments.

[0024] The drawings show:

[0025] Fig. 1 is a schematic spatial representation of a first embodiment of an emergency breathing device according to the invention, in which the first and second air supply lines run laterally along the cheeks of a person,

[0026] Fig. la is a schematic horizontal sectional view of the emergency breathing device of Fig. 1,

[0027] Fig. 1b is a schematic horizontal sectional view of the emergency breathing device of Fig. 1 with exemplary arrows for the air flow,

[0028] Fig. 2 is a schematic horizontal sectional view of another embodiment of the emergency breathing device according to the invention, in which the central chamber is divided by a partition wall, Fig. 3 is a schematic spatial representation of another embodiment of the emergency breathing device according to the invention, in which the first and second air supply lines are guided centrally in the vertical direction over the user's head,

[0029] Fig. 3 a is a schematic spatial front view of a human head with an emergency breathing device of Fig. 3 applied,

[0030] Fig. 3b is a schematic spatial side view of the head of Fig. 3a, and

[0031] Fig. 4 is a schematic sectional view of another embodiment of the emergency breathing device according to the invention, in which the ambient air contaminated with toxic substances is inhaled into one nostril via the first filter module, a first check valve and the first air supply line and exhaled with the mouth closed through the second nostril, the second supply line, a second check valve and an optional second filter module,

[0032] Fig. 5 shows another embodiment of the invention with a nasal mask, and

[0033] Fig.6 is a schematic partial representation of the central middle piece of a further embodiment in which the two tubular supply lines are designed as hoses closed at the ends, which are movably connected to one another by a folding hinge.

[0034] As shown in Figures 1 to 4, an emergency breathing device 1 for providing treated breathing air from ambient air 2 laden with contaminants, in particular toxic contaminants, comprises a central middle piece 4 with a nasal adapter 6 arranged on the outside of the middle piece 4, which comprises a first and second nose-side connection piece 10a, 10b that can be inserted into the nostrils of a person in a substantially flow-tight manner and / or a nasal mask 100 shown in Fig. 5 that can be placed exclusively on the nose of a person. This nasal mask can be manufactured as a thin-walled silicone membrane in order to ensure an airtight connection of the emergency breathing device during the inhalation process, even with different nose sizes and shapes. As can be seen from the illustration in Fig.1, a first and second tubular air supply line 12a, 12b is arranged on the middle piece 4, which are fluidly connected with their first end to the interior of the first and second nose-side connection pieces 10a, 10b of the nose adapter 6 or to the interior of the nose mask 100. At the second end of the first tubular air supply line 12a there is a first filter module 20a and at the second end of the second tubular air supply line 12b there is a second filter module 20b, each of which has an inlet 22a, 22b, indicated in Fig. 1b and 2, for the entry of contaminated ambient air 2 and an outlet 24a, 24b for the exit of purified ambient air 3, which is fluidly connected to the interior of the respective first and second tubular air supply lines 12a, 12b.

[0035] As can be further seen from the illustration in Fig. 1a and Fig. 1b, the central middle piece 4 preferably has a central chamber 8 which is hermetically sealed to the outside and into the interior of which the first and second tubular air supply lines 12a, 12b and the first and second nose-side connecting pieces 10a, 10b open.

[0036] The free end of the first and second nasal connection pieces 10, 10b preferably has a spherical or egg-shaped thickening 11 formed from silicone or another soft, rubber-elastic material. This thickening can be inserted into a person's nostril by expanding the adjacent tissue or by deforming the rubber-elastic material. It is then temporarily secured therein by the pressure of the tissue adjacent to the outside of the thickening 11. At the same time or alternatively, a sealing lamella 13 made of flexible material, in particular silicone, can be arranged on the first and second nasal connection pieces 10a, 10b, surrounding the latter in a flange-like manner. This sealing lamella rests against the respective edge of the nostril when air is inhaled through the nasal connection pieces 10a, 10b, thereby additionally sealing it airtight.The sealing lamella 13 is indicated by dotted lines on the nose-side connection pieces 10a, 10b of the embodiment of Fig. 3, but can be provided in all embodiments. To ensure a secure seal during the inhalation process with a wide variety of nose shapes and sizes, a nasal mask can also be used with any version of the emergency breathing device, as shown in Fig. 5 as item 100. This nasal mask can be made as a wafer-thin silicone membrane to ensure an airtight connection of the emergency breathing device during the inhalation process, even with different nose sizes and shapes.The negative pressure during the inhalation process draws this lamella into a gas-tight seal against the facial skin around the nose, ensuring that, regardless of the nose shape and size, the inhaled air 3 has safely flowed through the filter materials of the filter modules 20a and 20v, preventing contaminated air 2 from bypassing the emergency breathing device and entering the person's body. For illustrative reasons, some of the filter materials in the filter modules 20a and 20b in the various figures are not shown.

[0037] The central middle piece 4 and / or the first and second tubular air supply lines 12a, 12b and / or the nose-side connecting pieces 10a, 10b arranged on the central middle piece are preferably made of a rubber-elastic plastic material, such as silicone or elastic polyethylene, and are formed in a particularly cost-effective manner as an integral component from the same material, so that the device 1 can be folded along a fold line 30 indicated in Fig. 1 and running through the central middle piece 4 in order to reduce the space required.

[0038] Alternatively, the folding can also be achieved, as indicated in Fig. 6, by the central middle piece 4 being formed from two tubes that are each closed at their ends and form the supply lines 12a, 12b, or by comprising tubes that are separated under the nose and are preferably connected by a robust but highly flexible lamella 50, in particular a silicone lamella 50. This forms a folding hinge, which enables space-saving storage if the two tubes are guided parallel to one another along the fold line 30, as indicated in dotted lines in Fig. 6. This variant can also be realized, for example, by the fact that in the case of the device shown in Fig.2 or 4, the middle piece 4 between the nose-side connecting pieces 10a, 10b is severed at the level of the partition wall 40 along the partition wall up to near the body-side end, and a previously described, approximately 1 cm high silicone lamella is left on the body side as a connection between the right and left tubes 12a, 12b.

[0039] The partition wall 40, which in this case is preferably widened and terminates vertically on the body side, can be made wider for this purpose and, on the side closest to the body, have a straight rear wall running essentially parallel to the two nose-side connecting pieces 10a, 10, which forms the flexible lamella 50. This results in an emergency breathing device 1 that is dimensionally stable during breathing, but can nevertheless be folded together in a space-saving manner thanks to the flexible lamella 50 acting as a folding hinge.

[0040] As can be seen from the sectional views of Figs. 1a and 1b, a check valve 26a, 26b is arranged between the first nose-side connection piece 10a, 10b and the first filter module 20a and / or the second nose-side connection piece 10b and the second filter module 20b. This check valve prevents breathing air from flowing through the first and second air supply lines 12a, 12b into the first and second filter modules 20a, 20b in order to avoid dead space ventilation when exhaling through the nose. The first and second check valves are designed, for example, as thin plates or as a membrane 27, which are supported on a support element 28 provided with openings, as indicated in Figs. 1a and 2.

[0041] The first and second tubular air supply lines 12a, 12b have at their respective second ends a connecting section 29, in particular a threaded section, onto which a complementary outlet-side connecting section 29 4, in particular a complementary threaded section of the first and second filter module 20a, 20b, can be placed, in particular screwed on or plugged on as a bayonet closure, to create a gas-tight connection.

[0042] As can be seen from the illustration in Figures 1 and 2, the first and second tubular air supply lines 12a, 12b in the embodiment shown there are attached to the central middle piece 4 on opposite sides thereof, pointing away from each other, or are formed with it, and have an arc-shaped shape that corresponds to the contour of the cheeks of a human face. In the alternative embodiment of the invention shown in Figures 3, 3a and 3b, in contrast, the first and second tubular air supply lines 12a, 12b originate on opposite sides of the central middle piece 4, run essentially upwards below the nose, rejoin above the nose, and have an arc-shaped course that corresponds to the contour of the top of a human head.

[0043] In order to be able to adapt the course of the tubular air supply lines more easily and permanently to the individual shape of the head after the device 1 has been put on, the supply lines 12a and 12b can be made of a plastically deformable material or, in the case of rubber-elastic lines, can be reinforced with such a material at least in sections. As can also be seen from Figures 3, 3a and 3b, in the embodiment shown there, with first and second tubular supply lines 12a, 12b guided centrally and essentially parallel over the head, the first and second tubular air supply lines 12a, 12b can be connected by a connecting clip 34 that can be moved along the same, forming a triangular free space 36 within which a human nose can be accommodated.

[0044] In order to additionally secure the device 1 against slipping on the head after it has been put on, band-like holding means 38 are preferably accommodated on the central middle piece 4 and / or on the first and second tubular air supply lines 12a, 12b and / or also on the first or second filter module 20a, 20b, which holding means 38 consist in particular at least partially of a rubber-elastic material and can be designed similarly to an elastic band covered with textile.

[0045] In the further embodiment shown in Fig. 2, it can further be provided that the central chamber 8 is divided by a partition wall 40 into two airtight, unspecified individual chambers.

[0046] The partition wall 40 opens up the possibility of designing the emergency breathing device according to the invention as shown in Fig. 4 in such a way that ambient air 2 laden with contaminants, in particular toxic contaminants, is inhaled as described above through the first filter module 20a, the first check valve 26a and the first tubular air supply line 12a as well as the first nose-side connection piece 10a and exhaled with the mouth closed through the second nose-side connection piece 10b of the nose adapter 6 and the second tubular air supply line 12b as well as a second check valve 126b. For this purpose, the second check valve 126, unlike the embodiment shown in Fig. 2, is a check valve opening in the exhalation direction, as indicated by the arrows in Fig. 4, which are not designated in more detail and which indicate the direction of air flow.A second filter module is not absolutely necessary in this embodiment, but can be plugged or screwed onto the end of the second tubular air supply line 12b as a reserve module, which can be used if necessary by plugging it onto the first air supply line to extend the service life of the filter modules. The filters used in the filter modules 20a and 20b are only indicated schematically and can comprise an activated carbon filter and / or a detox particle filter and / or a fabric filter, in particular a fine dust filter and / or a filter for neutralizing bioactive substances, in particular viruses, preferably a titanium dioxide granulate or fabric coated with silver, gold and / or platinum and / or an oxidation catalyst for converting carbon monoxide into carbon dioxide, in particular a titanium dioxide granulate coated with gold and / or platinum, wherein such filter materials are known in the prior art.

[0047] List of reference symbols

[0048] 5 1 Emergency breathing device

[0049] 2 Ambient air contaminated with contaminants

[0050] 3 purified air

[0051] 10

[0052] 4 central middle piece

[0053] 6 nose adapters

[0054] 15 8 central chamber

[0055] 10a first nose-side connection piece

[0056] 10b second nose-side connection piece

[0057] 20

[0058] 11 end thickening

[0059] 12a first tubular air supply line

[0060] 25 12b second tubular air supply line

[0061] 13 Sealing lamella made of flexible material

[0062] 14a first end-side spherical thickening

[0063] 30

[0064] 14b second end-side spherical thickening

[0065] 20a first filter module

[0066] 35 20b second filter module

[0067] 22a Inlet of the first filter module

[0068] 22b Inlet of the second filter module

[0069] 40

[0070] 24a Outlet of the first filter module

[0071] 24b Outlet of the second filter module

[0072] 45 26a first check valve

[0073] 26b second check valve

[0074] 27 platelets or membrane

[0075] 50 28 Support element

[0076] 29 connecting section

[0077] 29' complementary connecting section

[0078] 30 fold line

[0079] 34 Connecting clip

[0080] 36 triangular open space

[0081] 38 ligamentous or benign retaining devices

[0082] 40 Partition wall in central chamber

[0083] 50 flexible slats of the folding hinge

[0084] 100 nose masks

[0085] 126b Check valve closing in the exhalation direction in an alternative embodiment

Claims

Claims 1. Emergency breathing device (1) for providing treated breathing air from ambient air (2) contaminated with contaminants, in particular toxic contaminants, comprising a central middle piece (4) with a nasal adapter (6) arranged on the outside of the middle piece (4), which comprises a first and second nasal-side connecting piece (10a, 10b) that can be inserted into the nostrils of a person in a substantially flow-tight manner and / or a nasal mask (100) that can be placed exclusively on the nose of a person, characterized in that a first and second tubular air supply line (12a, 12b) is further arranged on the middle piece (4), which is fluidically connected at its first end to the interior of the first and second nasal-side connecting piece (10a, 10b) of the nasal adapter (6) and / or to the interior of the nasal mask (100),and that a first filter module (20a) can be accommodated at the second end of the first tubular air supply line (12a) and a second filter module (20b) can be accommodated at the second end of the second tubular air supply line (12b), each of which has an inlet (22a) (22b) for the entry of contaminated ambient air (2) and an outlet (24a, 24b) for the exit of purified ambient air (2), which is fluidly connected to the interior of the respective first and second tubular air supply lines (12a, 12b).

2. Emergency breathing device according to claim 1, characterized in that the central middle piece 4 contains a central chamber (8) which is hermetically sealed to the outside and into the interior of which the first and second tubular air supply lines (12a, 12b) and the first and second nose-side connecting pieces open.

3. Emergency breathing device according to claim 1 or 2, characterized in that the free end of the first and second nasal-side connecting pieces (10a, 10b) has a spherical or egg-shaped thickening (11) at the end, the shape of which is adapted to be inserted into the nostril of a person by expanding the adjacent tissue and to be temporarily fixed therein by the pressure of the tissue lying on the outside of the thickening (11), and / or that a sealing lamella (13) made of flexible material is arranged on the first and / or second nasal-side connecting pieces (10a, 10b) and encloses it in a flange-like manner, and / or the nasal mask (100) consists of a thin-walled, flexible material, in particular silicone, which is designed to adhere to the skin of a human face due to the effect of negative pressure during inhalation.

4. Emergency breathing device according to one of the preceding claims, characterized in that the central middle piece (4) and / or the first and second tubular air supply lines (12a, 12b) and / or the nose-side connecting pieces (10a, 10b) arranged on the central middle piece are formed from an elastic plastic material, in particular silicone, and / or a plastically deformable plastic material, preferably as an integral component.

5. Emergency breathing device according to one of the preceding claims, characterized in that it is foldable along a folding line (30) running through the central middle piece (4), in particular by a flexible lamella (50) acting as a folding hinge, which connects the ends of the two tubular supply lines (12a, 12b) to one another, such that the first and second tubular air supply lines (12a, 12b) can be arranged substantially side by side.

6. Emergency breathing device according to one of the preceding claims, characterized in that a check valve (26a, 26b) is arranged between the first nose-side connection piece (10a, 10b) and the first filter module (20a) and / or the second nose-side connection piece (10b) and the second filter module (20b), which check valve, in order to avoid dead space ventilation when exhaling through the nose, Inflow of breathing air through the first and second air supply lines (12a, 12b) into the first and second filter modules (20a, 20b) is prevented.

7. Emergency breathing device according to one of the preceding claims, characterized in that the first and / or second tubular air supply line (12a, 12b) has at its respective second end a connection section, in particular a threaded section (29), onto which a complementary outlet-side connection section, in particular a complementary threaded section (29') of the first and second filter module (20a, 20b), can be placed, in particular screwed or plugged, to create a gas-tight connection.

8. Emergency breathing device according to one of the preceding claims, characterized in that the first and second tubular air supply lines (12a, 12b) originate on opposite sides of the central middle piece (4) pointing away from one another and are curved or bendable in an arc shape to adapt their shape to the contour of the cheeks of a human face, and / or that the first and second tubular air supply lines (12a, 12b) originate on opposite sides of the central middle piece (4) extending substantially in an upward direction and are curved or bendable in an arc shape to adapt their shape to the contour of a human head.

9. Emergency breathing device according to claim 8, characterized in that the first and second tubular air supply lines (12a, 12b) are connected by a connecting clip (34) which is displaceable along the first and second tubular air supply lines (12a, 12b) to form a triangular free space (36) within which a human nose can be accommodated.

10. Emergency breathing device according to one of the preceding claims, characterized in that on the central middle piece (4) and / or on the first and second tubular air supply line (12a, 12b) and / or on the first or second filter module (20a, 20b) band-like, preferably rubber-elastic holding means can be fastened, which are designed to fix the emergency breathing device (1) to the head and / or ears of a person.

11. Emergency breathing device according to claim 2, characterized in that the central chamber (8) is divided into two airtight individual chambers by a partition wall (40).

12. Emergency breathing device (1) for providing conditioned breathing air from ambient air (2) loaded with contaminants, in particular toxic contaminants, comprising a central middle piece (4) with a nasal adapter (6) arranged on the outside of the middle piece (4), which comprises a first and second nasal-side connection piece (10a, 10b) that can be inserted into the nostrils of a person in a substantially flow-tight manner, characterized in that a first tubular air supply line (12a) is further arranged on the middle piece (4), which is fluidically connected with its first end exclusively to the interior of the first nasal-side connection piece (10a, 10b) of the nasal adapter (6),and that at the second end of the first tubular air supply line (12a) there is provided a first filter module (20a) with an inlet (22a) for the entry of contaminated ambient air (2) and an outlet (24a) connected to the first tubular air supply line and the first connecting piece (10a) via a first check valve (26a) for the exit of purified ambient air (2) from the first filter module (20a) into the first air supply line (12a), and that the second tubular air supply line (12b) is fluidly connected with its first end exclusively to the interior of the second nose-side connecting piece (10b), and that at the second end of the second tubular air supply line (12b) there is provided a second check valve (126b) closing in the opposite direction to the second nose-side connecting piece (10b) and preferably preferably a second filter module (120b) is arranged,through which exhaled carbon dioxide-containing air can flow out through the second nasal connection piece (10b).

13. Emergency breathing device according to one of the preceding claims, characterized in that the first and second filter module (20a, 20b) contain an activated carbon filter and / or a detox particle filter and / or a fabric filter, in particular a fine dust filter and / or a filter for neutralizing bioactive substances, in particular viruses, preferably a silver-coated titanium dioxide granulate or fabric and / or an oxidation catalyst for converting carbon monoxide into carbon dioxide, in particular a gold and / or platinum-coated titanium dioxide granulate.

Images