EP3932493B1 - Autosauveteur à oxygène et procédé pour un autosauveteur à oxygène - Google Patents

Autosauveteur à oxygène et procédé pour un autosauveteur à oxygène Download PDF

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Publication number
EP3932493B1
EP3932493B1 EP21180546.0A EP21180546A EP3932493B1 EP 3932493 B1 EP3932493 B1 EP 3932493B1 EP 21180546 A EP21180546 A EP 21180546A EP 3932493 B1 EP3932493 B1 EP 3932493B1
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EP
European Patent Office
Prior art keywords
spring
state
breathing bag
oxygen self
rescue device
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Application number
EP21180546.0A
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German (de)
English (en)
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EP3932493A1 (fr
Inventor
Timo Tralau
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Draeger Safety AG and Co KGaA
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Draeger Safety AG and Co KGaA
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Publication of EP3932493A1 publication Critical patent/EP3932493A1/fr
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • A62B7/02—Respiratory apparatus with compressed oxygen or air

Definitions

  • the invention relates to an oxygen self-rescuer and a method for setting up a breathing bag of an oxygen self-rescuer during a transition from an unused, collapsed state of the oxygen self-rescuer to a used, expanded state of the oxygen self-rescuer.
  • an oxygen self-rescuer for example in mining. If toxic fumes suddenly appear, this serves to provide the user with oxygen for a short period of time so that they can continue to breathe in non-toxic oxygen on their way out of the toxic fumes and into an area with fresh air. Since such accidents involving escaping toxic fumes are typically rare, such an oxygen self-rescuer usually has to be worn for a long period of several years before it is used or replaced.
  • the structure of an oxygen self-rescuer is basically known, consisting of a breathing bag, a mouthpiece and a hose part that connects the mouthpiece to the breathing bag.
  • chlorate candle which releases oxygen in an exothermic reaction, this oxygen also being brought into the breathing bag.
  • the chlorate candle is activated by the user exhaling into the breathing bag.
  • a self-contained, oxygen-generating breathing apparatus which has a breathing bag. If the breathing bag is made of a flexible material, a coil spring of appropriate shape inside the resuscitator can cause the resuscitator to automatically expand when the respirator is removed from a cover before use, thereby storing the air required for the first ventilation.
  • the object of the present invention is to provide an improved oxygen self-rescuer, in particular a particularly robust and easy-to-use oxygen self-rescuer.
  • an oxygen self-rescuer with a gas cartridge, a mouthpiece, a hose connecting the gas cartridge and the mouthpiece, a breathing bag which is hydrodynamically connected to the gas cartridge and the hose, and a spring arrangement is proposed.
  • the spring assembly is disposed within the breathing bag, the spring assembly comprising at least one spring attached to the breathing bag and/or the gas cartridge, and wherein the spring assembly is in a preloaded spring state in an unused, collapsed state of the oxygen self-rescuer.
  • the spring arrangement leaves the prestressed spring state in such a way that the spring arrangement raises the breathing bag and thereby generates a negative pressure within the breathing bag, so that the negative pressure allows breathable gas into guides the breathing bag and thereby prepares it for ventilation of a user of the oxygen self-rescuer.
  • the oxygen self-rescuer according to the invention therefore advantageously enables automated mechanical erection of the breathing bag, even after the oxygen self-rescuer has been in the unused, packed state for many years. Even if the breathing bag should remain comparatively rigid in the unused, packed state due to its material properties, the spring arrangement allows a reliable transition to the used, expanded state of the oxygen self-rescuer without additional effort on the part of the user. In particular, a particularly forceful blowing into the breathing bag, as might be necessary with commercially available oxygen self-rescuers, is avoided.
  • the invention is particularly robust by using a preloaded spring arrangement, since the preloaded spring state in the metallic materials preferably used for such a spring arrangement reliably receives a spring force over many years, which, when resolved externally, ensures the transition to the extended state and the exit from the tensioned spring state.
  • the transition from the unused to the used state of the oxygen self-rescuer can be triggered externally, for example, by removing the oxygen self-rescuer from a casing, such as a bag, a bowl, a can or another such casing.
  • a casing such as a bag, a bowl, a can or another such casing.
  • the need for such manual removal can be indicated to the user, for example, by an alarm at his workplace.
  • the raising of the breathing bag by the spring arrangement provides a breathable gas volume which can be at least partially inhaled by the user of the oxygen self-rescuer when putting on the mouthpiece.
  • the gas cartridge provides an oxygen-containing gas, which is fed into the breathing bag and protects the user from having to inhale only his own exhaled air over several breaths.
  • the gas cartridge can be activated, for example, via the user's inhaled air, via manual operation or via a process correlated with the externally triggered transition in order to provide the oxygen-containing gas after activation.
  • the hydrodynamic connection between the breathing bag, gas cartridge and hose is designed in such a way that the oxygen-containing gas, which is provided by the gas cartridge in the breathing bag, can be inhaled via the mouthpiece on the hose. Furthermore, this hydrodynamic connection allows the negative pressure generated by raising the breathing bag to direct breathable gas from the environment of the oxygen self-rescuer into the breathing bag.
  • poisonous gas in the environment is not a problem here, since only a single additional breath is taken with the ambient air, which is probably not immediately enriched with poisonous gas.
  • the speed at which the breathing bag is erected by the spring assembly depends on the preload of the spring assembly in the preloaded spring state.
  • the pretension is selected such that the breathing bag stands up sufficiently straight after the externally triggered transition, for example directly after removal from a corresponding cover for the oxygen self-rescuer, in order to enable the user to breathe in.
  • Another advantage of using a spring arrangement is the reusability of the spring arrangement for erecting the breathing bag after a single use of the oxygen self-rescuer. All you have to do is provide the preloaded spring state again and, for example, through a suitable covering can be fixed in order to be able to use the spring arrangement again according to the invention. Only replacing the gas cartridge is necessary to reuse the oxygen self-rescuer.
  • the spring arrangement is shaped so flat in the pre-tensioned spring state that the pre-tensioned state supports a small internal volume of the breathing bag compared to the used, expanded state, in particular that a small pack size of the oxygen self-rescuer in the unused, packed state compared to the used extended state is supported.
  • the spring arrangement is essentially flat in the prestressed spring state and, in the extended state, is larger in at least one spatial direction than in the prestressed spring state.
  • the spring arrangement erects the breathing bag between the prestressed spring state and a relaxed spring state of the spring arrangement, wherein in the final relaxed spring state the breathing bag is not erected by the spring arrangement.
  • the breathing bag is erected so that a gas volume is available to a user for inhalation, but the erected shape of the breathing bag is no longer supported by the spring arrangement after the spring arrangement has reached its relaxed spring state.
  • the spring arrangement according to the invention has at least two mutually movable legs of the spring arrangement, the two movable legs being arranged relative to one another in the prestressed spring state in such a way that a torsion spring arranged between the two legs is in a prestressed state.
  • the legs preferably move relative to one another in such a way that the torsion spring comes into a relaxed state.
  • the use of a torsion spring with at least two legs is advantageous because such a spring arrangement is particularly simple and inexpensive to manufacture.
  • the spring assembly of this embodiment is made of metal.
  • a compression spring is used.
  • the two legs are formed at an acute angle to one another in the pre-stressed spring state, with the two legs being formed at an obtuse angle or stretched towards one another in the relaxed spring state.
  • Such a transition from an acute-angled arrangement to an obtuse-angled arrangement, in an arrangement in between, enables the breathing bag to be at least partially erected by the pressure of at least one of the two legs.
  • the spring arrangement has two opposite springs, in particular two opposite torsion springs, which form a pair of springs of the spring arrangement.
  • a spring arrangement can set up the breathing bag particularly quickly and reliably, especially after a long storage period in the pre-stressed spring state.
  • the spring arrangement has more than two torsion springs.
  • the oxygen self-rescuer particularly preferably has a spring arrangement which comprises at least two pairs of springs. This means that more spring force can be provided to raise the breathing bag compared to a pair of springs. The use of at least two pairs of springs also allows the breathing bag to be raised in different directions.
  • a torsion spring breaks, for example during storage.
  • using several pairs of springs can prevent the breathing bag from sticking to itself, for example due to adhesion forces, thereby providing a reduced internal volume.
  • Fig. 7 Such a spring arrangement, which uses several pairs of springs to raise the breathing bag particularly reliably against any adhesion forces that may be present.
  • the spring arrangement between the two springs of at least one pair of springs is arcuate, triangular, rectangular or U-shaped.
  • a structure of the spring arrangement enables a particularly robust design of the oxygen self-rescuer.
  • such a structure allows a distributed force to be applied to the breathing bag, which puts less strain on the material of the breathing bag than a point force applied by just one leg of the spring arrangement.
  • a plate can be arranged over the at least two legs of the spring arrangement and the arc shape, the triangular shape, the rectangular shape or the U shape, which raises the breathing bag during the externally triggered transition into the used expanded state.
  • the spring arrangement is preferably formed in one piece. Such a one-piece spring arrangement can be manufactured particularly easily and is particularly robust in use. In particular, there is no need for a connection between components of the spring assembly, which may develop a defect, for example break, over the years of storage.
  • the spring arrangement is formed from at least one metallic wire.
  • the spring arrangement is attached to a housing of the gas cartridge.
  • the spring arrangement is connected to the housing of the gas cartridge via a chemical or non-positive connection, in particular via a screw connection, a welded connection or an adhesive bond.
  • the negative pressure leads breathable gas into the breathing bag via the mouthpiece, the gas cartridge and/or a breathing bag valve.
  • the breathing bag valve is preferably a valve provided on the breathing bag, which enables gas exchange between the environment and the internal volume of the breathing bag in at least one direction.
  • the breathing bag valve is a valve that allows both a gas flow from the environment into the breathing bag in order to guide breathable gas into the breathing bag when the negative pressure is present, and also allows a gas flow from the breathing bag into the environment, for example Avoid excess pressure within the breathing bag.
  • a gas flow in one of the two directions is only permitted through the breathing bag valve if there is a minimum gas pressure in the respective direction.
  • the breathing bag valve is preferably a combination of a pressure relief valve and a vacuum valve.
  • the breathing bag has both an overpressure valve and a negative pressure valve.
  • the gas flow is only permitted if there is a minimum gas pressure for one possible direction.
  • the breathing bag is preferably made from a polyurethane film. This makes the breathing bag advantageously particularly robust.
  • the breathing bag is formed from a laminated fabric, in particular a laminated fabric which has threads that are electrically conductive.
  • the breathing bag is designed to be antistatic thanks to electrically conductive threads. This prevents the breathing bag from being electrically charged.
  • the invention further relates to a system consisting of the oxygen self-rescuer according to at least one of the preceding embodiments and a casing of the oxygen self-rescuer.
  • the casing of the oxygen self-rescuer is designed to provide a permanent container for the unused, packed state of the oxygen self-rescuer, in which the spring arrangement remains in the pre-stressed spring state.
  • the casing is designed to surround the pack size of the oxygen self-rescuer in the unused, packed state, whereas the oxygen self-rescuer cannot be arranged within the casing in the used, expanded state of the oxygen self-rescuer.
  • the enclosure is preferably a bag, box, can, sealed bag or the like.
  • the casing is made of a robust material that is resistant to environmental influences, such as a metal or a plastic.
  • the method according to the further aspect of the invention has the advantages of the oxygen self-rescuer according to the invention.
  • the automated exit from the preloaded spring state by the spring arrangement allows a particularly simple use of the spring arrangement, in particular a particularly simple implementation of the method according to the invention, since no further manual step is required apart from triggering, preferably manually triggering, the transition into the used extended state of the oxygen self-rescuer is necessary.
  • a final step involves reaching a final relaxed spring state of the spring arrangement, in which the breathing bag is not erected by the spring arrangement.
  • the breathing bag is erected in order to bring breathable gas into the breathing bag by means of a negative pressure generated in the process, but this breathable gas can be exhaled from the breathing bag by the user without striking the erect spring assembly breathe, since the spring arrangement is no longer able to straighten when the spring arrangement is in a relaxed state.
  • Fig. 1 shows a schematic representation of a first exemplary embodiment of an oxygen self-rescuer 100 according to the invention.
  • the oxygen self-rescuer 100 includes a gas cartridge 110, a mouthpiece 120, a hose 130 connecting the gas cartridge 110 and the mouthpiece 120, as well as a breathing bag 140 and a spring arrangement 150.
  • the gas cartridge 110 has a gas outlet 112, which leads a gas to be provided by the gas cartridge into the breathing bag 140.
  • the exact structure of the gas cartridge 110 is known to those skilled in the art and is therefore not explained in detail here.
  • the mouthpiece 120 may be a mouthpiece that is merely placed over the mouth of a user of the oxygen self-rescuer 100, or the mouthpiece 120 may not be a mouthpiece that is placed over the mouth and nose of the user of the oxygen self-rescuer 100.
  • mouthpiece 120 and hose 130 are formed together in one piece from a flexible material, such as a plastic, in particular an elastomer.
  • the mouthpiece is arranged on the hose via a suitable connection, with the hose and/or mouthpiece preferably being formed at least partially from a flexible material, such as a plastic, in particular an elastomer.
  • the breathing bag 140 is permanently attached to a housing 114 of the gas cartridge 110, preferably attached in an airtight manner, in particular glued or positively connected.
  • the attachment is arranged on the housing 114 in such a way that the gas to be provided passes through the gas outlet 112 into the breathing bag 140 and then reaches the user of the oxygen self-rescuer 100 via the hose 130 and the mouthpiece 120.
  • the breathing bag 140 is hydrodynamically connected to the gas cartridge 110 and the hose 130.
  • the spring arrangement 150 is located inside the breathing bag 140.
  • the spring arrangement 150 consists of at least a first leg 151 of the spring arrangement 150 and a second leg 152 of the spring arrangement 150, wherein the two legs 151, 152 are connected to one another via a torsion spring 153.
  • the spring arrangement comprises a compression spring.
  • the spring arrangement 150 is permanently attached to the housing 114 of the gas cartridge 110 via the first leg 151.
  • the fastening takes place via a screw connection, via a welded connection or via gluing.
  • the spring arrangement is attached alternatively or additionally to the breathing bag.
  • the spring arrangement 150 is designed such that it is in an unused, packed state of the oxygen self-rescuer, for example in Fig. 2 is shown, is in a preloaded spring state. In this case, during an externally triggered transition from the unused, packed state of the oxygen self-rescuer 100 to a used, expanded state of the oxygen self-rescuer 100, the spring arrangement 150 leaves the preloaded spring state in such a way that the spring arrangement raises the breathing bag 140 and thereby generates a negative pressure within the breathing bag 140. In Fig. 1 What is shown is exactly the state in which the breathing bag 140 is straightened up over the second leg 152 by the spring arrangement 150. This erection of the breathing bag 140 creates a negative pressure that leads breathable gas into the breathing bag 140 and thereby prepares it for ventilation of a user of the oxygen self-rescuer 100.
  • the preload is generated by the two legs 151, 152 being moved relative to one another in such a way that the torsion spring 153 is preloaded.
  • the movement towards the expanded state of the oxygen self-rescuer 100 takes place through a Movement of the two legs 151, 152 against each other such that the torsion spring 153 is finally in a relaxed state.
  • the spring arrangement consists of at least one spring.
  • two opposing torsion springs 153 are used, which lie one behind the other due to the schematic illustration on the side.
  • the possible structure of the spring arrangement 150 is, for example, by Fig. 4 or 5 shown.
  • the spring arrangement 150 is preferably formed in one piece from a metal wire.
  • the negative pressure in the breathing bag 140 which is created by raising the spring arrangement 150, is compensated for by drawing breathable gas from the environment 160 through the mouthpiece 120 and the hose 130 into the breathing bag 140.
  • the two legs 151, 152 are each at least 5 cm, in particular at least 10 cm, preferably at least 15 cm long. A certain length of the two legs 151, 152 is necessary in order to provide a gas volume within the breathing bag 140 that is sufficient for one inhalation by the user of the oxygen self-rescuer 100.
  • the user After inhaling the provided breathable gas, the user would breathe back into the breathing bag and the exhaled air would be supplemented by the oxygen-containing gas provided by the gas cartridge 110.
  • part of the gas can be released via a supplementary pressure relief valve (not shown) on the breathing bag 140 within the breathing bag, i.e. in particular part of the gas exhaled by the user, leaves the gas circuit of the oxygen self-rescuer 100 again.
  • Figures 2 and 3 show a respective schematic representation of the first exemplary embodiment of the oxygen self-rescuer 100 according to the invention packed state with wrapping 170 ( Fig. 2 ) and in the relaxed state of the spring arrangement 150 of the oxygen self-rescuer 100 ( Fig. 3 ).
  • the in Fig. 2 The packed state shown is the state that has existed for years during storage and work with the oxygen self-rescuer without a corresponding alarm situation that would indicate use of the oxygen self-rescuer.
  • Only the mouthpiece 120 and the hose 130 are preferably also arranged within the casing 170 and are only shown here in the removed state for reasons of clarity.
  • the casing 170 is shown schematically. In the exemplary embodiment shown, this is a can, in particular a can made of metal or plastic.
  • the covering is a lockable bag, a lockable box or the like.
  • the spring assembly 150 is in the preloaded spring state.
  • this pre-stressed spring state is characterized by the fact that the two legs 151, 152 are bent towards each other and accordingly point in the same direction. This results in a particularly small internal volume 142 of the breathing bag 140.
  • This small internal volume 142 enables a small pack size of the oxygen self-rescuer 100, so that it can only be arranged in the inner region 172 of the casing 170.
  • the spring arrangement 150 can no longer leave the preloaded spring state shown, since the spring force acts against the casing 170 via the breathing bag 140 and this casing 170 is strong enough to withstand this spring force to endure.
  • the length L of the oxygen self-rescuer 100 in the unused, packed state is less than 50 cm, in particular less than 30 cm, preferably less than 20 cm.
  • the width B of the oxygen self-rescuer 100 in the unused, packed state is less than 20 cm, in particular less than 15 cm, preferably less than 10cm.
  • the depth of the oxygen self-rescuer 100 in the unused, packed state which is not shown due to the perspective shown, is less than 30 cm, in particular less than 20 cm, preferably less than 16 cm.
  • the spring assembly 150 can leave the preloaded spring state.
  • This externally triggered transition is preferably realized by manually pulling the oxygen self-rescuer 100 out of the casing 170.
  • a rigid bracket which only partially surrounds the oxygen self-rescuer is used, which is removed from the oxygen self-rescuer in the event of an alarm and thereby triggers the transition from the unused, collapsed state to the used, expanded state.
  • the spring arrangement 150 leaves the preloaded spring state in that the second leg 152 moves away from the first leg 151 due to the spring force of the torsion spring 153.
  • the spring arrangement 150 leaves the prestressed state in which the two legs 151, 152 are formed at an acute angle to one another and moves over the in Fig. 1 shown state to the final relaxed state of the spring arrangement 150, which is in Fig. 3 is shown.
  • the two legs 151, 152 are at an obtuse angle or stretched relative to one another.
  • the breathing bag 140 is not erected by the spring arrangement 150 in the relaxed spring state. This is particularly advantageous since the user 180 does not have to breathe against resistance caused by the spring arrangement 150 when intuitively inhaling the gas within the breathing bag 140, as is the case for example with the in Fig. 1 illustrated state of the spring arrangement 150 could be the case.
  • Figures 4 and 5 show a respective schematic representation of a spring arrangement 400, 500 according to the invention, the spring arrangement 400 being rectangular between two springs 453, 456, 553, 556 of a pair of springs ( Fig. 4 ) and arcuate ( Fig. 5 ) is.
  • the spring assembly 400 Fig. 4 is characterized in that two torsion springs 453, 456 lie opposite each other and are connected to one another via two legs 451, 454 and a rectangular structure 457 in between. As a result, the two torsion springs 453, 456 form a pair of springs of this spring arrangement 400.
  • the two legs 452, 455 of the two torsion springs 453, 456 pointing away from the rectangular structure 457 are not connected to one another.
  • These two legs 452, 455 are in the similar spring arrangement 150 of the oxygen self-rescuer 100 Fig. 1 screwed, glued or connected in some other way to the housing of the gas cartridge. In a further exemplary embodiment, these two legs 452, 455 of the spring pair are glued, sewn or connected in some other way to the breathing bag.
  • the spring assembly 500 Fig. 5 is characterized in that, as already described for the spring arrangement 400, two torsion springs 553, 556 lie opposite one another and are connected to one another via a rectangular structure 557.
  • the only difference compared to the spring arrangement 400 is that the two further legs 452, 455 are connected to one another via a further structure, namely an arcuate structure 558.
  • the structure of the spring arrangement 500 prevents any point loading of the breathing bag and/or the gas cartridge, in particular the housing of the gas cartridge. Rather, the corresponding structure between the legs of a respective spring ensures a more uniform application of the existing spring force.
  • the two spring arrangements 400 and 500 are each formed by a metallic wire.
  • the invention can also be implemented by differently shaped spring arrangements, whereby the spring arrangement according to the invention must be able to maintain the pre-stressed spring state over a long period of time without structural damage to the spring in order to finally erect the breathing bag after the externally triggered transition to effect.
  • the spring arrangement according to the invention is at least partially formed from a metal.
  • Fig. 6 shows a schematic representation of a second embodiment of an oxygen self-rescuer 600 according to the invention.
  • the oxygen self-rescuer 600 differs from the in Fig. 1 shown oxygen self-rescuer 100 that the spring arrangement 650 is connected to the breathing bag 640. In the exemplary embodiment shown, this connection is realized via a seam. The breathing bag 640 is sewn to the second leg 652. In an exemplary embodiment, not shown, a connection between the spring arrangement and the breathing bag takes place via adhesive or another connection. In the illustrated embodiment, the spring arrangement 650 is not connected to the gas cartridge 110. In an exemplary embodiment, not shown, the spring arrangement is connected to both the breathing bag and the gas cartridge of the oxygen self-rescuer.
  • the oxygen self-rescuer 600 differs from the oxygen self-rescuer 100 in that the breathing bag 640 surrounds the entire gas cartridge 110.
  • the gas cartridge 110 is thus located in the inner volume 642 of the breathing bag 640.
  • the gas cartridge 110 Via a connection (not shown) between Breathing bag 640 and gas cartridge 110, the gas cartridge 110 is held in a predetermined position relative to the breathing bag 640.
  • the gas cartridge lies within the breathing bag without a permanent connection to the breathing bag.
  • the oxygen self-rescuer 600 differs from the oxygen self-rescuer 100 in that the breathing bag 640 has a breathing bag valve 644, which is both a pressure relief valve and a vacuum valve.
  • the vacuum valve allows the breathable gas to be guided from the environment 160 via the breathing bag valve 644 into the breathing bag 640, while the spring arrangement 650 erects the breathing bag 640 from the preloaded spring state. This creates a negative pressure in the breathing bag 640, which leads to the vacuum valve opening above a predetermined threshold value.
  • both the user's exhaled air and the oxygen-containing gas provided via the gas cartridge 110 are brought into the breathing bag 640, so that any excess pressure within the breathing bag 640 is relieved by the pressure relief valve of the breathing bag valve 644 is advantageously avoided.
  • Fig. 7 shows a schematic representation of a third embodiment of an oxygen self-rescuer 700 according to the invention.
  • the oxygen self-rescuer 700 differs from the in Fig. 1 illustrated oxygen self-rescuer 100 in that the spring arrangement 750 has two pairs of springs of opposite torsion springs 753, 759. Behind the torsion springs 753, 759 shown there is a further torsion spring in the manner shown in the Figures 4 and 5 is shown.
  • the spring arrangement 750 therefore comprises four torsion springs 753, 759. The resulting unfolding of two opposite pairs of legs enables the provision of an erect breathing bag 740 with a corresponding gas volume of breathable gas in a particularly reliable manner. This prevents the breathing bag from sticking to the spring arrangement via the two pairs of legs, thereby increasing the internal volume 742 of the breathing bag 740 would be reduced.
  • the spring arrangement 750 is attached to the gas cartridge 710, in particular to the housing 714 of the gas cartridge 710, via a connecting structure 790.
  • the connection structure 790 is glued, welded, screwed or attached in some other way to the gas cartridge 710.
  • the connection structure 790 may include, for example, a mounting rail or a system of mounting rails.
  • the oxygen self-rescuer 700 differs from the oxygen self-rescuer 100 in that the gas cartridge 710 is operated manually via a user interface 716.
  • the user interface 716 is a button.
  • such a user interface of the gas cartridge is a switch, such as a toggle switch, or a rotatable adjusting wheel.
  • the spring arrangement comprises a plurality of spring components which are fastened separately from one another in the breathing bag and/or on the breathing bag, each of which has at least one spring.
  • a further spring component can, for example, cover the remaining spring arrangement from the one in Figs. 4 and 5
  • the type shown provides additional support, for example by raising another area of the breathing bag.
  • Fig. 8 shows a flowchart of an exemplary embodiment of a method 800 according to the invention according to a further aspect of the invention.
  • the method 800 according to the invention is designed to set up a breathing bag of an oxygen self-rescuer during a transition from an unused, packed state of the oxygen self-rescuer to a used, expanded state of the oxygen self-rescuer. It has the process steps described below.
  • a first step 810 includes providing a spring assembly in a preloaded spring state of the spring assembly within the breathing bag for the unused, collapsed state of the oxygen self-rescuer.
  • a subsequent step 820 includes fixing the oxygen self-rescuer in the unused, collapsed state.
  • a next step 830 includes triggering the transition to the utilized extended state of the oxygen self-rescuer.
  • a final step 840 immediately following step 830 includes an automated exit from the preloaded spring state by the spring arrangement due to spring work of at least one spring of the spring arrangement in such a way that the spring arrangement raises the breathing bag and thereby generates a negative pressure within the breathing bag, so that the negative pressure makes the breathing bag breathable Gas leads into the breathing bag and thereby prepares it for ventilation of a user of the oxygen self-rescuer.
  • steps 810, 820, 830, 840 always follow one another in the order shown.
  • steps 810 and 820 are carried out immediately one after the other. So after providing the spring arrangement in the preloaded state, this state is fixed in the unused, packed state.
  • steps 810 and 820 can be carried out after the oxygen self-rescuer has been used in order to make it ready for use again.
  • step 830 A few years may pass between step 820 and step 830. If the oxygen self-rescuer is not used, the final steps 830 and 840 are not carried out at all after steps 810 and 820. Only in the event that the oxygen self-rescuer is used, for example due to an alarm at the workplace, such as in a mine, step 830 takes place. In order to protect the user of the oxygen self-rescuer from the danger of, for example, toxic gases in the environment, short-term ventilation of the user should be made possible by triggering the transition to the used extended state.
  • Step 840 occurs automatically immediately after step 830, since the spring arrangement is now no longer held in the pre-stressed spring state, so that it leaves this pre-stressed state and thereby erects the breathing bag.
  • breathable gas can be provided quickly and reliably in the breathing bag for the user of the oxygen self-rescuer.
  • the gas inside the breathing bag is enriched with oxygen.
  • a final step after step 840 includes reaching a final relaxed spring state of the spring arrangement, in which the breathing bag is not erected by the spring arrangement.
  • the breathing bag remains erect due to the gas introduced into the breathing bag by the negative pressure, without the spring assembly having to support this erect position of the breathing bag. Because the spring arrangement no longer raises the breathing bag, the breathing bag can be moved as part of ventilation without the spring force of the spring arrangement hindering the user's breathing.

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

Claims (12)

  1. Auto-sauveteur à oxygène (100), comprenant
    - une cartouche de gaz (110),
    - un embout buccal (120),
    - un tuyau (130) reliant la cartouche de gaz (110) et l'embout buccal (120),
    - un sac respiratoire (140) relié de manière hydrodynamique à la cartouche de gaz (110) et au tuyau (130), et
    - un agencement à ressort (150) à l'intérieur du sac respiratoire (140),
    dans lequel l'agencement à ressort (150) comprend au moins un ressort (153) qui est fixé au sac respiratoire (140) et/ou à la cartouche de gaz (110), et
    dans lequel l'agencement à ressort (150), dans un état emballé inutilisé de l'auto-sauveteur à oxygène (100), se trouve dans un état de ressort précontraint, et
    dans lequel l'agencement à ressort (150) quitte l'état de ressort précontraint lors d'une transition déclenchée extérieurement depuis l'état emballé inutilisé de l'auto-sauveteur à oxygène (100) vers un état déployé utilisé de l'auto-sauveteur à oxygène (100) de telle sorte que l'agencement à ressort (150) redresse le sac respiratoire (140) et crée ainsi une dépression à l'intérieur du sac respiratoire (140), de sorte que la dépression conduit du gaz respirable dans le sac respiratoire (140) et le prépare ainsi à la ventilation d'un utilisateur (180) de l'auto-sauveteur à oxygène (100), et
    dans lequel l'agencement à ressort 150) présente au moins deux branches (151, 152) mobiles l'une par rapport à l'autre de l'agencement à ressort (150), et
    dans lequel les deux branches mobiles (151, 152) sont disposées l'une par rapport à l'autre dans l'état de ressort précontraint de telle sorte qu'un ressort de torsion (153) agencé entre les deux branches (151, 152) est dans un état précontraint, et
    dans lequel les branches (151, 152) se déplacent l'une par rapport à l'autre lors du passage de l'état de ressort précontraint à l'état de ressort détendu de telle sorte que le ressort de torsion (153) entre dans un état détendu.
  2. Auto-sauveteur à oxygène (100) selon la revendication 1, dans lequel l'agencement à ressort dans l'état de ressort précontraint est formé plat de manière à ce que l'état précontraint mette en oeuvre un faible volume interne (142) du sac respiratoire (140) par rapport à l'état déployé utilisé, en particulier à ce qu'un faible encombrement de l'auto-sauveteur à oxygène (100) dans l'état emballé inutilisé par rapport à l'état déployé utilisé soit mis en oeuvre.
  3. Auto-sauveteur à oxygène (100) selon la revendication 1 ou 2, dans lequel l'agencement à ressort (150) redresse le sac respiratoire (140) entre l'état de ressort précontraint et un état de ressort détendu de l'agencement à ressort (150), et dans lequel, dans l'état de ressort détendu final, le sac respiratoire (140) n'est pas redressé par l'agencement à ressort (150).
  4. Auto-sauveteur à oxygène (100) selon au moins l'une des revendications précédentes, dans lequel les deux branches (151, 152) sont formées à angle aigu l'une par rapport à l'autre dans l'état de ressort précontraint, et dans lequel les deux branches (151, 152) sont formées à angle obtus ou étirées l'une par rapport à l'autre dans l'état de ressort détendu.
  5. Auto-sauveteur à oxygène (100) selon au moins l'une des revendications précédentes, dans lequel l'agencement à ressort (400) présente deux ressorts opposés (453, 456), en particulier deux ressorts de torsion opposés, qui forment une paire de ressorts de l'agencement à ressort (400).
  6. Auto-sauveteur à oxygène (700) selon la revendication 5, dans lequel l'agencement à ressort (750) présente au moins deux paires de ressorts.
  7. Auto-sauveteur à oxygène (100) selon la revendication 5 ou 6, dans lequel l'agencement à ressort (400, 500), entre les deux ressorts (453, 456, 553, 556) d'au moins une paire de ressorts, est réalisé en forme d'arc (558), en forme de triangle, en forme de rectangle (457, 557) ou en forme de U.
  8. Auto-sauveteur à oxygène (100) selon au moins l'une des revendications précédentes, dans lequel l'agencement à ressort (150) est formé d'un seul tenant.
  9. Auto-sauveteur à oxygène (100) selon au moins l'une des revendications précédentes, dans lequel l'agencement à ressort (150) est fixé à un boîtier (114) de la cartouche de gaz (110).
  10. Auto-sauveteur à oxygène (100) selon au moins l'une des revendications précédentes, dans lequel la pression négative via l'embout buccal (120), la cartouche de gaz (110) et/ou une vanne de sac respiratoire (644) conduit du gaz respirable dans le sac respiratoire (140, 640).
  11. Procédé (800) pour mettre en place le sac respiratoire (140) d'un auto-sauveteur à oxygène (100) selon l'une quelconque des revendications précédentes lors d'une transition de l'état emballé inutilisé de l'auto-sauveteur à oxygène (100) à l'état déployé utilisé de l'auto-sauveteur à oxygène (100), comprenant les étapes consistant à
    - mettre à disposition l'agencement à ressort (150) dans un état de ressort de l'agencement à ressort (150) à l'intérieur du sac respiratoire (140) pour l'état emballé inutilisé de l'auto-sauveteur à oxygène (100) ;
    - fixer l'auto-sauveteur à oxygène (100) dans l'état emballé inutilisé ;
    - déclencher la transition vers l'état déployé utilisé de l'auto-sauveteur à oxygène (100) ;
    - sortir automatiquement de l'état de ressort précontraint par l'intermédiaire de l'agencement à ressort (150) en raison d'un travail de ressort d'au moins un ressort (153) de l'agencement à ressort (150) de telle sorte que l'agencement à ressort (150) redresse le sac respiratoire (140) et crée ainsi une dépression à l'intérieur du sac respiratoire (140), de sorte que la dépression conduit du gaz respirable hors de l'environnement de l'auto-sauveteur à oxygène (100) jusque dans le sac respiratoire (140) et le prépare ainsi à la ventilation d'un utilisateur (180) de l'auto-sauveteur à oxygène (100).
  12. Procédé (800) selon la revendication 11, dans lequel une étape finale comprend l'obtention d'un état de ressort détendu final de l'agencement à ressort (150) dans lequel le sac respiratoire (140) n'est pas redressé par l'agencement à ressort (150).
EP21180546.0A 2020-06-30 2021-06-21 Autosauveteur à oxygène et procédé pour un autosauveteur à oxygène Active EP3932493B1 (fr)

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DE102020117130.7A DE102020117130A1 (de) 2020-06-30 2020-06-30 Sauerstoffselbstretter und Verfahren für einen Sauerstoffselbstretter

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EP (1) EP3932493B1 (fr)
AU (1) AU2021204441B2 (fr)
CA (1) CA3118519C (fr)
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ZA (1) ZA202104349B (fr)

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US12090276B1 (en) 2023-11-15 2024-09-17 Michael R. Minogue Highly portable gas delivery systems

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CA3118519C (fr) 2023-06-27
US20210402220A1 (en) 2021-12-30
EP3932493A1 (fr) 2022-01-05
US12102852B2 (en) 2024-10-01
ZA202104349B (en) 2022-06-29
CA3118519A1 (fr) 2021-12-30
DE102020117130A1 (de) 2021-12-30
AU2021204441A1 (en) 2022-01-20
AU2021204441B2 (en) 2022-08-25

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