CN114681728A

CN114681728A - Respirator, breathing air bag and use method of respirator

Info

Publication number: CN114681728A
Application number: CN202011630253.9A
Authority: CN
Inventors: 孙震宇; 胡咏梅; 刘杰
Original assignee: Draeger Safety Equipment China Co ltd
Current assignee: Draeger Safety Equipment China Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-07-01

Abstract

The present application relates to a respirator, a breathing bag, and a method of using a respirator. The respirator (1) comprises: a top plate (10) and a bottom plate (60) fixed relative to each other and spaced apart by a predetermined distance; the upper end of the spring assembly (20) is connected below the top plate; an airbag baffle (30) connected to a lower end of the spring assembly; a breathing bag (40) containing a gas for breathing therein, the breathing bag being variable between an inflated state and a collapsed state under the action of the amount of gas it contains and the force exerted by the spring assembly; a gas distribution valve (50) mounted on the floor and located in a recess (402) of the first wall (401); in the collapsed state of the breathing bag, the second wall abuts against the inside of the recess, deforming the recess in a direction towards the gas distribution valve, thereby contacting and opening the gas distribution valve. According to the application, the respirator can realize automatic inflation, and the distributing valve is wholly positioned outside the breathing air bag and the air passage, so that the assembly and the maintenance are convenient.

Description

Respirator, breathing air bag and use method of respirator

Technical Field

The application relates to the technical field of respirators, in particular to a respirator, a breathing air bag and a use method of the respirator.

Background

The respirator is a device for assisting breathing by using an additional gas source, and is widely applied to scenes such as fire fighting, chemical engineering, ships, petroleum, smelting, warehouses, laboratories, mines and the like, or used for assisting persons with insufficient breathing capacity to breathe.

CN207306953U discloses a cardiovascular disease treatment artificial respirator, including respirator backup pad and respirator main part, the position department at four angles of respirator backup pad lower extreme all installs universal removal wheel, universal removal wheel is by removing the wheel mounting, remove the wheel and rotate the piece, remove wheel main part and remove wheel braking plate and constitute, two jar stoppers are installed to respirator backup pad upper end one side, the oxygen jar is installed to jar stopper top, the oxygen jar valve is installed to the oxygen jar upper end, jar interface valve is installed to oxygen jar valve one end, the respirator main part comprises respirator axis of rotation, back check valve, rear mounting, breathing bag, preceding mounting, preceding check valve, breathing mask axis of rotation, breathing mask and replacement formula rubber pad, the rear mounting is installed to the breathing bag upper end.

CN202526533U relates to a lung function rehabilitation instrument, which comprises a working host, a gas connecting device and a compression air bag; the working host comprises a compression air pump, a pressure air storage device, a distribution air valve and an output air connecting device; the working main machine is connected with the compression air bag through a gas connecting device.

CN109966606A relates to a respiratory therapy system with two respiratory therapy devices that can be operated individually and independently of each other. The respiratory therapy device has a control device and a device assembly that can be actuated by means of the control device and is used to provide device functions. In this case, a coupling device is provided for establishing an operative connection between the two respiratory therapy devices. The coupling device is suitable and designed for actuating the control device of the two respiratory therapeutic devices while the functional connection is established. By means of the coupling device, the device components of one respiratory therapy device can be functionally expanded and/or replaced by the device components of another respiratory therapy device.

In the prior art cyclic respiratory protection devices including the above documents, the air distribution valve (automatic air supply device) is placed or semi-placed inside the respiratory air bag, and is mostly inserted inside the air bag, and the lever of the air distribution valve inside the respiratory air bag is pressed and touched by the air bag baffle plate to open the air distribution valve; further alternatively, the gas distribution valve requires an additional control structure and cannot automatically complete the inflation process. This requires the breathing bag to have an increased fit with the air distribution valve. And the gas distribution valve can be contacted with the gas in the air bag, so that the requirement of cleaning is increased.

The prior art also discloses respirators in which a protective cuff is added to the breathing bag to separate the gas distribution valve from the gas in the bag. However, the breathing bag of the respirator is therefore more complex and increases cost.

Accordingly, there is a need for a respirator that is low in cost and does not require high cleanliness for the breathing bag and the gas distribution valve, and there is also a need for a respirator that can achieve self-inflation only through the mating structure between the breathing bag and the gas distribution valve.

Disclosure of Invention

The technical problems in the prior art can be solved by the respirator, the breathing air bag and the use method of the respirator. The application provides a respirator with low cost and without high cleaning requirements on a breathing air bag and an air distribution valve, and also provides a respirator which can realize automatic inflation only through a matching structure between the breathing air bag and the air distribution valve.

Specifically, according to one aspect of the present application, there is provided a respirator comprising: a top plate and a bottom plate fixed relative to each other and spaced apart from each other by a predetermined distance; a spring assembly having an upper end and a lower end, having a compressed state and an extended state, the upper end of the spring assembly being connected below the top plate; an airbag baffle connected to a lower end of the spring assembly; a breathing bag containing gas for breathing therein, the breathing bag being disposed between the bag baffle and the base plate, having opposing first and second walls, the first wall facing the base plate and the second wall facing the bag baffle, the first wall being provided with a deformable recess, the bag baffle being arranged to be able to bear against the second wall and transfer the force exerted by the spring assembly to the breathing bag, the breathing bag being able to change between an inflated state and a collapsed state under the influence of the amount of gas contained therein and the force exerted by the spring assembly; a gas distribution valve mounted on the floor and located in the recess of the first wall, the gas distribution valve having an inlet connected to a source of gas and an outlet connected to the resuscitation bag, the source of gas being in fluid communication with the resuscitation bag when the gas distribution valve is open, thereby inflating the resuscitation bag; wherein in the inflated state of the resuscitation bag the first wall and the second wall are at a maximum distance from each other, in the collapsed state of the resuscitation bag the first wall and the second wall are at a minimum distance from each other, and under the action of the bag flap the second wall abuts against the inside of the recess deforming the recess in a direction towards the gas distribution valve, thereby contacting and opening the gas distribution valve.

Further, the second wall is provided with a deformable convex part matched with the concave part in shape, the air bag baffle plate is arranged to abut against the convex part and transmit the force applied by the spring assembly to the breathing air bag, the concave part and the convex part can be nested together, and under the action of the air bag baffle plate, the convex part and the concave part deform in the direction towards the air distribution valve so as to contact and open the air distribution valve.

Further, the gasbag still includes the gasbag lateral wall, the gasbag lateral wall is including the first section that is located the lower part and the second section that is located upper portion, first section is cylindricly, the second section is the round platform form of upwards convergent the gasbag is in when collapsing the state, the second section is folded the inboard of first section.

Further, the airbag side wall further comprises an intermediate connecting section, wherein the intermediate connecting section is located between the first section and the second section and extends inwards from the upper end of the first section to form a circular arc shape.

Further, the spring assembly includes a plurality of positive pressure springs evenly distributed between the top plate and the airbag bezel.

Further, the gas distribution valve is configured to close upon loss of contact with the recess.

Further, the gas distribution valve is configured to: automatically closing during the transition of the resuscitation bag toward its inflated state after a predetermined time of opening; or automatically shut off when the inflated state of the resuscitation bag is reached.

Further, the concave portion and the convex portion are located at the center of the first wall and the second wall, respectively.

Further, the cross section of the concave part and/or the convex part is circular arc.

With the respirator according to the present application, the gas distribution valve can be disengaged from the breathing bag by means of the new breathing bag structure. And a new breathing air bag structure is adopted, so that the process complexity is reduced, and the cost is reduced. The external separated structure of the breathing air bag and the air distribution valve reduces the maintenance operation steps and does not need to pull out the air distribution valve and insert the air distribution valve into the breathing air bag. Therefore, the respirator is low in cost and does not need to have high cleaning requirements on the breathing air bag and the air distribution valve, and the respirator capable of achieving automatic inflation only through the matching structure between the breathing air bag and the air distribution valve is provided.

According to another aspect of the present application, there is provided a breathing bag containing a gas for breathing having opposed first and second walls, the first wall being provided with a deformable recess.

Further, the second wall is provided with a deformable convex part matched with the concave part in shape.

Adopt the structure according to the breathing airbag of this application, reduced the manufacturing degree of difficulty of breathing airbag to improve the life-span of breathing airbag.

According to a further aspect of the present application, there is provided a method of use of the respirator described above, the method comprising: supplying gas to a user using the breathing airbag charged with gas; the recess triggers opening of the gas distribution valve when the resuscitation bag moves to its collapsed state, thereby inflating the resuscitation bag from the gas source; when the air distribution valve is inflated to be closed after losing contact with the concave part, the air distribution valve is closed; and reusing the breathing airbag to supply gas to the user.

By means of the respirator using method, automatic circulation breathing can be achieved more stably and reliably.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:

FIG. 1 is a schematic view of a respirator in use;

FIG. 2 is a simplified schematic illustration of a respirator according to one embodiment of the present application;

FIG. 3 is a simplified schematic view of a respirator according to another embodiment of the present application;

FIG. 4 is a simplified schematic view of the respirator of FIG. 3 in a collapsed state; and

FIG. 5 is a partial schematic bottom view of a gas distribution valve of a respirator according to one embodiment of the present application;

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

FIG. 1 is a schematic view of a respirator showing the use of the respirator and its structure such as a breathing bag and a gas distribution valve as described herein. Wherein the breathing air bag, the carbon dioxide absorption tank, the cooling tank and the human body form a breathing loop.

When exhaling, the body breathes out gases including carbon dioxide and first passes through the carbon dioxide absorption canister. During this process carbon dioxide is absorbed and then enters the breathing gas capsule. The breathing air bag is in an inflated state. When inhaling, the human body inhales the gas (without carbon dioxide) in the air bag, and the gas is cooled by the cooling tank and then is inhaled into the human body. At the moment, the breathing air bag is in a low-air state or even in a short-air state.

The breathing air bag is in a contraction state under the state of short breath and the state of short breath. But the difference is that when the air is in a low-air state, the air bag baffle does not touch the bottom plate, and the air distribution valve is not opened; in the air-out state, the air bag baffle touches the bottom plate so as to trigger the air distribution valve to open.

The oxygen consumed during respiration can be supplemented by "quantitative oxygen supply" as shown in fig. 1, and the gas distribution valve is used for automatic supplement when the gas quantity is insufficient. Without limitation, the gas distribution valve may also be used for oxygen respirators that are supplied on demand, and the gas is supplied directly only through the gas distribution valve (without quantitative oxygen supply) as needed.

Referring to fig. 2-4, the working principle of the respirator of the present application will be described in detail below. FIG. 2 is a simplified schematic view of a respirator according to one embodiment of the present application.

Fig. 2 shows a respirator 1 comprising: a top plate 10 and a bottom plate 60 fixed relatively, spaced apart by a predetermined distance; a spring assembly 20 having upper and lower ends, having a compressed state and an extended state, the upper end of the spring assembly 20 being connected below the top plate 10; and an air bag shield 30 connected to a lower end of the spring assembly 20.

The respirator 1 further comprises: a breathing bag 40 in which a gas for breathing is contained, the breathing bag 40 being arranged between the bag baffle 30 and the base plate 60, having opposing first and

second walls

401, 403, the first wall 401 facing the base plate 60 and the second wall 403 facing the bag baffle 30, the first wall 401 being provided with a deformable recess 402, the bag baffle 30 being arranged to be able to abut against the second wall 403 and to transmit the force exerted by the spring assembly 20 to the breathing bag 40, the breathing bag 40 being able to change between an inflated state and a collapsed state under the influence of the amount of gas contained therein and the force exerted by the spring assembly 20.

The respirator 1 further comprises: a gas distribution valve 50 mounted on the floor 60 and located in the recess 402 of the first wall 401, the gas distribution valve 50 having an inlet 501 connected to a source of gas and an outlet 502 connected to the breathing bladder 40, the source of gas being in fluid communication with the breathing bladder 40 when the gas distribution valve 50 is open, thereby inflating the breathing bladder 40.

In the inflated state of the resuscitation bag 40, the first wall 401 and the second wall 403 are at a maximum distance, in the collapsed state of the resuscitation bag 40, the first wall 401 and the second wall 403 are at a minimum distance, and under the action of the bag baffle 30, the second wall 403 abuts against the inside of the recess 402, deforming the recess 402 in a direction towards the gas distribution valve 50, thereby contacting and opening the gas distribution valve 50.

Due to the novel push-button air distribution valve structure, the air bag baffle 30 above the breathing air bag 40 is convenient to trigger and close the air distribution valve 50. The overall configuration of the breathing bladder 40 and externally disposed gas distribution valve 50 avoids direct contact of the exterior of the gas distribution valve 50 with the breathing gas.

Reference is next made to fig. 3. FIG. 3 is a simplified schematic view of a respirator according to another embodiment of the present application.

In this embodiment, the second wall 403 is provided with a deformable projection 404 matching the shape of the recess 402, and the airbag barrier 30 is arranged to be able to abut against the projection 404 and transfer the force exerted by the spring assembly 20 to the resuscitation bag 40.

Referring to fig. 4, fig. 4 is a simplified schematic view of the respirator of fig. 3 in a collapsed state. The recess 402 and the protrusion 404 can be nested together, and under the action of the airbag baffle 30, the protrusion 404 and the recess 402 deform in a direction toward the gas distribution valve 50, thereby contacting and opening the gas distribution valve 50.

Due to the novel structure of the breathing airbag, the manufacturing difficulty of the breathing airbag is reduced, and the service life of the breathing airbag is prolonged.

The resuscitation bag 40 also includes a bag sidewall that includes a first section at a lower portion and a second section at an upper portion. Referring to fig. 2 and 3, the first section is cylindrical, the second section is tapered upward, and the second section is folded inside the first section when the breathing bag is in the collapsed state.

The airbag side wall further comprises an intermediate connecting section which is positioned between the first section and the second section and extends inwards from the upper end of the first section to form a circular arc shape.

The spring assembly 20 includes a plurality of positive pressure springs uniformly distributed between the top plate 10 and the airbag baffle 30. For example and without limitation, the spring assembly 20 includes two positive pressure springs 201 and 202.

The gas distribution valve 50 may be configured to close after losing contact with the recess 402. Therefore, it is possible to replenish the air immediately after heavy breathing, in which the inspiratory volume is large, and slowly in the case of a relatively quick transition to light breathing after heavy breathing (the heavy breathing breathes a large amount of gas that is not consumed and returns to the breathing bag 40).

Optionally, the gas distribution valve 50 may also be configured to: automatically closing during the transition of the resuscitation bag 40 toward its inflated state after a predetermined time of opening; or automatically close upon reaching the inflated state of the resuscitation bag 40. This can be achieved by providing the gas distribution valve 50 with a delay valve function, thus enabling a sufficient, or quantitative, supply of gas.

Preferably, the concave portion 402 and the convex portion 404 may be located at the center of the first wall 401 and the second wall 403, respectively.

Preferably, the cross-section of the concave portion 402 and/or the convex portion 404 is circular in shape for better matching of the concave portion 402 and the convex portion 404.

The present application also provides a breathing bag 40, the breathing bag 40 containing a gas for breathing, having opposing first 401 and second 403 walls, the first wall 401 having a deformable recess 402 provided therein. The gas distribution valve 50 can be received within the recess 402 and can exit the gas distribution valve 50 when the resuscitation bag 40 is in the collapsed state.

Preferably, the second wall 403 is provided with a deformable protrusion 404 matching the shape of the recess 402.

The present application also provides a method of use of a respirator 1, the method comprising: s1 supplying gas to the user using the gas-filled resuscitation bag 40; s2 when the resuscitation bag 40 moves to its collapsed state, the recess 402 triggers opening of the gas distribution valve 50, thereby inflating the resuscitation bag 40 from the gas source; s3 when the valve 50 is closed after losing contact with the concave part 402, the valve 50 is closed; and S4 re-using the resuscitation bag 40 to supply gas to the user.

Therefore, it is possible to replenish the air immediately after a heavy breath with a large inspiratory volume, and slowly in the case of a relatively quick transition to a light breath after a heavy breath (the heavy breath does not completely consume the large amount of inhaled gas and returns to the breathing bag 40). I.e. supplied as needed.

Further, step S3 is replaced with step S3' in the above method. Step S3' is: when the airbag 40 is inflated to its expanded state, the gas distribution valve 50 is closed. Therefore, the method can realize quantitative air supplement.

From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:

with the respirator according to the present application, the gas distribution valve can be disengaged from the breathing bag by means of the new breathing bag structure. And a new breathing air bag structure is adopted, so that the process complexity is reduced, and the cost is reduced. The external separated structure of the breathing air bag and the air distribution valve reduces the maintenance operation steps and does not need to pull out the air distribution valve and insert the air distribution valve into the breathing air bag. And therefore, the present application provides a respirator that is low in cost and does not require high cleanliness for the breathing bag and the air distribution valve, and also provides a respirator that can achieve automatic inflation only through a fitting structure between the breathing bag and the air distribution valve.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A respirator (1) comprising:

a relatively fixed top plate (10) and bottom plate (60) spaced a predetermined distance apart;

a spring assembly (20) having an upper end and a lower end, having a compressed state and an extended state, the upper end of the spring assembly (20) being connected below the top plate (10);

an airbag baffle (30) connected to a lower end of the spring assembly (20);

a breathing bag (40) containing gas for breathing therein, the breathing bag (40) being disposed between the bag baffle (30) and the base plate (60), having first and second opposing walls (401, 403), the first wall (401) facing the base plate (60), the second wall (403) facing the bag baffle (30), the first wall (401) being provided with a deformable recess (402), the bag baffle (30) being disposed so as to be able to bear against the second wall (403) and transmit the force exerted by the spring assembly (20) to the breathing bag (40), the breathing bag (40) being able to change between an inflated state and a collapsed state under the effect of the amount of gas it contains and the force exerted by the spring assembly (20);

a gas distribution valve (50) mounted on the floor (60) and located in the recess (402) of the first wall (401), the gas distribution valve (50) having an inlet (501) connected to a source of gas in fluid communication with the breathing bladder (40) when the gas distribution valve (50) is open, thereby inflating the breathing bladder (40), and an outlet (502) connected to the breathing bladder (40);

wherein, in the inflated state of the breathing balloon (40), the first wall (401) and the second wall (403) are at a maximum distance, in the collapsed state of the breathing balloon (40), the first wall (401) and the second wall (403) are at a minimum distance, and, under the action of the balloon flap (30), the second wall (403) abuts against the inside of the recess (402), deforming the recess (402) in a direction towards the gas distribution valve (50), thereby contacting and opening the gas distribution valve (50).

2. Respirator (1) according to claim 1,

the second wall (403) is provided with a deformable convex part (404) matched with the shape of the concave part (402), the air bag baffle plate (30) is arranged to abut against the convex part (404) and transmit the force applied by the spring assembly (20) to the breathing air bag (40), the concave part (402) and the convex part (404) can be nested together, and under the action of the air bag baffle plate (30), the convex part (404) and the concave part (402) deform along the direction towards the air distribution valve (50) so as to contact and open the air distribution valve (50).

3. The respirator (1) of claim 1, wherein the breathing bag (40) further comprises a bag side wall comprising a first lower section that is cylindrical and a second upper section that is frustoconical and that tapers upwardly, the second section being folded inside the first section when the breathing bag is in the collapsed state.

4. A respirator (1) according to claim 3 wherein the bladder side wall further comprises an intermediate connecting section located between the first and second sections and extending inwardly from the upper end of the first section in a circular arc.

5. Respirator (1) according to claim 1, characterized in that the spring assembly (20) comprises a plurality of positive pressure springs evenly distributed between the top plate (10) and the balloon shield (30).

6. The respirator (1) of claim 1, wherein the gas distribution valve (50) is configured to close upon loss of contact with the recess (402).

7. A respirator (1) according to claim 1, wherein the gas distribution valve (50) is configured to:

automatically closing during the transition of the resuscitation bag (40) towards its inflated state after a predetermined time of opening; alternatively, the first and second electrodes may be,

automatically closing upon reaching the inflated state of the resuscitation bag.

8. Respirator (1) according to claim 2, characterized in that the recess (402) and the projection (404) are respectively located in the centre of the first wall (401) and the second wall (403).

9. Respirator (1) according to claim 1 or 2, wherein the cross-section of the recess (402) and/or the protrusion (404) is circular.

10. A breathing gas bag (40), wherein the breathing gas bag (40) contains gas for breathing, having opposing first (401) and second (403) walls, the first wall (401) being provided with a deformable recess (402).

11. The resuscitation bag (40) according to claim 10, wherein said second wall (403) is provided with a deformable protrusion (404) matching the shape of said recess (402).

12. A method of use of a respirator (1) according to claim 1, wherein the method comprises:

supplying gas to a user using the breathing airbag (40) filled with gas;

when the breathing bag (40) moves to its collapsed state, the recess (402) triggers opening of the gas distribution valve (50) thereby inflating the breathing bag (40) from the gas source;

when the gas distribution valve (50) is inflated to be closed after the gas distribution valve (50) loses contact with the concave part (402), the gas distribution valve (50) is closed; and

the breathing bag (40) is reused to supply gas to the user.