CN113633861B - Two-way ventilation structure and oxygen supply device capable of adjusting inhaled oxygen concentration - Google Patents

Abstract

The invention relates to a bidirectional ventilation structure and an oxygen supply device with the bidirectional ventilation structure and capable of adjusting the concentration of inhaled oxygen. The bi-directional vent structure includes a vent valve mechanism disposed on a wall of the vent line for maintaining bi-directional gas flow within and out of the vent line and for expanding a gas flow path from the vent line to the outside when the pressure within the vent line is greater than the external pressure. The oxygen supply device with the bidirectional ventilation structure is provided with an air suction pipeline and an air exhaust pipeline, the air suction valve plate and the air exhaust valve plate are respectively responsible for air circulation of air suction and air exhaust, the convection passage of the bidirectional ventilation structure on the pipe wall of the air exhaust pipeline is adjusted to achieve adjustment of the concentration of the sucked oxygen, the principle is simpler and more reasonable, the pipeline is more compact, the dead space is reduced, ventilation and oxygen supply effects are improved, various oxygen supply devices with standard connectors such as a face mask and a nose mask can be connected, the applicability is wider, and the concentration of the sucked air and the oxygen can be adjusted in a reasonable range according to clinical requirements.

Description

Two-way ventilation structure and oxygen supply device capable of adjusting inhaled oxygen concentration

Technical Field

The invention belongs to the technical field of medical devices, in particular to a two-way ventilation structure and an oxygen supply device with the structure capable of adjusting the inhaled oxygen concentration.

Background Art

Hypoxemia refers to insufficient oxygen in the blood, which is mainly manifested as a decrease in arterial oxygen partial pressure (PaO2) and pulse oxygen saturation (SpO2). It is usually caused by insufficient ventilation or ventilation dysfunction caused by airway obstruction, respiratory depression, lung disease, etc. Oxygen supply is an effective means to prevent its occurrence. Nowadays, painless technology is widely used in clinical practice. Due to its good sedation and analgesia, it improves the completion rate and accuracy of diagnosis and treatment, and meets people's needs for comfortable medical care. It has been accepted by most examinees and medical workers. The most common painless technology in the endoscopy room or day surgery room is deep sedation and general anesthesia with preserved spontaneous breathing. The most dangerous situation of this sedation and anesthesia is hypoxemia caused by airway obstruction, apnea, etc. Inhalation of high-concentration oxygen is an important method for preventing and treating hypoxemia. However, for patients in recovery rooms, wards, etc. who need long-term oxygen therapy, it is necessary to prevent the inhalation of too high oxygen concentration to avoid the harm of oxygen poisoning. Therefore, it is of great clinical significance to design an adjustable oxygen supply device that can not only meet the needs of high-concentration oxygen supply, but also adjust the inhaled oxygen concentration to a safe range.

A patent document with publication number CN111135413A discloses a closed oxygen absorber, which is provided with an air storage bag and an oral and nasal mask, and adjusts the proportion of external air mixed in by a proportional control valve including a valve and a baffle. However, this technical solution still has certain shortcomings in actual use:

1. A two-way inlet and outlet gas valve is set on the same section perpendicular to the pipeline. In order to meet the oxygen inhalation requirements of the human body, the diameter of the pipeline will be larger and the pipeline will be thicker, which cannot be connected to the standard interface commonly used in the medical field;

2. It is not practical to adjust the oxygen intake and air intake at the same time by rotating the valve baffle. Not only is the adjustment accuracy difficult to grasp, but it also increases the operation workload of medical staff and is prone to errors.

3. The structure of the rotary valve baffle is relatively complicated to manufacture, which is not conducive to large-scale industrial production;

4. When breathing oxygen through this oxygen inhaler, since the pipeline is relatively thick and the pipeline is formed integrally with the mouth and nose mask, a large dead space is created in the mouth and nose mask and the pipeline, which is not conducive to the inhalation of oxygen.

Summary of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an oxygen supply device with a two-way ventilation structure and adjustable inhaled oxygen concentration.

The present invention solves the technical problem by adopting the following technical solutions:

A two-way ventilation structure includes a ventilation valve mechanism, which is arranged on the pipe wall of a ventilation pipeline. The ventilation valve mechanism is used to maintain two-way gas flow inside and outside the ventilation pipeline and expand the air flow path from the ventilation pipeline to the outside when the internal pressure of the ventilation pipeline is greater than the external pressure.

The ventilation valve mechanism includes a first air hole, a convection passage and a valve body installed in the first air hole. The valve body can open to the outside when the internal pressure of the ventilation pipeline is greater than the external pressure. The convection passage can maintain two-way gas flow inside and outside the ventilation pipeline and its ventilation capacity can be adjusted.

The valve body comprises a valve column slidably mounted in the first air hole and a vent valve sheet arranged on the valve column, and a stopper is arranged on the valve column to prevent the valve column from sliding off the first air hole.

The convection passage includes a gap left between the vent valve sheet and the first air hole.

The convection passage includes convection holes arranged on the ventilation pipeline.

An adjusting valve sheet is installed on the convection hole and the ventilation area of the convection can be changed by adjusting the valve sheet.

The two-way ventilation structure also includes a sleeve, which is rotatably sleeved on the ventilation pipeline. The sleeve is provided with a convection outer hole matched with the convection hole, and the area of communication between the convection outer hole and the convection hole can be changed by rotating the sleeve.

An oxygen supply device comprises an air supply pipe, wherein the air supply pipe comprises an inhalation pipeline and an exhalation pipeline, and is characterized in that: a two-way ventilation structure is arranged on the exhalation pipeline, an inhalation one-way valve mechanism is arranged on the inhalation pipeline, and the inhalation one-way valve mechanism is used to control the one-way gas flow from the inhalation pipeline to the exhalation pipeline.

Also included is a gas storage component, which is connected to the air intake pipeline and can communicate gas with the air intake pipeline.

A partition is arranged in the air intake pipeline, and the partition divides the air intake pipeline into an air intake passage and an air outlet passage. An air intake pipe is connected to the air intake passage.

The inhalation one-way valve mechanism includes an air hole cover and an inhalation valve sheet. The air hole cover is installed on one end of the inhalation pipeline close to the exhalation pipeline. The air hole cover is provided with a second air hole and the air hole cover blocks the air inlet passage to prevent the gas in the air inlet passage from flowing to the exhalation pipeline. The inhalation valve sheet is installed on the air hole cover. The inhalation valve sheet completely covers the second air hole and can be opened when the pressure in the air outlet passage is greater than the pressure in the exhalation pipeline.

The advantages and positive effects of the present invention are:

1. The oxygen supply device of the present invention is provided with two pipelines, namely, an inhalation pipeline and an exhalation pipeline, and the inhalation valve plate and the exhalation valve plate are responsible for the gas flow of inhalation and exhalation respectively. In particular, the concentration of inhaled oxygen is regulated by adjusting the convection path of the two-way ventilation structure on the wall of the exhalation pipeline, which is simpler and more reasonable than the Venturi principle, making the pipeline more compact as a whole, reducing the dead space volume, and improving the ventilation and oxygen supply effect. At the same time, this structure also allows one end of the ventilation structure to be set to, for example, have a 15mm standard conical interface, which can be connected to various oxygen supply devices with standard connectors, such as masks, nasal masks, and other breathing pipelines, etc., which significantly expands the clinical application range.

2. The ventilation valve mechanism of the two-way ventilation structure of the present invention can maintain two-way gas flow inside and outside the ventilation duct, so that when using an oxygen supply device including such a two-way ventilation structure, when inhaling, the oxygen in the inhalation duct enters the exhalation duct, and the outside air also enters the exhalation duct.

3. The ventilation capacity of the ventilation valve mechanism of the two-way ventilation structure of the present invention can be adjusted, so that the oxygen supply device including such a two-way ventilation structure can provide an oxygen concentration in the range of, for example, 21% to nearly 100%, so that the oxygen concentration in the patient's inhaled gas can be adjusted to a reasonable range according to clinical needs. For example, the above oxygen supply device can provide a higher oxygen concentration (for example, an oxygen concentration of up to 90% or even close to 100%) in the case of hypoxemia, and can also provide an oxygen concentration in a safe range (for example, an oxygen concentration of 50-60%) in the case of long-term oxygen therapy.

4. The bidirectional ventilation structure and oxygen supply device of the present invention are simple in structure and easy to prepare.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a front view schematic diagram of a two-way ventilation structure when a lateral gap is retained in Example 1;

FIG2 is a cross-sectional schematic diagram of the bidirectional ventilation structure when a lateral gap is retained in Example 1;

FIG3 is a cross-sectional schematic diagram of the bidirectional ventilation structure when a longitudinal gap is retained in Example 1;

FIG4 is a schematic diagram of the cooperation between the first air hole and the ventilation valve sheet in an arc-shaped state;

FIG5 is a schematic front view of a two-way ventilation structure in Example 2;

FIG6 is a schematic front view of a two-way ventilation structure in Example 3;

FIG7 is a cross-sectional schematic diagram of a two-way ventilation structure in Example 4;

FIG8 is an enlarged view of the positioning structure of the circle in FIG7;

FIG9 is a schematic diagram of the overall structure of the oxygen supply device;

FIG10 is a schematic cross-sectional view of an inhalation pipeline in an oxygen supply device;

FIG. 11 is a schematic side view of the inhalation pipeline in the oxygen supply device.

Among them, 1. the first air hole; 211. the gap; 212. the convection hole; 3. the valve body; 4. the valve column; 5. the ventilation valve plate; 6. the block; 7. the regulating valve plate; 8. the sleeve; 9. the convection outer hole; 10. the air supply pipe; 11. the air intake pipeline; 12. the air exhalation pipeline; 13. the air storage part; 14. the partition; 151. the air intake passage; 152. the air outlet passage; 16. the air intake pipe; 17. the air hole cover; 18. the air intake valve plate; 19. the second air hole; 20. the mounting hole; 21. the slot; 22. the positioning hole; 23. the positioning column; 24. the positioning spring; 25. the top block; 26. the mushroom cap.

DETAILED DESCRIPTION

The present invention is further described in detail below with reference to the accompanying drawings:

Example 1

As shown in Figures 1 and 2, the present invention proposes a two-way ventilation structure, including a ventilation valve mechanism, which is arranged on the pipe wall of the ventilation pipeline. The arrangement can be integrally formed or connected through a mounting structure or an external connector; the ventilation valve mechanism can enable the inside and outside of the ventilation pipeline to maintain the ability of gas convection, and when the pressure inside the ventilation pipeline is greater than the external pressure, the airflow path from the ventilation pipeline to the outside is expanded, so that the airflow inside the ventilation pipeline can quickly escape to the outside.

In the present invention, the ventilation valve mechanism includes a first air hole 1, a convection passage and a valve body 3 installed in the first air hole 1, wherein the valve body 3 can be opened to the outside when the internal pressure of the ventilation duct is greater than the external pressure, so that the gas inside the ventilation duct can flow to the outside, and the convection passage can always ensure convection capacity inside and outside the ventilation duct. In some examples, the ventilation capacity of the convection passage can be adjusted.

In some examples, the first air hole 1 can be but is not limited to a cross-shaped air hole. At the same time, a mounting hole 20 is also opened at the center of the first air hole 1. The valve body 3 includes a valve column 4 and a ventilation valve plate 5. The valve column 4 is slidably inserted in the mounting hole 20. In addition, in some examples, the diameter of the valve column 4 is slightly smaller than the diameter of the mounting hole 20 to facilitate the installation and removal of the valve column 4.

In some examples, the vent valve sheet 5 can be, but is not limited to, a circular soft material diaphragm, which is integrally formed and sleeved on the valve column 4. When the internal pressure of the ventilation pipeline is greater than the external pressure, the vent valve sheet 5 can bend and deform outward, thereby expanding the airflow path from the inside of the ventilation pipeline to the outside. In some examples, the diameter and length of the valve column 4 between the stopper 6 and the valve sheet 5 are slightly smaller than the mounting hole 20, so that the valve body 3 can move up and down in the mounting hole 20. When the internal pressure of the ventilation pipeline is greater than the external pressure, the vent valve sheet 5 can move outward, thereby expanding the airflow path from the inside of the ventilation pipeline to the outside.

In some examples, a stopper 6 is further provided on the valve column 4 to prevent the valve column 4 from slipping out of the mounting hole 20. As shown in FIG. 2 , the stopper 6 may be, but is not limited to, an inverted cone shape. When the valve column 4 is to be inserted into the mounting hole 20, the stopper 6 may penetrate into the mounting hole 20 when a certain pressure is applied. Similarly, the stopper 6 may also penetrate out of the mounting hole 20 when a certain pulling force is applied.

In some examples, when the internal pressure of the ventilation pipeline is less than the external pressure, the ventilation valve sheet 5 only covers a portion of the first air hole 1. And and/or therefore, in some examples, the convection passage includes a gap 211 between the ventilation valve sheet 5 and the first air hole 1, and in some examples, the gap 211 may be formed because the ventilation valve sheet 5 cannot completely block the ventilation part of the first air hole 1, resulting in a transverse gap between the two as shown in FIG. 1; at the same time, in some examples, the gap 211 may also be formed because the ventilation valve sheet 5 is not close to the first air hole 1, resulting in a longitudinal gap between the two as shown in FIG. 3; in addition, in some examples, the gap 211 may also include the above-mentioned transverse gap and longitudinal gap at the same time.

In addition, since the valve body 3 can be removed from the mounting hole 20, a valve body 3 with different ventilation valve sheets 5 can be selected for use according to actual needs. The size of the gap 211 can be changed by changing the shape and specifications of the ventilation valve sheet 5, thereby adjusting the ventilation capacity of the convection path.

In addition, in some examples, as shown in FIG. 4 , the first air hole 1 is in an arc shape as a whole, and the ventilation valve sheet 5 is also in an arc shape with a smaller curvature, and a gap 211 is left at the outer edge when the two are attached.

Example 2

As shown in FIG. 5 , different from the above-mentioned embodiment, in the present embodiment, the convection passage includes convection holes 212, and the convection holes 212 are directly arranged on the ventilation pipeline. At this time, in some examples, the ventilation valve sheet 5 can completely block the ventilation part of the first air hole 1. Only when the pressure in the ventilation pipeline is greater than the external pressure, the first air hole 1 has the ventilation capacity after the ventilation valve sheet 5 is opened. When the ventilation valve sheet 5 is not opened, the ventilation pipeline performs internal and external bidirectional gas convection through the convection holes 212 directly opened on the pipe wall; in addition, in some examples, the ventilation valve sheet 5 can still leave a gap 211 between the ventilation part of the first air hole 1, that is, the gap 211 and the convection holes 212 are used as the convection passage at the same time.

In addition, FIG5 shows only one convection hole 212, but the present invention is not limited thereto. One or more convection holes 212 may be provided, and the size, shape, number, etc. of the convection holes may be set according to actual needs, and a corresponding valve sheet (not shown) may be provided for each convection hole, and the convection capacity of the gas inside and outside the ventilation pipeline may be further adjusted by controlling the opening and closing of each convection hole.

Example 3

In some examples, as shown in FIG. 6 , an adjusting valve sheet 7 is installed at the convection hole 212 , and the adjusting valve sheet 7 can completely cover the convection hole 212 to prevent gas from entering and exiting the convection hole 212 . When the user rotates the adjusting valve sheet 7 , the area of the convection hole 212 covered by the adjusting valve sheet 7 can be changed, thereby adjusting the ventilation capacity of the convection hole 212 .

Example 4

In some examples, as shown in FIG. 7 , the two-way ventilation structure further includes a sleeve 8, which is rotatably mounted on the ventilation duct. At the same time, a convection outer hole 9 matching the convection hole 212 is provided on the sleeve 8. Therefore, when the user rotates the sleeve 8, when the convection outer hole 9 and the convection hole 212 completely overlap, the entire ventilation capacity of the convection hole 212 can be released; when the convection outer hole 9 and the convection hole 212 partially overlap, part of the ventilation capacity of the convection hole 212 can be released, and the user can change the overlapping area of the convection outer hole 9 and the convection hole 212 by rotating the sleeve 8, thereby adjusting the ventilation capacity of the convection hole 212; when the convection outer hole 9 and the convection hole 212 do not overlap at all, the convection hole 212 can be closed to prevent the internal and external gas circulation of the ventilation duct.

In addition, in some examples, the two-way ventilation structure also includes a part for cooperating with the sleeve 8 for positioning, as shown in Figure 8, the structure of the positioning part can be but is not limited to a slot 21 arranged on the ventilation pipeline, a plurality of positioning holes 22 arranged on the sleeve 8, a positioning column 23 slidably installed in the slot 21, and a positioning spring 24 connected between the positioning column 23 and the end surface of the slot 21, and a top block 25 slidably installed in the positioning hole 22, wherein the positioning column 23 can be slidably inserted in the positioning hole 22, and the user rotates the sleeve 8. When the positioning column 23 corresponds to the positioning hole 22, under the action of the positioning spring 24, the positioning column 23 will be inserted in the positioning hole 22, and at the same time, a part of the top block 25 will be pushed out of the positioning hole 22 by the positioning column 23. When the sleeve 8 needs to be rotated again, the user only needs to press the top block 25 to push the positioning column 23 out of the positioning hole 22.

Example 5

As shown in Figures 9, 10, and 11, the present invention also proposes an oxygen supply device with an adjustable inhaled oxygen concentration and a two-way ventilation structure. The device can be connected to an external supply device to deliver oxygen to a human body, and mainly includes an air supply pipe 10, which is divided into an inhalation pipeline 11 and an exhalation pipeline 12, and the two-way ventilation structure is arranged on the exhalation pipeline 12. At the same time, an inhalation one-way valve mechanism is arranged on the inhalation pipeline 11, which can control the one-way gas flow from the inhalation pipeline 11 to the exhalation pipeline 12. When the human body inhales, oxygen enters the exhalation pipeline 12 from the inhalation pipeline 11 through the inhalation one-way valve mechanism, and then flows out of the exhalation pipeline and finally enters the human body. In this process, since the two-way ventilation structure is arranged on the exhalation pipeline, when the oxygen supply flow rate remains constant, external air will enter the exhalation pipeline and mix with the oxygen flow. Moreover, as mentioned above, the two-way ventilation structure can adjust the convection capacity of the gas inside and outside the ventilation pipeline through the convection path. Therefore, the amount of air mixed into the oxygen flow can be adjusted according to actual needs, thereby adjusting the inhaled oxygen concentration. For example, the oxygen concentration can be adjusted within a range from 21% to nearly 100%. In particular, by adjusting the convection passage of the two-way ventilation structure, a high oxygen concentration of, for example, up to 90% or even close to 100% can be provided, and a safe range of oxygen concentration of, for example, 50-60% can also be provided.

Two inhalation and exhalation pipelines are set up, and their respective division of labor makes the overall size of the pipeline more appropriate. On the one hand, it can facilitate the connection and use of the pipeline and the standard joint. On the other hand, it can reduce the dead space volume during the use of the pipeline, and improve the ventilation and oxygen supply effects. In addition, in some examples, the exhalation pipeline 12 can be connected with but not limited to nasal masks, face masks and other common devices for use.

In some examples, the inhalation line 11 and the exhalation line 12 are split, and are connected together by a socket connection, a connecting structure, or an external connector. In addition, in some examples, the inhalation line 11 and the exhalation line 12 are integrated, and the integrated line is divided into the inhalation line 11 and the ventilation line by setting an inhalation one-way valve mechanism.

In some examples, the exhalation circuit 12 is provided with a plurality of bidirectional ventilation structures, which cooperate with each other to adjust the amount of air mixed into the exhalation tube, thereby being able to adjust the oxygen concentration within a range of, for example, 21% to nearly 100%.

In some examples, the oxygen inhalation device also includes an air storage device 13. The oxygen delivered by the external device will be first stored in the air storage device 13, and then delivered to the inhalation pipeline 11 by the air storage device 13. Therefore, the air storage device 13 needs to be connected with the inhalation pipeline 11 and the external device. During the diagnosis and treatment process, the oxygen delivered by the external oxygen supply device is stored in the air storage device 13. Since each person needs a little more than one liter of oxygen per hour, the gas storage capacity of the air storage device 13 is generally 1 liter or 2 liters, but not limited to this.

In addition, in some examples, the air storage member 13 may be, but is not limited to, an air bag, and is connected to the air intake pipe 11 by bonding or hot rolling, but is not limited thereto.

In some examples, a partition 14 is provided in the intake pipeline 11, and the partition 14 divides the intake pipeline 11 into an intake passage 151 and an outlet passage 152, and an intake pipe 16 is connected to the intake passage 151. In this way, an external device can be directly connected to the intake pipe 16, and the oxygen transported by it enters the air storage member 13 through the intake passage 151 in the intake pipeline 11. The structure can be simplified as a whole, and the air storage member 13 no longer needs to be connected to an external oxygen supply device, thereby reducing the volume of the overall device.

In some examples, the inhalation one-way valve mechanism includes an air hole cover 17 and an inhalation valve plate 18, wherein the air hole cover 17 is installed on one end of the inhalation pipeline 11 close to the exhalation pipeline 12, and a second air hole 19 is arranged on the air hole cover 17. In some examples, the air hole cover 17 blocks the air inlet passage 151 so that the oxygen in the air inlet passage 151 can only enter the air storage component 13 but cannot flow into the exhalation pipeline 12, and the inhalation valve plate 18 is installed on the air hole cover 17. The inhalation valve plate 18 can completely cover the second air hole 19 and open when the pressure in the air outlet passage 152 is greater than the pressure in the exhalation pipe, so that the airflow in the air outlet passage 152 can enter the exhalation pipeline 12.

In some examples, the air hole cover 17 is cross-shaped, a mushroom cap 26 is disposed at the center of the air hole cover 17 , and the air suction valve sheet 18 is a circular soft material diaphragm and is mounted on the mushroom cap 26 .

In some examples, the pore cover 17 is arc-shaped, and the corresponding air intake valve plate 18 is also arc-shaped, and the two are adapted to each other so that the air intake valve plate 18 can fit on the pore cover 17 and completely block the second pore 19 .

Although each embodiment is described separately above, the technical features and implementation methods recorded in different embodiments may also be combined with each other.

It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention includes but is not limited to the embodiments described in the specific implementation modes. Any other implementation modes derived by those skilled in the art based on the technical solutions of the present invention also fall within the scope of protection of the present invention.

Claims (8)

1. A two-way ventilation structure, comprising a ventilation valve mechanism, wherein the ventilation valve mechanism is arranged on the pipe wall of a ventilation pipeline, and is characterized in that: the ventilation valve mechanism is used to maintain two-way gas flow inside and outside the ventilation pipeline and to expand the air flow path from the ventilation pipeline to the outside when the internal pressure of the ventilation pipeline is greater than the external pressure; The ventilation valve mechanism comprises a first air hole (1), a convection passage and a valve body (3) installed in the first air hole (1), the valve body (3) being capable of opening to the outside when the internal pressure of the ventilation pipeline is greater than the external pressure, the convection passage being capable of maintaining two-way gas flow inside and outside the ventilation pipeline and its ventilation capacity being capable of being adjusted; The valve body (3) comprises a valve column (4) slidably mounted in the first air hole (1) and a vent valve plate (5) arranged on the valve column (4); a stopper (6) is arranged on the valve column (4) to prevent the valve column (4) from sliding out of the first air hole (1); The convection passage comprises a gap (211) remaining between the ventilation valve sheet (5) and the first air hole (1). 2. The two-way ventilation structure according to claim 1, characterized in that: the convection passage further comprises a convection hole (212) arranged on the ventilation pipeline. 3. The two-way ventilation structure according to claim 2, characterized in that an adjusting valve sheet (7) is installed on the convection hole (212) and the ventilation area of the convection hole (212) can be changed by adjusting the valve sheet (7). 4. The two-way ventilation structure according to claim 2 is characterized in that: the two-way ventilation structure further comprises a sleeve (8), the sleeve (8) is rotatably sleeved on the ventilation pipeline, a convection outer hole (9) adapted to the convection hole (212) is opened on the sleeve (8), and the area of communication between the convection outer hole (9) and the convection hole (212) can be changed by rotating the sleeve (8). 5. An oxygen supply device, comprising an air supply pipe (10), wherein the air supply pipe (10) comprises an inhalation pipeline (11) and an exhalation pipeline (12), characterized in that: the exhalation pipeline (12) is provided with a two-way ventilation structure as claimed in any one of claims 1 to 4, and the inhalation pipeline (11) is provided with an inhalation check valve mechanism, and the inhalation check valve mechanism is used to control the one-way gas flow from the inhalation pipeline (11) to the exhalation pipeline (12). 6. The oxygen supply device according to claim 5, characterized in that it also comprises a gas storage member (13), wherein the gas storage member (13) is connected to the air intake pipeline (11) and can communicate gas with the air intake pipeline (11). 7. The oxygen supply device according to claim 6, characterized in that: a partition (14) is provided in the air intake pipeline (11), and the partition (14) divides the air intake pipeline (11) into an air intake passage (151) and an air outlet passage (152), and an air intake pipe (16) is connected to the air intake passage (151). 8. The oxygen supply device according to claim 5, characterized in that: the inhalation check valve mechanism comprises an air hole cover (17) and an inhalation valve plate (18), the air hole cover (17) is installed on one end of the inhalation pipeline (11) close to the exhalation pipeline (12), the air hole cover (17) is provided with a second air hole (19), and the air hole cover (17) blocks the air inlet passage (151) to prevent the gas in the air inlet passage (151) from flowing to the exhalation pipeline (12), and the inhalation valve plate (18) is installed on the air hole cover (17), the inhalation valve plate (18) completely covers the second air hole (19) and can be opened when the pressure in the air outlet passage (152) is greater than the pressure in the exhalation pipeline (12).