Single-person oxygen cabin pulse type oxygen uptake adjusting system and adjusting method thereof

Abstract

The invention provides a single-person oxygen cabin pulse type oxygen uptake adjusting system and an adjusting method thereof, and belongs to the technical field of oxygen cabin equipment.The single-person oxygen cabin pulse type oxygen uptake adjusting system comprises a cabin body, and the cabin body is provided with a cabin door and an automatic pressure relief valve used for relieving pressure to keep the air pressure in the cabin body stable; the oxygen buffer tank is used for temporarily storing oxygen, the oxygen buffer tank is mounted on the outer side of the cabin body, one end of the oxygen buffer tank is communicated with the cabin body, and the other end of the oxygen buffer tank is connected with an external high-pressure oxygen generator through a pipeline; on the premise that an industrial-grade oxygen generator or a hospital and other places do not need centralized oxygen supply, a user can inhale high-concentration oxygen, meanwhile, the structure of the technical scheme is not complex, closed oxygen inhalation treatment can be conducted in a household scene under the condition that too much cost is not increased, practicability is higher, and application and popularization are better facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of oxygen chamber equipment, and in particular to a pulse oxygen inhalation regulating system and a regulating method thereof for a single-person oxygen chamber. Background Art

[0002] The oxygen chamber is a special medical device for hyperbaric oxygen therapy. Its principle is to place the user in an oxygen-rich environment with higher than normal atmospheric pressure. Under the action of high pressure, oxygen is input into the respiratory and microcirculatory systems and reaches various organs of the human body, thereby increasing the level of arterial oxygen partial pressure and oxygen saturation to promote human metabolism.

[0003] At present, the commonly used hyperbaric oxygen chamber oxygen inhalation methods are divided into closed oxygen inhalation and open oxygen inhalation. Among them, closed oxygen inhalation refers to the use of a special oxygen mask, which is connected to an intake pipe and an exhaust pipe. The intake pipe is connected to a large flow oxygen source outside the cabin, and the exhaust pipe is directly connected to the air outside the cabin. A large flow of oxygen enters from the air inlet pipe and is discharged from the exhaust pipe, and the oxygen internal circulation is always maintained. After the user wears the oxygen mask, an independent space is formed inside the oxygen mask, which is not affected by the pressure in the oxygen chamber. Since this independent space is always in the oxygen internal circulation, the user can inhale fresh oxygen when inhaling, and when exhaling, waste gases such as carbon dioxide are discharged out of the chamber along with the oxygen circulation. This solution can ensure that the user always inhales high-concentration oxygen, but there is a disadvantage, that is, a sufficiently large oxygen flow rate must be required to ensure that a sufficient flow of oxygen circulation can supply the user with oxygen, and the currently commonly used household oxygen generator cannot meet this flow demand, and often requires industrial-grade oxygen generators or centralized oxygen supply in hospitals and other places to meet it, which is not suitable for single-person home use; another oxygen inhalation method is open oxygen inhalation, that is, using a nasal oxygen cannula or an earphone-type oxygen inhalation cannula, and the oxygen outlet is placed inside or around the nasal cavity, and the provided oxygen is inhaled into the user's body together with the surrounding air. Although this oxygen inhalation method does not require a large flow of oxygen, the oxygen concentration of the inhaled oxygen cannot be guaranteed because it is mixed with air, which will affect the treatment effect. Summary of the invention

[0004] The present invention provides a pulse oxygen inhalation regulating system for a single-person oxygen chamber and a regulating method thereof, so as to solve the technical problem that the household oxygen chamber in the prior art is difficult to meet the requirements of closed oxygen inhalation.

[0005] In order to solve the above problems, the single-person oxygen chamber pulse oxygen inhalation regulation system provided by the present invention adopts the following technical solutions: comprising a chamber body, the chamber body is equipped with a chamber door and an automatic pressure relief valve for pressure relief to maintain stable air pressure in the chamber; It also includes an oxygen buffer tank, which is used to temporarily store oxygen. The oxygen buffer tank is installed outside the cabin, one end of the oxygen buffer tank is connected to the cabin, and the other end of the oxygen buffer tank is connected to an external high-pressure oxygen generator through a pipeline. A sealing slider that can slide along the axial direction of the oxygen buffer tank is provided in the oxygen buffer tank; An oxygen outlet solenoid valve and an oxygen tank exhaust valve are sequentially installed on the pipeline between the oxygen buffer tank and the external high-pressure oxygen generator. The oxygen outlet solenoid valve is used to discharge oxygen, and the oxygen tank exhaust valve is used to empty the air in the oxygen buffer tank. An oxygen mask is arranged in the cabin and is used for the user to breathe oxygen. The oxygen mask has an air inlet pipe and an air outlet pipe, both of which extend to the outside of the cabin. An external air compressor is divided into two air paths through a three-way connection, one of which is connected to the air inlet pipe of the oxygen mask, and the other is connected to the cabin. An air solenoid valve is also connected to the pipeline between the external air compressor and the oxygen mask, and the other end of the oxygen outlet solenoid valve is connected to the pipeline between the air solenoid valve and the oxygen mask through a pipeline; The micro-pressure differential sensor is connected to the oxygen mask through a pipeline and is used to detect the air pressure change in the oxygen mask.

[0006] As a further improvement, the sealing slider is fixedly connected with a sealing ring.

[0007] As a further improvement, one end of the oxygen buffer tank is provided with a trachea interface for connection to an external high-pressure oxygen generator, and the other end of the oxygen buffer tank is fixedly connected to a curved connecting pipe, and the other end of the curved connecting pipe is connected to the cabin.

[0008] By adopting the above technical solution, it is possible to use the currently commonly used household high-pressure oxygen machine to perform closed oxygen therapy at home.

[0009] The sealing slider in the oxygen buffer tank divides the space inside the tank into two independent cavities. The sealing slider can slide along the axial direction of the oxygen buffer tank, thereby changing the volume of the two cavities.

[0010] During specific use, the air compressor pressurizes the cabin and the sealing slider moves toward the side of the trachea interface. At this time, the exhaust valve of the oxygen tank opens to exhaust. After the air on the side of the sealing slider close to the trachea interface is exhausted, the high-pressure oxygenator is started, the exhaust valve of the oxygen tank is closed, and the high-pressure oxygenator adds oxygen to the oxygen buffer tank. The sealing slider slides toward the side close to the curved connecting pipe until the oxygen buffer tank is filled with oxygen.

[0011] When the user inhales, the micro-pressure differential sensor detects that the air pressure in the oxygen mask decreases, the air solenoid valve closes and the oxygen outlet solenoid valve opens. At this time, the oxygen from the high-pressure oxygenator and the oxygen in the oxygen buffer tank enter the oxygen mask at the same time, ensuring the large flow of oxygen supply required for the oxygen mask to absorb oxygen.

[0012] On the contrary, when the user exhales, the micro-pressure differential sensor detects that the air pressure in the oxygen mask increases, the air solenoid valve opens and the oxygen outlet solenoid valve closes. At this time, air enters from the oxygen mask inlet pipe and is discharged from the exhaust pipe, taking out the waste gas exhaled by the user.

[0013] The above two states are subsequently switched cyclically to ensure that the user inhales high-concentration oxygen in a pulsed manner.

[0014] The present invention also discloses a single-person oxygen chamber pulse oxygen inhalation regulation method, which adopts the single-person oxygen chamber pulse oxygen inhalation regulation system, and comprises the following steps: S1, pressurization, the user enters the cabin, puts on the oxygen mask, and closes the cabin door; at the same time, the air compressor is turned on, the air solenoid valve is opened, and one air path of the air compressor is connected to the air inlet pipe of the oxygen mask to provide air circulation to ensure the user's normal breathing; the other air path of the air compressor is filled into the cabin to pressurize the cabin; At the same time, the oxygen tank exhaust valve is also opened. The oxygen tank exhaust valve is connected to the air. As the pressure in the cabin increases, the sealing slider in the oxygen buffer tank moves toward the trachea interface end until all the air on the side of the sealing slider in the oxygen buffer tank close to the trachea interface is exhausted, and then the oxygen tank exhaust valve is closed; S2. Add oxygen to the oxygen buffer tank and turn on the high-pressure oxygenator. At this time, oxygen enters the oxygen buffer tank. Since the pressure provided by the high-pressure oxygenator is higher than the treatment pressure of the cabin, the sealing slider in the oxygen buffer tank moves toward the end of the curved connecting pipe. The oxygen gradually fills the oxygen buffer tank and increases the pressure in the oxygen buffer tank to form a balance with the outlet pressure of the high-pressure oxygenator. During this process, the cabin is continuously pressurized and the user continues to inhale air to maintain breathing. S3, pulse oxygen inhalation, when the pressure in the cabin rises to the treatment pressure, the pressure change in the oxygen mask can be detected by the micro-pressure difference sensor connected to the oxygen mask; When the pressure in the oxygen mask begins to drop, it means that the user is starting to inhale. At this time, the air solenoid valve is closed and the oxygen outlet solenoid valve is opened. The oxygen from the high-pressure oxygen generator and the oxygen in the oxygen buffer tank enter the oxygen mask at the same time. The flow rate of the oxygen from the high-pressure oxygen generator is stable due to the control of the flowmeter. When the oxygen in the oxygen buffer tank decreases, the pressure in the oxygen buffer tank drops, but it always remains higher than or equal to the cabin pressure, which can ensure the continuous outflow of oxygen. The oxygen flow rate at this time is much greater than the oxygen flow rate of a single oxygen generator, which can ensure the large flow of oxygen required for oxygen inhalation by the oxygen mask; When the pressure in the oxygen mask begins to rise, it means that the user is starting to exhale. At this time, the air solenoid valve is opened and the oxygen outlet solenoid valve is closed. At this time, air enters from the oxygen mask inlet pipe and is discharged from the exhaust pipe, taking out the waste gas exhaled by the user. At the same time, the high-pressure oxygenator refills the oxygen buffer tank with oxygen to ensure the continuous operation of the oxygen buffer tank. As the treatment progresses, the two states are switched cyclically to ensure that the user inhales high-concentration oxygen in a pulsed manner.

[0015] The beneficial effects of the above technical solution of the present invention are as follows: 1. The present invention utilizes the characteristics of breathing. When the user exhales, air is used to discharge the user's exhaled waste gas, and at the same time, the oxygen from the high-pressure oxygenator is charged into the oxygen buffer tank for temporary storage, which can reduce the waste of this part of oxygen and effectively utilize this part of oxygen; when the user inhales, the high-pressure oxygenator and the oxygen buffer tank simultaneously supply air to the oxygen mask; thereby, the user can inhale high-concentration oxygen through a closed pulse oxygen inhalation method in a single cabin in a home scenario, under the premise of using a home high-pressure oxygenator, thereby achieving better therapeutic effects.

[0016] 2. Through the closed oxygen inhalation method, the accumulation of carbon dioxide concentration in the cabin can be greatly reduced to ensure the health and safety of users.

[0017] 3. The present invention enables users to inhale high-concentration oxygen without the need for industrial-grade oxygen generators or centralized oxygen supply in hospitals and other places. At the same time, the structure of the technical solution is not complicated. Without increasing too much cost, closed oxygen inhalation therapy can be achieved in home scenarios, which is more practical and more conducive to popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1 It is a structural schematic diagram of the pulse oxygen inhalation regulation system of a single-person oxygen chamber of the present invention; Figure 2 It is a schematic diagram of the pressure-starting stage of the pulse oxygen inhalation regulation system of a single-person oxygen chamber of the present invention; Figure 3 for Figure 2 AA section view; Figure 4 It is a schematic diagram of the oxygenation stage of the pulse oxygen inhalation regulation system of a single oxygen chamber of the present invention; Figure 5 for Figure 4 BB cross-sectional view; Figure 6 A pulse oxygen inhalation schematic diagram of a pulse oxygen inhalation regulating system for a single-person oxygen chamber of the present invention; Figure 7 for Figure 6 CC cross-sectional view.

[0019] Description of reference numerals: 100. Cabin body; 110. Automatic pressure relief valve; 120. Cabin door; 200. Oxygen buffer tank; 210. Sealing slider; 220. Sealing ring; 300. Oxygen outlet solenoid valve; 400. Oxygen tank exhaust valve; 500. Air solenoid valve; 600. Micro pressure difference sensor; 700. Oxygen mask. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0021] Compared with open oxygen therapy, closed oxygen therapy can ensure sufficient oxygen and has a relatively better treatment effect. In the prior art, closed oxygen therapy requires industrial-grade oxygen generators or centralized oxygen supply in hospitals and other places. The currently commonly used household oxygen generators are difficult to meet this flow demand and are not suitable for single-person home use.

[0022] In response to the above problems, the present invention has designed a single-person oxygen chamber pulse oxygen inhalation regulation system, which realizes closed oxygen inhalation therapy in home scenarios without adding additional oxygen supply equipment such as oxygen tanks.

[0023] The basic principle is to utilize the closed oxygen chamber and breathing characteristics. We found that the existing closed oxygen chamber system continuously supplies oxygen. When the user inhales, it supplies oxygen to the user; and when the user exhales, the main function of the oxygen provided by the oxygen chamber system is to carry away the exhaled waste gas.

[0024] The present invention is provided with an oxygen buffer tank 200 for temporarily storing oxygen and a micro-pressure difference sensor 600 for detecting the pressure change of the oxygen mask 700. When the user exhales, the pressure in the oxygen mask 700 increases, and the oxygen mask 700 switches to the air compressor line to discharge the exhaled waste gas through the air; at the same time, during the exhalation process, the high-pressure oxygenator temporarily stores the produced oxygen in the oxygen buffer tank 200. When the user inhales, the pressure in the oxygen mask 700 decreases, and the oxygen mask 700 switches to the oxygen supply line. The high-pressure oxygenator and the oxygen buffer tank 200 simultaneously deliver oxygen to the oxygen mask 700. At this time, the oxygen flow rate is much greater than the oxygen flow rate of a single high-pressure oxygenator, ensuring that the user inhales high-concentration oxygen.

[0025] After introducing the basic principle of the present invention, various non-limiting embodiments of the present invention are described in detail below. The number of any element in the drawings is for illustration and not for limitation, and any naming is only for distinction and does not have any limiting meaning.

[0026] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0027] Example 1 of the pulse oxygen inhalation regulation system for a single person oxygen chamber provided by the present invention: like Figure 1-Figure 7 As shown, the cabin 100 is provided with a door 120 and an automatic pressure relief valve 110 for relieving pressure to maintain a stable air pressure in the cabin 100; It also includes an oxygen buffer tank 200, which is used to temporarily store oxygen. In this embodiment, the oxygen buffer tank 200 is cylindrical and is installed on the outside of the cabin 100. One end of the oxygen buffer tank 200 is fixedly connected to a curved connecting pipe (not marked in the figure), and the other end of the curved connecting pipe is communicated with the cabin 100. The other end of the oxygen buffer tank 200 is fixedly connected to a trachea interface (not marked in the figure), and the trachea interface is connected to an external high-pressure oxygenator through a pipeline. The high-pressure oxygenator and the following air compressor are both prior arts, and their structures are not repeated here. A sealing slider 210 that can slide along the axial direction of the oxygen buffer tank 200 is provided in the oxygen buffer tank 200. The sealing slider 210 is cylindrical, and the sealing slider 210 is fixedly connected to a sealing ring 220 to ensure sealing.

[0028] The function of the sealing slider 210 is to separate the space inside the tank into two independent cavities. The sealing slider 210 can slide along the axial direction of the oxygen buffer tank, thereby changing the volume of the two cavities.

[0029] An oxygen outlet solenoid valve 300 and an oxygen tank exhaust valve 400 are sequentially installed on the pipeline between the oxygen buffer tank 200 and the external high-pressure oxygenator. The oxygen outlet solenoid valve 300 is used to discharge oxygen, and the oxygen tank exhaust valve 400 is used to exhaust the air in the oxygen buffer tank 200. In this embodiment, the oxygen outlet solenoid valve 300 and the oxygen tank exhaust valve 400 are both connected to the pipeline between the oxygen buffer tank 200 and the external high-pressure oxygenator through a three-way pipe; An oxygen mask 700 is arranged in the cabin 100 and is used for the user to breathe oxygen. The oxygen mask 700 has an air inlet pipe and an air outlet pipe, both of which extend to the outside of the cabin 100. An external air compressor is divided into two air paths through a three-way connection, one of which is connected to the air inlet pipe of the oxygen mask 700, and the other is connected to the cabin 100. An air solenoid valve 500 is also connected to the pipeline between the external air compressor and the oxygen mask 700, and the other end of the oxygen outlet solenoid valve 300 is connected to the pipeline between the air solenoid valve 500 and the oxygen mask 700 through a pipeline; The micro-pressure difference sensor 600 is connected to the oxygen mask 700 through a pipeline, and the micro-pressure difference sensor 600 is used to detect the air pressure change in the oxygen mask 700.

[0030] This embodiment also discloses a single-person oxygen chamber pulse oxygen inhalation regulation method, which uses the above-mentioned single-person oxygen chamber pulse oxygen inhalation regulation system, and includes the following steps: S1, pressurization, such as Figure 2 and Figure 3 As shown, the user enters the cabin 100, puts on the oxygen mask 700, and closes the cabin door 120; at the same time, the air compressor is turned on, the air solenoid valve 500 is opened, and one air path of the air compressor is connected to the air inlet pipe of the oxygen mask 700 to provide air circulation to ensure the user's normal breathing; the other air path of the air compressor is filled into the cabin 100 to pressurize the cabin 100; At this time, the oxygen outlet solenoid valve 300 is in a closed state; At the same time, the oxygen tank exhaust valve 400 is also opened. The oxygen tank exhaust valve 400 is connected to the air. As the pressure in the cabin 100 increases, the sealing slider 210 in the oxygen buffer tank 200 moves toward the trachea interface end until all the air on the side of the sealing slider 210 in the oxygen buffer tank 200 close to the trachea interface is exhausted, and then the oxygen tank exhaust valve 400 is closed.

[0031] S2, add oxygen to the oxygen buffer tank 200, such as Figure 4 and Figure 5 As shown, the high-pressure oxygenator is turned on, and oxygen enters the oxygen buffer tank 200. Since the pressure provided by the high-pressure oxygenator is higher than the treatment pressure of the cabin 100, the sealing slider 210 in the oxygen buffer tank 200 moves toward the curved connecting pipe end, and the oxygen gradually fills the oxygen buffer tank 200, and the pressure in the oxygen buffer tank 200 is increased to form a balance with the outlet pressure of the high-pressure oxygenator. During this process, the cabin 100 is continuously pressurized and the user continues to inhale air to maintain breathing; S3, pulse oxygen inhalation, such as Figure 6 and Figure 7 As shown, when the pressure in the cabin 100 rises to the treatment pressure, at this time, the micro-pressure difference sensor 600 connected to the oxygen mask 700 can detect the pressure change in the oxygen mask 700; When the pressure in the oxygen mask 700 begins to drop, it means that the user is starting to inhale. At this time, the air solenoid valve 500 is closed and the oxygen outlet solenoid valve 300 is opened. The oxygen outlet of the high-pressure oxygenator and the oxygen in the oxygen buffer tank 200 enter the oxygen mask 700 at the same time. The flow rate of the oxygen outlet of the high-pressure oxygenator is stable due to the control of the flowmeter. When the oxygen in the oxygen buffer tank 200 decreases, the pressure in the oxygen buffer tank 200 decreases, but it always remains higher than or equal to the cabin pressure, which can ensure that oxygen continues to flow out. The oxygen flow rate at this time is much greater than the oxygen flow rate of a single oxygen concentrator, which can ensure the large flow rate of oxygen required for the oxygen mask 700 to inhale oxygen. At the same time, as the oxygen in the oxygen buffer tank 200 is discharged, the sealing slider 210 moves toward the side of the trachea interface; When the pressure in the oxygen mask 700 begins to rise, it means that the user is starting to exhale. At this time, the air solenoid valve 500 is opened and the oxygen outlet solenoid valve 300 is closed. At this time, air enters from the air inlet pipe of the oxygen mask 700 and is discharged from the exhaust pipe, taking out the waste gas exhaled by the user. At the same time, the high-pressure oxygenator refills the oxygen buffer tank 200 with oxygen to ensure the continuous operation of the oxygen buffer tank 200. As the treatment progresses, the two states are switched cyclically to ensure that the user inhales high-concentration oxygen in a pulsed manner.

[0032] Although this specification has shown and described a plurality of embodiments of the present invention, it is obvious to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art will think of many changes, modifications and alternatives without departing from the thought and spirit of the present invention. It should be understood that in the process of practicing the present invention, various alternatives to the embodiments of the present invention described herein may be adopted. The attached claims are intended to define the scope of protection of the present invention, and therefore cover the modular composition, equivalent or alternatives within the scope of protection of these claims.

Claims

1. A single-person oxygen chamber pulse oxygen inhalation regulation system, comprising: A cabin (100), the cabin (100) being equipped with a cabin door (120) and an automatic pressure relief valve (110) for releasing pressure to maintain a stable air pressure in the cabin (100); The invention is characterized in that it further comprises an oxygen buffer tank (200) for temporarily storing oxygen, wherein the oxygen buffer tank (200) is installed outside the cabin (100), one end of the oxygen buffer tank (200) is in communication with the cabin (100), and the other end of the oxygen buffer tank (200) is connected to an external high-pressure oxygen generator via a pipeline, and a sealing slider (210) is provided in the oxygen buffer tank (200) and can slide along the axial direction of the oxygen buffer tank (200); An oxygen outlet solenoid valve (300) and an oxygen tank exhaust valve (400) are sequentially installed on the pipeline between the oxygen buffer tank (200) and the external high-pressure oxygen generator, wherein the oxygen outlet solenoid valve (300) is used to discharge oxygen, and the oxygen tank exhaust valve (400) is used to exhaust the air in the oxygen buffer tank (200); An oxygen breathing mask (700) is arranged in the cabin (100), and is used for a user to breathe oxygen. The oxygen breathing mask (700) comprises an air inlet pipe and an air outlet pipe, and both the air inlet pipe and the air outlet pipe extend to the outside of the cabin (100); an external air compressor is divided into two air paths through a three-way connection, one of the air paths of the external air compressor is connected to the air inlet pipe of the oxygen breathing mask (700), and the other air path of the external air compressor is connected to the cabin (100); An air solenoid valve (500) is also connected to the pipeline between the external air compressor and the oxygen mask (700); the other end of the oxygen outlet solenoid valve (300) is connected to the pipeline between the air solenoid valve (500) and the oxygen mask (700) through a pipeline; The micro-pressure difference sensor (600) is connected to the oxygen breathing mask (700) through a pipeline, and the micro-pressure difference sensor (600) is used to detect the change of air pressure in the oxygen breathing mask (700).

2. The single-person oxygen chamber pulse oxygen inhalation regulation system according to claim 1 is characterized in that: The sealing slider (210) is fixedly connected to a sealing ring (220).

3. The single-person oxygen chamber pulse oxygen inhalation regulation system according to claim 1 is characterized in that: One end of the oxygen buffer tank (200) is provided with an air pipe interface for connecting to an external high-pressure oxygen generator, and the other end of the oxygen buffer tank (200) is fixedly connected to a curved connecting pipe, and the other end of the curved connecting pipe is connected to the cabin (100).

4. A single-person oxygen chamber pulse oxygen inhalation regulation method, using the single-person oxygen chamber pulse oxygen inhalation regulation system according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1, pressurization, the user enters the cabin (100), puts on the oxygen mask (700), and closes the cabin door (120); at the same time, the air compressor is turned on, the air solenoid valve (500) is opened, and one air path of the air compressor is connected to the air inlet pipe of the oxygen mask (700) to provide air circulation to ensure normal breathing of the user; the other air path of the air compressor is charged into the cabin (100) to pressurize the cabin (100); At the same time, the oxygen tank exhaust valve (400) is also opened. The oxygen tank exhaust valve (400) is connected to air. As the pressure in the cabin (100) increases, the sealing slider (210) in the oxygen buffer tank (200) moves toward the trachea interface end until all the air on the side of the sealing slider (210) in the oxygen buffer tank (200) close to the trachea interface is exhausted, and then the oxygen tank exhaust valve (400) is closed. S2, adding oxygen to the oxygen buffer tank (200), the high-pressure oxygenator is turned on, and oxygen enters the oxygen buffer tank (200). Since the pressure provided by the high-pressure oxygenator is higher than the treatment pressure of the cabin (100), the sealing slider (210) in the oxygen buffer tank (200) moves toward the end of the curved connecting pipe, and the oxygen gradually fills the oxygen buffer tank (200), and the pressure in the oxygen buffer tank (200) is increased to a balance with the outlet pressure of the high-pressure oxygenator. During this process, the cabin (100) is continuously pressurized and the user continues to inhale air to maintain breathing; S3, pulse oxygen inhalation, when the pressure in the cabin (100) rises to the treatment pressure, at this time, the micro-pressure difference sensor (600) connected to the oxygen mask (700) can detect the pressure change in the oxygen mask (700); When the pressure in the oxygen mask (700) starts to drop, it indicates that the user is starting to inhale. At this time, the air solenoid valve (500) is closed and the oxygen outlet solenoid valve (300) is opened. The oxygen outlet of the high-pressure oxygen generator and the oxygen in the oxygen buffer tank (200) enter the oxygen mask (700) at the same time. The flow rate of the oxygen outlet of the high-pressure oxygen generator is stable due to the control of the flow meter. When the oxygen in the oxygen buffer tank (200) decreases, the pressure in the oxygen buffer tank (200) decreases, but always remains higher than or equal to the cabin pressure, which can ensure that oxygen continues to flow out. At this time, the oxygen flow rate is much greater than the oxygen flow rate of a single oxygen generator, which can ensure the large flow rate of oxygen required for the oxygen mask (700) to inhale oxygen. When the pressure in the oxygen mask (700) starts to rise, it indicates that the user is starting to exhale. At this time, the air solenoid valve (500) is opened and the oxygen outlet solenoid valve (300) is closed. At this time, air enters from the air inlet pipe of the oxygen mask (700) and is discharged from the exhaust pipe, taking out the waste gas exhaled by the user. At the same time, the high-pressure oxygenator refills the oxygen buffer tank (200) with oxygen to ensure the continuous operation of the oxygen buffer tank (200); As the treatment progresses, the two states are switched cyclically to ensure that the user inhales high-concentration oxygen in a pulsed manner.

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