Carbon dioxide-oxygen mixture therapy device

Abstract

The application provides a carbon dioxide and oxygen mixture treatment device, comprising a cover body, a mixture preparation box, an oxygen supply adjusting device and an air inlet and outlet assembly. The oxygen supply adjusting device is connected with the mixture preparation box to provide oxygen, and the preset oxygen supply amount of the oxygen is adjusted to adjust the partial pressure value of carbon dioxide in the mixture preparation box. The mixture preparation box is used for mixing the oxygen with the preset oxygen supply amount provided by the oxygen supply adjusting device and the carbon dioxide with the corresponding partial pressure value to form a mixed gas. The cover body can accommodate the face to pass in the mixed gas and exhaust oxygen and carbon dioxide. The cover body is connected with the mixture preparation box through the air inlet and outlet assembly, and the oxygen and carbon dioxide exhausted from the cover body are transported to the mixture preparation box. The source of the carbon dioxide in the mixture preparation box is the carbon dioxide exhausted from the cover body, and the carbon dioxide exhausted from the cover body is recycled between the mixture preparation box and the cover body, so that the partial pressure value of the carbon dioxide in the mixed gas is maintained at 20-35 mmHg.

Description

Technical Field

[0001] This application relates to the field of gas preparation technology, specifically to a carbon dioxide mixed oxygen therapy device. Background Technology

[0002] Oxygen is an indispensable gas for life. Hyperbaric oxygen therapy is an essential treatment for cardiovascular and cerebrovascular diseases and for critically ill patients. It is also a good method for health maintenance and rehabilitation. Hyperbaric oxygen therapy can increase blood oxygen tension, promote blood circulation, enhance drug absorption, and improve immunity, among other benefits. However, inhaling pure hyperbaric oxygen can cause vasoconstriction and a slower heart rate, partially affecting blood circulation. The fact that carbon dioxide promotes vasodilation is a well-established finding in medical research. Medical research also shows that carbon dioxide mixed with oxygen can both increase blood oxygen tension and prevent impaired blood circulation. However, for many years, effective methods for controlling the carbon dioxide content in carbon dioxide mixed oxygen have not been developed domestically or internationally. While pure oxygen inhalation leads to vasoconstriction and a slower heart rate, and carbon dioxide can promote vasodilation, excessive carbon dioxide levels can cause over-dilation, resulting in excessive oxygen intake and oxygen toxicity. Therefore, for safety reasons, both the medical and health industries currently use pure oxygen.

[0003] Therefore, how to safely use carbon dioxide mixed with oxygen in medical or healthcare procedures is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] This application provides a carbon dioxide mixed oxygen therapy device to solve the technical problem of how to safely use carbon dioxide mixed oxygen in medical or healthcare procedures in the prior art.

[0005] This application provides a carbon dioxide mixed oxygen therapy device, including: a mask, a mixed gas preparation box, an oxygen supply regulating device, and an air intake and exhaust assembly;

[0006] The oxygen supply regulating device is connected to the mixed gas preparation box. The oxygen supply regulating device supplies oxygen to the mixed gas preparation box and adjusts the partial pressure of carbon dioxide in the mixed gas preparation box by adjusting the preset oxygen supply amount.

[0007] The mixed gas preparation box is used to mix the oxygen supplied by the oxygen supply regulating device with a preset amount of oxygen and the corresponding partial pressure value of carbon dioxide to form a mixed gas;

[0008] The hood can accommodate a face and then allow mixed gas to enter and exhaust waste gas to exit; the waste gas includes at least oxygen and carbon dioxide; the hood is connected to the mixed gas preparation box through the intake and exhaust assembly, the mixed gas generated by the mixed gas preparation box is input into the hood through the intake and exhaust assembly, and the oxygen and carbon dioxide discharged from the hood are delivered to the mixed gas preparation box;

[0009] The carbon dioxide in the gas mixing chamber is supplied by the carbon dioxide discharged from the hood. The carbon dioxide discharged from the hood is recycled between the gas mixing chamber and the hood to maintain the partial pressure of carbon dioxide in the gas mixture at 20-35 mmHg.

[0010] Optionally, the oxygen supply regulating device includes: an oxygen supply bellows, an oxygen supply flow meter, an oxygen supply shut-off valve, and an oxygen cylinder;

[0011] The oxygen supply corrugated pipe is connected between the oxygen cylinder and the mixed gas preparation box, and the oxygen supply corrugated pipe delivers oxygen from the oxygen cylinder to the mixed gas preparation box.

[0012] The oxygen supply flow meter is installed on the oxygen supply bellows and is used to adjust the partial pressure of carbon dioxide in the mixed gas preparation box by adjusting the preset oxygen supply amount.

[0013] The oxygen supply shut-off valve is installed on the oxygen supply bellows and is located between the oxygen supply flow meter and the oxygen cylinder.

[0014] Optionally, the gas mixing chamber includes: a chamber body, a gas mixing chamber, and a telescopic airbag;

[0015] The gas mixing chamber is formed inside the housing and is used to mix the oxygen supplied by the oxygen supply regulating device with a preset amount of oxygen and the corresponding partial pressure value of carbon dioxide to form a mixed gas.

[0016] The telescopic airbag is located inside the box, and one end of the telescopic airbag communicates with the gas mixing chamber to balance the pressure of the gas mixing chamber according to the gas volume in the gas mixing chamber;

[0017] When the hood inhales through the air intake and exhaust assembly, the telescopic airbag contracts; when the hood exhales through the air intake and exhaust assembly, the telescopic airbag expands.

[0018] Optionally, the gas mixing box further includes a first connection interface and a second connection interface disposed on the box body;

[0019] The first connection interface is connected to the oxygen supply regulating device to obtain oxygen provided by the oxygen supply regulating device;

[0020] The second connection interface is connected to the intake and exhaust assembly to obtain the oxygen and carbon dioxide discharged by the intake and exhaust assembly, and to input the mixed gas generated by the mixed gas preparation box into the intake and exhaust assembly.

[0021] Optionally, it also includes: an oxygen balancing device, which is connected to the gas mixing chamber, and is used to discharge oxygen from the gas mixing chamber and balance the pressure of the gas mixing chamber.

[0022] Optionally, the oxygen balancing device includes an airbag balancing component and an oxygen balancing component;

[0023] The airbag balancing assembly is connected to the gas mixing chamber to balance the pressure in the gas mixing chamber;

[0024] The oxygen extraction component is connected to the airbag balancing component and is used to receive the oxygen transmitted by the airbag balancing component and expel the oxygen.

[0025] Optionally, the airbag balancing assembly includes balancing tubing and an airbag valve;

[0026] The first end of the balancing pipeline is connected to the third connection interface of the gas mixing box; the second end of the balancing pipeline is connected to the airbag valve; the diameter of the pipeline gradually increases from the first end to the second end.

[0027] When the hood inhales through the air intake and exhaust assembly, the telescopic airbag contracts, and the airbag valve supplies oxygen to the gas mixing chamber through the balance pipe; when the hood exhales through the air intake and exhaust assembly, the telescopic airbag expands, and the airbag valve absorbs oxygen to the gas mixing chamber through the balance pipe.

[0028] Optionally, the oxygen venting assembly includes an oxygen venting pipeline and an oxygen venting control valve;

[0029] The oxygen discharge pipeline is connected between the balance pipeline and the airbag valve, and under the control of the airbag valve, the oxygen released by the balance pipeline is transmitted to the oxygen discharge pipeline.

[0030] The oxygen release control valve is installed on the oxygen release pipeline.

[0031] Optionally, the intake and exhaust assembly includes: a first intake port, a first exhaust port, a second exhaust port, a second intake port, a first connecting hose, and a second connecting hose;

[0032] The first air intake port is connected to the air-fuel mixture preparation box;

[0033] The first exhaust port is connected to the gas mixture preparation box;

[0034] The second air inlet is connected to the intake valve port of the three-way valve of the cover;

[0035] The second exhaust port is connected to the exhaust valve port of the three-way valve of the cover;

[0036] The first connecting hose is connected to the first air intake port and the second air intake port;

[0037] The second connecting hose is connected to the first exhaust port and the second exhaust port.

[0038] Optionally, a gas detection device is provided in the mixed gas preparation box to detect the preset oxygen supply and carbon dioxide volume in forming the mixed gas.

[0039] Compared with the prior art, this application has the following advantages:

[0040] This application provides a carbon dioxide mixed oxygen therapy device, comprising: a mask, a mixed gas preparation box, an oxygen supply regulating device, and an intake and exhaust assembly. The oxygen supply regulating device is connected to the mixed gas preparation box, supplying oxygen to the box and adjusting the partial pressure of carbon dioxide in the box by adjusting a preset oxygen supply amount. The mixed gas preparation box is used to mix the preset oxygen supply amount provided by the oxygen supply regulating device with carbon dioxide at a corresponding partial pressure to form a mixed gas. The mask, after accommodating the face, allows the mixed gas to pass through and exhausts waste gas. The waste gas includes at least oxygen and carbon dioxide. The mask is connected to the mixed gas preparation box via the intake and exhaust assembly, which inputs the mixed gas generated in the preparation box into the mask and delivers the oxygen and carbon dioxide exhausted from the mask to the preparation box. The carbon dioxide in the preparation box is supplied by the carbon dioxide exhausted from the mask, which is recycled between the preparation box and the mask to maintain the partial pressure of carbon dioxide in the mixed gas at 20-35 mmHg.

[0041] This application can be understood as follows: Oxygen is supplied to the gas mixing chamber via an oxygen supply regulator, and the partial pressure of carbon dioxide in the mixing chamber is adjusted by regulating the preset oxygen supply. Exhaled carbon dioxide is circulated between the mixing chamber and the hood through a mask, maintaining the partial pressure of carbon dioxide in the mixed gas at 20-35 mmHg. This achieves the 2-3.5% carbon dioxide control level required for medical research, thus addressing the issue of safe use of carbon dioxide mixed oxygen in medical or healthcare procedures. Attached Figure Description

[0042] Figure 1This is a schematic diagram of the structure of a carbon dioxide mixed oxygen therapy device provided in the first embodiment of this application.

[0043] Figure label:

[0044] 1. Cover body, 2. Mixed gas preparation box, 21. Telescopic airbag, 22. Oxygen supply regulating device, 3. Oxygen supply corrugated pipe, 31. Oxygen supply flow meter, 32. Oxygen supply shut-off valve, 33. Inlet and outlet assembly, 4. First connecting hose, 41. Second connecting hose, 42. Airbag balance assembly, 5. Balance pipeline, 51. Airbag valve, 52. Oxygen exhaust assembly, 6. Oxygen exhaust pipeline, 61. Oxygen exhaust control valve, 62. Detailed Implementation

[0045] Many specific details are set forth in the following description to provide a full understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this application; therefore, this application is not limited to the specific embodiments disclosed below.

[0046] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] Oxygen is an indispensable gas for life. Hyperbaric oxygen therapy is an essential treatment for cardiovascular and cerebrovascular diseases and for critically ill patients. It is also a good method for health maintenance and rehabilitation. Hyperbaric oxygen therapy can increase blood oxygen tension, promote blood circulation, enhance drug absorption, and improve immunity, among other benefits. However, inhaling pure hyperbaric oxygen can cause vasoconstriction and a slower heart rate, partially affecting blood circulation. Carbon dioxide can promote vasodilation, a conclusion established by medical research. Medical research also shows that carbon dioxide mixed with oxygen can both increase blood oxygen tension and prevent impaired blood circulation. However, for many years, effective methods for controlling the carbon dioxide content in carbon dioxide mixed oxygen have not been achieved domestically or internationally. While pure oxygen inhalation leads to vasoconstriction and a slower heart rate, and carbon dioxide can promote vasodilation, excessive carbon dioxide levels can cause excessive vasodilation, resulting in excessive oxygen intake and oxygen toxicity.

[0049] Accordingly, this application provides a carbon dioxide mixed oxygen therapy device, comprising: a mask, a mixed gas preparation box, an oxygen supply regulating device, and an intake and exhaust assembly. The oxygen supply regulating device is connected to the mixed gas preparation box, supplying oxygen to the mixed gas preparation box and adjusting the partial pressure of carbon dioxide in the mixed gas preparation box by adjusting a preset oxygen supply amount. The mixed gas preparation box is used to mix the preset oxygen supply amount provided by the oxygen supply regulating device with carbon dioxide at a corresponding partial pressure to form a mixed gas. The mask can accommodate the face and then allow the mixed gas to pass through and exhaust waste gas to be discharged. The waste gas includes at least oxygen and carbon dioxide. The mask is connected to the mixed gas preparation box via the intake and exhaust assembly, which inputs the mixed gas generated in the mixed gas preparation box into the mask and delivers the oxygen and carbon dioxide discharged from the mask to the mixed gas preparation box. The carbon dioxide in the mixed gas preparation box is supplied by the carbon dioxide discharged from the mask, and the carbon dioxide discharged from the mask is recycled between the mixed gas preparation box and the mask to maintain the partial pressure of carbon dioxide in the mixed gas at 20-35 mmHg.

[0050] This application can be understood as follows: Oxygen is supplied to the gas mixing chamber via an oxygen supply regulator, and the partial pressure of carbon dioxide in the mixing chamber is adjusted by regulating the preset oxygen supply. Exhaled carbon dioxide is circulated between the mixing chamber and the hood through a mask, maintaining the partial pressure of carbon dioxide in the mixed gas at 20-35 mmHg. This achieves the 2-3.5% carbon dioxide control level required for medical research, thus addressing the issue of safe use of carbon dioxide mixed oxygen in medical or healthcare procedures.

[0051] The carbon dioxide mixed oxygen therapy device provided in this application will now be described in detail with reference to the accompanying drawings. Figure 1This is a schematic diagram of a carbon dioxide mixed oxygen therapy device provided in an embodiment of this application.

[0052] like Figure 1 As shown, this application provides a carbon dioxide mixed oxygen therapy device, including: a mask 1, a mixed gas preparation box 2, an oxygen supply regulating device 3, and an intake and exhaust assembly 4. The oxygen supply regulating device 3 is connected to the mixed gas preparation box 2, supplying oxygen to the mixed gas preparation box 2 and adjusting the partial pressure of carbon dioxide in the mixed gas preparation box 2 by adjusting the preset oxygen supply amount. The mixed gas preparation box 2 is used to mix the preset oxygen supply amount provided by the oxygen supply regulating device 3 with the corresponding partial pressure of carbon dioxide to form a mixed gas. The mask 1 can accommodate the face and allow the mixed gas to pass through and exhaust waste gas to be discharged. The exhaust gas includes at least oxygen and carbon dioxide. The mask 1 is connected to the mixed gas preparation box 2 via the intake and exhaust assembly 4, which inputs the mixed gas generated by the mixed gas preparation box 2 into the mask 1 and delivers the oxygen and carbon dioxide discharged from the mask 1 to the mixed gas preparation box 2. The carbon dioxide in the gas mixing chamber 2 is supplied by the carbon dioxide discharged from the hood 1. The carbon dioxide discharged from the hood 1 is recycled between the gas mixing chamber 2 and the hood 1 to maintain the partial pressure of carbon dioxide in the gas mixture at 20-35 mmHg.

[0053] Specifically, in this embodiment, the oxygen supply regulating device 3 includes: an oxygen supply bellows 31, an oxygen supply flow meter 32, an oxygen supply shut-off valve 33, and an oxygen cylinder. The oxygen supply bellows 31 connects the oxygen cylinder and the mixed gas preparation tank 2, delivering oxygen from the oxygen cylinder to the mixed gas preparation tank 2. The oxygen supply flow meter 32 is mounted on the oxygen supply bellows 31 and is used to adjust the partial pressure of carbon dioxide in the mixed gas preparation tank 2 by adjusting the preset oxygen supply rate. In one example, the oxygen supply flow meter 32 adjusts the partial pressure of carbon dioxide in the mixed gas preparation tank 2 by adjusting the preset oxygen supply rate as follows: In one example, when the preset oxygen supply rate reaches 8 liters per minute, the partial pressure of carbon dioxide in the mixed gas preparation tank 2 reaches 35 mmHg. In another example, when the preset oxygen supply rate reaches 10 liters per minute, the partial pressure of carbon dioxide in the mixed gas preparation tank 2 reaches 30 mmHg. In one example, when the oxygen supply flow meter 32 adjusts the preset oxygen supply rate to 12 liters per minute, the partial pressure of carbon dioxide in the mixed gas preparation box 2 reaches 25 mmHg. In another example, this is determined based on carbon dioxide monitoring data. When the carbon dioxide monitoring data and the preset oxygen supply rate are basically stable, the partial pressure of carbon dioxide can be confirmed using the preset oxygen supply rate as an indicator. That is, the partial pressure of carbon dioxide can be controlled by adjusting the oxygen supply flow meter 32. According to application research and comparison, after comparing multiple carbon dioxide detection monitoring data with the preset oxygen supply rate, the error value formed by controlling the carbon dioxide partial pressure value through the oxygen supply flow meter 32 is extremely small and will not exceed the safe range.

[0054] An oxygen supply shut-off valve 33 is installed on the oxygen supply bellows 31 and is located between the oxygen supply flow meter 32 and the oxygen cylinder. The oxygen supply shut-off valve 33 can stop the oxygen cylinder from supplying oxygen to the mixed gas preparation box 2 as needed.

[0055] In this embodiment, the gas mixing chamber 2 includes a chamber body 21, a gas mixing chamber, and a telescopic airbag 22. In one example, the gas mixing chamber is formed inside the chamber body 21, and its walls are the walls of the chamber body 21. The gas mixing chamber is used to mix a preset amount of oxygen provided by the oxygen supply regulating device 3 with a corresponding partial pressure value of carbon dioxide to form a mixed gas. The telescopic airbag 22 is located inside the chamber body 21, and one end of the telescopic airbag 22 communicates with the gas mixing chamber to balance the pressure in the gas mixing chamber according to the gas volume. When the hood 1 inhales through the air intake and exhaust assembly 4, the telescopic airbag 22 contracts. When the hood 1 exhales through the air intake and exhaust assembly 4, the telescopic airbag 22 expands.

[0056] In one example, the telescopic airbag 22 includes an airbag, a connecting rod, a sliding rod, and a sliding shaft. One end of the telescopic airbag 22 communicates with a gas mixing chamber to deliver the mixed gas from the gas mixing chamber to the airbag and to exit the mixed gas from the airbag into the gas mixing chamber. The sliding rod is disposed inside the airbag, and the sliding shaft is fitted onto the sliding rod and can slide on it. One end of the connecting rod is connected to the airbag, and the other end of the connecting rod is connected to the sliding shaft. When the airbag contracts, the opening angle of the connecting rod relative to the sliding rod decreases; when the airbag expands, the opening angle of the connecting rod relative to the sliding rod increases.

[0057] In one example, the gas mixture preparation box 2 further includes a first connection interface and a second connection interface disposed on the box body 21. The first connection interface is connected to the oxygen supply regulator 3 to obtain oxygen supplied by the oxygen supply regulator 3. Specifically, the first connection interface is connected to the oxygen supply bellows 31 of the oxygen supply regulator 3. The second connection interface is connected to the intake and exhaust assembly 4 to obtain oxygen and carbon dioxide discharged from the intake and exhaust assembly 4, and to input the mixed gas generated by the gas mixture preparation box 2 into the intake and exhaust assembly 4.

[0058] In this embodiment, to further balance the pressure of the mixed gas in the gas mixing chamber 2 and to remove excess oxygen from the gas mixing chamber 2, an oxygen purging balancing device is further included. This oxygen purging balancing device is connected to the gas mixing chamber 2 and is used to remove oxygen from the gas mixing chamber 2 and balance the pressure in the gas mixing chamber. Specifically, in one example, the oxygen purging balancing device includes an airbag balancing assembly 5 and an oxygen purging assembly 6. The airbag balancing assembly 5 is connected to the gas mixing chamber 2 to balance the pressure in the gas mixing chamber. Specifically, the airbag balancing assembly 5 includes a balancing pipe 51 and an airbag valve 52. The first end of the balancing pipe 51 is connected to the third connection interface of the gas mixing chamber 2, and the second end of the balancing pipe 51 is connected to the airbag valve 52. In one example, the pipe diameter of the balancing pipe 51 gradually increases from the first end to the second end. When the cover 1 draws air in through the air intake and exhaust assembly 4, the telescopic airbag 22 contracts, and the airbag valve 52 supplies oxygen to the gas mixing chamber through the balancing pipe 51. When the hood 1 exhales through the air intake and exhaust assembly 4, the telescopic airbag 22 inflates, and the airbag valve 52 absorbs oxygen into the gas mixing chamber through the balance pipe 51.

[0059] It should be noted that the airbag balancing component 5 only activates when the oxygen level in the gas mixture preparation box 2 exceeds a preset threshold. This preset threshold includes a preset oxygen supply value.

[0060] The oxygen degassing assembly 6 is connected to the airbag balancing assembly 5 and is used to receive oxygen transmitted by the airbag balancing assembly 5 and expel the oxygen. Specifically, the oxygen degassing assembly 6 includes an oxygen degassing pipeline 61 and an oxygen degassing control valve 62. The oxygen degassing pipeline 61 is connected between the balancing pipeline 51 and the airbag valve 52, and under the control of the airbag valve 52, it transmits the oxygen released from the balancing pipeline 51 to the oxygen degassing pipeline 61. The oxygen degassing control valve 62 is located on the oxygen degassing pipeline 61. It should be noted that the oxygen in the balancing pipeline 51 and the airbag valve 52 will only connect to the oxygen degassing pipeline 61 when the flow rate exceeds a preset flow rate. This preset flow rate is set according to actual needs.

[0061] In this embodiment, a gas detection device is also provided to detect the preset oxygen supply and carbon dioxide volume of the mixed gas. The gas detection device is installed in the mixed gas preparation box 2 and is used to detect the preset oxygen supply and carbon dioxide volume of the mixed gas.

[0062] In this embodiment, the carbon dioxide in the gas mixing chamber 2 is supplied by the carbon dioxide discharged from the shroud 1. The carbon dioxide discharged from the shroud 1 is recycled between the gas mixing chamber 2 and the shroud 1 to maintain the partial pressure of carbon dioxide in the mixed gas at 20-35 mmHg. The shroud 1 is connected to the gas mixing chamber 2 via an intake / exhaust assembly 4. The intake / exhaust assembly 4 inputs the mixed gas generated in the gas mixing chamber 2 into the shroud 1 and delivers the oxygen and carbon dioxide discharged from the shroud 1 to the gas mixing chamber 2. The intake / exhaust assembly 4 includes: a first intake port, a first exhaust port, a second exhaust port, a second intake port, a first connecting hose 41, and a second connecting hose 42. Specifically, the first intake port is connected to the second connecting port of the gas mixing chamber 2, the first exhaust port is connected to the second connecting port of the gas mixing chamber 2, the second intake port is connected to the intake port of the three-way valve of the shroud 1, and the second exhaust port is connected to the exhaust port of the three-way valve of the shroud 1. The first connecting hose 41 is connected to the first air intake port and the second air intake port, and the second connecting hose 42 is connected to the first exhaust port and the second exhaust port.

[0063] During inhalation, the inhalation port of the three-way valve of hood 1 opens, and the exhaust port of the three-way valve of hood 1 closes. Oxygen in the gas mixture preparation box 2 is delivered to hood 1 through the second connection port, the first inhalation port, the first connecting hose 41, the second inhalation port, and the inhalation port of the three-way valve. During exhaust, the exhaust port of the three-way valve of hood 1 opens, and the inhalation port of the three-way valve of hood 1 closes. Oxygen and carbon dioxide in hood 1 are delivered to the gas mixture preparation box 2 through the exhaust port of the three-way valve, the second exhaust port, the second connecting hose 42, the first exhaust port, and the second connection port.

[0064] This application provides a carbon dioxide mixed oxygen therapy device, comprising: a mask 1, a mixed gas preparation box 2, an oxygen supply regulating device 3, and an intake and exhaust assembly 4. The oxygen supply regulating device 3 is connected to the mixed gas preparation box 2, supplying oxygen to the mixed gas preparation box 2 and adjusting the partial pressure of carbon dioxide in the mixed gas preparation box 2 by adjusting a preset oxygen supply amount. The mixed gas preparation box 2 is used to mix the preset oxygen supply amount provided by the oxygen supply regulating device 3 with the corresponding partial pressure of carbon dioxide to form a mixed gas. The mask 1 can accommodate the face and allow the mixed gas to pass through and exhaust waste gas to be discharged. The exhaust gas includes at least oxygen and carbon dioxide. The mask 1 is connected to the mixed gas preparation box 2 via the intake and exhaust assembly 4, which inputs the mixed gas generated in the mixed gas preparation box 2 into the mask 1 and delivers the oxygen and carbon dioxide discharged from the mask 1 to the mixed gas preparation box 2. The carbon dioxide in the gas mixing chamber 2 is supplied by the carbon dioxide discharged from the hood 1. The carbon dioxide discharged from the hood 1 is recycled between the gas mixing chamber 2 and the hood 1 to maintain the partial pressure of carbon dioxide in the gas mixture at 20-35 mmHg.

[0065] This application can be understood as follows: oxygen is supplied to the gas mixing chamber 2 via the oxygen supply regulating device 3, and the partial pressure of carbon dioxide in the gas mixing chamber 2 is adjusted by adjusting the preset oxygen supply. Furthermore, exhaled carbon dioxide is circulated between the gas mixing chamber 2 and the chamber 1 via the hood 1, maintaining the partial pressure of carbon dioxide in the mixed gas at 20-35 mmHg. This achieves the 2-3.5% carbon dioxide control level required for medical research, thus addressing the issue of safe use of carbon dioxide mixed oxygen in medical or healthcare procedures.

[0066] It should be noted that although several structures, components, or units for implementing the relevant functions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to the specific embodiments of this application, the features and functions of two or more structures, components, or units described above can be embodied in one structure, component, or unit. Conversely, the features and functions of one structure, component, or unit described above can be further divided and embodied by multiple components, structures, or units.

[0067] Furthermore, although the various components of the components or apparatus in this application and the mounting arrangements between them are described in a specific order in the accompanying drawings, this does not require or imply that the components or apparatus must be designed according to that specific component or mounting arrangement, or that all the components shown must be included to achieve the desired result. Additional or alternative components may be omitted, multiple components may be combined into one component to achieve the corresponding function, and / or a component may be decomposed into multiple components to achieve the corresponding function, etc.

[0068] Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of this application. Therefore, the scope of protection of this application should be determined by the scope defined in the claims of this application.

Claims

1. A carbon dioxide mixed oxygen therapy device, characterized in that, include: The enclosure, gas mixture preparation box, oxygen supply regulating device, and intake and exhaust components; The oxygen supply regulating device is connected to the mixed gas preparation box. The oxygen supply regulating device supplies oxygen to the mixed gas preparation box and adjusts the partial pressure of carbon dioxide in the mixed gas preparation box by adjusting the preset oxygen supply amount. The mixed gas preparation box is used to mix the oxygen supplied by the oxygen supply regulating device with a preset amount of oxygen and the corresponding partial pressure value of carbon dioxide to form a mixed gas; The hood can accommodate a face and then allow mixed gas to enter and exhaust waste gas to exit; the waste gas includes at least oxygen and carbon dioxide; the hood is connected to the mixed gas preparation box through the intake and exhaust assembly, the mixed gas generated by the mixed gas preparation box is input into the hood through the intake and exhaust assembly, and the oxygen and carbon dioxide discharged from the hood are delivered to the mixed gas preparation box; The carbon dioxide in the gas mixing chamber is supplied by the carbon dioxide discharged from the hood. The carbon dioxide discharged from the hood is recycled between the gas mixing chamber and the hood to maintain the partial pressure of carbon dioxide in the gas mixture at 20-35 mmHg.

2. The carbon dioxide mixed oxygen therapy device according to claim 1, characterized in that, The oxygen supply regulating device includes: an oxygen supply bellows, an oxygen supply flow meter, an oxygen supply shut-off valve, and an oxygen cylinder. The oxygen supply corrugated pipe is connected between the oxygen cylinder and the mixed gas preparation box, and the oxygen supply corrugated pipe delivers oxygen from the oxygen cylinder to the mixed gas preparation box. The oxygen supply flow meter is installed on the oxygen supply bellows and is used to adjust the partial pressure of carbon dioxide in the mixed gas preparation box by adjusting the preset oxygen supply amount. The oxygen supply shut-off valve is installed on the oxygen supply bellows and is located between the oxygen supply flow meter and the oxygen cylinder.

3. The carbon dioxide mixed oxygen therapy device according to claim 1, characterized in that, The gas mixing chamber includes: a chamber body, a gas mixing chamber, and a telescopic airbag; The gas mixing chamber is formed inside the housing and is used to mix the oxygen supplied by the oxygen supply regulating device with a preset amount of oxygen and the corresponding partial pressure value of carbon dioxide to form a mixed gas. The telescopic airbag is located inside the box, and one end of the telescopic airbag communicates with the gas mixing chamber to balance the pressure of the gas mixing chamber according to the gas volume in the gas mixing chamber; When the hood inhales through the air intake and exhaust assembly, the telescopic airbag contracts; when the hood exhales through the air intake and exhaust assembly, the telescopic airbag expands.

4. The carbon dioxide mixed oxygen therapy device according to claim 3, characterized in that, The gas mixing box also includes a first connection interface and a second connection interface disposed on the box body; The first connection interface is connected to the oxygen supply regulating device to obtain oxygen provided by the oxygen supply regulating device; The second connection interface is connected to the intake and exhaust assembly to obtain the oxygen and carbon dioxide discharged by the intake and exhaust assembly, and to input the mixed gas generated by the mixed gas preparation box into the intake and exhaust assembly.

5. The carbon dioxide mixed oxygen therapy device according to claim 4, characterized in that, Also includes: An oxygen balancing device is connected to the gas mixing chamber. The oxygen balancing device is used to discharge oxygen from the gas mixing chamber and to balance the pressure in the gas mixing chamber.

6. The carbon dioxide mixed oxygen therapy device according to claim 5, characterized in that, The oxygen balancing device includes an airbag balancing component and an oxygen balancing component; The airbag balancing assembly is connected to the gas mixing chamber to balance the pressure in the gas mixing chamber; The oxygen extraction component is connected to the airbag balancing component and is used to receive the oxygen transmitted by the airbag balancing component and expel the oxygen.

7. The carbon dioxide mixed oxygen therapy device according to claim 6, characterized in that, The airbag balancing assembly includes balancing tubing and an airbag valve; The first end of the balancing pipeline is connected to the third connection interface of the gas mixing box; the second end of the balancing pipeline is connected to the airbag valve; the diameter of the pipeline gradually increases from the first end to the second end. When the hood inhales through the air intake and exhaust assembly, the telescopic airbag contracts, and the airbag valve supplies oxygen to the gas mixing chamber through the balance pipe; when the hood exhales through the air intake and exhaust assembly, the telescopic airbag expands, and the airbag valve absorbs oxygen to the gas mixing chamber through the balance pipe.

8. The carbon dioxide mixed oxygen therapy device according to claim 7, characterized in that, The oxygen degassing assembly includes an oxygen degassing pipeline and an oxygen degassing control valve; The oxygen discharge pipeline is connected between the balance pipeline and the airbag valve, and under the control of the airbag valve, the oxygen released by the balance pipeline is transmitted to the oxygen discharge pipeline. The oxygen release control valve is installed on the oxygen release pipeline.

9. The carbon dioxide mixed oxygen therapy device according to claim 1, characterized in that, The intake and exhaust assembly includes: a first intake port, a first exhaust port, a second exhaust port, a second intake port, a first connecting hose, and a second connecting hose; The first air intake port is connected to the air-fuel mixture preparation box; The first exhaust port is connected to the gas mixture preparation box; The second air inlet is connected to the intake valve port of the three-way valve of the cover; The second exhaust port is connected to the exhaust valve port of the three-way valve of the cover; The first connecting hose is connected to the first air intake port and the second air intake port; The second connecting hose is connected to the first exhaust port and the second exhaust port.

10. The carbon dioxide mixed oxygen therapy device according to claim 1, characterized in that, A gas detection device is installed in the mixed gas preparation box to detect the preset oxygen supply and carbon dioxide volume in the mixed gas.

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