A double oxygen breathing device

Abstract

The present invention relates to the technical field of medical devices, and specifically discloses a dual oxygen inhalation device, including a three-way connection and two flow meters installed on the three-way connection. The output end of each flow meter is used to connect a humidification bottle or a nebulizer. The output end of the nebulizer is installed with an air outlet pipe. The air outlet pipe is provided with a buffer bag protruding outward, and the buffer bag is elastic. The air outlet pipe is also provided with an air inlet cover, which covers the buffer bag. A closed space is formed between the air inlet cover and the buffer bag. The buffer bag is connected to the air outlet pipe. A first one-way air inlet valve is installed on the buffer bag, and a second one-way air inlet valve is installed on the air inlet cover. The first one-way air inlet valve is used for gas to enter the buffer bag from the air inlet cover, and the second one-way air inlet valve is used for gas to enter the air inlet cover from the outside. This scheme is used to solve the problem that when the existing dual oxygen inhalation device is used for atomization, the pressure of the air outlet pipe increases when the atomized gas is inhaled, which brings impact to the pharynx.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a double oxygen absorption device. Background Art

[0002] In the prior art, with the advancement of medical technology, oxygen inhalation for patients has become more and more convenient. In the ward, each bed is provided with an oxygen outlet connector at the corresponding position of the room, and the oxygen outlet connector is connected to the hospital's oxygen supply system. When the patient needs oxygen inhalation, the oxygen inhaler containing a humidifier bottle and a flow meter is directly installed on the oxygen outlet connector. The oxygen from the oxygen supply system first enters the flow meter, then enters the humidifier bottle, and then is discharged from the outlet of the humidifier bottle. The outlet of the humidifier bottle is connected to a nasal suction catheter or a mask tube to facilitate the patient to inhale oxygen through the nose or through a mask.

[0003] However, some patients may need to inhale oxygen through both nasal passages and masks at the same time. Some patients may need more oxygen than the oxygen outlet connector. There is a three-way connector on the market that connects two flow meters, and each flow meter is connected to a humidification bottle. Such a dual oxygen absorber can facilitate oxygen outlets at two locations, thereby increasing the amount of oxygen supplied, such as the dual-head oxygen inhalation device with patent announcement number CN218793474U.

[0004] In actual medical use, there are still some patients who need both oxygen inhalation and nebulization. During nebulization, in order to ensure the nebulization effect, the patient is often required to hold the outlet tube of the nebulizer with his mouth and complete the nebulization under the adjustment of the breathing frequency of inhaling through the mouth and exhaling through the nose, resulting in the inability to inhale oxygen alone during the nebulization process; in the prior art, there are references to removing the humidification bottle of the double-head oxygen inhalation device (also called double oxygen inhalation device) and directly sending compressed oxygen to the nebulizer through the flow meter, such as the replaceable oxygen inhalation and nebulization integrated device with patent announcement number CN208770597U, in which the compressed oxygen from the oxygen supply system through the flow meter provides a power source for the atomization of the liquid medicine in the nebulizer, so that the nebulized gas contains a large amount of oxygen, meeting the patient's needs for both nebulization and oxygen inhalation. However, this method has the following problems:

[0005] First, the compressed gas flow rate required for nebulized medicine is as low as 6-8L / min. For antibiotics with higher viscosity, the compressed gas flow rate reaches 10-12 L / min. When general patients inhale oxygen, the nasal oxygen flow rate is about 2L / min, and the mask oxygen flow rate is about 4L / min. The compressed gas flow rate required for nebulization is much greater than the flow rate when inhaling oxygen, resulting in a high oxygen concentration in the nebulized gas and a rapid increase in the user's oxygen saturation, which can easily lead to the relief of hypoxemia and the increase of CO2 retention, causing paralysis of the respiratory center.

[0006] Second, oral nebulization improves the absorption of drugs, but in the process of inhaling atomized gas through the mouth and nose, the atomized gas is actually inhaled intermittently, while the atomization is continuous, resulting in an increase in atomized gas and higher pressure in the exhaust pipe during nasal exhalation. When the user switches from nasal exhalation to oral inhalation, the atomized gas with increased pressure will impact the pharynx, causing discomfort in the user's pharynx and even causing choking during the nebulization process, which in turn reduces the effect of atomization. Summary of the invention

[0007] The present invention is intended to provide a double oxygen inhalation device to solve the problem that when the existing double oxygen inhalation device is used for atomization, the pressure of the air outlet pipe increases and causes impact on the pharynx when the atomized gas is inhaled.

[0008] In order to achieve the above object, the present invention adopts the following technical scheme:

[0009] A double oxygen inhalation device comprises a three-way connection and two flow meters installed on the three-way connection, wherein the output end of each flow meter is used to connect a humidification bottle or a nebulizer, an air outlet pipe is installed on the output end of the nebulizer, an outwardly protruding buffer bag is provided on the air outlet pipe, and the buffer bag has elasticity, an air inlet cover is also provided on the air outlet pipe, the air inlet cover covers the buffer bag, a closed space is formed between the air inlet cover and the buffer bag, the buffer bag is connected with the air outlet pipe, a first one-way air inlet valve is installed on the buffer bag, and a second one-way air inlet valve is installed on the air inlet cover, the first one-way air inlet valve is used for gas to enter the buffer bag from the air inlet cover, and the second one-way air inlet valve is used for gas to enter the air inlet cover from the outside.

[0010] The principles and advantages of the present invention are:

[0011] 1. In this solution, the buffer bag is connected to the air outlet pipe, so when the user exhales and the pressure in the air outlet pipe increases, the buffer bag bulges toward the outside of the air outlet pipe to provide a larger accommodation space for the atomized gas, reduce the air pressure in the air outlet pipe, and thus reduce the impact of the atomized gas on the user's pharynx when the user inhales, and reduce the probability of pharyngeal discomfort in oral atomization.

[0012] 2. This scheme arranges an air intake hood, a first one-way air intake valve and a second one-way air intake valve so that when the cushion bag swells, the space inside the air intake hood is squeezed, so that the pressure inside the air intake hood increases, and the gas in the air intake hood enters the cushion bag through the first one-way air intake valve; when the user inhales, the cushion bag restores its shape and shrinks relatively, the space inside the air intake hood increases and the pressure decreases, and the outside air enters the air intake hood through the second one-way air intake valve, preparing for the next time that air enters the cushion bag from the first one-way air intake valve; in this way, the outside air can enter the outlet pipe, thereby achieving the purpose of reducing the oxygen concentration in the outlet pipe.

[0013] Preferably, as an improvement, a reversing valve can be installed at the output end of the flow meter, the reversing valve has at least two output ports, a humidification bottle is installed on one of the output ports of the reversing valve, and an atomizer is installed on the other output port of the reversing valve.

[0014] Beneficial effect: Through the setting of the reversing valve, the scheme enables the compressed oxygen discharged by a flow meter to be used for atomization by the nebulizer, and can also switch the compressed oxygen to the humidification bottle during oxygen inhalation to facilitate the user to inhale oxygen, thereby improving the practicality of the scheme.

[0015] Preferably, as an improvement, the atomizer includes an atomizer seat and a nozzle, the atomizer seat is provided with a medicine liquid containing chamber and a medicine discharge channel, the nozzle is sleeved on the output end of the medicine discharge channel, a conical airway and an atomization channel are provided in the nozzle, and the atomization channel is connected to the air outlet pipe; a baffle is provided on the medicine discharge channel or the nozzle, the baffle separates the medicine discharge channel and the atomization channel, and the baffle is provided with a plurality of medicine discharge holes located on the same circumference; a main airway and a branch airway are also provided on the atomizer seat, one end of the branch airway is connected to the main airway and the other end is connected to the medicine liquid containing chamber, the input end of the main airway is connected to the output end of the flowmeter, and the output end of the main airway is connected to the conical airway, and the compressed gas ejected from the conical airway atomizes the medicine discharged from the medicine discharge hole in the atomization channel.

[0016] Beneficial effect: When this scheme is adopted, after the compressed oxygen discharged from the oxygen supply system through the flow meter enters the main airway, a part of it is directly sent to the conical airway for use as an atomization power source, and the other part of the compressed oxygen enters the medicine liquid containing chamber through the branch airway, so that the pressure in the medicine liquid containing chamber is increased, forcing the medicine liquid to pass through the medicine discharge channel and then be sprayed out from the medicine outlet holes on the blocking plate, so that the medicine liquid stays in the air for a longer time. At the same time, the compressed gas sprayed from the conical airway collides with the liquid sprayed from the medicine outlet holes in the atomization channel to atomize the medicine liquid.

[0017] The atomization method of this scheme disperses the medicine liquid into a spray from multiple medicine outlet holes, which prolongs the length of the medicine liquid moving in the atomization channel, thereby increasing the contact area with the compressed oxygen sprayed from the conical airway. Compared with the method of the prior art in which the compressed gas is located in the center and the medicine liquid is located outside the gas, the utilization rate of the compressed gas is improved, and the relative contact area between the medicine liquid and the compressed gas is increased, which is conducive to realizing the atomization of the medicine liquid at a smaller compressed gas flow rate, thereby reducing the concentration of oxygen in the atomized gas per unit time.

[0018] In addition, when adopting this scheme, the air channel provides power for the spraying of the medicine liquid on the one hand, and on the other hand, it also enables the medicine liquid in the medicine liquid holding chamber to be emptied under air pressure. Compared with the situation in the prior art where the medicine liquid cannot be fully used, this scheme can improve the utilization rate of the medicine liquid.

[0019] Preferably, as an improvement, the nozzle includes a seat body and a cover body, an air inlet cavity is provided between the seat body and the cover body, and the main air channel is connected to the air inlet cavity; both the seat body and the cover body are provided with conical surfaces, there is a spacing between the two conical surfaces, and the gap between the two conical surfaces forms a conical air channel of the nozzle, one of the conical surfaces is provided with a plurality of convex strips, the plurality of convex strips are evenly distributed along the circumference of the blocking plate, and airflow grooves are formed between adjacent convex strips, one end of the airflow grooves is connected to the air inlet cavity, and the other end is connected to the atomization channel.

[0020] Beneficial effect: This solution provides a plurality of convex strips on the conical surface, so that the conical airway forms multiple airflows that are ejected from the airflow grooves, which is beneficial to increasing the injection speed of compressed oxygen in the atomization channel.

[0021] Preferably, as an improvement, an angle exists between the convex strip and the generatrix of the conical surface.

[0022] Beneficial effect: This solution makes the airflow groove tilt relative to the generatrix of the conical surface, so that the gas ejected from the airflow groove is sprayed toward the atomization channel in an inclined manner. The projection of the airflow ejected from all the airflow grooves onto the blocking plate forms a closed ring, thereby ensuring that the airflow ejected from the airflow groove can be in complete contact with the medicine sprayed from multiple medicine outlet holes, thereby ensuring the reliability of atomization. In addition, because the airflow groove is tilted, the same medicine liquid can be contacted by the pressurized airflow ejected from multiple airflow grooves, which is beneficial to improving the atomization effect of the medicine liquid.

[0023] Preferably, as an improvement, the closer the airflow groove is to the atomization channel, the smaller the cross-sectional area is, so as to further improve the airflow impact strength at the air outlet end of the airflow groove.

[0024] Preferably, as an improvement, the seat body is fixedly connected to the medicine discharge channel, the cover body is sleeved on the seat body, the cover body and the seat body are threadedly connected, and an arc-shaped connecting hole is provided on the cover body, which can connect the main airway with the air inlet cavity.

[0025] Beneficial effect: When the airflow intensity of the conical airway needs to be adjusted, the distance between the two conical surfaces can be adjusted by screwing the cover body, thereby achieving the purpose of adjusting the conical airflow intensity. In addition, due to the arc-shaped structure of the arc-shaped connecting hole, the adjustment of the cover body does not affect the connection between the main airway and the air inlet cavity.

[0026] Preferably, as an improvement, one end of the air outlet pipe connected to the atomization channel has at least one curved section.

[0027] Beneficial effect: The setting of the curved section can prevent the un-atomized liquid medicine from being directly delivered to the user's oral cavity; on the other hand, the curved section can also form a buffer for the atomized gas, reducing the impact of the atomized gas on the user's pharynx.

[0028] Preferably, as an improvement, the blocking plate is fixed on the seat body. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the main structure of an embodiment of the present invention.

[0030] Figure 2 for Figure 1 Top view of the .

[0031] Figure 3 This is a cross-sectional view showing the structural relationship between the air outlet pipe, the air inlet cover, and the buffer bag according to an embodiment of the present invention.

[0032] Figure 4 It is a front cross-sectional view of an atomizer according to an embodiment of the present invention.

[0033] Figure 5 This is a schematic diagram of the three-dimensional structure of the nozzle upper seat body shown in an embodiment of the present invention.

[0034] Figure 6 This is a schematic diagram of the three-dimensional structure of the nozzle upper cover body shown in an embodiment of the present invention.

[0035] Figure 7 for Figure 6 Front cross-sectional view. DETAILED DESCRIPTION

[0036] The following is further described in detail through specific implementation methods:

[0037] The figure marks in the drawings of the specification include: three-way valve 1, flow meter 2, humidification bottle 3, nebulizer 45, nebulizer seat 4, medicine liquid holding chamber 41, medicine discharge channel 42, main air channel 43, branch air channel 44, nozzle 5, conical air channel 50, nebulizer channel 500, seat body 51, blocking plate 511, medicine outlet hole 512, conical surface 513, convex strip 514, air flow groove 515, cover body 52, arc-shaped connecting hole 521, reversing valve 6, air outlet pipe 7, curved section 71, buffer bag 8, air inlet cover 9, first one-way air inlet valve 81, second one-way air inlet valve 91.

[0038] The embodiment is basically as shown in the attached Figures 1 to 7 shown.

[0039] Combination Figure 1 and Figure 2A dual oxygen inhalation device includes a three-way valve 1, two flowmeters 2 installed on the three-way valve 1, and the output end of each flowmeter 2 is used to connect a humidifier bottle 3 or a nebulizer 45. In this embodiment, a humidifier bottle 3 is installed at the output end of one of the flowmeters 2, and a reversing valve 6 is installed at the output section of the other flowmeter 2. The reversing valve 6 is a two-position three-way valve. The inlet end of the reversing valve 6 is fixedly connected to the output end of the corresponding flowmeter 2. One of the two output ports of the reversing valve 6 is connected to the humidifier bottle 3, and the other is connected to the nebulizer 45. Through the combination of the three-way valve 1, the flowmeter 2, the reversing valve 6, the humidifier bottle 3 and the nebulizer 45, the dual oxygen supply mode of the humidifier bottle 3 + the humidifier bottle 3 can be realized to meet the needs of the same patient for nasal oxygen inhalation and mask oxygen inhalation, or to meet the needs of two different patients for single-mode oxygen inhalation respectively; the humidifier bottle 3 + atomization mode can also be realized to meet the single-mode oxygen inhalation demand of one patient and the atomization demand of another patient using oxygen as a compressed gas source. Furthermore, since the flow meter 2 itself can adjust the flow rate to zero, the dual oxygen inhalation device can also be used as a single humidified oxygen inhalation device or a single nebulized liquid medicine device.

[0040] Combination Figure 3 An outlet pipe 7 is installed at the output end of the atomizer 45, and a buffer bag 8 protruding outward is fixedly connected to the outlet pipe 7. The buffer bag 8 is elastic. An air inlet cover 9 is also fixed to the outlet pipe 7 by a threaded connection. The air inlet cover 9 covers the buffer bag 8. A closed space is formed between the air inlet cover 9 and the buffer bag 8. The buffer bag 8 is connected to the outlet pipe 7. A first one-way air inlet valve 81 is installed on the buffer bag 8, and a second one-way air inlet valve is installed on the air inlet cover 9. The first one-way air inlet valve 81 is used for gas to enter the buffer bag 8 from the air inlet cover 9, and the second one-way air inlet valve is used for gas to enter the air inlet cover 9 from the outside. The air outlet pipe 7 is designed with a buffer bag 8, an air inlet hood 9, a first one-way air inlet valve 81 and a second one-way air inlet valve, so that during the atomization process, when the user inhales the atomized gas, the buffer bag 8 shrinks, the enclosed space in the air inlet hood 9 becomes larger, the pressure in the enclosed space decreases, and the outside air enters the air inlet hood 9 through the second one-way air inlet valve; when the user exhales, the pressure in the air outlet pipe 7 increases, the buffer bag 8 swells, forcing the enclosed space in the air inlet hood 9 to become smaller and the pressure to increase, and the air in the air inlet hood 9 enters the air outlet pipe 7 through the first one-way air inlet valve 81 to reduce the oxygen content in the atomized gas in the air outlet pipe 7 and reduce the oxygen concentration of the atomized gas.

[0041] In addition, the buffer bag 8 buffers the atomized gas that cannot be discharged in time in the air outlet pipe 7, reduces the impact of the atomized gas on the pharynx when the user adopts the oral inhalation mode, and reduces the discomfort of the user's pharynx.

[0042] This embodiment also optimizes and improves the atomizer 45, as follows:

[0043] Combination Figures 4 to 7The atomizer 45 includes an atomizer seat 4 and a nozzle 5 fixed on the atomizer seat 4. The atomizer seat 4 is processed with a liquid medicine receiving chamber 41 and a medicine discharge channel 42. A plug is installed on the top of the liquid medicine receiving chamber 41. Opening the plug can facilitate the addition of medicine to the liquid medicine receiving chamber 41; the medicine discharge channel 42 is connected to the bottom of the liquid medicine receiving chamber 41; the nozzle 5 is sleeved on the output end of the medicine discharge channel 42, and a conical airway 50 and an atomization channel 500 are provided in the nozzle 5. The atomization channel 500 is fixedly connected to the air outlet pipe 7; a blocking plate 511 is fixed on the nozzle 5, and the blocking plate 511 separates the medicine discharge channel 42 and the atomization channel 500. The channel 500 is separated, and a plurality of medicine outlet holes 512 located on the same circumference are formed on the blocking plate 511; a main airway 43 and a branch airway 44 are also formed on the atomizing seat 4, and the cross-sectional area of ​​the branch airway 44 is smaller than the cross-sectional area of ​​the main airway 43. One end of the branch airway 44 is connected to the main airway 43 and the other end is connected to the top of the medicine liquid containing chamber 41. The input end of the main airway 43 is connected to the output end of the flowmeter 2, and the output end of the main airway 43 is connected to the conical airway 50. The compressed gas ejected from the conical airway 50 atomizes the medicine liquid discharged from the medicine outlet hole 512 in the atomizing channel 500.

[0044] The nozzle 5 includes a base body 51 and a cover body 52 . The cover body 52 is sleeved on the base body 51 . The blocking plate 511 is integrally formed on the base body 51 . The atomization channel 500 is opened on the cover body 52 . An annular air inlet cavity is formed between the seat body 51 and the cover body 52, and the main air channel 43 is connected to the air inlet cavity; a conical surface 513 is processed on the seat body 51 and the cover body 52, and there is a spacing between the two conical surfaces 513, and the gap between the two conical surfaces 513 forms a conical air channel 50 of the nozzle 5, wherein a plurality of convex strips 514 are integrally formed on one of the conical surfaces 513. In this embodiment, the convex strips 514 are integrally formed on the seat body 51, and the plurality of convex strips 514 are evenly distributed along the circumference of the blocking plate 511, and air flow grooves 515 are formed between adjacent convex strips 514, one end of the air flow groove 515 is connected to the air inlet cavity, and the other end of the air flow groove 515 is connected to the atomization channel 500, and the surface of the convex strip 514 opposite to the conical surface 513 is parallel, so that the convex strip 514 can be in contact with the conical surface 513.

[0045] The protrusion 514 and the generatrix of the conical surface 513 are at an angle, that is, the protrusion 514 is inclined relative to the generatrix. The closer the airflow groove 515 is to the atomization channel 500, the smaller the cross-sectional area is, so that the airflow velocity after being ejected from the airflow groove 515 is greater.

[0046] The seat body 51 is fixed on the medicine discharge channel 42 by a threaded connection, and the cover body 52 is threadedly connected to the seat body 51. An arc-shaped connecting hole 521 is processed on the cover body 52. ​​The arc-shaped connecting hole 521 can connect the main airway 43 with the air inlet cavity. After the cover body 52 is screwed, the distance between the two conical surfaces 513 on the conical airway 50 can be adjusted, thereby adjusting the size of the airflow ejected from the airflow groove 515.

[0047] One end of the air outlet pipe 7 connected to the atomization channel 500 has at least one curved section 71, which blocks the large-particle medicine from being transported toward the user's oral cavity and forms a buffer for the atomized gas.

[0048] The method of using the double oxygen inhalation device for atomization is as follows:

[0049] Step 1: inject the drug solution to be atomized into the drug solution containing chamber 41 , and seal the injection port of the drug solution containing chamber 41 .

[0050] During the process of loading the medicine liquid, since the hole on the blocking plate 511 is a small liquid outlet hole with a small aperture, only a very small amount of the medicine liquid flows out from the small liquid outlet hole 512 into the atomization channel 500 during the process of pouring the medicine liquid into the medicine liquid containing chamber 41, which does not affect the subsequent atomization of the medicine liquid.

[0051] Step 2: Turn on the flow meter 2, so that the compressed oxygen enters the conical channel of the nozzle 5 from the flow meter 2 through the main air channel 43, and the compressed oxygen is sprayed from the conical channel to the atomization channel 500; at the same time, part of the compressed oxygen in the main air channel 43 enters the medicine liquid containing chamber 41 from the branch air channel 44, forcing the pressure in the medicine liquid containing chamber 41 to increase, so that the medicine is squeezed out from the medicine discharge channel 42 and sprayed from the liquid outlet holes on the blocking plate 511 into the atomization channel 500, and the compressed oxygen and the sprayed medicine collide in the atomization channel 500 to achieve atomization.

[0052] Step 3: When it is found that the particles atomized from the liquid medicine do not meet the requirements, the flow rate of the flow meter 2 can be adjusted, or the cover 52 of the nozzle 5 can be screwed to adjust the distance between the two conical surfaces 513 on the conical airway 50, or both can be adjusted at the same time; if the particles after atomization are larger, the flow rate of the flow meter 2 can be increased, or the distance between the two conical surfaces 513 can be reduced; otherwise, the flow rate of the flow meter 2 can be reduced or the distance between the two conical surfaces 513 can be increased.

[0053] In this embodiment, by improving the atomizer 45, the medicine liquid is sprayed out from multiple medicine outlet holes 512, which prolongs the length of the medicine liquid moving in the atomization channel 500, thereby increasing the contact area with the compressed oxygen sprayed out of the conical airway 50. Compared with the prior art method in which the compressed gas is located in the center and the medicine liquid is located outside the gas, the utilization rate of the compressed gas is improved, and the relative contact area between the medicine liquid and the compressed gas is increased, which is conducive to realizing the atomization of the medicine liquid at a smaller compressed gas flow rate, thereby reducing the concentration of oxygen in the atomized gas per unit time.

[0054] In addition, when this embodiment is adopted, the air channel 44 provides power for the spraying of the medicine liquid on the one hand, and on the other hand, it also enables the medicine liquid in the medicine liquid containing chamber 41 to be emptied under air pressure, thereby improving the utilization rate of the medicine.

[0055] In addition, after the atomizer 45 is improved in this embodiment, the atomizer 45 has a simple structure. The main parts of the atomizer 45 for atomization are only the atomizing seat 4 and the nozzle 5, and the structure of the nozzle 5 also only has a cover body 52 and a seat body 51. Therefore, the production cost and assembly cost of the parts of the atomizer 45 are low, and the disinfection cost when it is recycled after use is also low.

[0056] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A dual oxygen absorption device, comprising a tee and two flow meters installed on the tee, the output end of each flow meter is used to connect a humidification bottle or a nebulizer, and the output end of the nebulizer is installed with an air outlet pipe, characterized in that: The outlet pipe is provided with a buffer bag protruding outward, the buffer bag is elastic, and the outlet pipe is also provided with an air intake cover, the air intake cover covers the buffer bag, a closed space is formed between the air intake cover and the buffer bag, the buffer bag is connected to the outlet pipe, a first one-way air intake valve is installed on the buffer bag, and a second one-way air intake valve is installed on the air intake cover, the first one-way air intake valve is used for gas to enter the buffer bag from the air intake cover, and the second one-way air intake valve is used for gas to enter the air intake cover from the outside; A reversing valve is installed at the output end of one of the flow meters. The reversing valve has at least two output ports. A humidifying bottle is installed on one of the output ports of the reversing valve, and an atomizer is installed on the other output port of the reversing valve.

2. A dual oxygen absorption device according to claim 1, characterized in that: The atomizer comprises an atomizer seat and a nozzle. The atomizer seat is provided with a medicine liquid containing chamber and a medicine discharge channel. The nozzle is sleeved on the output end of the medicine discharge channel. A conical airway and an atomization channel are provided in the nozzle. The atomization channel is connected to the air outlet pipe. A blocking plate is provided on the medicine discharge channel or the nozzle. The blocking plate separates the medicine discharge channel and the atomization channel. The blocking plate is provided with a plurality of medicine discharge holes located on the same circumference. The atomizer seat is also provided with a main airway and a branch airway. One end of the branch airway is connected to the main airway and the other end is connected to the medicine liquid containing chamber. The input end of the main airway is connected to the output end of the flowmeter, and the output end of the main airway is connected to the conical airway. The compressed gas sprayed from the conical airway atomizes the medicine liquid discharged from the medicine discharge hole in the atomization channel.

3. A dual oxygen absorption device according to claim 2, characterized in that: The nozzle includes a seat body and a cover body, an air inlet cavity is provided between the seat body and the cover body, and the main air channel is connected to the air inlet cavity; the seat body and the cover body are both provided with conical surfaces, there is a spacing between the two conical surfaces, and the gap between the two conical surfaces forms a conical air channel of the nozzle, one of the conical surfaces is provided with a plurality of convex strips, the plurality of convex strips are evenly distributed along the circumference of the blocking plate, and air flow grooves are formed between adjacent convex strips, one end of the air flow grooves is connected to the air inlet cavity, and the other end is connected to the atomization channel.

4. A dual oxygen absorption device according to claim 3, characterized in that: There is an included angle between the convex strip and the generatrix of the tapered surface.

5. A dual oxygen absorption device according to claim 4, characterized in that: The closer the airflow groove is to the atomization channel, the smaller the cross-sectional area is.

6. A dual oxygen absorption device according to any one of claims 3 to 5, characterized in that: The seat body is fixedly connected to the medicine discharge channel, the cover body is sleeved on the seat body, the cover body and the seat body are threadedly connected, and an arc-shaped connecting hole is provided on the cover body, which can connect the main airway with the air inlet cavity.

7. A dual oxygen absorption device according to any one of claims 2 to 5, characterized in that: The end of the air outlet pipe connected to the atomization channel has at least one curved section.

8. A dual oxygen absorption device according to any one of claims 2 to 5, characterized in that: The blocking plate is fixed on the seat body.

Images