Oral suction oxygenator

Abstract

The application provides a mouth-sucking oxygen inhaler, which comprises a mask, a mouthpiece fixed on the mask, and an oxygen supplier connected with the air inlet end of the mouthpiece; the oxygen supplier comprises a gas mixing chamber connected with the air inlet end of the mouthpiece, a positive pressure pure oxygen chamber connected with the air inlet end of the gas mixing chamber, a crank switch gas valve assembly arranged in the gas mixing chamber, and a flow regulating assembly arranged in the positive pressure pure oxygen chamber; the sidewall of the gas mixing chamber is provided with an ordinary air inlet connected with the outside and a pure oxygen inlet connected with the positive pressure pure oxygen chamber; the crank switch gas valve assembly comprises an arc-shaped crank, an air inlet sealing block fixed on one end of the arc-shaped crank, and an oxygen inlet sealing block fixed on the other end. The application can effectively control the oxygen concentration and prevent the oxygen from directly entering the human body, thereby improving the health during use.

Description

Technical Field

[0001] This invention relates primarily to the technical field of oxygen inhalers, specifically to a mouth-inhalation oxygen inhaler. Background Technology

[0002] Oxygen therapy and oxygen health care require high concentrations of oxygen. Both healthy and sub-healthy individuals use oxygen inhalation devices when inhaling oxygen at home or in the medical field.

[0003] According to patent application CN201420746624.3, which discloses a wired controller for an ear-hook oxygen inhaler and the ear-hook oxygen inhaler itself, the product includes a power input socket, an integrated button, and a cable outlet. The integrated button includes a heating switch; an external power source is connected to one end of the heating switch via the power input socket, and the other end of the heating switch is connected to the cable outlet. The integrated button also includes an audio control button for controlling the output of an internal audio module; an external power source is connected to the internal audio module via the power input socket, and the output of the internal audio module is connected to the cable outlet. The ear-hook oxygen inhaler includes a wired controller. In use, the cable outlet is connected to the signal jack on the ear-hook oxygen inhaler, allowing the user to easily switch the heating function on and off and adjust the audio output as needed without getting up; operation is simple and convenient.

[0004] While these oxygen concentrators offer the advantage of allowing users to adjust the switch as needed without getting up, they still rely on estimation rather than monitoring the actual oxygen concentration inhaled. Medically, gases with an oxygen concentration greater than 50% are defined as harmful to the human body; most use low-flow nasal inhalation, providing a continuous supply of oxygen, which is utilized during inhalation but wasted during exhalation. Theoretically, oxygen utilization is only 50%, resulting in significant waste. Summary of the Invention

[0005] This invention mainly provides a mouth-to-mouth oxygen inhaler to solve the technical problems mentioned in the background art.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0007] A mouth-to-mouth oxygen concentrator includes a mask, a mouthpiece worn on the mask, and an oxygen supply unit connected to the air inlet end of the mouthpiece.

[0008] The oxygen supply unit includes a gas mixing chamber connected to the inlet end of the suction nozzle via a hose, and a positive pressure pure oxygen chamber connected to the inlet end of the gas mixing chamber. The gas mixing chamber is equipped with a crank switch valve assembly for opening and closing the outlet of the positive pressure pure oxygen chamber, and the positive pressure pure oxygen chamber is equipped with a flow regulating assembly for regulating the flow rate of pure oxygen in the chamber.

[0009] The side wall of the gas mixing chamber is provided with a normal air inlet that connects to the outside, and a pure oxygen inlet that connects to the positive pressure pure oxygen chamber.

[0010] The crank-operated valve assembly includes an arc-shaped crank rotatably connected to the inner wall of the gas mixing chamber via a rotating shaft, an air inlet sealing block fixed to one end of the arc-shaped crank, and an oxygen inlet sealing block fixed to the other end of the arc-shaped crank. When the oxygen concentrator is used, the arc-shaped crank rotates under the negative pressure generated by the suction force of the mouth to open the ordinary air inlet and the pure oxygen inlet, thereby mixing oxygen and air.

[0011] Furthermore, the crank switch valve assembly also includes a spring plate with one end fixed to the interior of the gas mixing chamber by a fixing pin and the other end fixed to the end of the arc-shaped crank near the air inlet sealing block, as well as a stop post fixed to the inner wall of the gas mixing chamber. The stop post blocks the displacement of the arc-shaped crank, thereby preventing the arc-shaped crank from excessively driving the inlet sealing block and the oxygen inlet sealing block to move, thus affecting the opening and closing of the ordinary air inlet and the pure oxygen inlet.

[0012] Furthermore, the oxygen inlet sealing block includes a crank bar fixed to one end of the arc-shaped crank away from the oxygen inlet sealing block, and a sealing ball fixed to one end of the crank bar away from the arc-shaped crank, so that when the arc-shaped crank rotates, the crank bar on the arc-shaped crank can drive the sealing ball to move along the arc-shaped trajectory, so that the sealing ball accurately seals the pure oxygen inlet.

[0013] Furthermore, the flow regulating component includes a partition fixed to the inner wall of the positive pressure pure oxygen chamber, a screw connected to the shell of the positive pressure pure oxygen chamber by a thread, and a sealing slider fixed to one end of the screw extending into the positive pressure pure oxygen chamber. The partition has multiple vents at the end near the pure oxygen inlet, thereby blocking the multiple pure oxygen inlets on the partition and thus increasing or decreasing the pure oxygen flow rate.

[0014] Furthermore, the gas mixing chamber is provided with a silicone plug that passes through the ordinary air inlet, and a one-way valve is fixed on the inner wall of the gas mixing chamber. The ordinary air inlet on the gas mixing chamber is sealed by the silicone plug so that the user can use it in an emergency when pure oxygen is needed.

[0015] Furthermore, a pressure detection sensor is fixed to the inner wall surface of the positive pressure pure oxygen chamber. The PSM-VR pressure detection sensor on the inner wall surface of the positive pressure pure oxygen chamber senses changes in the pressure inside the chamber. The STMFZET microcontroller connected to the pressure detection sensor controls the on / off switch of the indicator light connected to the microcontroller to remind the user to replace the oxygen source in time.

[0016] Furthermore, the inner side of the mask is provided with a fixing component for fixing to the suction nozzle. The fixing component includes a locking cylinder that passes through the mask and a protrusion fixed to the outer surface of the locking cylinder. One side surface of the protrusion is provided with Velcro for adhering to the mask, thereby adhering the locking cylinder and its inner suction nozzle to the mask. The Velcro also facilitates the fixing of the suction nozzle.

[0017] Furthermore, the locking cylinder is embedded with multiple equally spaced O-rings. The O-rings inside the locking cylinder reduce the gap between the inner wall of the locking cylinder and the suction nozzle, thereby improving the stability of the suction nozzle after it is inserted into the locking cylinder.

[0018] Furthermore, the lower surface of the mouthpiece is provided with a lozenge slot, and the side wall of the mouthpiece is provided with a humidifier air inlet, allowing the user to insert lozenges of different flavors through the lozenge slot at the bottom of the mouthpiece to improve the user experience. The humidifier air inlet on the side wall of the mouthpiece increases the humidity inside the mouthpiece, thereby improving the user experience.

[0019] Furthermore, the gas mixing chamber has a mixed gas oxygen concentration detection port on its side wall, through which an oxygen concentration analyzer can be connected and used within the gas mixing chamber.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] Firstly, this invention effectively controls the oxygen concentration, keeping it below 35%, preventing pure oxygen from directly entering the body and thus improving health during use. Specifically, the arc-shaped crank in the gas mixing chamber rotates under negative pressure, opening both the pure oxygen inlet and the ordinary air inlet. This allows air and oxygen to mix as the user breathes into the gas mixing chamber, ensuring the oxygen concentration can be adjusted to the medically permissible range of <35% at any time. By mixing the pure oxygen before inhalation, the risks are reduced. This is a boon for pregnant women seeking oxygen supplementation. Currently, pregnant women receive pure oxygen, and doctors recommend no more than 30 minutes of inhalation to ensure their health. This invention overcomes this limitation. By controlling the oxygen concentration, pregnant women inhale air with only a slightly higher oxygen content than ordinary air, allowing for longer inhalations. This is crucial for both the pregnant woman and fetal development.

[0022] Secondly, when using an oxygen concentrator, since the nozzle connected to the oxygen supply is fixed to the mask, it can be used as soon as the user puts on the mask and inserts the nozzle into their mouth. Because the mask has little impact on the user's range of motion, it improves the user's flexibility and comfort.

[0023] Thirdly, the present invention can effectively control the flow rate of pure oxygen through the flow regulation component in the positive pressure pure oxygen chamber, so as to adjust the oxygen supply according to the user's needs.

[0024] Fourth, this invention achieves the function of opening and closing pure oxygen without the need for external force or valves, relying solely on the negative pressure generated by the body's own inhalation and a crankshaft connecting rod mechanism. Pure oxygen automatically opens during inhalation and automatically closes during exhalation. This saves on pure oxygen loss, theoretically reducing it by 50%. This significantly reduces the burden on tourists in high-altitude areas who require supplemental oxygen.

[0025] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of the oxygen supply device of the present invention;

[0028] Figure 3 This is a schematic diagram of the crank switch valve assembly of the present invention;

[0029] Figure 4 This is a top view of the internal structure of the oxygen supply device of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the fixing component of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the suction nozzle of the present invention;

[0032] Figure 7 This is a schematic diagram of the gas mixing chamber and the positive pressure pure oxygen chamber of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of the present invention.

[0034] In the diagram: 10. Oxygen supply unit; 11. Gas mixing chamber; 111. Ordinary air inlet; 112. Pure oxygen inlet; 113. Silicone plug; 114. One-way valve; 115. Mixed gas oxygen concentration detection port; 12. Positive pressure pure oxygen chamber; 121. Pressure sensor; 13. Crank switch valve assembly; 131. Arc-shaped crank; 132. Oxygen inlet sealing block; 1321. Crank bar; 1322. Sealing ball; 133. Spring plate; 134. Termination post; 135. Air inlet sealing block; 14. Flow regulating assembly; 141. Partition plate; 142. Screw; 143. Sealing slider; 144. Vent; 20. Nozzle; 21. Lozenge slot; 22. Humidifier air inlet; 30. Mask; 31. Fixing assembly; 311. Protruding plate; 312. Locking cylinder; 313. Velcro; 314. O-ring. Detailed Implementation

[0035] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] For an example, please refer to the appendix. Figure 1-8 In a preferred embodiment of the present invention, the mouth-to-mouth oxygen inhaler includes a mask 30, a mouthpiece 20 worn on the mask 30, and an oxygen supply unit 10 connected to the air inlet end of the mouthpiece 20.

[0039] The oxygen supply unit 10 includes a gas mixing chamber 11 connected to the air inlet of the nozzle 20 via a hose, and a positive pressure pure oxygen chamber 12 connected to the air inlet of the gas mixing chamber 11. The gas mixing chamber 11 is provided with a crank switch valve assembly 13 for opening and closing the air outlet of the positive pressure pure oxygen chamber 12, and the positive pressure pure oxygen chamber 12 is provided with a flow regulating assembly 14 for regulating the flow rate of pure oxygen in the chamber.

[0040] The side wall of the gas mixing chamber 11 is provided with a normal air inlet 111 that communicates with the outside, and a pure oxygen inlet 112 that communicates with the positive pressure pure oxygen chamber 12.

[0041] The crank switch valve assembly 13 includes an arc-shaped crank 131 rotatably connected to the inner wall of the gas mixing chamber 11 via a rotating shaft, an air inlet sealing block 135 fixed to one end of the arc-shaped crank 131, and an oxygen inlet sealing block 132 fixed to the other end of the arc-shaped crank 131. When the oxygen concentrator is used, the arc-shaped crank 131 rotates under the negative pressure formed by the suction force of the mouth to open the ordinary air inlet 111 and the pure oxygen inlet 112, and to mix oxygen and air.

[0042] It should be noted that in this embodiment, when using the oxygen concentrator, since the mouthpiece 20 connected to the oxygen supply unit 10 is fixed on the mask 30, it can be used as soon as the user puts on the mask 30 and inserts the mouthpiece 20 into their mouth. Since the mask 30 has little impact on the user's range of motion, it improves the user's flexibility and enhances the comfort of use.

[0043] Furthermore, when the user inhales, a negative pressure is generated in the gas mixing chamber 11 of the oxygen supply unit 10 due to the suction force of the mouth. At this time, the arc-shaped crank 131 in the gas mixing chamber 11 rotates under the influence of the negative pressure. Since the arc-shaped crank 131 is provided with an air inlet sealing block 135 for sealing the ordinary air inlet 111 at the side wall of the gas mixing chamber 11, and an oxygen inlet sealing block 132 for sealing the pure oxygen inlet 112 between the gas mixing chamber 11 and the positive pressure pure oxygen chamber 12, the pure oxygen inlet 112 and the ordinary air inlet 111 are opened as the arc-shaped crank 131 rotates, so that air and oxygen enter the gas mixing chamber 11 for mixing with the user's breathing. This allows the oxygen concentration to be adjusted to the medically permissible range of <35% at any time. By mixing pure oxygen before inhaling it into the human body, the harm of use is reduced.

[0044] Furthermore, whether the arc-shaped crank 131 can be rotated by suction can be determined by the following formula:

[0045] Human inhalation pressure is calculated at 30 kPa for children and 40 kPa for adults. Pure oxygen pressure is calculated at 0.1 MPa = 100 kPa.

[0046] F1 > F2, meaning the suction force reliably opens the valve of the pure oxygen chamber.

[0047] Based on the above data, it is only necessary that S1 > 4S2.

[0048] S1=3.14*2*2=12.56MM2, S2=3.14*0.75*0.75=1.77MM2, S1=7 times S2,

[0049] Therefore, the negative pressure of human inhalation can easily open the pure oxygen valve.

[0050] For details, please refer to the appendix. Figure 2 and 3 In another preferred embodiment of the present invention, the crank switch valve assembly 13 further includes a spring plate 133 with one end fixed to the inside of the gas mixing chamber 11 by a fixing pin and the other end fixed to one end of the arc-shaped crank 131 near the air inlet sealing block 135, and a termination post 134 fixed to the inner wall of the gas mixing chamber 11. The oxygen inlet sealing block 132 includes a crank bar 1321 fixed to one end of the arc-shaped crank 131 away from the oxygen inlet sealing block 132, and a sealing ball 1322 fixed to one end of the crank bar 1321 away from the arc-shaped crank 131.

[0051] It should be noted that in this embodiment, when no suction is generated in the user's mouth, the arc-shaped crank 131 returns to its original working position by means of the energy stored in the spring plate 133 connected to it, ensuring that after the arc-shaped crank 131 pushes the air inlet sealing block 135 and the oxygen inlet sealing block 132 to open the ordinary air inlet 111 and the pure oxygen inlet 112, the ordinary air inlet 111 and the pure oxygen inlet 112 can be automatically closed.

[0052] Furthermore, by blocking the displacement of the arc-shaped crank 131 by the termination post 134, the arc-shaped crank 131 is prevented from excessively driving the inlet sealing block 135 and the oxygen inlet sealing block 132 to move, thus affecting the opening and closing of the ordinary air inlet 111 and the pure oxygen inlet 112.

[0053] Furthermore, when the arc-shaped crank 131 rotates, the crank bar 1321 on the arc-shaped crank 131 can drive the sealing ball 1322 to move along the arc-shaped trajectory, so that the sealing ball 1322 accurately seals the pure oxygen inlet 112.

[0054] For details, please refer to the appendix. Figure 2 , 3In another preferred embodiment of the present invention, the flow regulating assembly 14 includes a partition 141 fixed to the inner wall of the positive pressure pure oxygen chamber 12, a screw 142 connected to the shell of the positive pressure pure oxygen chamber 12 by a thread, and a sealing slider 143 fixed to one end of the screw 142 extending into the inside of the positive pressure pure oxygen chamber 12. The partition 141 has a plurality of vents 144 at one end near the pure oxygen inlet 112.

[0055] It should be noted that in this embodiment, when the user rotates the screw 142, the screw 142 is connected to the positive pressure pure oxygen chamber 12 housing by a thread, so that the screw 142 converts its own rotational motion into linear motion, thereby driving the sealing slider 143 on the screw 142 to translate, thereby blocking the multiple pure oxygen inlets 112 on the partition 141, thereby realizing the increase or decrease of pure oxygen flow rate;

[0056] Furthermore, the gas mixing chamber 11 has a mixed gas oxygen concentration detection port 115 on its side wall, so that an oxygen concentration analyzer can be connected to the gas mixing chamber 11 for use.

[0057] For details, please refer to the appendix. Figure 2 and 7 In another preferred embodiment of the present invention, a silicone plug 113 is provided on the outside of the gas mixing chamber 11 and inserted through the ordinary air inlet 111, a one-way valve 114 is fixed on the inner wall of the gas mixing chamber 11, and a pressure detection sensor 121 is fixed on the inner wall surface of the positive pressure pure oxygen chamber 12.

[0058] It should be noted that in this embodiment, the ordinary air inlet 111 on the gas mixing chamber 11 is blocked by the silicone plug 113. At the same time, the silicone plug 113 inserted into the ordinary air inlet 111 pushes the arc-shaped crank 131 to rotate to open the pure oxygen inlet 112, while the ordinary air inlet 111 on the gas mixing chamber 11 is blocked by the silicone plug 113, so that the user can use it in an emergency when pure oxygen is needed.

[0059] The gas mixing chamber 11 is equipped with a one-way valve 114 for use by users with different usage habits.

[0060] Furthermore, the pressure sensor 121 (model PSM8-VR) on the inner wall surface of the positive pressure pure oxygen chamber 12 senses the pressure changes inside the chamber. The microcontroller (model STM32F407ZET6) connected to the pressure sensor 121 controls the switch of the indicator light connected to the microcontroller to remind the user to replace the oxygen source in time.

[0061] For details, please refer to the appendix. Figure 1 , 5 In another preferred embodiment of the present invention, the inner side of the mask 30 is provided with a fixing component 31 for fixing to the mouthpiece 20. The fixing component 31 includes a locking cylinder 312 passing through the mask 30 and a convex plate 311 fixed to the outer surface of the locking cylinder 312. One side surface of the convex plate 311 is provided with Velcro 313 for bonding with the mask 30. The inside of the locking cylinder 312 is embedded with a plurality of O-rings 314 arranged at equal intervals. The lower surface of the mouthpiece 20 is provided with a lozenge slot 21, and the side wall of the mouthpiece 20 is provided with a humidifier air inlet 22.

[0062] It should be noted that in this embodiment, after the suction nozzle 20 is inserted into the locking cylinder 312, the locking cylinder 312 and its inner suction nozzle 20 are attached to the mask 30 because the convex plate 311 of the locking cylinder 312 is provided with Velcro 313. The Velcro 313 facilitates the fixation of the suction nozzle 20.

[0063] Furthermore, by using the O-ring 314 inside the locking cylinder 312, the gap between the inner wall of the locking cylinder 312 and the suction nozzle 20 is reduced, thereby improving the stability of the suction nozzle 20 after it is inserted into the locking cylinder 312.

[0064] Furthermore, it allows users to insert different flavored lozenges through the lozenge slot 21 at the bottom of the mouthpiece 20 to improve the experience of using the mouthpiece 20, and to increase the humidity inside the mouthpiece 20 through the humidifier air inlet 22 on the side wall of the mouthpiece 20, thereby improving the user experience.

[0065] The specific operation method of this invention is as follows:

[0066] When using the oxygen concentrator, since the mouthpiece 20 connected to the oxygen supply unit 10 is fixed to the mask 30, the user can use it after putting on the mask 30 and inserting the mouthpiece 20 into their mouth.

[0067] When the user inhales, a negative pressure is generated in the gas mixing chamber 11 of the oxygen supply unit 10 due to the suction force of the mouth. At this time, the arc-shaped crank 131 in the gas mixing chamber 11 rotates under the influence of the negative pressure. Since the arc-shaped crank 131 is provided with an air inlet sealing block 135 for sealing the ordinary air inlet 111 at the side wall of the gas mixing chamber 11, and an oxygen inlet sealing block 132 for sealing the pure oxygen inlet 112 between the gas mixing chamber 11 and the positive pressure pure oxygen chamber 12, the pure oxygen inlet 112 and the ordinary air inlet 111 are opened as the arc-shaped crank 131 rotates, so that air and oxygen enter the gas mixing chamber 11 for mixing with the user's breathing, thereby reducing the harm of use.

[0068] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A mouth-to-mouth oxygen concentrator, characterized in that, Includes a mask (30), a mouthpiece (20) worn on the mask (30), and an oxygen supply device (10) connected to the air inlet end of the mouthpiece (20); The oxygen supply unit (10) includes a gas mixing chamber (11) connected to the air inlet of the nozzle (20) via a hose, and a positive pressure pure oxygen chamber (12) connected to the air inlet of the gas mixing chamber (11). The gas mixing chamber (11) is provided with a crank switch valve assembly (13) for opening and closing the air outlet of the positive pressure pure oxygen chamber (12). The positive pressure pure oxygen chamber (12) is provided with a flow regulating assembly (14) for regulating the flow rate of pure oxygen in the chamber. The gas mixing chamber (11) is provided with a normal air inlet (111) that communicates with the outside, and a pure oxygen inlet (112) that communicates with the positive pressure pure oxygen chamber (12). The crank switch valve assembly (13) includes an arc-shaped crank (131) rotatably connected to the inner wall of the gas mixing chamber (11) via a rotating shaft, an air inlet sealing block (135) fixed to one end of the arc-shaped crank (131), and an oxygen inlet sealing block (132) fixed to the other end of the arc-shaped crank (131). When the oxygen concentrator is used, the arc-shaped crank (131) rotates under the negative pressure formed by the suction force of the mouth to open the ordinary air inlet (111) and the pure oxygen inlet (112), and to mix oxygen and air.

2. The mouth-to-mouth oxygen concentrator according to claim 1, characterized in that, The crank switch valve assembly (13) also includes a spring plate (133) with one end fixed to the inside of the gas mixing chamber (11) by a fixing pin and the other end fixed to the end of the arc-shaped crank (131) near the air inlet sealing block (135), and a termination post (134) fixed to the inner wall of the gas mixing chamber (11).

3. The mouth-to-mouth oxygen concentrator according to claim 1, characterized in that, The oxygen inlet sealing block (132) includes a crank bar (1321) fixed to one end of the arc-shaped crank (131) away from the oxygen inlet sealing block (132), and a sealing ball (1322) fixed to one end of the crank bar (1321) away from the arc-shaped crank (131).

4. The mouth-to-mouth oxygen concentrator according to claim 1, characterized in that, The flow regulating assembly (14) includes a partition (141) fixed to the inner wall of the positive pressure pure oxygen chamber (12), a screw (142) connected to the shell of the positive pressure pure oxygen chamber (12) by a thread, and a sealing slider (143) fixed to one end of the screw (142) extending into the inside of the positive pressure pure oxygen chamber (12). The partition (141) has a plurality of vents (144) at one end near the pure oxygen inlet (112).

5. The mouth-to-mouth oxygen concentrator according to claim 1, characterized in that, The gas mixing chamber (11) is provided with a silicone plug (113) that passes through the ordinary air inlet (111) on the outside, and a one-way valve (114) is fixed on the inner wall of the gas mixing chamber (11).

6. The mouth-to-mouth oxygen concentrator according to claim 1, characterized in that, A pressure detection sensor (121) is fixed on the inner wall surface of the positive pressure pure oxygen chamber (12).

7. The mouth-to-mouth oxygen concentrator according to claim 1, characterized in that, The inner side of the mask (30) is provided with a fixing component (31) for fixing to the mouthpiece (20). The fixing component (31) includes a locking cylinder (312) that passes through the mask (30) and a convex plate (311) fixed to the outer surface of the locking cylinder (312). One side surface of the convex plate (311) is provided with Velcro (313) for adhering to the mask (30).

8. The mouth-to-mouth oxygen concentrator according to claim 7, characterized in that, The locking cylinder (312) is internally fitted with a plurality of equally spaced O-rings (314).

9. The mouth-to-mouth oxygen concentrator according to claim 1, characterized in that, The lower surface of the nozzle (20) is provided with a tablet slot (21), and the side wall of the nozzle (20) is provided with a humidifier air inlet (22).

10. The mouth-to-mouth oxygen concentrator according to claim 1, characterized in that, The gas mixing chamber (11) is provided with a gas oxygen concentration detection port (115) on its side wall.

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