Nasal oxygen cannula capable of supplying oxygen synchronously along with breathing

Abstract

The utility model discloses a breathing synchronous following oxygen supply nasal oxygen cannula, it includes main tube, control subassembly, branch tube and nasal tip, the control subassembly includes shell, valve body and oxygen supply subassembly, oxygen supply subassembly is equipped with first air chamber and second air chamber inside, first air chamber and second air chamber are equipped with air control subassembly inside, the first air chamber and second air chamber are equipped with air control subassembly inside. A trigger gas path, an oxygen inlet gas path and a pressure maintaining gas path are arranged in the control assembly, an oxygen supply gas path is arranged in the valve body, the gas control assembly controls the first vent hole, the oxygen inlet gas path and the oxygen supply gas path to be opened during inspiration, and the gas control assembly controls the first vent hole to be closed during expiration. According to the nasal oxygen cannula, the breathing synchronous following oxygen supply function is achieved, the oxygen inhalation comfort of a patient is improved, oxygen resources are greatly saved, waste is reduced, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of nasal oxygen tubes, in particular to a nasal oxygen tube with breathing synchronous follow-up oxygen supply. Background Art

[0002] A nasal oxygen tube is a medical device commonly used in medical institutions and families, and is used for first aid oxygen supply and providing oxygen therapy for hypoxic patients.

[0003] At present, the nasal oxygen tubes on the market can be generally divided into two types. One is only equipped with the function of transporting oxygen, and the other is provided with a humidifying device in the gas path, which can not only transport oxygen, but also increase the oxygen humidity when the patient inhales oxygen. The commonality of the above two types of nasal oxygen tubes is that when the nasal oxygen tube is connected to a continuous gas source, no matter whether the patient exhales or inhales, oxygen is continuously supplied to the patient, and the patient does not need oxygen resources when exhaling. Therefore, continuous oxygen supply will bring discomfort to the user and cause a large waste of oxygen resources. Therefore, how to realize the function of breathing synchronous follow-up oxygen supply while transporting oxygen through the nasal oxygen tube is an urgent problem to be solved at present. Summary of the Invention

[0004] The utility model provides a nasal oxygen tube with breathing synchronous follow-up oxygen supply to overcome the above technical problems.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A nasal oxygen tube with breathing synchronous follow-up oxygen supply includes a main tube, a control component, a branch tube and a nasal suction head. The control component includes a shell, a valve body and an oxygen supply component. The valve body is arranged inside the shell, and the oxygen supply component is arranged between the shell and the valve body. An oxygen inlet joint is arranged on the shell, and the oxygen inlet joint is communicated with one end of the main tube. A trigger joint and an oxygen supply joint are arranged on the valve body, and the trigger joint and the oxygen supply joint are respectively communicated with the branch tube. The branch tube is respectively communicated with the air inlet parts on both sides of the nasal suction head;

[0007] The oxygen supply component includes a fixing plate and a gas control component. First air cavities and second air cavities are respectively arranged on both sides of the fixing plate. A first ventilation hole is arranged on the fixing plate. One end of the first ventilation hole is communicated with the first air cavity, and the other end of the first ventilation hole is communicated with the second air cavity. The gas control component is arranged inside both the first air cavity and the second air cavity;

[0008] Inside the control component, there are a trigger air passage, an oxygen inlet passage, and a pressure maintaining air passage. Inside the valve body, there is an oxygen supply passage. One end of the trigger air passage is connected to the trigger joint, and the other end is connected to the second air chamber. One end of the oxygen inlet passage is connected to the oxygen inlet joint, and the other end is connected to the first air chamber. One end of the pressure maintaining air passage is connected to the oxygen inlet joint, and the other end is connected to the first air chamber. One end of the oxygen supply passage is connected to the first air chamber, and the other end is connected to the oxygen supply joint;

[0009] During inhalation, the air control component controls the opening of the first ventilation hole, the oxygen inlet passage, and the oxygen supply passage;

[0010] During exhalation, the air control component controls the disconnection of the first ventilation hole, the oxygen inlet passage, and the oxygen supply passage.

[0011] Furthermore, the air control component includes a pilot diaphragm and a main valve diaphragm. The pilot diaphragm is arranged at the bottom of the second air chamber, and the main valve diaphragm is arranged at the bottom of the first air chamber.

[0012] Furthermore, the control component further includes an upper cover. The oxygen supply component further includes a spring and a knob. The knob is arranged in the installation hole provided at the center of the upper cover. One end of the spring abuts against the knob, and the other end of the spring abuts against the pilot diaphragm.

[0013] Furthermore, the valve body is provided with a first trigger air hole, and the upper cover is provided with a second trigger air hole. The trigger air passage includes the first trigger air hole and the second trigger air hole. One end of the first trigger air hole is connected to the trigger joint, the other end of the first trigger air hole is connected to one end of the second trigger air hole, and the other end of the second trigger air hole is connected to the second air chamber.

[0014] Furthermore, the control component further includes a gear adjustment plate. The gear adjustment plate is arranged between the housing and the valve body. The gear adjustment plate is provided with a plurality of adjustment air holes with different apertures. The housing is provided with a first oxygen inlet hole, and the valve body is provided with a second oxygen inlet hole. The oxygen inlet passage includes the first oxygen inlet hole, the adjustment air hole, and the second oxygen inlet hole. One end of the first oxygen inlet hole is connected to the oxygen inlet joint. During the rotation of the gear adjustment plate, both ends of the adjustment air hole can be respectively connected to the first oxygen inlet hole and the second oxygen inlet hole, and the other end of the second oxygen inlet hole is connected to the first air chamber.

[0015] Further, a first pressure-holding air hole is provided on the housing, a second pressure-holding air hole is provided on the valve body, a third pressure-holding air hole is provided on the main valve diaphragm, and the oxygen supply assembly further includes a microporous valve plate. The microporous valve plate is arranged between the main valve diaphragm and the valve body. The pressure-holding air path includes the first pressure-holding air hole, the second pressure-holding air hole, the micropores on the microporous valve plate, and the third pressure-holding air hole. One end of the first pressure-holding air hole is communicated with the oxygen inlet joint, the other end of the first pressure-holding air hole is communicated with one end of the second pressure-holding air hole, the other end of the second pressure-holding air hole is communicated with the third pressure-holding air hole through the micropores on the microporous valve plate, and the third pressure-holding air hole is communicated with the first air chamber.

[0016] Further, a sealing ring is further included. The sealing ring is arranged between the housing, the valve body and the gear adjustment plate, and the sealing ring is arranged between the valve body and the upper cover.

[0017] Beneficial effects: A nasal oxygen tube with breathing synchronous follow-up oxygen supply disclosed by the present utility model realizes an oxygen supply function following breathing synchronization by setting a control component between the main pipe and the branch pipe. The gas source gas enters the control component through the main pipe. When there is no patient wearing a nasal inhaler at the branch pipe side, the air control component does not receive the trigger pressure and the overall air path is in a closed state; when the patient wears the nasal inhaler and inhales, the air control component receives a certain trigger pressure to open the entire air path, realizing the inhalation-triggered oxygen supply function; when the patient enters the exhalation state, the control component receives the negative pressure generated by exhalation to close the entire air path, realizing the exhalation-stop oxygen supply function. The present utility model realizes a nasal oxygen tube with a breathing synchronous follow-up oxygen supply function, improves the comfort of the patient's oxygen inhalation, greatly saves oxygen resources, reduces waste, and has strong practicability. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the overall structure of a nasal oxygen tube with breathing synchronous follow-up oxygen supply disclosed in the embodiment of the present utility model;

[0020] Figure 2 It is Figure 1 the sectional view taken along line A-A in

[0021] Figure 3 It is Figure 1 the sectional view taken along line B-B in

[0022] Figure 4 is Figure 2 a partial enlarged view of part M therein;

[0023] Figure 5 is a schematic structural diagram of a gear shifting adjustment plate disclosed in an embodiment of the present utility model;

[0024] Figure 6 is a gas path diagram of synchronous oxygen supply of a nasal oxygen tube with respiratory synchronous following oxygen supply disclosed in an embodiment of the present utility model;

[0025] In the figure: 1, main pipe; 2, control assembly; 21, pressure maintaining gas path; 22, housing; 221, oxygen inlet joint; 222, first pressure maintaining air hole; 223, first oxygen inlet air hole; 224, outer shell; 225, inner shell; 23, valve body; 231, trigger joint; 232, oxygen supply joint; 233, second pressure maintaining air hole; 234, second oxygen inlet air hole; 235, first trigger air hole; 236, air passage hole; 237, oxygen supply gas path; 24, upper cover; 241, second trigger air hole; 25, oxygen supply assembly; 251, pilot diaphragm; 252, fixing plate; 252A, first ventilation hole; 253, main valve diaphragm; 253A, third pressure maintaining air hole; 254, spring; 255, knob; 256, microporous valve plate; 257, air control assembly; 25A, first air chamber; 25B, second air chamber; 26, gear shifting adjustment plate; 261, third oxygen inlet air hole; 262, fourth oxygen inlet air hole; 263, adjustment air hole; 27, trigger gas path; 28, oxygen inlet gas path; 3, branch pipe; 4, nasal inhaler; 5, sealing ring. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] This embodiment provides a nasal oxygen tube with respiratory synchronous following oxygen supply, as Figures 1-4As shown in the figure, it includes a main pipe 1, a control component 2, branch pipes 3, and nasal tips 4. The control component 2 includes a housing 22, a valve body 23, and an oxygen supply component 25. The valve body 23 is arranged inside the housing 22, and the oxygen supply component 25 is arranged between the housing 22 and the valve body 23. An oxygen inlet joint 221 is provided on the housing 22, and the oxygen inlet joint 221 is connected to one end of the main pipe 1. A trigger joint 231 and an oxygen supply joint 232 are provided on the valve body 23. The trigger joint 231 and the oxygen supply joint 232 are respectively connected to the branch pipes 3, and the branch pipes 3 are respectively connected to the air inlet parts on both sides of the nasal tips 4;

[0028] The oxygen supply component 25 includes a fixing plate 252 and an air control component 257. A first air chamber 25A and a second air chamber 25B are respectively provided on both sides of the fixing plate 252. A first ventilation hole 252A is provided on the fixing plate 252. One end of the first ventilation hole 252A is connected to the first air chamber 25A, and the other end of the first ventilation hole 252A is connected to the second air chamber 25B. The air control component 257 is provided inside both the first air chamber 25A and the second air chamber 25B;

[0029] A trigger air path 27, an oxygen inlet air path 28, and a pressure maintaining air path 21 are provided inside the control component 2. A oxygen supply air path 237 is provided inside the valve body 23. One end of the trigger air path 27 is connected to the trigger joint 231, and the other end of the trigger air path 27 is connected to the second air chamber 25B. One end of the oxygen inlet air path 28 is connected to the oxygen inlet joint 221, and the other end of the oxygen inlet air path 28 is connected to the first air chamber 25A. One end of the pressure maintaining air path 21 is connected to the oxygen inlet joint 221, and the other end of the pressure maintaining air path 21 is connected to the first air chamber 25A. One end of the oxygen supply air path 237 is connected to the first air chamber 25A, and the other end of the oxygen supply air path 237 is connected to the oxygen supply joint 232;

[0030] During inhalation, the air control component 257 controls the first ventilation hole 252A, the oxygen inlet air path 28, and the oxygen supply air path 237 to open;

[0031] During exhalation, the air control component 257 controls the first ventilation hole 252A, the oxygen inlet air path 28, and the oxygen supply air path 237 to disconnect.

[0032] In this embodiment, the main pipe is connected to the oxygen supply device, and the user wears a nasal inhaler to inhale oxygen. By arranging a control component between the main pipe and the branch pipe, the gas source gas enters the control component through the main pipe. When there is no patient wearing the nasal inhaler on the branch pipe side, the control component does not receive the trigger pressure and the overall gas path is in a closed state; when the patient wears the nasal inhaler and inhales, the air control component receives a certain trigger pressure through the trigger gas path to open the entire gas path, realizing the inhalation trigger oxygen supply function; when the patient enters the exhalation state, the air control component receives the negative pressure generated by exhalation through the trigger gas path to close the entire gas path, realizing the exhalation stop oxygen supply function. The utility model realizes a nasal oxygen tube with a breathing synchronous follow-up oxygen supply function, improves the comfort of the patient's oxygen inhalation, greatly saves oxygen resources, reduces waste, and has strong practicability.

[0033] In a specific embodiment, the air control component 257 includes a pilot diaphragm 251 and a main valve diaphragm 253. The pilot diaphragm 251 is arranged at the bottom of the second air chamber 25B, and the main valve diaphragm 253 is arranged at the bottom of the first air chamber 25A.

[0034] Specifically, as Figure 6 shown, the operation mode of this embodiment is as follows:

[0035] Connect the oxygen source to the main pipe 1. The initial state is that the main valve diaphragm 253 is in contact with the outlet end on the upper side of the second oxygen inlet hole 234, the oxygen inlet path 28 is in a closed state, and at the same time, the pilot diaphragm 251 is in contact with the first ventilation hole 252A. When the patient wears the nasal inhaler 4 and uses this embodiment, when the patient inhales, the negative pressure generated by inhalation enters the second valve cavity 25B through the trigger gas path 27, resulting in a decrease in the gas pressure in the second gas cavity 25B. The pressure on the upper side of the pilot diaphragm 251 is less than the pressure on its lower side, and the pilot diaphragm 251 moves upward and disengages from the first ventilation hole 252A. The first ventilation hole 252A opens, and gas enters the first gas cavity 25A through the first ventilation hole 252A. The first gas cavity 25A is connected to the air passage hole 236 through the first ventilation hole 252A, so that the gas pressure in the first valve cavity 25A decreases. The pressure on the upper side of the main valve diaphragm 253 is less than the pressure on its lower side, and the main valve diaphragm 253 moves upward and disengages from the second oxygen inlet hole 234. The oxygen inlet path 28 is opened, and the oxygen source gas passes through the oxygen inlet joint 221, the oxygen inlet path 28, the first gas cavity 25A, the oxygen supply path 237, the oxygen supply joint 232, the branch pipe 3, and the nasal inhaler 4 in sequence and is supplied to the patient for use, realizing the inhalation-triggered oxygen supply function. When the patient exhales, the pressure generated by exhalation enters the second valve cavity 25B through the trigger gas path 27, resulting in an increase in the gas pressure in the second valve cavity 25B. The pilot diaphragm 251 is subjected to a downward pressure and returns to contact with the first ventilation hole 252A, and the first ventilation hole 252A is closed. At the same time, since the gas source gas continuously enters the first valve cavity 25A through the oxygen inlet joint 221 and the pressure maintaining gas path 21, the gas pressure in the first valve cavity 25A continuously increases, causing the main valve diaphragm 253 to move downward and contact the second oxygen inlet hole 234 to reset. At this time, the oxygen inlet path 28 and the oxygen supply path 237 are closed, and no oxygen enters the branch pipe 3, realizing the exhalation-stop oxygen supply function. In summary, the nasal oxygen tube provided by the present invention can realize the breathing-synchronous follow-up oxygen supply function.

[0036] In a specific embodiment, the control component 2 further includes an upper cover 24. The oxygen supply component 25 further includes a spring 254 and a knob 255. The knob 255 is arranged in a mounting hole provided at the center of the upper cover 24 by means of threaded connection. One end of the spring 254 abuts against the knob 255, and the other end of the spring 254 abuts against the pilot diaphragm 251. The pilot diaphragm 251 is attached to the first ventilation hole 252A under the elastic force of the spring 254. Rotating the knob 255 can change the magnitude of the elastic force of the spring 254 acting on the pilot diaphragm 251, control the opening force of the pilot diaphragm 251 and the first ventilation hole 252A, and thus can adjust the magnitude of the trigger pressure.

[0037] In a specific embodiment, a first trigger air hole 235 is provided on the valve body 23, and a second trigger air hole 241 is provided on the upper cover 24. The trigger air path 27 includes the first trigger air hole 235 and the second trigger air hole 241. One end of the first trigger air hole 235 is communicated with the trigger joint 231, the other end of the first trigger air hole 235 is communicated with one end of the second trigger air hole 241, and the other end of the second trigger air hole 241 is communicated with the second air chamber 25B. When the patient inhales, the gas sequentially passes through the nasal inhaler 4, the branch pipe 3, the trigger joint 231, the first trigger air hole 235 and the second trigger air hole 241 and enters the second air chamber 25B, so that the pressure on the upper side of the pilot diaphragm 251 is reduced.

[0038] In a specific embodiment, the control component 2 further includes a gear adjustment plate 26. The gear adjustment plate 26 is arranged between the housing 22 and the valve body 23. A third oxygen inlet hole 261 and a fourth oxygen inlet hole 262 are provided on the gear adjustment plate 26, as Figure 5As shown, a first oxygen inlet hole 223 is provided on the housing 22, a second oxygen inlet hole 234 is provided on the valve body 23, and the oxygen inlet path 28 includes the first oxygen inlet hole 223, the third oxygen inlet hole 261 / the fourth oxygen inlet hole 262, and the second oxygen inlet hole 234. One end of the first oxygen inlet hole 223 is communicated with the oxygen inlet connector 221. During the rotation of the gear adjustment plate 26, both ends of the third oxygen inlet hole 261 and the fourth oxygen inlet hole 262 can be respectively communicated with the first oxygen inlet hole 223 and the second oxygen inlet hole 234 to achieve oxygen supply with two flow rates and realize the gear adjustment of the oxygen supply flow rate. The other end of the second oxygen inlet hole 234 is communicated with the first air chamber 25A. When the patient inhales, oxygen from the oxygen source sequentially passes through the main pipe 1, the oxygen inlet connector 221, the first oxygen inlet hole 223, the third oxygen inlet hole 261 / the fourth oxygen inlet hole 262, the second oxygen inlet hole 234, the first air chamber 25A, the oxygen supply path 237, the oxygen supply connector 232, the branch pipe 3, and the nasal cannula 4 to supply the patient.

[0039] In a specific embodiment, a first pressure maintaining hole 222 is provided on the housing 22, a second pressure maintaining hole 233 is provided on the valve body 23, a third pressure maintaining hole 253A is provided on the main valve diaphragm 253, and the oxygen supply assembly 25 further includes a microporous valve plate 256. The microporous valve plate 256 is arranged between the main valve diaphragm 253 and the valve body 23. The pressure maintaining path 21 includes the first pressure maintaining hole 222, the second pressure maintaining hole 233, the micropores on the microporous valve plate 256, and the third pressure maintaining hole 253A. One end of the first pressure maintaining hole 222 is communicated with the oxygen inlet connector 221, the other end of the first pressure maintaining hole 222 is communicated with one end of the second pressure maintaining hole 233, the other end of the second pressure maintaining hole 233 is communicated with the third pressure maintaining hole 253A through the micropores on the microporous valve plate 256, and the third pressure maintaining hole 253A is communicated with the first air chamber 25A. When the patient exhales, the pilot diaphragm 251 moves downward to reset to the first ventilation hole 252A. At this time, oxygen from the oxygen source sequentially passes through the main pipe 1, the oxygen inlet connector 221, the first pressure maintaining hole 222, the second pressure maintaining hole 233, the micropores on the microporous valve plate 256, and the third pressure maintaining hole 253A to enter the first air chamber 25A. The gas pressure in the first air chamber 25A increases, driving the main valve diaphragm 253 to move downward to reset to the second oxygen inlet hole 234. At this time, the second oxygen inlet hole 234 is not communicated with the oxygen supply path, and no oxygen is supplied to the patient, realizing the stop of oxygen supply during exhalation.

[0040] In a specific embodiment, it further includes a sealing ring 5. The sealing ring 5 is disposed between the housing 22, the valve body 23 and the gear shifting adjusting plate 26. The sealing ring 5 is disposed between the valve body 23 and the upper cover 24. The sealing ring 5 is provided between the housing 22 and the valve body 23 for sealing the pressure maintaining gas path 21. The sealing ring 5 is respectively provided between the gear shifting adjusting plate 26 and the housing 22 and the valve body 23 for sealing the oxygen inlet gas path 28. The sealing ring 5 is provided between the valve body 23 and the upper cover 24 for sealing the trigger gas path 27.

[0041] In a specific embodiment, the housing 22 includes an inner housing 225 and an outer housing 224. The inner housing 225 and the outer housing 224 are connected in a snap - fit manner. The inner housing 225 is disposed on the upper side of the outer housing 224. The upper cover 24 and the valve body 23 are sequentially disposed from top to bottom in the cavity formed by the inner housing 225 and the outer housing 224.

[0042] Finally, it should be noted that: the above - mentioned embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A nasal oxygen cannula with synchronous oxygen supply following breathing, characterized in that: The invention comprises a main pipe (1), a control component (2), a branch pipe (3) and a nasal suction head (4); the control component (2) comprises a shell (22), a valve body (23) and an oxygen supply component (25); the valve body (23) is arranged inside the shell (22); the oxygen supply component (25) is arranged between the shell (22) and the valve body (23); the shell (22) is provided with an oxygen inlet connector (221); the oxygen inlet connector (221) is connected to one end of the main pipe (1); the valve body (23) is provided with a trigger connector (231) and an oxygen supply connector (232); the trigger connector (231) and the oxygen supply connector (232) are respectively connected to the branch pipe (3); the branch pipe (3) is respectively connected to the air inlets on both sides of the nasal suction head (4); The oxygen supply component (25) comprises a fixing plate (252) and an air control component (257), wherein a first air cavity (25A) and a second air cavity (25B) are respectively provided on two sides of the fixing plate (252), and a first air vent (252A) is provided on the fixing plate (252), wherein one end of the first air vent (252A) is connected to the first air cavity (25A), and the other end of the first air vent (252A) is connected to the second air cavity (25B), and the air control component (257) is provided inside the first air cavity (25A) and the second air cavity (25B); The control component (2) is provided with a trigger gas circuit (27), an oxygen intake circuit (28) and a pressure-maintaining gas circuit (21) inside, and the valve body (23) is provided with an oxygen supply circuit (237) inside, one end of the trigger gas circuit (27) is connected to the trigger connector (231), and the other end of the trigger gas circuit (27) is connected to the second air cavity (25B), one end of the oxygen intake circuit (28) is connected to the oxygen intake connector (221), and the other end of the oxygen intake circuit (28) is connected to the first air cavity (25A), one end of the pressure-maintaining gas circuit (21) is connected to the oxygen intake connector (221), and the other end of the pressure-maintaining gas circuit (21) is connected to the first air cavity (25A), one end of the oxygen supply circuit (237) is connected to the first air cavity (25A), and the other end of the oxygen supply circuit (237) is connected to the oxygen supply connector (232); During inhalation, the gas control component (257) controls the first vent hole (252A), the oxygen inlet path (28) and the oxygen supply path (237) to open; During exhalation, the gas control component (257) controls the first vent (252A), the oxygen intake circuit (28) and the oxygen supply circuit (237) to be disconnected.

2. A nasal oxygen cannula with synchronous breathing and oxygen supply according to claim 1, characterized in that: The air control component (257) comprises a pilot diaphragm (251) and a main valve diaphragm (253), wherein the pilot diaphragm (251) is arranged at the bottom of the second air cavity (25B), and the main valve diaphragm (253) is arranged at the bottom of the first air cavity (25A).

3. A nasal oxygen cannula for synchronous oxygen supply with breathing according to claim 2, characterized in that: The control component (2) further comprises an upper cover (24), and the oxygen supply component (25) further comprises a spring (254) and a knob (255), wherein the knob (255) is arranged in a mounting hole arranged at the center of the upper cover (24), one end of the spring (254) abuts against the knob (255), and the other end of the spring (254) abuts against the pilot diaphragm (251).

4. A nasal oxygen cannula for synchronous oxygen supply with breathing according to claim 3, characterized in that: The valve body (23) is provided with a first trigger air hole (235), the upper cover (24) is provided with a second trigger air hole (241), the trigger air path (27) comprises the first trigger air hole (235) and the second trigger air hole (241), one end of the first trigger air hole (235) is connected to the trigger joint (231), the other end of the first trigger air hole (235) is connected to one end of the second trigger air hole (241), and the other end of the second trigger air hole (241) is connected to the second air cavity (25B).

5. A nasal oxygen cannula for synchronous oxygen supply with breathing according to claim 4, characterized in that: The control component (2) further comprises a gear adjustment plate (26), wherein the gear adjustment plate (26) is arranged between the housing (22) and the valve body (23); the gear adjustment plate (26) is provided with a plurality of adjustment air holes (263) with different apertures; the housing (22) is provided with a first oxygen inlet hole (223); the valve body (23) is provided with a second oxygen inlet hole (234); the oxygen inlet path (28) comprises the first oxygen inlet hole (223), the adjustment air hole (263) and the second oxygen inlet hole (234); one end of the first oxygen inlet hole (223) is connected to the oxygen inlet connector (221); during the rotation of the gear adjustment plate (26), both ends of the adjustment air hole (263) can be respectively connected to the first oxygen inlet hole (223) and the second oxygen inlet hole (234); the other end of the second oxygen inlet hole (234) is connected to the first air cavity (25A).

6. A nasal oxygen cannula for synchronous oxygen supply with breathing according to claim 5, characterized in that: The shell (22) is provided with a first pressure-maintaining air hole (222), the valve body (23) is provided with a second pressure-maintaining air hole (233), the main valve diaphragm (253) is provided with a third pressure-maintaining air hole (253A), the oxygen supply component (25) further includes a microporous valve plate (256), the microporous valve plate (256) is arranged between the main valve diaphragm (253) and the valve body (23), the pressure-maintaining air path (21) includes the first pressure-maintaining air hole (222), the second pressure-maintaining air hole (233), the microporous valve plate The micropores on the microporous valve plate (256) and the third pressure-maintaining air hole (253A), one end of the first pressure-maintaining air hole (222) is connected to the oxygen inlet connector (221), the other end of the first pressure-maintaining air hole (222) is connected to one end of the second pressure-maintaining air hole (233), the other end of the second pressure-maintaining air hole (233) is connected to the third pressure-maintaining air hole (253A) through the micropores on the microporous valve plate (256), and the third pressure-maintaining air hole (253A) is connected to the first air cavity (25A).

7. A nasal oxygen cannula for synchronous oxygen supply with breathing according to claim 6, characterized in that: It also includes a sealing ring (5), wherein the sealing ring (5) is arranged between the housing (22), the valve body (23) and the gear adjustment plate (26), and the sealing ring (5) is arranged between the valve body (23) and the upper cover (24).

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