Adjustable fixing device for nasal oxygen cannula

Abstract

The invention belongs to the technical field of nasal oxygen catheters, and discloses a nasal oxygen catheter adjustable fixing device which comprises a mixing box, the left side and the right side of the top end of the mixing box fixedly communicate with oxygen intubation tubes, the middle of the bottom end of the mixing box fixedly communicates with an air delivery pipe, and the bottom end of the air delivery pipe fixedly communicates with a second four-way valve. And an adjusting assembly is installed at the bottom end of the mixing box, a second four-way valve is arranged at the bottom end of the adjusting assembly, and the bottom end of the second four-way valve communicates with the other end of the gas conveying pipe. Through cooperation of the inflatable air bag and the timing air inlet valve and the timing air outlet valve which are opened regularly, in the whole oxygen therapy process, the device can replace an elastic band fixed to the face through the air bag which is expanded regularly, and the whole device can be switched regularly between the fixed positions of the air bag and the elastic band and the face; facial compression caused by the same fixed position for a long time is reduced, and pressure sores are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of nasal oxygen cannulas, and in particular relates to an adjustable fixing device for nasal oxygen cannulas. Background Art

[0002] Nasal oxygen cannula is widely used in hospitals and homes. In hospitals, it is often used to improve hypoxemia, such as patients with chronic obstructive pulmonary disease, interstitial lung disease, asthma, cystic fibrosis, heart failure and other diseases. At home, it is mainly used for long-term oxygen therapy, night oxygen therapy, etc. In addition, nasal oxygen cannula can also be used to supplement oxygen in high altitude areas. During the use of conventional nasal oxygen cannula, in order to prevent the nasal oxygen cannula from detaching from the patient's nasal cavity, a fixing device is usually used to assist in fixing.

[0003] Conventional auxiliary fixing devices for nasal oxygen tubes are mainly made of straps. When in use, the nasal oxygen tube is fixed to the face with the straps. Usually, the other end of the strap is fixed to the ear or the head. The nasal oxygen tube can be placed below the nasal cavity by the straps. However, this fixing method relies on the facial straps for a long time, which will cause pressure on the patient's face during long-term oxygen supply and easily lead to the occurrence of pressure sores.

[0004] At the same time, the current fixation process of the nasal oxygen cannula mainly relies on straps to fix it, which will cause the entire wearing pressure to be concentrated on the face. At the same time, due to individual differences, the size of the nose is different, and it is difficult to adapt the nasal oxygen cannula to different people when wearing it, thereby achieving accurate insertion of the nasal oxygen cannula into the nasal cavity, affecting the oxygen supply. Summary of the invention

[0005] The object of the present invention is to provide an adjustable fixing device for a nasal oxygen cannula to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical scheme: an adjustable fixing device for nasal oxygen tube, comprising a mixing box, the left and right sides of the top of the mixing box are fixedly connected with oxygen cannulas, the middle part of the bottom end of the mixing box is fixedly connected with an air supply pipe, the bottom end of the air supply pipe is fixedly connected with a No. 2 four-way valve, an adjusting component is installed at the bottom end of the mixing box, a No. 2 four-way valve is provided at the bottom end of the adjusting component, the bottom end of the No. 2 four-way valve is connected with the other end of the air supply pipe, the left and right ends of the No. 2 four-way valve are fixedly connected with branch pipes, the other end of the branch pipe is connected with the adjusting component, lateral guide rails are installed on the left and right sides of the mixing box, the lateral guide rails are movably connected with the left and right sides of the adjusting component, the ends of the two lateral guide rails away from the mixing box are installed with wearing components, and the ends of the wearing components away from the mixing box are installed with pressure relief components.

[0007] Before using the device, the inside of the mixing box and the oxygen cannula must be kept clean, and the pressure relief component must be kept in its initial state. At the same time, the oxygen cannula must be disinfected to ensure that no infection occurs.

[0008] As a further technical solution of the present invention, the bottom end of the No. 2 four-way valve is fixedly connected to a connecting pipe, the bottom end of the connecting pipe is fixedly connected to the No. 1 four-way valve, and the No. 1 four-way valve is connected to an external oxygen supply device.

[0009] As a further technical solution of the present invention, both left and right ends of the No. 1 four-way valve are fixedly connected with linkage hoses, and the other end of the linkage hose is connected to the pressure relief component.

[0010] As a further technical solution of the present invention, the wearing assembly includes two mounting seats, the two mounting seats are movably connected to one end of the lateral guide rail, elastic bands are installed at the ends of the two mounting seats away from each other, a strap is fixedly connected between the two elastic bands, and the end of the mounting seat away from the lateral guide rail is connected to the pressure relief assembly.

[0011] When the device is worn, the elastic band and the strap can be put on the head, that is, the elastic band can be fixed on the face. At this time, the mixing box can be fixed under the nasal cavity, and the oxygen cannula can be inserted into the inside of the two nasal cavities to complete the initial fixation process of the device. At the same time, the bottom end of the No. 1 four-way valve needs to be connected to the external oxygen supply device to complete the oxygen supply process;

[0012] When oxygen supply is needed, the external oxygen supply device can be turned on, and the valve at the top of the No. 1 four-way valve can be opened. At this time, oxygen can be input into the interior of the connecting pipe through the No. 1 four-way valve, and then input into the interior of the No. 2 four-way valve through the connecting pipe. It can also be exported through the gas supply pipe at the bottom of the No. 2 four-way valve, enter the interior of the mixing box, and finally be exported through the oxygen cannula to complete the oxygen supply process.

[0013] As a further technical solution of the present invention, the pressure relief assembly includes a timed air intake valve, one end of the timed air intake valve is connected to a mounting seat, the end of the timed air intake valve away from the mounting seat is fixedly connected to an airbag, the front side of the timed air intake valve is connected to the other end of a linkage hose, and the end of the airbag away from the timed air intake valve is fixedly connected to a timed exhaust valve.

[0014] As a further technical solution of the present invention, the timed intake valve and the timed exhaust valve are both one-way valves, and the valve direction of the timed intake valve is inwardly conductive and outwardly blocked, and the valve direction of the timed exhaust valve is outwardly conductive and inwardly blocked.

[0015] Under normal conditions, the entire device distributes the weight on the face through the elastic band and the straps. At the same time, during normal use of the device, the timed air intake valve can be kept open regularly. When the timed air intake valve is opened, oxygen can enter the interior of the linkage hose through the left and right ends of the No. 1 four-way valve, and enter the interior of the timed air intake valve through the linkage hose. As oxygen enters, the airbag expands until the outer side of the airbag contacts the face. At this time, the airbag can replace the contact between the elastic band and the face, reducing the long-term contact between the elastic band and the face.

[0016] After the airbag has expanded for a period of time, the timed air inlet valve closes automatically and the timed exhaust valve opens. The oxygen inside the airbag is discharged and the airbag no longer expands, that is, the elastic band contacts the face again. By periodically opening the timed air inlet valve, the fixed position of the device is regularly switched to reduce the occurrence of pressure sores.

[0017] By utilizing the oxygen input from the outside during oxygen delivery, and cooperating with an inflatable air bag, and two regularly opened timed air inlet valves and timed exhaust valves, the device can replace the elastic band that fixes the face with the regularly inflated air bag during the entire oxygen delivery process, so that the entire device can regularly switch between the fixed position of the air bag and the elastic band on the face, thereby reducing facial pressure caused by staying in the same fixed position for a long time and reducing the occurrence of pressure sores.

[0018] When the timed exhaust valve is opened, the timed intake valve should be in a closed state, and external oxygen is no longer input into the airbag. At this time, the oxygen inside the airbag can be automatically exported through the timed exhaust valve. When all the oxygen is exported, the volume of the airbag will shrink. At the same time, the exported oxygen can directly act on the face, and the flowing oxygen can act on the sweat on the face to reduce the production of sweat.

[0019] By reusing the regularly inflated airbags, controlling their regular expansion and contraction, utilizing the oxygen released during contraction, and applying the flowing oxygen directly to the face, the flowing air acts on the sweat, and by blowing regularly to keep the face dry, the problem of facial discomfort caused by sweat when used for a long time in traditional devices is avoided, thereby improving the wearing comfort of the device.

[0020] As a further technical solution of the present invention, the adjusting component includes an adjusting tube, a front fixing sleeve is fixedly connected to the middle part of the outer side surface of the adjusting tube, the bottom end of the front fixing sleeve is connected to the top end of the No. 2 four-way valve, and the left and right ends of the outer side surface of the adjusting tube are fixedly connected to the rear fixing sleeve, and the top end of the rear fixing sleeve is connected to the bottom end of the mixing box.

[0021] As a further technical solution of the present invention, adjustment plates are movably sleeved on the left and right sides of the inner cavity of the adjustment tube, and adjustment rods are fixedly installed on the relatively distant ends of the two adjustment plates. The end of the adjustment rod away from the adjustment plate passes through one end of the adjustment tube and is installed with a guide block.

[0022] As a further technical solution of the present invention, the guide block is movably connected to the lateral guide rail, and auxiliary clamps are fixedly installed on the top of the guide block, and the auxiliary clamps are located on the left and right sides of the mixing box.

[0023] As a further technical solution of the present invention, an air valve is fixedly connected to the bottom end of the regulating tube near the left and right sides, the other end of the air valve is connected to the branch pipe, and the outer side surface of the regulating rod is movably sleeved with a limit spring, and the left and right ends of the limit spring are connected to one end of the regulating plate and one end of the regulating tube.

[0024] At the same time, when the device is worn, the oxygen input into the No. 2 four-way valve can be exported through the branch pipes at the left and right ends. At this time, the oxygen can enter the gas supply valve through the branch pipes. With the input of oxygen, pressure can be applied to the two adjustment plates. At this time, the two adjustment plates are relatively close to each other, and the limit spring is compressed, driving the two adjustment rods relatively close to each other. At this time, the two guide blocks and the auxiliary splints are relatively close to each other until they contact the side wings of the nose, completing the secondary fixation process.

[0025] By reusing the oxygen input during oxygen delivery, the oxygen can enter the interior of the adjustment component while being delivered to the nasal cavity, and the adjustment component can be used to fix the side wings of the nose. The secondary fixation further improves stability, while reducing the wearing pressure of traditional devices on the face. It can also adapt to people with different nose sizes, complete adaptive adjustment, ensure the correct supply of oxygen, and improve the applicability of the device.

[0026] The beneficial effects of the present invention are as follows:

[0027] 1. The present invention utilizes the oxygen input from the outside during oxygen delivery, and cooperates with an inflatable air bag, and two regularly opened timed air inlet valves and a regularly opened timed exhaust valve, so that during the entire oxygen delivery process, the device can replace the elastic band for fixing the face with the regularly inflated air bag, so that the entire device can regularly switch between the fixed positions of the air bag and the elastic band and the face, thereby reducing facial pressure caused by staying in the same fixed position for a long time and reducing the occurrence of pressure sores.

[0028] 2. The present invention reutilizes the oxygen input during oxygen delivery, so that while the oxygen is being delivered to the nasal cavity, the oxygen can enter the interior of the adjustment component, and the adjustment component can be used to fix the side wings of the nose. The secondary fixation further improves the stability, while reducing the wearing pressure of the traditional device on the face. It can also adapt to people with different nose sizes, complete adaptive adjustment, ensure the correct supply of oxygen, and improve the applicability of the device.

[0029] 3. The present invention reuses the airbag that is inflated periodically, controls its periodic expansion and contraction, utilizes the oxygen released when it contracts, and directly applies the flowing oxygen to the face, so as to act on the sweat through the flowing air and keep the face dry through regular blowing, thereby avoiding the problem of facial discomfort caused by sweat when traditional devices are used for a long time and improving the wearing comfort of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a separate schematic diagram of the wearing assembly structure of the present invention;

[0032] Figure 3 It is a schematic diagram of the coordination of the No. 1 four-way valve, the linkage hose and the pressure relief assembly structure of the present invention;

[0033] Figure 4 It is a separate cross-sectional schematic diagram of the pressure relief assembly structure of the present invention;

[0034] Figure 5 It is a schematic diagram of the coordination of the structure of the No. 1 four-way valve and the No. 2 four-way valve of the present invention;

[0035] Figure 6 It is a schematic diagram of the coordination of the mixing box and the oxygen cannula structure of the present invention;

[0036] Figure 7 It is an exploded schematic diagram of the lateral guide rail and the adjustment assembly structure of the present invention;

[0037] Figure 8 It is a partial cross-sectional schematic diagram of the regulating assembly structure of the present invention.

[0038] In the figure: 1. mixing box; 2. oxygen cannula; 3. lateral guide rail; 4. adjustment assembly; 401. guide block; 402. auxiliary splint; 403. adjustment tube; 404. front fixing sleeve; 405. rear fixing sleeve; 406. adjustment plate; 407. adjustment rod; 408. limit spring; 409. gas supply valve; 5. No. 1 four-way valve; 6. No. 2 four-way valve; 7. connecting pipe; 8. gas supply pipe; 9. branch pipe; 10. linkage hose; 11. pressure relief assembly; 111. timed air inlet valve; 112. timed exhaust valve; 113. air bag; 12. wearing assembly; 121. mounting seat; 122. elastic band; 123. strap. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figures 1 to 8 As shown, in an embodiment of the present invention, an adjustable fixing device for a nasal oxygen tube comprises a mixing box 1, wherein the left and right sides of the top of the mixing box 1 are fixedly connected with an oxygen cannula 2, the middle part of the bottom end of the mixing box 1 is fixedly connected with an air supply pipe 8, the bottom end of the air supply pipe 8 is fixedly connected with a No. 2 four-way valve 6, an adjusting component 4 is installed at the bottom end of the mixing box 1, a No. 2 four-way valve 6 is provided at the bottom end of the adjusting component 4, the bottom end of the No. 2 four-way valve 6 is connected with the other end of the air supply pipe 8, the left and right ends of the No. 2 four-way valve 6 are fixedly connected with a branch pipe 9, the other end of the branch pipe 9 is connected with the adjusting component 4, lateral guide rails 3 are installed at the left and right sides of the mixing box 1, the lateral guide rails 3 are movably connected with the left and right sides of the adjusting component 4, a wearing component 12 is installed at one end of the two lateral guide rails 3 away from the mixing box 1, and a pressure relief component 11 is installed at one end of the wearing component 12 away from the mixing box 1.

[0041] Before using the device, the inside of the mixing box 1 and the oxygen cannula 2 must be kept clean, and the pressure relief component 11 must be kept in an initial state. At the same time, the oxygen cannula 2 must be disinfected to ensure that no infection is caused.

[0042] like Figure 1 and Figure 2 as well as Figure 3 and Figure 5As shown, the bottom end of the No. 2 four-way valve 6 is fixedly connected with a connecting pipe 7, the bottom end of the connecting pipe 7 is fixedly connected with a No. 1 four-way valve 5, the No. 1 four-way valve 5 is connected with an external oxygen supply device, the left and right ends of the No. 1 four-way valve 5 are fixedly connected with a linkage hose 10, the other end of the linkage hose 10 is connected with a pressure relief component 11, the wearing component 12 includes two mounting seats 121, the two mounting seats 121 are movably connected with one end of the lateral guide rail 3, the ends of the two mounting seats 121 away from each other are installed with elastic bands 122, a strap 123 is fixedly connected between the two elastic bands 122, and the end of the mounting seat 121 away from the lateral guide rail 3 is connected to the pressure relief component 11.

[0043] When the device is worn, the elastic band 122 and the strap 123 can be sleeved on the head, that is, the elastic band 122 can be fixed on the face. At this time, the mixing box 1 can be fixed below the nasal cavity, and the oxygen cannula 2 can be inserted into the inside of the two nasal cavities to complete the initial fixing process of the device. At the same time, the bottom end of the No. 1 four-way valve 5 needs to be connected to the external oxygen supply device to complete the oxygen supply process;

[0044] When oxygen supply is needed, the external oxygen supply device can be turned on, and the valve at the top of the No. 1 four-way valve 5 can be opened. At this time, oxygen can be input into the interior of the connecting pipe 7 through the No. 1 four-way valve 5, and input into the interior of the No. 2 four-way valve 6 through the connecting pipe 7, and can be exported through the gas supply pipe 8 at the bottom end of the No. 2 four-way valve 6, and enter the interior of the mixing box 1, and finally exported through the oxygen cannula 2 to complete the oxygen supply process.

[0045] like Figure 1 and Figure 3 as well as Figure 4 As shown, the pressure relief assembly 11 includes a timed air intake valve 111, one end of the timed air intake valve 111 is connected to a mounting seat 121, one end of the timed air intake valve 111 away from the mounting seat 121 is fixedly connected to an air bag 113, the front of the timed air intake valve 111 is connected to the other end of the linkage hose 10, one end of the air bag 113 away from the timed air intake valve 111 is fixedly connected to a timed exhaust valve 112, the timed air intake valve 111 and the timed exhaust valve 112 are both one-way valves, and the valve direction of the timed air intake valve 111 is inward conduction and outward cutoff, and the valve direction of the timed exhaust valve 112 is outward conduction and inward cutoff.

[0046] Embodiment: Under normal conditions, the entire device shares the weight on the face through the elastic band 122 and the strap 123. At the same time, the timed air intake valve 111 can be kept open regularly during normal use of the device. When the timed air intake valve 111 is opened, oxygen can enter the interior of the linkage hose 10 through the left and right ends of the No. 1 four-way valve 5, and enter the interior of the timed air intake valve 111 through the linkage hose 10. As oxygen enters, the airbag 113 expands until the outer side of the airbag 113 contacts the face. At this time, the airbag 113 can replace the contact between the elastic band 122 and the face, reducing the long-term contact between the elastic band 122 and the face.

[0047] After the airbag 113 has expanded for a period of time, the timed air inlet valve 111 is automatically closed, and the timed air exhaust valve 112 is opened. The oxygen inside the airbag 113 is discharged, and the airbag 113 no longer expands, that is, the elastic band 122 contacts the face again. By periodically opening the timed air inlet valve 111, the fixed position of the device is regularly switched to reduce the occurrence of pressure sores.

[0048] By utilizing the oxygen input from the outside during oxygen delivery, and cooperating with the inflatable air bag 113, and two regularly opened timed air inlet valves 111 and timed exhaust valves 112, the device can replace the elastic band 122 for fixing the face with the regularly inflated air bag 113 during the entire oxygen delivery process, so that the entire device can regularly switch between the fixed positions of the air bag 113 and the elastic band 122 and the face, thereby reducing facial pressure caused by staying in the same fixed position for a long time and reducing the occurrence of pressure sores.

[0049] When the timed exhaust valve 112 is opened, the timed intake valve 111 should be in a closed state, and external oxygen is no longer input into the airbag 113. At this time, the oxygen inside the airbag 113 can be automatically exported through the timed exhaust valve 112. When all the oxygen is exported, the volume of the airbag 113 is reduced. At the same time, the exported oxygen can directly act on the face, and the flowing oxygen can act on the sweat on the face to reduce the production of sweat.

[0050] By reusing the airbag 113 that is inflated periodically, by controlling its periodic expansion and contraction, utilizing the oxygen released during its contraction, and allowing the flowing oxygen to act directly on the face, the flowing air acts on the sweat, and by blowing regularly to keep the face dry, the problem of facial discomfort caused by sweat when using traditional devices for a long time is avoided, and the wearing comfort of the device is improved.

[0051] like Figure 1 and Figure 7 as well as Figure 8As shown, the regulating assembly 4 includes a regulating tube 403, a front fixing sleeve 404 is fixedly sleeved in the middle of the outer side of the regulating tube 403, the bottom end of the front fixing sleeve 404 is connected to the top of the No. 2 four-way valve 6, the left and right ends of the outer side of the regulating tube 403 are fixedly sleeved with rear fixing sleeves 405, the top of the rear fixing sleeve 405 is connected to the bottom of the mixing box 1, and the left and right sides of the inner cavity of the regulating tube 403 are movably sleeved with regulating plates 406, and the ends of the two regulating plates 406 that are relatively far away are fixedly installed with regulating rods 407, and the ends of the regulating rods 407 that are far away from the regulating plates 406 penetrate A guide block 401 is installed at one end of the regulating tube 403, and the guide block 401 is movably connected to the lateral guide rail 3. Auxiliary splints 402 are fixedly installed on the top of the guide block 401, and the auxiliary splints 402 are located on the left and right sides of the mixing box 1. The bottom end of the regulating tube 403 near the left and right sides is fixedly connected with a gas valve 409, and the other end of the gas valve 409 is connected to the branch pipe 9. The outer side surface of the regulating rod 407 is movably sleeved with a limit spring 408, and the left and right ends of the limit spring 408 are connected to one end of the regulating plate 406 and one end of the regulating tube 403.

[0052] Embodiment: When the device is worn, the oxygen input into the No. 2 four-way valve 6 can be exported through the branch pipes 9 at the left and right ends. At this time, the oxygen can enter the gas supply valve 409 through the branch pipes 9. With the input of oxygen, pressure can be applied to the two adjustment plates 406. At this time, the two adjustment plates 406 are relatively close to each other, and the limit spring 408 is compressed, and at the same time, the two adjustment rods 407 are driven to be relatively close to each other. At this time, the two guide blocks 401 and the auxiliary splint 402 are relatively close to each other until they contact the side wings of the nose, completing the secondary fixation process.

[0053] By reusing the oxygen input during oxygen delivery, the oxygen can enter the interior of the adjustment component 4 while being delivered to the nasal cavity, and the adjustment component 4 can fix the side wings of the nose at both ends. The secondary fixation further improves the stability, and at the same time reduces the wearing pressure of the traditional device on the face. It can also adapt to people with different nose sizes, complete adaptive adjustment, ensure the correct supply of oxygen, and improve the applicability of the device.

[0054] Working principle and usage process:

[0055] Before use, the inside of the mixing box 1 and the oxygen cannula 2 must be kept clean, and the pressure relief component 11 must be kept in an initial state. The oxygen cannula 2 must also be disinfected to ensure that no infection occurs.

[0056] When the device is worn, the elastic band 122 and the strap 123 can be sleeved on the head, that is, the elastic band 122 can be fixed on the face. At this time, the mixing box 1 can be fixed below the nasal cavity, and the oxygen cannula 2 can be inserted into the inside of the two nasal cavities to complete the initial fixing process of the device. At the same time, the bottom end of the No. 1 four-way valve 5 needs to be connected to the external oxygen supply device to complete the oxygen supply process;

[0057] When oxygen delivery is required, the external oxygen supply device can be turned on, and the valve at the top of the No. 1 four-way valve 5 can be opened. At this time, oxygen can be input into the interior of the connecting pipe 7 through the No. 1 four-way valve 5, and then input into the interior of the No. 2 four-way valve 6 through the connecting pipe 7, and can be exported through the gas delivery pipe 8 at the bottom end of the No. 2 four-way valve 6, and enter the interior of the mixing box 1, and finally exported through the oxygen cannula 2, completing the oxygen delivery process;

[0058] At the same time, when the device is worn, the oxygen input into the No. 2 four-way valve 6 can be exported through the branch pipes 9 at the left and right ends. At this time, the oxygen can enter the gas delivery valve 409 through the branch pipes 9. With the input of oxygen, pressure can be applied to the two adjustment plates 406. At this time, the two adjustment plates 406 are relatively close to each other, and the limit spring 408 is compressed, and the two adjustment rods 407 are driven to be relatively close to each other. At this time, the two guide blocks 401 and the auxiliary splint 402 are relatively close to each other until they contact the side wings of the nose, completing the secondary fixation process;

[0059] Under normal conditions, the entire device distributes the weight on the face through the elastic band 122 and the strap 123. At the same time, the timed air intake valve 111 can be kept open regularly during normal use of the device. When the timed air intake valve 111 is opened, oxygen can enter the interior of the linkage hose 10 through the left and right ends of the No. 1 four-way valve 5, and enter the interior of the timed air intake valve 111 through the linkage hose 10. As oxygen enters, the airbag 113 expands until the outer side of the airbag 113 contacts the face. At this time, the airbag 113 can replace the contact between the elastic band 122 and the face, reducing the long-term contact between the elastic band 122 and the face.

[0060] When the airbag 113 expands for a period of time, the timed air inlet valve 111 is automatically closed, and the timed air exhaust valve 112 is opened. At this time, the oxygen inside the airbag 113 is discharged. At this time, the airbag 113 no longer expands, that is, the elastic band 122 contacts the face again. By regularly opening the timed air inlet valve 111, the fixed position of the device is regularly switched to reduce the occurrence of pressure sores.

[0061] When the timed exhaust valve 112 is opened, the timed intake valve 111 should be in a closed state, and external oxygen is no longer input into the airbag 113. At this time, the oxygen inside the airbag 113 can be automatically exported through the timed exhaust valve 112. When all the oxygen is exported, the volume of the airbag 113 is reduced. At the same time, the exported oxygen can directly act on the face, and the flowing oxygen can act on the sweat on the face to reduce the production of sweat.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable fixing device for a nasal oxygen cannula, comprising a mixing box (1), characterized in that: The left and right sides of the top of the mixing box (1) are fixedly connected to oxygen cannulas (2); the middle of the bottom of the mixing box (1) is fixedly connected to an air supply pipe (8); the bottom end of the air supply pipe (8) is fixedly connected to a No. 2 four-way valve (6); an adjusting component (4) is installed at the bottom end of the mixing box (1); the bottom end of the adjusting component (4) is provided with a No. 2 four-way valve (6); the bottom end of the No. 2 four-way valve (6) is connected to the other end of the air supply pipe (8); the No. 2 four-way valve (6) is connected to the bottom end of the mixing box (1); The left and right ends of the mixing box (1) are both fixedly connected with branch pipes (9), the other end of the branch pipe (9) is connected with the adjustment component (4), the left and right sides of the mixing box (1) are both installed with lateral guide rails (3), the lateral guide rails (3) and the left and right sides of the adjustment component (4) are movably connected, the ends of the two lateral guide rails (3) away from the mixing box (1) are both installed with wearing components (12), and the ends of the wearing components (12) away from the mixing box (1) are both installed with pressure relief components (11).

2. The adjustable nasal oxygen cannula fixing device according to claim 1, characterized in that: The bottom end of the No. 2 four-way valve (6) is fixedly connected to a connecting pipe (7), the bottom end of the connecting pipe (7) is fixedly connected to the No. 1 four-way valve (5), and the No. 1 four-way valve (5) is connected to an external oxygen supply device.

3. The adjustable fixing device for nasal oxygen cannula according to claim 2, characterized in that: The left and right ends of the No. 1 four-way valve (5) are both fixedly connected with a linkage hose (10), and the other end of the linkage hose (10) is connected to a pressure relief assembly (11).

4. The adjustable nasal oxygen cannula fixing device according to claim 3, characterized in that: The wearing assembly (12) comprises two mounting seats (121), the two mounting seats (121) are movably connected to one end of the lateral guide rail (3), the ends of the two mounting seats (121) away from each other are both equipped with elastic bands (122), a binding band (123) is fixedly connected between the two elastic bands (122), and the end of the mounting seat (121) away from the lateral guide rail (3) is connected to the pressure relief assembly (11).

5. The adjustable nasal oxygen cannula fixing device according to claim 4, characterized in that: The pressure relief assembly (11) comprises a timed air intake valve (111), one end of the timed air intake valve (111) is connected to a mounting seat (121), one end of the timed air intake valve (111) away from the mounting seat (121) is fixedly connected to an air bag (113), the front side of the timed air intake valve (111) is connected to the other end of the linkage hose (10), and one end of the air bag (113) away from the timed air intake valve (111) is fixedly connected to a timed exhaust valve (112).

6. The adjustable nasal oxygen cannula fixing device according to claim 5, characterized in that: The timing air intake valve (111) and the timing air exhaust valve (112) are both one-way valves, and the valve direction of the timing air intake valve (111) is inwardly conductive and outwardly closed, while the valve direction of the timing air exhaust valve (112) is outwardly conductive and inwardly closed.

7. The adjustable fixing device for nasal oxygen cannula according to claim 1, characterized in that: The regulating assembly (4) comprises a regulating tube (403), a front fixing sleeve (404) being fixedly sleeved in the middle of the outer side surface of the regulating tube (403), the bottom end of the front fixing sleeve (404) being connected to the top end of the No. 2 four-way valve (6), and a rear fixing sleeve (405) being fixedly sleeved at both left and right ends of the outer side surface of the regulating tube (403), the top end of the rear fixing sleeve (405) being connected to the bottom end of the mixing box (1).

8. The adjustable nasal oxygen cannula fixing device according to claim 7, characterized in that: Adjustment plates (406) are movably sleeved on both the left and right sides of the inner cavity of the adjustment tube (403), and adjustment rods (407) are fixedly installed on the relatively distant ends of the two adjustment plates (406). The end of the adjustment rod (407) away from the adjustment plate (406) passes through one end of the adjustment tube (403) and is installed with a guide block (401).

9. The adjustable nasal oxygen cannula fixing device according to claim 8, characterized in that: The guide block (401) is movably connected to the lateral guide rail (3), and an auxiliary clamping plate (402) is fixedly mounted on the top of each guide block (401), and the auxiliary clamping plate (402) is located on the left and right sides of the mixing box (1).

10. The adjustable nasal oxygen cannula fixing device according to claim 9, characterized in that: The bottom end of the regulating tube (403) is fixedly connected to a gas supply valve (409) at positions near the left and right sides. The other end of the gas supply valve (409) is connected to the branch pipe (9). The outer side surface of the regulating rod (407) is movably sleeved with a limit spring (408). The left and right ends of the limit spring (408) are connected to one end of the regulating plate (406) and one end of the regulating tube (403).

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