Adjustable fixing device for nasal oxygen tube

Abstract

The present invention belongs to the technical field of nasal oxygen cannulae and discloses an adjustable fixing device for nasal oxygen cannulae, comprising a mixing box, wherein the left and right sides of the top of the mixing box are fixedly connected to oxygen cannulas, the middle portion of the bottom end of the mixing box is fixedly connected to an air supply pipe, the bottom end of the air supply pipe is fixedly connected to a No. 2 four-way valve, and an adjustment assembly is installed at the bottom end of the mixing box, the bottom end of the adjustment assembly is provided with a No. 2 four-way valve, and the bottom end of the No. 2 four-way valve is connected to the other end of the air supply pipe. The present invention uses an inflatable airbag and two regularly opened timed air inlet valves and timed exhaust valves to enable the device to replace the elastic band that fixes the face during the entire oxygen supply process with the regularly inflated airbag, so that the entire device can regularly switch between the fixed positions of the airbag and the elastic band on the face, reducing facial pressure caused by prolonged use of the same fixed position and reducing the occurrence of pressure sores.

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 cannulas are widely used in both hospitals and homes. In hospitals, they are often used to improve hypoxemia in patients with conditions such as chronic obstructive pulmonary disease, interstitial lung disease, asthma, cystic fibrosis, and heart failure. At home, they are primarily used for long-term oxygen therapy and nocturnal oxygen therapy. Furthermore, nasal oxygen cannulas can be used for supplemental oxygen at high altitudes. Conventional nasal oxygen cannulas are often secured with a device to prevent them from becoming detached from the patient's nasal cavity.

[0003] Conventional auxiliary fixation devices for nasal oxygen tubes are mainly made of straps. When in use, the nasal oxygen tube is fixed to the face with the strap. 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 through the fixation of the strap. However, this fixation method relies on the facial strap for fixation 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 nasal oxygen tube is mainly fixed by a strap, 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, making it difficult to adapt the nasal oxygen tube to different people when wearing it, and thus achieving accurate insertion of the nasal oxygen tube 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 objectives, the present invention provides the following technical solutions: an adjustable fixing device for a nasal oxygen tube, comprising a mixing box, wherein 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 to 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 assembly.

[0010] As a further technical solution of the present invention, the wearing assembly includes two mounting seats, which are movably connected to one end of the lateral guide rail, and elastic bands are installed at the ends of the two mounting seats away from each other, and 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 wearing the device, 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 be discharged through the gas pipe at the bottom end of the No. 2 four-way valve, enter the interior of the mixing box, and finally be discharged 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 the mounting seat, the end of the timed air intake valve away from the mounting seat is fixedly connected to an airbag, the front of the timed air intake valve is connected to the other end of the 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 inward conduction and outward cutoff, and the valve direction of the timed exhaust valve is outward conduction and inward cutoff.

[0015] Under normal conditions, the entire device distributes its weight on the face through the elastic band and straps. Meanwhile, 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 then 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 point, the airbag replaces the contact between the elastic band and the face, reducing the prolonged contact between the elastic band and the face.

[0016] After the airbag has expanded for a period of time, the timed air inlet valve will automatically close and the timed exhaust valve will open. The oxygen inside the airbag will be discharged. The airbag will no longer expand, and the elastic band will contact the face again. By regularly opening the timed air inlet valve, the fixed position of the device can be regularly switched to reduce the occurrence of pressure sores.

[0017] By utilizing the oxygen input from the outside during oxygen delivery, and coordinating it with an inflatable air bag, as well as 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 positions of the air bag and elastic band on the face, 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 the closed state, and the external oxygen is no longer input into the airbag. At this time, the oxygen inside the airbag can be automatically discharged through the timed exhaust valve. When all the oxygen is discharged, the volume of the airbag will shrink. At the same time, the discharged 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 using traditional devices for a long time is avoided, thereby improving the wearing comfort of the device.

[0020] As a further technical solution of the present invention, the adjusting assembly includes an adjusting tube, the middle part of the outer side surface of the adjusting tube is fixedly connected with a front fixing sleeve, the bottom end of the front fixing sleeve is connected to the top 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 with a 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 connected on both sides of the inner cavity of the adjustment tube, and adjustment rods are fixedly installed on the relatively far 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 blocks are movably connected to the side guide rails, and auxiliary splints are fixedly installed on the top ends of the guide blocks. The auxiliary splints are located on the left and right sides of the mixing box.

[0023] As a further technical solution of the present invention, an air supply valve is fixedly connected to the bottom end of the regulating tube near the left and right sides, the other end of the air supply valve is connected to the branch pipe, and the outer side surface of the regulating rod is movably connected to 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 discharged through the branch pipes at both 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, which drives the two adjustment rods relatively close to each other. At this time, the two guide blocks and the auxiliary splint 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 fix the side wings of the nose at both ends. Through secondary fixation, the stability is further improved, and at the same time, the wearing pressure of traditional devices on the face can be reduced. 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 is combined with an inflatable air bag, as well as two regularly opened timed air inlet valves and a regularly opened timed exhaust valve. During the entire oxygen delivery process, the device can replace the elastic band that fixes the face with the regularly inflated air bag. The entire device can regularly switch between the fixed positions 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.

[0028] 2. The present invention recycles the oxygen input during oxygen delivery, so that while the oxygen is being delivered to the nasal cavity, it can also enter the interior of the adjustment component and fix the nose wings at both ends through the action of the adjustment component. The secondary fixation further improves stability and reduces 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.

[0029] 3. The present invention reuses the airbag that is inflated periodically, controls its periodic expansion and contraction, utilizes the oxygen released during its contraction, and directly applies the flowing oxygen to the face, so that the flowing air acts on the sweat. The face is kept dry by regular blowing, avoiding the problem of facial discomfort caused by sweat when traditional devices are used for a long time, thereby 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 A separate schematic diagram of the structure of the wearing assembly of the present invention;

[0032] Figure 3 This is a schematic diagram of the coordination structure of the No. 1 four-way valve, the linkage hose, and the pressure relief assembly 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 This is a schematic diagram of the coordination of the No. 1 four-way valve and the No. 2 four-way valve structure of the present invention;

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

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

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

[0038] In the figure: 1. Mixing box; 2. Oxygen intubation; 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. Airbag; 12. Wearing assembly; 121. Mounting seat; 122. Elastic band; 123. Strap. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts 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 includes a mixing box 1, and 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, and the bottom end of the air supply pipe 8 is fixedly connected with a No. 2 four-way valve 6, and the bottom end of the mixing box 1 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, and the left and right ends of the No. 2 four-way valve 6 are fixedly connected with a branch pipe 9, and the other end of the branch pipe 9 is connected to the adjusting component 4. Lateral guide rails 3 are installed on the left and right sides of the mixing box 1, and the lateral guide rails 3 are movably connected to the left and right sides of the adjusting component 4. A wearing component 12 is installed on the end of the two lateral guide rails 3 away from the mixing box 1, and a pressure relief component 11 is installed on the 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 its initial state. The oxygen cannula 2 must also be disinfected to ensure that no infection occurs.

[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 to a connecting pipe 7, and the bottom end of the connecting pipe 7 is fixedly connected to the No. 1 four-way valve 5, which is connected to the external oxygen supply device. The left and right ends of the No. 1 four-way valve 5 are fixedly connected to a linkage hose 10, and the other end of the linkage hose 10 is connected to the pressure relief component 11. The wearing component 12 includes two mounting seats 121, and the two mounting seats 121 are movably connected to one end of the lateral guide rail 3. Elastic bands 122 are installed at the ends of the two mounting seats 121 away from each other, and a strap 123 is fixedly connected between the two elastic bands 122. 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 to 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 be 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 the mounting seat 121, the 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, and the 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 cut-off, and the valve direction of the timed exhaust valve 112 is outward conduction and inward cut-off.

[0046] Embodiment: 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, during normal use of the device, the timed air inlet valve 111 can be kept open regularly. When the timed air inlet 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 then enter the interior of the timed air inlet valve 111 through the linkage hose 10. As the 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. 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, thereby reducing 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, as well as 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 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.

[0049] When the timed exhaust valve 112 is opened, the timed air inlet 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 discharged through the timed exhaust valve 112. When all the oxygen is discharged, the volume of the airbag 113 is reduced. At the same time, the discharged oxygen can directly act on the face, and the flowing oxygen acts on the sweat on the face to reduce the production of sweat.

[0050] By reusing the airbag 113 that is inflated periodically, 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, thereby improving the wearing comfort of the device.

[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 connected to 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 connected to the rear fixing sleeve 405, the top of the rear fixing sleeve 405 is connected to the bottom end of the mixing box 1, and the left and right sides of the inner cavity of the regulating tube 403 are movably connected 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 away from the regulating plates 406 are penetrated. One end of the regulating tube 403 is passed through and a guide block 401 is installed. The guide block 401 is movably connected to the lateral guide rail 3. The top of the guide block 401 is fixedly installed with an auxiliary splint 402. The auxiliary splint 402 is 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 an air valve 409. The other end of the air 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.

[0052] Embodiment: When the device is worn, the oxygen input into the No. 2 four-way valve 6 can be discharged 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 pipe 9. As the oxygen is input, 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, which drives the two adjustment rods 407 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. Through secondary fixation, the stability is further improved, and at the same time, the wearing pressure of the traditional device on the face can be reduced. 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 mixing box 1 and the oxygen cannula 2 must be kept clean, and the pressure relief assembly 11 must be kept in its initial state. The oxygen cannula 2 must also be disinfected to prevent infection.

[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 to 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 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 then input into the interior of the No. 2 four-way valve 6 through the connecting pipe 7, and can be output through the gas 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 be output through the oxygen cannula 2, completing the oxygen supply process;

[0058] At the same time, when the device is worn, the oxygen input to the No. 2 four-way valve 6 can be discharged through the branch pipes 9 at both ends. At this time, the oxygen can enter the gas supply valve 409 through the branch pipes 9. As the oxygen is input, 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, which drives the two adjustment rods 407 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, during normal use of the device, the timed air inlet valve 111 can be kept open regularly. When the timed air inlet 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 then enter the interior of the timed air inlet valve 111 through the linkage hose 10. As the 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] After the airbag 113 has expanded for a period of time, the timed air inlet valve 111 automatically closes and the timed air outlet valve 112 opens. The oxygen inside the airbag 113 is then exhausted and the airbag 113 no longer expands. The elastic band 122 contacts the face again. By periodically opening the timed air inlet valve 111, the fixed position of the device is periodically switched, thereby reducing the occurrence of pressure sores.

[0061] When the timed exhaust valve 112 is opened, the timed air inlet 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 discharged through the timed exhaust valve 112. When all the oxygen is discharged, the volume of the airbag 113 is reduced. At the same time, the discharged oxygen can directly act on the face, and the flowing oxygen acts on the sweat on the face to reduce the production of sweat.

[0062] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the 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), the bottom end of the mixing box (1) is installed with an adjustment component (4), the bottom end of the adjustment 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), and 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 a branch pipe (9), the other end of the branch pipe (9) is connected to the adjustment component (4), the left and right sides of the mixing box (1) are both installed with a lateral guide rail (3), the lateral guide rail (3) and the left and right sides of the adjustment component (4) are movably connected, and the ends of the two lateral guide rails (3) away from the mixing box (1) are both installed with a wearing component (12), and the ends of the wearing component (12) away from the mixing box (1) are both installed with a pressure relief component (11); The pressure relief assembly (11) comprises a timing air intake valve (111), one end of the timing air intake valve (111) is connected to a mounting seat (121), one end of the timing air intake valve (111) away from the mounting seat (121) is fixedly connected to an air bag (113), the front face of the timing 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 timing air intake valve (111) is fixedly connected to a timing exhaust valve (112); 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 inward conduction and outward cut-off, while the valve direction of the timing air exhaust valve (112) is outward conduction and inward cut-off; The regulating assembly (4) comprises a regulating tube (403), a front fixing sleeve (404) is fixedly sleeved on the middle portion of the outer side surface of the regulating tube (403), the bottom end of the front fixing sleeve (404) is connected to the top end of the No. 2 four-way valve (6), and a rear fixing sleeve (405) is fixedly sleeved on both the left and right ends of the outer side surface of the regulating tube (403), and the top end of the rear fixing sleeve (405) is connected to the bottom end of the mixing box (1); 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 ends of the two adjustment plates (406) that are relatively far away from each other. The end of the adjustment rod (407) that is away from the adjustment plate (406) passes through one end of the adjustment tube (403) and is installed with a guide block (401); The guide block (401) is movably connected to the lateral guide rail (3), and auxiliary clamping plates (402) are fixedly installed on the top of each guide block (401), and the auxiliary clamping plates (402) are located on the left and right sides of the mixing box (1); The bottom end of the regulating tube (403) is fixedly connected to a gas delivery valve (409) at positions near the left and right sides. The other end of the gas delivery valve (409) is connected to the branch pipe (9). The outer side surface of the regulating rod (407) is movably connected to 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).

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

4. The adjustable fixing device for a nasal oxygen cannula 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).

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