Oxygen inhalation tube fixing device
Through the spiral expanded nasal expansion plate and threaded snorkel structure, combined with the mandible positioning device and the nasal wing positioning device, the stability and comfort of the oxygen suction tube fixing device are solved, the stable fixation of the oxygen suction tube and the comfort of the patient are achieved, and oxygen leakage and skin damage are avoided.
Patent Information
- Application Number
- CN202510725044.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-03
- Publication Date
- 2025-07-25
AI Technical Summary
The existing oxygen-absorbing tube fixing devices have problems such as insufficient stability, poor comfort and single adaptability, resulting in reduced oxygen therapy efficiency, increased care costs and poor patient experience.
The spiral-expanded nasal expansion plate and threaded snorkel structure are adopted, combined with the mandible positioning device and the nasal wing positioning device, expanding in the nasal cavity through the nasal cavity, and the mandible positioning device is fixed at the jaw to ensure the stability of the oxygen suction tube in the nasal cavity and the jaw, and the expansion and contraction of the cheek splint is achieved through the rack and rack system, providing multi-directional fixation.
It improves the intranasal stability of the oxygen inhaler tube, avoids oxygen leakage, reduces the risk of skin damage, ensures the patient's comfort and oxygen therapy effect, and does not affect normal diet.
Smart Images

Figure CN120361377A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of oxygen inhalation tube fixing devices, and specifically refers to an oxygen inhalation tube fixing device. Background Art
[0002] Oxygen inhalation therapy is a commonly used auxiliary means in clinical medicine and is widely used in scenarios such as respiratory diseases, postoperative recovery, and critical care rescue. As the core component for delivering oxygen, the oxygen inhalation tube needs to be attached to the patient's face through a nasal catheter or a face mask, and its fixing stability directly affects the treatment effect and patient comfort.
[0003] Most medical institutions use medical tape to directly paste the oxygen inhalation tube on the patient's cheek or behind the ear. However, long-term contact of the tape with the skin is likely to cause allergic reactions, local pressure sores, or skin damage, especially for infants, elderly patients, and those with sensitive skin. Some nasal catheter designs rely on nasal clips for fixation, but the adjustment range of the nasal clips is limited, making it difficult to adapt to different nasal shapes and prone to oxygen leakage due to poor fitting. In the prior art, oxygen inhalation tube fixing devices generally have problems such as insufficient stability, poor comfort, and single adaptability, which may lead to reduced oxygen therapy efficiency, increased nursing costs, and poor patient experience. Summary of the Invention
[0004] In view of the above situation, in order to reduce the damage to the skin during the fixation of the oxygen inhalation tube, ensure the stability of the oxygen inhalation tube during oxygen inhalation, and prevent the oxygen inhalation tube from affecting the patient's normal diet, the present invention provides an oxygen inhalation tube fixing device. The nasal structure is automatically expanded through a spiral expansion structure, increasing the stability of the nasal catheter part in the nasal cavity. At the same time, the oxygen tube behind the ear is limited, causing the oxygen inhalation tube to wrap around the mandible and avoiding the oxygen inhalation tube from blocking the mouth.
[0005] The technical solution adopted by the present invention is as follows: An oxygen inhalation tube fixing device provided by the present invention includes a nasal cavity fixing device, a mandible limiting device, and an oxygen inhalation tube. The mandible limiting device is snap-fitted to the patient's mandible, the nasal cavity fixing device is snap-fitted into the nostrils, and the oxygen inhalation tube is snap-fitted into the nasal cavity fixing device. In order to prevent the oxygen inhalation tube from wandering on the cheek and being squeezed by the back of the head, resulting in a reduction in the diameter of the oxygen inhalation tube, the oxygen inhalation tube is snap-fitted into the mandible limiting device. The nasal cavity fixing device includes a nostril expansion device and a nasal wing limiting device. The nostril expansion device is snap-fitted into the nostrils, and the nasal wing limiting device is snap-fitted and slidably connected to the nostril expansion device.
[0006] Further, the nostril expansion device includes a nostril limiting ring, a nasal cavity expansion plate, a threaded ventilation tube, and a sealing shaft sleeve. The nostril limiting ring is snap-fitted to the nasal wing limiting device and is placed outside the nostrils. The nasal cavity expansion plate is fixedly installed on the nostril limiting ring. The threaded ventilation tube is threadedly connected to the nasal cavity expansion plate, and the sealing shaft sleeve is snap-fitted and rotatably connected to the threaded ventilation tube.
[0007] Furthermore, the nasal cavity expansion plate is provided with threaded grooves. When a group of the nasal cavity expansion plates are expanded by a threaded ventilation tube, they form a cylindrical structure. When a group of the nasal cavity expansion plates are not expanded by the threaded ventilation tube, they present a conical shape. There is a gap between adjacent groups of nasal cavity expansion plates. The nasal cavity expansion plate is made of rubber material, and the top wall of the nasal cavity expansion plate is provided with a chamfer with an inclination angle of 80°.
[0008] Furthermore, the alar nose wing limiting device includes alar nose wing clamping plates, connecting pins and connecting slots. The connecting slots are fixedly installed on the nostril limiting rings. The connecting pins are engaged and slidable in the connecting slots. The alar nose wing clamping plates are fixedly connected to the connecting pins.
[0009] Furthermore, a spring is provided between the connecting pins and the connecting slots. The spring increases the pressure of the alar nose wing clamping plates on the alar nose wings, preventing the oxygen inhalation tube from falling off from the nasal cavity. The alar nose wing clamping plates are of an arc-shaped structure, and the edges of the alar nose wing clamping plates are provided with rounded corners. The alar nose wing clamping plates are provided with raised rubber strips for increasing the frictional resistance.
[0010] Furthermore, the mandible limiting device includes a mandible clamping device and a cheek fixing device. The mandible clamping device is engaged with the mandible. The cheek fixing device is snap-fitted on the mandible clamping device. The mandible clamping device includes a front-end clamping plate of the mandible body and a bottom-wall clamping plate of the mandible body. The front-end clamping plate of the mandible body is in contact with the mandible. The bottom-wall clamping plate of the mandible body is hinged to the front-end clamping plate of the mandible body, and a torsion spring is provided at the hinge point between the front-end clamping plate of the mandible body and the bottom-wall clamping plate of the mandible body.
[0011] Furthermore, the bottom-wall clamping plate of the mandible body is provided with an arc-shaped groove for preventing touching the neck, and the edge of the bottom-wall clamping plate of the mandible body is provided with a rounded corner.
[0012] Furthermore, a pipe clamping groove for facilitating the adjustment of the oxygen inhalation tube is provided on the side wall of the front-end clamping plate of the mandible body.
[0013] Furthermore, the cheek fixing device includes a thumb pressing plate, a pressing adjustment groove, an adjustment rack, an adjustment gear, a bevel gear set, Gear One, Gear Two, Gear Three, Belt One, Belt Two and cheek clamping plates. The pressing adjustment groove is fixedly arranged in the front-end clamping plate of the mandible body. The thumb pressing plate slides along the pressing adjustment groove. The adjustment rack is engaged and slidably installed in the pressing adjustment groove and is fixedly connected to the thumb pressing plate. The adjustment gear is engaged with the adjustment rack. The bevel gear set is fixedly connected to the adjustment gear through a bracket. Gear One is connected to the bevel gear set through a bracket. Gear One, Gear Two and Gear Three are all engaged and rotatably installed in the front-end clamping plate of the mandible body. Belt One is arranged between Gear One and Gear Two. Belt Two is arranged between Gear Two and Gear Three. The cheek clamping plates are fixedly connected to Gear Three through a bracket.
[0014] Furthermore, a spring is provided on the top wall of the pressing adjustment groove, and the spring is fixedly connected to the bottom wall of the adjustment rack.
[0015] Furthermore, one end of the oxygen inhalation tube is snap-fitted with the sealing shaft sleeve, and the other end of the oxygen inhalation tube is adjusted and slid in the pipe slot of the front splint of the mandibular body. When in use, the oxygen inhalation tube is passed behind the ear and then enters the pipe slot, which can effectively prevent the oxygen inhalation tube from being squeezed and deformed by the back of the head, and will not affect the patient's diet due to the swing of the oxygen inhalation tube in front of the face.
[0016] The beneficial effects of an oxygen inhalation tube fixing device provided by this solution are as follows: (1) By using the nasal cavity expansion plate with spiral expansion and the threaded ventilation pipe, before fixing the oxygen inhalation tube, the front end of the nasal cavity expansion plate is conical, which is convenient to enter the deep part of the nasal cavity. After the threaded ventilation pipe is spirally inserted, the nasal cavity expansion plate expands outwards and squeezes the nasal cavity, so as to be relatively fixed with the nasal cavity, ensuring the stability of the nasal cavity expansion plate in the nasal cavity, and thus no longer needing to use tape for fixation; (2) By using the meshing connection relationship between the gear and the rack, the cheek splint can achieve the effect of expansion and contraction of the cheek splint by simply moving the thumb pressing plate, and cooperate with the hinged front splint of the mandibular body and the bottom wall splint of the mandibular body to achieve the effect of clamping and fixing the patient's mandible in four directions. Description of the Drawings
[0017] Figure 1 is a perspective view of an oxygen inhalation tube fixing device provided by the present invention; Figure 2 is an exploded view of an oxygen inhalation tube fixing device provided by the present invention; Figure 3 is a front view of the use state of an oxygen inhalation tube fixing device provided by the present invention; Figure 4 is a three-dimensional cross-sectional view of the nasal cavity fixing device; Figure 5 is a three-dimensional cross-sectional view of the mandibular limiting device; Figure 6 is a structural schematic diagram of the cheek fixing device; Figure 7 is an exploded view of the nasal cavity fixing device.
[0018] Among them, 1. Nasal cavity fixing device, 2. Mandibular limiting device, 3. Oxygen inhalation tube, 4. Nostril dilating device, 5. Nasal ala limiting device, 6. Nostril limiting ring, 7. Nasal cavity dilating plate, 8. Threaded ventilation tube, 9. Sealing shaft sleeve, 10. Nasal ala splint, 11. Connecting pin, 12. Connecting slot, 13. Mandibular clamping device, 14. Cheek fixing device, 15. Front splint of mandibular body, 16. Bottom wall splint of mandibular body, 17. Pipe card slot, 18. Thumb pressing plate, 19. Pressing adjustment slot, 20. Adjusting rack, 21. Adjusting gear, 22. Bevel gear set, 23. Gear one, 24. Gear two, 25. Gear three, 26. Belt one, 27. Belt two, 28. Cheek splint.
[0019] The accompanying drawings are used to provide a further understanding of the present invention and form a part of the description. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. Detailed implementation manners
[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.
[0022] As Figures 1 - 7 shown, an oxygen inhalation tube fixing device provided by the present invention includes a nasal cavity fixing device 1, a mandibular limiting device 2, and an oxygen inhalation tube 3. The mandibular limiting device 2 is snap-fitted and installed at the patient's mandible. The nasal cavity fixing device 1 is snap-fitted and installed in the nostrils. The oxygen inhalation tube 3 is snap-fitted and installed in the nasal cavity fixing device 1, and the oxygen inhalation tube 3 is snap-fitted and installed in the mandibular limiting device 2. The nasal cavity fixing device 1 includes a nostril dilating device 4 and a nasal ala limiting device 5. The nostril dilating device 4 is snap-fitted and installed in the nostrils, and the nasal ala limiting device 5 is snap-fitted and slidably connected to the nostril dilating device 4.
[0023] The nostril expansion device 4 includes a nostril limiting ring 6, a nasal expansion plate 7, a threaded ventilation tube 8, and a sealing sleeve 9. The nostril limiting ring 6 is connected to the nose wing limiting device 5 by snapping, and the nostril limiting ring 6 is placed outside the nostril. The nasal expansion plate 7 is fixedly installed on the nostril limiting ring 6, the threaded ventilation tube 8 is threadedly connected to the nasal expansion plate 7, and the sealing sleeve 9 is connected to the threaded ventilation tube 8 by snapping and rotating.
[0024] The nasal expansion plates 7 are provided with threaded grooves. After being expanded by the threaded ventilation tubes 8, the plurality of nasal expansion plates 7 present a cylindrical structure. When not expanded by the threaded ventilation tubes 8, the plurality of nasal expansion plates 7 present a conical shape. There is a gap between two adjacent groups of nasal expansion plates 7. The nasal expansion plates 7 are made of rubber material, and the top wall of the nasal expansion plates 7 is provided with a chamfer with an inclination angle of 80°.
[0025] The nose wing limiting device 5 includes a nose wing splint 10, a connecting pin 11 and a connecting slot 12. The connecting slot 12 is fixedly mounted on the nostril limiting ring 6. The connecting pin 11 engages and slides in the connecting slot 12. The nose wing splint 10 is fixedly connected to the connecting pin 11.
[0026] A spring is provided between the connecting pin 11 and the connecting slot 12 , and a raised rubber strip for increasing friction resistance is provided on the nose wing splint 10 .
[0027] The mandibular limiting device 2 includes a mandibular clamping device 13 and a cheek fixing device 14, the mandibular clamping device 13 is connected to the mandibular body by clamping, and the cheek fixing device 14 is mounted on the mandibular clamping device 13; the mandibular clamping device 13 includes a front end splint 15 of the mandibular body and a bottom wall splint 16 of the mandibular body, the front end splint 15 of the mandibular body is connected to the mandibular body by contact, the bottom wall splint 16 of the mandibular body is hinged to the front end splint 15 of the mandibular body, and a torsion spring is provided on the hinge point between the front end splint 15 of the mandibular body and the bottom wall splint 16 of the mandibular body.
[0028] An arc groove is provided on the jaw body bottom wall clamping plate 16.
[0029] A pipe clamping groove 17 for facilitating the adjustment of the oxygen inhalation pipe 3 is provided on the side wall of the front end clamping plate 15 of the mandibular body.
[0030] The cheek fixing device 14 includes a thumb pressing plate 18, a pressing adjustment groove 19, an adjustment rack 20, an adjustment gear 21, a bevel gear set 22, a gear one 23, a gear two 24, a gear three 25, a belt one 26, a belt two 27 and a cheek splint 28. The pressing adjustment groove 19 is fixedly arranged in the front splint 15 of the mandibular body. The thumb pressing plate 18 slides along the pressing adjustment groove 19. The adjustment rack 20 is snap-fitted and slidably installed in the pressing adjustment groove 19, and the adjustment rack 20 is fixedly connected to the thumb pressing plate 18. The adjustment gear 21 is meshed with the adjustment rack 20. The bevel gear set 22 is fixedly connected to the adjustment gear 21 through a bracket. The gear one 23 is connected to the bevel gear set 22 through a bracket. The gear one 23, the gear two 24 and the gear three 25 are all snap-fitted and rotatably installed in the front splint 15 of the mandibular body. The belt one 26 is arranged between the gear one 23 and the gear two 24. The belt two 27 is arranged between the gear two 24 and the gear three 25. The cheek splint 28 is fixedly connected to the gear three 25 through a bracket.
[0031] A spring is arranged on the top wall of the pressing adjustment groove 19, and the spring is fixedly connected to the bottom wall of the adjustment rack 20.
[0032] One end of the oxygen inhalation tube 3 is snap-fitted and connected to the sealing shaft sleeve 9, and the other end of the oxygen inhalation tube 3 adjusts and slides in the pipe slot 17 in the front splint 15 of the mandibular body.
[0033] During specific use, the patient lies on the hospital bed. The nasal cavity expansion plate 7 with the front end converged and in a conical shape is inserted into the nasal cavity. The nasal wing splint 10 is placed on the outer side of the nasal wing. The nasal wing splint 10 is released. The connecting pin 11 is pulled by the spring, and the connecting pin 11 enters the connecting slot 12, so that the nasal wing splint 10 closely adheres to the nasal wing. The threaded ventilation tube 8 is spirally inserted from the nostril limiting ring 6. Under the threaded structure of the threaded ventilation tube 8 and the nasal cavity expansion plate 7, the inner side of the nasal cavity expansion plate 7 is stressed, and the nasal cavity expansion plate 7 expands outwards, increasing the frictional resistance and pressure between the nasal cavity expansion plate 7 and the inner wall of the nasal cavity, ensuring that the nasal cavity fixing device 1 will not fall off the nose. One end of the oxygen inhalation tube 3 is inserted into the sealing shaft sleeve 9. Since the sealing shaft sleeve 9 is made of rubber material, when the oxygen inhalation tube 3 is inserted into the sealing shaft sleeve 9, the connection between the oxygen inhalation tube 3 and the sealing shaft sleeve 9 is made closer, avoiding oxygen leakage. The front splint 15 of the mandibular body is placed at the front end of the mandible. The bottom wall splint 16 of the mandibular body forms an angle with the front splint 15 of the mandibular body, and the bottom wall splint 16 of the mandibular body is placed at the bottom end of the mandible of the human body. Under the action of the torsion spring between the front splint 15 of the mandibular body and the bottom wall splint 16 of the mandibular body, the mandible of the patient is surrounded by the front splint 15 of the mandibular body and the bottom wall splint 16 of the mandibular body. Press the thumb pressing plate 18 with a finger, slide the thumb pressing plate 18, adjust the displacement of the rack 20, prompt the adjusting gear 21 to rotate, and the bevel gear set 22 rotates under the rotation of the adjusting gear 21. The power is transmitted to the first gear 23 through the bracket. This rotational kinetic energy is transmitted through the first belt 26 and the second belt 27 to the cheek splint 28, achieving the effect that the cheek splint 28 automatically opens after the thumb pressing plate 18 is pressed; After the front splint 15 of the mandibular body is attached to the lower jaw, release the thumb pressing plate 18. The adjusting rack 20 generates a displacement opposite to that when the thumb pressing plate 18 slides under the action of the spring tension. The cheek splint 28 automatically clamps the skin on both sides of the lower jaw. At this time, the lower jaw is fixed from four directions by two groups of cheek splints 28, one group of lower jaw clamping devices 13, and one group of cheek fixing devices 14; Pass the oxygen inhalation tube 3 through the pipe slot 17 on the front splint 15 of the mandibular body and pass the oxygen inhalation tube 3 behind the ear, ensuring that the oxygen inhalation tube 3 will not pass through in front of the face and will not affect the normal diet of the patient.
[0034] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article or device.
[0035] The above describes the present invention and its embodiments. This description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the purpose of the present invention, design similar structural modes and embodiments to this technical solution without creative efforts, they should all fall within the protection scope of the present invention.
Claims
1. An oxygen inhalation tube fixing device, characterized in that: It includes a nasal cavity fixing device (1), a mandible limiting device (2) and an oxygen inhalation tube (3). The mandible limiting device (2) is snap-fitted at the mandible of a patient. The nasal cavity fixing device (1) is snap-fitted in the nostrils. The oxygen inhalation tube (3) is snap-fitted in the nasal cavity fixing device (1), and the oxygen inhalation tube (3) is snap-fitted in the mandible limiting device (2). The nasal cavity fixing device (1) includes a nostril dilating device (4) and a nasal ala limiting device (5). The nostril dilating device (4) is snap-fitted in the nostrils, and the nasal ala limiting device (5) is snap-fitted and slidably connected to the nostril dilating device (4).
2. The oxygen inhalation tube fixing device according to claim 1, characterized in that: The nostril dilating device (4) includes a nostril limiting ring (6), a nasal cavity dilating plate (7), a threaded ventilation tube (8), and a sealing shaft sleeve (9). The nostril limiting ring (6) is snap-fitted to the nasal ala limiting device (5). The nasal cavity dilating plate (7) is fixedly installed on the nostril limiting ring (6). The threaded ventilation tube (8) is threadedly connected to the nasal cavity dilating plate (7). The sealing shaft sleeve (9) is snap-fitted and rotatably connected to the threaded ventilation tube (8).
3. The oxygen inhalation tube fixing device according to claim 2, characterized in that: The nasal cavity dilating plate (7) is provided with a threaded groove. There is a gap between two adjacent groups of nasal cavity dilating plates (7). The nasal cavity dilating plate (7) is made of rubber material, and a chamfer is provided on the top wall of the nasal cavity dilating plate (7).
4. The oxygen inhalation tube fixing device according to claim 3, characterized in that: The nasal ala limiting device (5) includes a nasal ala clamping plate (10), a connecting pin (11), and a connecting slot (12). The connecting slot (12) is fixedly installed on the nostril limiting ring (6). The connecting pin (11) is snap-fitted and slidable in the connecting slot (12). The nasal ala clamping plate (10) is fixedly connected to the connecting pin (11).
5. The oxygen inhalation tube fixing device according to claim 4, characterized in that: A spring is provided between the connecting pin (11) and the connecting slot (12). The nasal ala clamping plate (10) is provided with a raised rubber strip for increasing the frictional resistance.
6. The oxygen inhalation tube fixing device according to claim 5, characterized in that: The mandible limiting device (2) includes a mandible clamping device (13) and a cheek fixing device (14). The mandible clamping device (13) is snap-fitted to the mandible. The cheek fixing device (14) is snap-fitted on the mandible clamping device (13). The mandible clamping device (13) includes a front-end clamping plate (15) of the mandible body and a bottom-wall clamping plate (16) of the mandible body. The front-end clamping plate (15) of the mandible body is in contact with the mandible. The bottom-wall clamping plate (16) of the mandible body is hinged to the front-end clamping plate (15) of the mandible body, and a torsion spring is provided at the hinge point between the front-end clamping plate (15) of the mandible body and the bottom-wall clamping plate (16) of the mandible body.
7. The oxygen inhalation tube fixing device according to claim 6, characterized in that: The cheek fixing device (14) includes a thumb pressing plate (18), a pressing adjustment groove (19), an adjustment rack (20), an adjustment gear (21), a bevel gear set (22), a first gear (23), a second gear (24), a third gear (25), a first belt (26), a second belt (27) and a cheek clamping plate (28). The pressing adjustment groove (19) is fixedly arranged in the front splint (15) of the mandibular body. The thumb pressing plate (18) slides along the pressing adjustment groove (19). The adjustment rack (20) is snap-fitted and slidably installed in the pressing adjustment groove (19), and the adjustment rack (20) is fixedly connected to the thumb pressing plate (18). The adjustment gear (21) is meshed with the adjustment rack (20). The bevel gear set (22) is fixedly connected to the adjustment gear (21) through a bracket. The first gear (23) is connected to the bevel gear set (22) through a bracket. The first gear (23), the second gear (24) and the third gear (25) are all snap-fitted and rotatably installed in the front splint (15) of the mandibular body. The first belt (26) is arranged between the first gear (23) and the second gear (24). The second belt (27) is arranged between the second gear (24) and the third gear (25). The cheek clamping plate (28) is fixedly connected to the third gear (25) through a bracket.
8. The oxygen inhalation tube fixing device according to claim 7, characterized in that: A spring is arranged on the top wall of the pressing adjustment groove (19), and the spring is fixedly connected to the bottom wall of the adjustment rack (20).
9. The oxygen inhalation tube fixing device according to claim 8, characterized in that: One end of the oxygen inhalation tube (3) is snap-fitted and connected to the sealing shaft sleeve (9), and the other end of the oxygen inhalation tube (3) is adjusted and slid in the pipe slot (17) in the front splint (15) of the mandibular body.
10. The oxygen inhalation tube fixing device according to claim 6, characterized in that: An arc-shaped groove is arranged on the bottom wall splint (16) of the mandibular body; a pipe slot (17) for facilitating the adjustment of the oxygen inhalation tube (3) is arranged on the side wall of the front splint (15) of the mandibular body.