Sleep apnea oropharyngeal mechanical dilator

Abstract

The invention provides a sleep apnea oropharyngeal mechanical dilator, which comprises a tooth sleeve assembly, which comprises an upper tooth sleeve and a lower tooth sleeve; the positioning assembly comprises an upper tooth socket shell and a lower tooth socket shell, the upper tooth socket shell is arranged at the upper end of the lower tooth socket shell in a front-back sliding mode, and a first adjusting assembly is arranged between the lower tooth socket shell and the upper tooth socket shell; the soft palate traction assembly comprises an upper convex arc-shaped plate and a lower convex arc-shaped plate, the two sides of the upper convex arc-shaped plate are in sliding connection with the bottom of the upper tooth socket through flexible inserting strips respectively, and a second adjusting assembly is arranged in the bottom wall of the upper tooth socket. Through relative displacement of the upper tooth socket and the lower tooth socket, the tongue root can be effectively prevented from falling backwards; a drooping soft palate can be pulled upwards and forwards through the soft palate pulling assembly, an airway is opened, intervention is conducted on two causes at the same time, the snore stopping effect is greatly improved, and the snore stopping device is suitable for the sleep apnea syndrome caused by complex causes; the normal opening and closing actions of the upper jaw and the lower jaw are not affected, a patient can freely open the mouth to speak and yawn after wearing the mask, and the wearing comfort and flexibility are improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a mechanical dilator for the oropharynx in patients with sleep apnea. Background Technology

[0002] Snoring (medically termed snoring, sleep apnea syndrome) is a common sleep phenomenon. Most people consider it commonplace and take it for granted. However, snoring is a major health hazard. Because snoring causes repeated pauses in breathing during sleep, it leads to severe oxygen deficiency in the brain and blood, resulting in hypoxemia. This can induce hypertension, cerebrovascular disease, arrhythmia, myocardial infarction, and angina. If breathing pauses for more than 120 seconds at night, sudden death can easily occur in the early morning. Every day, 3,000 people worldwide die from snoring.

[0003] There are many causes of sleep apnea syndrome, mainly due to posterior displacement of the tongue or drooping of the soft palate, either alone or both simultaneously. In clinical treatment, the mandible is often moved forward to misalign the upper and lower jaws and prevent snoring. The principle is to prevent the tongue from retracting. However, this type of anti-snoring device often only solves snoring caused by posterior displacement of the tongue and cannot simultaneously solve snoring caused by drooping of the soft palate. This results in a relatively limited function and cannot effectively solve snoring caused by both factors, leading to unsatisfactory anti-snoring results. Secondly, existing anti-snoring braces restrict the opening and closing of the upper and lower teeth, preventing patients from opening their mouths to speak or yawn while wearing them, making them inflexible in use.

[0004] In summary, there is an urgent need to design a mechanical dilator for the oropharynx that overcomes the aforementioned problems and challenges associated with sleep apnea. Summary of the Invention

[0005] The purpose of this invention is to provide a mechanical dilator for the oropharynx that overcomes the above-mentioned problems of sleep apnea.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a sleep apnea oropharyngeal mechanical dilator, comprising: A dental brace assembly, comprising an upper dental brace and a lower dental brace respectively fitted onto the upper and lower rows of teeth; The positioning component includes an upper brace shell movably disposed on the outside of the upper brace and a lower brace shell fixedly disposed on the outside of the lower brace. The upper brace shell is slidably disposed on the upper end of the lower brace shell. A first adjustment component for adjusting the misalignment distance between the lower brace shell and the upper brace shell is also provided. The shapes of the upper brace shell and the lower brace shell are respectively matched with the shapes of the upper brace and the lower brace. The upper surface of the upper brace shell and the lower surface of the lower brace shell are respectively provided with embedding grooves that match the upper brace and the lower brace. The soft palate traction assembly includes an upper convex arc plate disposed on the side of the upper brace near the upper palate and a lower convex arc plate integrally connected to the side of the upper convex arc plate away from the upper brace. The two sides of the upper convex arc plate are slidably connected to the bottom of the upper brace via flexible inserts. The bottom wall of the upper brace is provided with a second adjustment assembly for adjusting the sliding length of the flexible inserts. The outer shell of the upper brace has a slot on the side near the upper palate for the flexible inserts to move.

[0007] The objectives of this invention and the technical problems it addresses can be further achieved by the following technical measures.

[0008] Furthermore, an arc-shaped support plate is fixedly connected to the lower end of the upper dental brace; The second adjustment assembly includes a cavity formed in the middle of the arc-shaped support plate, a rotating shaft rotatably disposed between the front and rear side walls of the cavity, a take-up drum fixedly sleeved on the outer wall of the rotating shaft, and a first steel wire and a second steel wire respectively wound around the outer walls of both sides of the take-up drum. The other ends of the first steel wire and the second steel wire are respectively fixedly connected to the ends of the flexible connector strips on both sides. The arc-shaped support plate is provided with a sliding groove for the flexible connector strip to slide and a sliding hole for the two steel wires to slide on both sides. A first return spring is connected to one end of the sliding groove near the cavity, and the other end of the first return spring is fixedly connected to the flexible connector strip. The rotating shaft extends out of the arc-shaped support plate from the side near the lip and is fixedly connected to the first handle. When the first handle is rotated, the winding drum simultaneously winds up or unwinds the first and second steel wires.

[0009] Furthermore, a locking component is provided on the outer side of the arc-shaped support plate; The locking assembly includes a sleeve that is slidably sleeved on the outside of the first handle, a first toothed ring disposed on the side of the sleeve near the arc-shaped support plate, and a second toothed ring fixed on the arc-shaped support plate, wherein the second toothed ring is engaged with the first toothed ring.

[0010] Furthermore, a groove is provided on the outer wall of the first handle, and a square slide groove communicating with the groove is provided inside the groove. A block is slidably provided in the square slide groove, and a pull rod is slidably provided in the groove. The two ends of the pull rod are fixedly connected to the block and the first handle, respectively. A second return spring is sleeved on the outer wall of the pull rod, and the two ends of the second return spring are fixedly connected to the side wall of the block and the square slide groove, respectively.

[0011] Furthermore, the upper convex arc-shaped plate has a hollow structure in the middle.

[0012] Furthermore, the outer surfaces of the flexible connector strip, the upper convex arc plate, and the lower convex arc plate are all covered with a soft silicone layer.

[0013] Furthermore, the front sidewall of the upper brace housing has a notch in the middle for exposing the first handle.

[0014] Furthermore, the upper surface of the lower brace shell is provided with slides on both sides, and the lower end of the upper brace shell is fixedly connected with sliders on both sides, and the sliders are slidably disposed in the slides.

[0015] Furthermore, the first adjustment assembly includes supports fixed to the front and rear sides of the upper middle of the lower brace shell, a lead screw rotatably disposed between the supports, and a lead screw slider threadedly connected to the lead screw. The length direction of the lead screw is consistent with the length direction of the slide. The upper end of the lead screw slider is fixedly connected to one side of the lower end of the upper brace shell. A second handle is fixedly connected to the side of the lead screw near the lip.

[0016] Furthermore, the outer wall of one side of the upper brace shell is provided with scale lines, and the lower brace shell is provided with indicator arrows.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. The oropharyngeal mechanical dilator for sleep apnea of ​​the present invention adjusts the anterior-posterior misalignment distance between the upper and lower dental braces shells through the first adjustment component, thereby driving the relative displacement of the upper and lower dental braces and effectively preventing the tongue root from falling back; the soft palate traction component, through the combined action of the upper and lower convex arc plates, can pull the drooping soft palate upward and forward to open the airway, thus intervening in two causes simultaneously and greatly improving the anti-snoring effect. It is suitable for sleep apnea syndrome caused by complex causes.

[0018] 2. The sleep apnea oropharyngeal mechanical dilator of the present invention is characterized by an upper dental brace that is movablely connected to an upper dental brace shell, and a lower dental brace that is fixedly connected to a lower dental brace shell. The upper dental brace shell is slidably connected to the lower dental brace shell via a slider and a slide rail, which restricts the forward and backward displacement of the upper and lower dental brace shells. The upper dental brace can move up and down within the upper dental brace shell without affecting the normal opening and closing movements of the upper and lower jaws. After wearing it, the patient can freely open their mouth to speak and yawn, improving wearing comfort and ease of use.

[0019] 3. The oropharyngeal mechanical dilator of the present invention has a first adjustment component that achieves fine adjustment of the front-to-back distance through a lead screw drive, and can accurately control the misalignment distance with the scale lines and indicator arrows; the second adjustment component controls the winding of the steel wire through a handle, adjusts the sliding length of the flexible connector, and thus adjusts the traction force on the soft palate; and the locking component achieves stable locking after adjustment through the engagement of the toothed ring, avoiding displacement of the adjustment position due to changes in body position or muscle activity during use, while adapting to different patients' oral structures and disease severity.

[0020] 4. The oropharyngeal mechanical dilator of the present invention has a flexible connector, an upper convex arc plate and a lower convex arc plate covered with a soft silicone layer. The silicone layer is soft and has low irritation when in contact with the oral mucosa, which can reduce friction damage. The upper convex arc plate has a hollow structure in the middle, which does not affect the normal ventilation and saliva secretion of the oral cavity, improves wearing comfort, reduces foreign body sensation, and is suitable for long-term nighttime use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the oropharyngeal mechanical dilator for sleep apnea provided by the present invention; Figure 2 This is a schematic diagram of the overall structure of the sleep apnea oropharyngeal mechanical dilator provided by the present invention, showing the upper dental brace being removed from the outer shell of the upper dental brace. Figure 3 This is a top cross-sectional view of the connection between the arc-shaped support plate and the flexible connector strip in the oropharyngeal mechanical dilator for sleep apnea provided by the present invention; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 This is a partial side cross-sectional view of the oropharyngeal mechanical dilator for sleep apnea provided by the present invention at the first adjustment component. Explanation of reference numerals in the attached figures: 1. Braces assembly; 11. Upper braces; 12. Lower braces; 2. Positioning component; 21. Upper brace shell; 22. Lower brace shell; 23. Insertion groove; 24. Notch; 25. Slide rail; 26. Slider; 27. Scale line; 28. Indicator arrow; 3. First adjusting component; 31. Support; 32. Lead screw; 33. Lead screw slider; 34. Second handle; 4. Soft palate traction assembly; 41. Upper convex arc plate; 42. Lower convex arc plate; 43. Flexible connector strip; 5. Second adjusting component; 51. Arc-shaped support plate; 511. Cavity; 512. Slide groove; 513. Slide hole; 52. Rotating shaft; 53. Winding drum; 54. First steel wire; 55. Second steel wire; 56. First return spring; 57. First handle; 571. Groove; 572. Square slide groove; 58. Locking component; 581. Sleeve; 582. First toothed ring; 583. Second toothed ring; 584. Block; 585. Pull rod; 586. Second return spring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0023] Please see Figures 1 to 5 A sleep apnea oropharyngeal mechanical dilator, comprising: The dental brace assembly 1 includes an upper dental brace 11 and a lower dental brace 12 that are respectively fitted onto the upper and lower teeth; the dental braces can be set in different sizes, and doctors can choose the appropriate size of the upper and lower dental braces according to the patient's condition, or they can customize dental braces to match the patient according to their needs, such as using 3D printing technology to make matching dental braces. The positioning component 2 includes an upper brace shell 21 movably disposed outside the upper brace 11 and a lower brace shell 22 fixedly disposed outside the lower brace 12. The upper brace shell 21 is slidably disposed on the upper end of the lower brace shell 22. A first adjustment component 3 is provided between the lower brace shell 22 and the upper brace shell 21 for adjusting the misalignment distance between them. The shapes of the upper brace shell 21 and the lower brace shell 22 are respectively matched to the shapes of the upper brace 11 and the lower brace 12. The upper surface of the upper brace shell 21 and the lower surface of the lower brace shell 22 are respectively open. An insert groove 23 is provided to match the upper brace 11 and the lower brace 12. After the brace is selected or made, it is inserted into the suitable upper brace shell 21 and lower brace shell 22. The lower brace 12 can be fixed in the lower brace shell 22 by means of adhesive, while the upper brace shell 21 can be movably nested in the upper brace 11, which makes it convenient for the patient to open and close the mouth when speaking or yawning. The first adjustment component 3 can adjust the front and rear misalignment distance between the upper brace shell 21 and the lower brace shell 22, so that the lower brace shell moves the lower teeth forward, thereby protruding out of the upper teeth, and thus effectively preventing the tongue root from falling back. The soft palate traction component 4 includes an upper convex arc plate 41 located on the side of the upper dental brace 11 near the upper palate and a lower convex arc plate 42 integrally connected to the side of the upper convex arc plate 41 away from the upper dental brace 11. Both sides of the upper convex arc plate 41 are slidably connected to the bottom of the upper dental brace 11 via flexible inserts 43. A second adjustment component 5 is provided inside the bottom wall of the upper dental brace 11 for adjusting the sliding length of the flexible inserts 43. A slot for the flexible inserts 43 to move is provided on the side of the upper dental brace shell 21 near the upper palate (the slot in the figure is in its maximum state, i.e., the inner wall of the upper dental brace shell 21 is removed). Through the combined action of the upper convex arc plate 41 (matching the shape of the upper palate) and the lower convex arc plate 42 (lifting and pulling the drooping soft palate), the drooping soft palate can be pulled upwards and forwards, opening the airway. This simultaneously addresses both soft palate drooping and tongue root displacement, significantly improving the anti-snoring effect.

[0024] Preferably, an arc-shaped support plate 51 is fixedly connected to the lower end of the upper brace 11. The support plate 51 is flat and has the same curvature as the lower end of the upper brace 11, so as to form a whole and to set the second adjustment component 5. The second adjustment component 5 includes a cavity 511 formed in the middle of the arc-shaped support plate 51, a rotating shaft 52 rotatably disposed between the front and rear side walls of the cavity 511, a winding drum 53 fixedly sleeved on the outer wall of the rotating shaft 52, and a first steel wire 54 and a second steel wire 55 respectively wound around the outer walls of the two sides of the winding drum 53. The other ends of the first steel wire 54 and the second steel wire 55 are respectively fixedly connected to the ends of the flexible connector strips 43 on both sides. The arc-shaped support plate 51 is provided with a sliding groove 512 for the flexible connector strip 43 to slide and a sliding hole 513 for the two steel wires to slide on both sides. A first return spring 56 is connected to one end of the sliding groove 512 near the cavity 511, and the other end of the first return spring 56 is fixedly connected to the flexible connector strip 43. The rotating shaft 52 extends out of the arc-shaped support plate 51 near the lip and is fixedly connected to the first handle 57. When the first handle 57 is rotated (in practice, it can be turned with a wrench), the winding drum 53 simultaneously winds up or unwinds the first steel wire 54 and the second steel wire 55, thereby adjusting the flexible insert strips 43 on both sides at equal intervals and in the same direction, so that the upper convex arc plate 41 and the lower convex arc plate 42 pull the drooping soft palate upward and forward, thereby opening the airway.

[0025] Preferably, the outer side of the arc-shaped support plate 51 is also provided with a locking component 58, which can prevent the adjustment position from shifting due to changes in body position or muscle activity during use, and at the same time adapt to the oral structure and disease severity of different patients. The locking assembly 58 includes a sleeve 581 slidably sleeved on the outside of the first handle 57, a first toothed ring 582 disposed on the side of the sleeve 581 near the arc-shaped support plate 51, and a second toothed ring 583 fixed on the arc-shaped support plate 51. The second toothed ring 583 is engaged with the first toothed ring 582. By pushing the sleeve 581 inward, the first toothed ring 582 and the second toothed ring 583 are engaged to achieve a stable lock after adjustment. The operation is simple and the fixation is reliable.

[0026] Preferably, the outer wall of the first handle 57 has a groove 571, and the inside of the groove 571 has a square slide groove 572 communicating with it. A block 584 is slidably arranged in the square slide groove 572, and a pull rod 585 is slidably arranged in the groove 571. The two ends of the pull rod 585 are fixedly connected to the block 584 and the first handle 57, respectively. A second return spring 586 is sleeved on the outer wall of the pull rod 585, and the two ends of the second return spring 586 are fixedly connected to the side wall of the block 584 and the square slide groove 572, respectively. In this embodiment, when it is necessary to adjust the sliding length of the flexible connector 43, i.e. the force pulling the soft palate, the sleeve 581 is pulled outward to disengage the first toothed ring 582 from the second toothed ring 583. At this time, the second return spring 586 is in a stretched state, accumulating rebound force. Simultaneously, the sleeve 581 is rotated to drive the first handle 57 to rotate. After adjustment, the sleeve 581 is released. Under the rebound force of the second return spring 586, the first toothed ring 582 and the second toothed ring 583 re-engage, thereby locking the first handle 57. The structure is simple, the operation is convenient, and the fixation is reliable.

[0027] Preferably, the upper convex arc-shaped plate 41 has a hollow structure in the middle. This does not affect normal oral ventilation and saliva secretion, improves wearing comfort, reduces foreign body sensation, and is suitable for long-term nighttime wear.

[0028] Preferably, the outer surfaces of the flexible connector 43, the upper convex arc plate 41, and the lower convex arc plate 42 are all covered with a soft silicone layer. Soft silicone is soft in texture, has low irritation when in contact with the oral mucosa, and can reduce friction damage. The soft silicone layer is 1-2mm thick, made of medical-grade liquid silicone material, has good biocompatibility, is non-allergenic, and ensures long-term safety. The upper convex arc plate 41 and the lower convex arc plate 42 are metal or alloy plates with a certain degree of hardness, which can lift and pull the soft palate upwards and forwards.

[0029] Preferably, the front side wall of the upper dental brace shell 21 has a notch 24 for exposing the first handle 57, which facilitates the upper teeth to drive the upper dental brace 11 to perform oral opening and closing movements. The upper dental brace shell 21 plays a role in restricting the front and back position of the upper teeth during sleep, and at the same time plays a role in providing a mounting base and traction support for the soft palate traction component 4.

[0030] Preferably, the upper surface of the lower brace housing 22 is provided with slide rails 25 on both sides, and the lower end of the upper brace housing 21 is fixedly connected with sliders 26 on both sides, and the sliders 26 are slidably disposed in the slide rails 25.

[0031] Preferably, the first adjusting assembly 3 includes supports 31 fixed to the front and rear sides of the upper middle of the lower brace housing 22, a lead screw 32 rotatably disposed between the supports 31, and a lead screw slider 33 threadedly connected to the lead screw 32. The length direction of the lead screw 32 is consistent with the length direction of the slider 33. The upper end of the lead screw slider 33 is fixedly connected to one side of the lower end of the upper brace housing 21. A second handle 34 is fixedly connected to the side of the lead screw 32 near the lip. Fine adjustment of the front and rear distance is achieved through lead screw transmission, and the misalignment distance can be precisely controlled.

[0032] Preferably, the upper brace housing 21 has a scale line 27 on one outer wall, and the lower brace housing 22 has an indicator arrow 28. The scale line and indicator arrow can be used to check the misalignment distance between the upper and lower braces. With the help of the screw drive for fine adjustment, the distance of the lower teeth protruding outward can be controlled more precisely.

[0033] In use, the dentist selects matching upper braces 11 and lower braces 12 based on the patient's upper and lower teeth dimensions, or can customize matching upper and lower braces as needed. The upper braces 11 are embedded into the upper brace shell 21, and the lower braces 12 are glued into the lower brace shell 222, ensuring a secure and stable fit between the braces and shells without loosening or shifting. The patient wears the device in their mouth, biting down on the upper braces 11 with their upper and lower teeth respectively. On the upper and lower braces 12; if there is a problem of tongue retraction, rotate the second handle 34 to drive the screw 32 to rotate, observe the scale line 27 on the upper brace shell 21 and the indicator arrow 28 on the lower brace shell 22, and adjust the front and back misalignment distance to a suitable scale according to your own comfort and airway patency. At this time, the upper and lower braces will move forward with the shell, effectively preventing the tongue root from falling back and opening the airway; pull the sleeve 581 of the locking component 58 outward and rotate the sleeve 581 until the lower convex arc plate 42 contacts the soft palate and generates a moderate traction force, so that the soft palate is lifted upward and forward to avoid drooping and blocking the airway. At this time, stop rotating the sleeve 581, release the sleeve 581, lock the adjustment position to prevent the traction force from shifting; after the adjustment is completed, the patient can try to open and close the mouth, speak and other actions to verify whether the opening and closing of the upper and lower jaws is smooth and without any jamming or restriction. If the pulling force is too great or too small, repeat the steps of rotating sleeve 581 above for fine adjustment; if the misalignment distance is unsuitable, repeat the turning of the second handle 34 for adjustment. During wear, the hollow structure of the upper convex arc plate 41 ensures oral ventilation and normal saliva secretion, while the soft silicone layer reduces irritation to the oral mucosa and improves wearing comfort. After use, rotate sleeve 581 in the opposite direction, the first reset spring 586 pulls the flexible connector 43 to reset, and rotate the second handle 34 in the opposite direction to reset the upper dental brace shell 21, then remove the device for cleaning and storage.

[0034] The present invention has been further described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A sleep apnea oropharyngeal mechanical dilator, characterized in that: The dental assembly (1) includes an upper dental brace (11) and a lower dental brace (12) that are respectively fitted onto the upper and lower rows of teeth. The positioning component (2) includes an upper brace shell (21) movably disposed outside the upper brace (11) and a lower brace shell (22) fixedly disposed outside the lower brace (12). The upper brace shell (21) is slidably disposed at the upper end of the lower brace shell (22). A first adjustment component (3) for adjusting the misalignment distance between the lower brace shell (22) and the upper brace shell (21) is also provided. The shapes of the upper brace shell (21) and the lower brace shell (22) are respectively matched with the shapes of the upper brace (11) and the lower brace (12). The upper surface of the upper brace shell (21) and the lower surface of the lower brace shell (22) are respectively provided with embedding grooves (23) that match the upper brace (11) and the lower brace (12). The soft palate traction assembly (4) includes an upper convex arc plate (41) disposed on the side of the upper dental brace (11) near the upper palate and a lower convex arc plate (42) integrally connected to the side of the upper convex arc plate (41) away from the upper dental brace (11). The two sides of the upper convex arc plate (41) are slidably connected to the bottom of the upper dental brace (11) through flexible insert strips (43). The bottom wall of the upper dental brace (11) is provided with a second adjustment assembly (5) for adjusting the sliding length of the flexible insert strip (43). The outer shell (21) of the upper dental brace is provided with a slot for the flexible insert strip (43) to move on the side near the upper palate.

2. The oropharyngeal mechanical dilator for sleep apnea according to claim 1, characterized in that: An arc-shaped support plate (51) is fixedly connected to the lower end of the upper dental brace (11). The second adjustment component (5) includes a cavity (511) formed in the middle of the arc-shaped support plate (51), a rotating shaft (52) rotatably disposed between the front and rear side walls of the cavity (511), a winding drum (53) fixedly sleeved on the outer wall of the rotating shaft (52), and a first steel wire (54) and a second steel wire (55) respectively wound on the outer walls of both sides of the winding drum (53). The other ends of the first steel wire (54) and the second steel wire (55) are respectively fixedly connected to the ends of the flexible connector strips (43) on both sides. The arc-shaped support plate (51) is provided with a sliding groove (512) for the flexible connector strip (43) to slide and a sliding hole (513) for the two steel wires to slide. A first return spring (56) is connected to one end of the sliding groove (512) near the cavity (511). The other end of the first return spring (56) is fixedly connected to the flexible connector strip (43). The rotating shaft (52) extends out of the arc-shaped support plate (51) near the lip and is fixedly connected to the first handle (57). When the first handle (57) is rotated, the winding drum (53) simultaneously winds up or unwinds the first wire (54) and the second wire (55).

3. The oropharyngeal mechanical dilator for sleep apnea according to claim 2, characterized in that: The outer side of the arc-shaped support plate (51) is also provided with a locking component (58). The locking assembly (58) includes a sleeve (581) slidably sleeved on the outside of the first handle (57), a first toothed ring (582) disposed on the side of the sleeve (581) near the arc-shaped support plate (51), and a second toothed ring (583) fixed on the arc-shaped support plate (51), wherein the second toothed ring (583) is engaged with the first toothed ring (582).

4. The oropharyngeal mechanical dilator for sleep apnea according to claim 3, characterized in that, The outer wall of the first handle (57) is provided with a groove (571), and a square slide groove (572) communicating with it is provided inside the groove (571). A block (584) is slidably provided in the square slide groove (572), and a pull rod (585) is slidably provided in the groove (571). The two ends of the pull rod (585) are fixedly connected to the block (584) and the first handle (57) respectively. A second return spring (586) is sleeved on the outer wall of the pull rod (585), and the two ends of the second return spring (586) are fixedly connected to the side wall of the block (584) and the square slide groove (572) respectively.

5. The oropharyngeal mechanical dilator for sleep apnea according to any one of claims 1-4, characterized in that, The upper convex arc plate (41) has a hollow structure in the middle.

6. The oropharyngeal mechanical dilator for sleep apnea according to claim 5, characterized in that, The outer surfaces of the flexible connector (43), the upper convex arc plate (41), and the lower convex arc plate (42) are all covered with a soft silicone layer.

7. The oropharyngeal mechanical dilator for sleep apnea according to claim 2, characterized in that, The front side wall of the upper brace shell (21) has a notch (24) for exposing the first handle (57).

8. The oropharyngeal mechanical dilator for sleep apnea according to claim 1, characterized in that, The upper surface of the lower brace shell (22) is provided with slides (25) on both sides, and the lower end of the upper brace shell (21) is fixedly connected with sliders (26) on both sides, and the sliders (26) are slidably disposed in the slides (25).

9. The oropharyngeal mechanical dilator for sleep apnea according to claim 8, characterized in that: The first adjustment component (3) includes supports (31) fixed on the front and rear sides of the upper middle of the lower brace shell (22), a lead screw (32) rotatably disposed between the supports (31), and a lead screw slider (33) threadedly connected to the lead screw (32). The length direction of the lead screw (32) is consistent with the length direction of the slide (25). The upper end of the lead screw slider (33) is fixedly connected to one side of the lower end of the upper brace shell (21). A second handle (34) is fixedly connected to the side of the lead screw (32) near the lip.

10. The oropharyngeal mechanical dilator for sleep apnea according to claim 9, characterized in that, The upper brace shell (21) has a scale line (27) on one side of its outer wall, and the lower brace shell (22) has an indicator arrow (28).

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