Mandibular advancement appliance for treating OSAHS

Abstract

The utility model relates to a mandibular advancement appliance for treating OSAHS, which comprises a maxillary tooth socket and a mandibular tooth socket, first mounting plates are symmetrically arranged at the positions of back tooth areas on two sides of the maxillary tooth socket, second mounting plates are symmetrically arranged at the positions of back tooth areas on two sides of the mandibular tooth socket, the second mounting plates are positioned in front of the first mounting plates, and the second mounting plates are positioned in front of the second mounting plates. The upper jaw tooth socket and the lower jaw tooth socket are formed through 3D printing, a first screw and a second screw are embedded in the first mounting plate and the second mounting plate respectively, and a metal adjusting rod with the adjustable length is hinged between the first screw and the second screw. The maxillary tooth socket and the mandibular tooth socket of the mandibular advancement appliance are directly printed through a 3D printer after the screws are embedded, so that the influence of a mold pressing process on the precision is avoided, and the production efficiency is greatly improved. The upper jaw tooth socket and the lower jaw tooth socket are connected through the metal adjusting rod with the adjustable length, the forward moving distance of the lower jaw tooth socket relative to the upper jaw tooth socket can be accurately adjusted, and the structural stability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of oral medical instruments, in particular to a mandibular advancement appliance for treating OSAHS. Background Art

[0002] Obstructive sleep apnea hypopnea syndrome (OSAHS) is characterized by recurrent episodes of airway collapse during sleep, leading to intermittent hypoxia. Long-term, chronic ischemic hypoxia can lead to hypertension, cardiovascular disease, insulin resistance, cognitive decline, and decreased quality of life. Current treatments for sleep apnea include continuous positive airway pressure (CPAP), oral appliances (OA), surgery, and medications to improve wakefulness. The mandibular advancement device (MAD) in OA is considered the most effective oral appliance for OSAHS. It works by advancing the mandible. On the one hand, the genioglossus and submandibular muscles guide the tongue upward and forward, expanding the upper airway behind the tongue. On the other hand, the anterior and inferior displacement of the mandible, aligned with the lateral pharyngeal wall muscle fibers, stretches the velopharynx and widens the upper airway behind the soft palate.

[0003] Existing one-piece oral appliances combine the upper and lower jaws into one unit, preventing them from moving freely. This forces the mandible to remain in a fixed position for extended periods, leading to soreness, pain, muscle swelling, and stiffness in the mandibular joint area, making it difficult for patients to accept. Separate oral appliances, consisting of separate upper and lower jaw braces connected by elastic connectors, allow for mandibular advancement with a certain degree of mobility. However, this structure results in unstable mandibular advancement, making it difficult to adjust the mandibular advancement distance as needed.

[0004] Therefore, it is necessary to provide a mandibular advancement appliance for treating OSAHS that has a stable structure, high precision, high production efficiency, and can accurately adjust the mandibular advancement distance. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a mandibular advancement appliance for treating OSAHS which has a stable structure, high precision, high production efficiency and can accurately adjust the mandibular advancement distance.

[0006] In order to solve the above problems, the technical solution adopted by the present invention is:

[0007] A mandibular advancement appliance for treating OSAHS, comprising a maxillary brace and a mandibular brace, wherein first mounting plates are symmetrically arranged on the posterior teeth areas on both sides of the maxillary brace, and second mounting plates are symmetrically arranged on the posterior teeth areas on both sides of the mandibular brace, and the second mounting plates are located in front of the first mounting plates. The maxillary brace and the mandibular brace are formed by 3D printing, and a first screw and a second screw are pre-embedded on the first mounting plate and the second mounting plate, respectively, and a metal adjustment rod with adjustable length is hinged between the first screw and the second screw.

[0008] As an embodiment of the present invention, the first screw is arranged at the bottom position of the first mounting plate, and the second screw is arranged at the middle position of the second mounting plate. When the maxillary braces and the mandibular braces are fully fitted together, the fitting surfaces of the maxillary braces and the mandibular braces are parallel to the metal adjustment rod.

[0009] As an embodiment of the present invention, the metal adjustment rod includes a guide tube, an adjustment cylinder and a guide rod, the inner diameter of the guide tube is adapted to the outer diameter of the guide rod, a connecting plate is fixedly provided at the rear end of the guide tube, an external thread is provided on the outer surface of the front end, and a first connecting hole is opened on the connecting plate;

[0010] The inner wall of the adjusting cylinder is provided with an internal thread hole adapted to the external thread, the front side wall of the adjusting cylinder is provided with a plurality of jacks evenly arranged circumferentially, and the rear end surface of the adjusting cylinder is provided with a mounting groove with a larger aperture than the internal thread hole;

[0011] The guide rod is inserted into the guide tube, a connecting block is fixed to the front end of the guide rod, and a second connecting hole is opened on the connecting block;

[0012] A spring is sleeved on the front portion of the guide tube, and the front end of the spring is located in the installation groove.

[0013] As an embodiment of the present invention, a first shoulder is provided on the guide tube at the rear end of the external thread, and the diameter of the guide tube in front of the first shoulder is smaller than the diameter of the guide tube in the rear end of the first shoulder.

[0014] As an embodiment of the present invention, a rotating ring is rotatably provided at the bottom of the installation groove, and a lubricating layer or a miniature thrust ball bearing is provided between the rotating ring and the bottom of the installation groove.

[0015] As an embodiment of the present invention, when the metal adjustment rod is installed on the maxillary braces and the mandibular braces, the connecting plate is located above the guide tube, the first connecting hole is set on the first screw and fixed by a nut, and the second connecting hole is set on the second screw and fixed by a nut.

[0016] As an embodiment of the present invention, an arc-shaped groove is provided on the front side of the first mounting plate, and an arc-shaped block corresponding to the arc-shaped groove is provided on the rear side of the second mounting plate.

[0017] As an embodiment of the present invention, the maxillary braces and the mandibular braces are oval braces that fit the shape of the dental arch.

[0018] As an embodiment of the present invention, pads are provided on opposite sides of the posterior teeth area of ​​the maxillary braces and the mandibular braces.

[0019] As an embodiment of the present invention, a key rod corresponding to the insertion hole is also provided for adjusting the relative position of the adjustment tube and the guide tube.

[0020] The beneficial effects of adopting the above technical solution are:

[0021] The utility model provides a mandibular advancement appliance for treating OSAHS. The maxillary braces and mandibular braces are directly printed out by a 3D printer after pre-embedded screws, thereby avoiding the influence of the molding process on the accuracy and greatly improving the production efficiency. The maxillary braces and mandibular braces are connected by a length-adjustable metal adjustment rod, and the advancement distance of the mandibular braces relative to the maxillary braces can be accurately adjusted, and the structure has good stability. When the length of the metal adjustment rod is adjusted, the adjustment can be performed by inserting the key rod into the socket and rotating the adjustment cylinder. During the adjustment process, the spring will rub against the first shaft shoulder and the bottom of the installation groove, which can easily cause the spring to twist and deform. When the length of the metal adjustment rod is adjusted, the torsional force of the spring can easily cause the adjustment cylinder and the guide tube to rotate relative to each other for reset, which is not conducive to adjustment. The setting will affect the adjustment accuracy. By setting a rotating ring, the above situation can be avoided and the adjustment accuracy of the metal adjustment rod can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the state of the utility model when not in use.

[0023] Figure 2 It is a schematic diagram of the state of the metal adjusting rod when the utility model is not in use.

[0024] Figure 3 It is a schematic diagram of the state of the utility model when in use.

[0025] Figure 4 It is a schematic diagram of the state of the metal regulating rod when the utility model is in use.

[0026] Figure 5 It is a schematic structural diagram of the maxillary braces and the mandibular braces of the present invention.

[0027] Figure 6It is an exploded schematic diagram of the metal regulating rod in the utility model.

[0028] Figure 7 It is a state diagram of the use process of the utility model.

[0029] Figure 8 It is a structural schematic diagram of the utility model from another angle.

[0030] Among them: 1 maxillary braces, 2 mandibular braces, 4 spacers, 5 first mounting plate, 6.6 first screw, 7 arcuate groove, 8 second mounting plate, 9 second screw, 10 arcuate block, 11 guide tube, 12 external thread, 13 first shoulder, 14 connecting plate, 15 first connecting hole, 16 adjusting cylinder, 17 jack, 18 internal threaded hole, 19 mounting groove, 20 rotating ring, 21 second shoulder, 22 spring, 23 guide rod, 24 connecting block, 25 second connecting hole, 26 nut. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described clearly and completely below in conjunction with specific embodiments.

[0032] like Figures 1-8 A mandibular advancement appliance for treating OSAHS is shown, which includes a maxillary brace 1 and a mandibular brace 2. First mounting plates 5 are symmetrically arranged on the posterior teeth area on both sides of the maxillary brace 1, and second mounting plates 8 are symmetrically arranged on the posterior teeth area on both sides of the mandibular brace 2. The second mounting plate 8 is located in front of the first mounting plate 5. The maxillary brace 1 and the mandibular brace 2 are formed by 3D printing, and a first screw 6 and a second screw 9 are pre-embedded on the first mounting plate 5 and the second mounting plate 8, respectively. A metal adjustment rod with adjustable length is hinged between the first screw 6 and the second screw 9.

[0033] In the mandibular advancement appliance for treating OSAHS, the maxillary braces 1 and mandibular braces 2 are directly printed using a 3D printer after pre-embedded screws, eliminating the impact of the molding process on precision and significantly improving production efficiency. The maxillary braces 1 and mandibular braces 2 are connected by an adjustable metal adjustment rod, allowing precise adjustment of the advancement distance of the mandibular brace 2 relative to the maxillary brace 1, resulting in excellent structural stability.

[0034] like Figure 5As shown, the first screw 6 is arranged at the bottom position of the first mounting plate 5, and the second screw 9 is arranged at the middle position of the second mounting plate 8. When the maxillary braces 1 and the mandibular braces 2 are fully fitted, the fitting surfaces of the maxillary braces 1 and the mandibular braces 2 are parallel to each other. In this embodiment, when the metal adjusting rod is installed on the maxillary braces 1 and the mandibular braces 2, the connecting plate 14 is located above the guide tube 11, and the first connecting hole 15 is arranged on the first screw 6 and then fixed by the nut 26, and the second connecting hole 25 is arranged on the second screw 9 and then fixed by the nut 26. Such a design can make the force exerted by the metal adjusting rod on the mandibular braces 2 along the forward movement direction of the mandibular braces 2. During the correction process, the metal adjusting rod has no force in other directions on the maxillary and mandibular parts, and there is no need to apply a bite force to keep the maxillary braces 1 and the mandibular braces 2 fitted.

[0035] like Figure 6 As shown, in this embodiment, the metal adjustment rod includes a guide tube 11, an adjustment cylinder 16 and a guide rod 23. The inner diameter of the guide tube 11 is adapted to the outer diameter of the guide rod 23. A connecting plate 14 is fixed to the rear end of the guide tube 11, and an external thread 12 is provided on the outer surface of the front end. A first connecting hole 15 is opened on the connecting plate 14;

[0036] The inner wall of the adjusting cylinder 16 is provided with an internal threaded hole 18 adapted to the external thread 12. A plurality of insertion holes 17 are evenly arranged on the circumference of the front side wall of the adjusting cylinder 16. The rear end surface of the adjusting cylinder 16 is provided with a mounting groove 19 with a larger hole diameter than the internal threaded hole 18. The inner diameter of the mounting groove 19 is larger than the maximum diameter of the spring 22.

[0037] The guide rod 23 is inserted into the guide tube 11. A connecting block 24 is fixed to the front end of the guide rod 23. A second connecting hole 25 is formed on the connecting block 24.

[0038] The connecting plate 14 is hinged to the first mounting plate 5 at the rear end of the maxillary braces 1, and the connecting block 24 is hinged to the second mounting plate 8 at the rear end of the mandibular braces 2. Since the connecting block 24 is inserted into the guide tube 11 through the guide rod 23, the length of the metal adjusting rod can be adjusted by rotating the adjusting cylinder 16, and the mandibular braces 2 will move forward and backward relative to the maxillary braces 1. Figure 1 and Figure 3 , Figure 3 Mandibular braces 2 relative Figure 1 The mandibular braces 2 in the middle are moved forward. The front part of the guide tube 11 is provided with a spring 22, the front end of which is located in the mounting groove 19. The spring 22 is provided to support the guide tube 11 and the adjustment cylinder 16 to prevent the adjustment cylinder 16 from shifting backward. When the mandibular braces 2 and the maxillary braces 1 are opened, the guide rod 23 can provide the required opening angle by sliding outward in the guide tube 11. Figure 7 .

[0039] As a further optimization, the guide tube 11 is provided with a first shoulder 13 at the rear end of the external thread 12, and the diameter of the guide tube 11 in front of the first shoulder 13 is smaller than the diameter of the guide tube 11 behind the first shoulder 13. The maximum diameter of the spring 22 is smaller than the outer diameter of the first shoulder 13, ensuring uniform force on the end of the spring 22 and a simple overall structure.

[0040] As a further optimization, a rotating ring 20 is rotatably provided at the bottom of the mounting groove 19. A lubricating layer (lubricant may be used) or a miniature thrust ball bearing is provided between the rotating ring 20 and the bottom of the mounting groove 19. When adjusting the length of the metal adjusting rod, the adjustment is performed by inserting the key into the socket 17 and rotating the adjusting cylinder 16. During the adjustment process, the spring 22 rubs against the first shoulder 13 and the bottom of the mounting groove 19, which can easily cause the spring 19 to twist and deform. After the length of the metal adjusting rod is adjusted, the torsional force of the spring 19 can easily cause the adjusting cylinder 16 and the guide tube 11 to rotate relative to each other and reset, which is not conducive to adjustment and can affect the adjustment accuracy. The provision of the rotating ring 20 can avoid this situation and ensure the adjustment accuracy of the metal adjusting rod.

[0041] As a further optimization, an arcuate groove 7 is provided on the front side of the first mounting plate 5, and an arcuate block 10 corresponding to the arcuate groove 7 is provided on the rear side of the second mounting plate 8. By providing the arcuate groove 7 and the arcuate block 10, the maxillary braces 1 and the mandibular braces 2 can be clamped together, which facilitates transportation and storage and is less likely to deform when squeezed.

[0042] As a further optimization, the maxillary braces 1 and mandibular braces 2 are oval braces that fit the dental arch. Spacers 4 are provided on the opposite sides of the posterior teeth of the maxillary braces 1 and mandibular braces 2. The spacers 4 allow the anterior teeth to remain free after the maxillary braces 1 and mandibular braces 2 are fitted.

[0043] In addition, a key rod corresponding to the insertion hole 17 is provided for adjusting the relative position of the adjustment cylinder 16 and the guide tube 11 .

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mandibular advancement appliance for treating OSAHS, characterized by: It comprises a maxillary brace (1) and a mandibular brace (2), wherein first mounting plates (5) are symmetrically arranged at the posterior tooth areas on both sides of the maxillary brace (1), and second mounting plates (8) are symmetrically arranged at the posterior tooth areas on both sides of the mandibular brace (2), and the second mounting plates (8) are located in front of the first mounting plates (5). The maxillary brace (1) and the mandibular brace (2) are formed by 3D printing, and a first screw (6) and a second screw (9) are pre-embedded on the first mounting plate (5) and the second mounting plate (8), respectively, and a metal adjustment rod with adjustable length is hinged between the first screw (6) and the second screw (9).

2. The mandibular advancement appliance for treating OSAHS according to claim 1, characterized in that: The first screw (6) is arranged at the bottom of the first mounting plate (5), and the second screw (9) is arranged at the middle of the second mounting plate (8). When the maxillary braces (1) and the mandibular braces (2) are completely fitted together, the fitting surfaces of the maxillary braces (1) and the mandibular braces (2) are parallel to the metal adjustment rod.

3. The mandibular advancement appliance for treating OSAHS according to claim 1, characterized in that: The metal adjustment rod comprises a guide tube (11), an adjustment cylinder (16) and a guide rod (23); the inner diameter of the guide tube (11) is adapted to the outer diameter of the guide rod (23); a connecting plate (14) is fixedly provided at the rear end of the guide tube (11); an external thread (12) is provided on the outer surface of the front end; and a first connecting hole (15) is provided on the connecting plate (14); The inner wall of the adjusting cylinder (16) is provided with an internal thread hole (18) adapted to the external thread (12); the front side wall of the adjusting cylinder (16) is provided with a plurality of jacks (17) uniformly arranged circumferentially; the rear end surface of the adjusting cylinder (16) is provided with a mounting groove (19) having a larger diameter than the internal thread hole (18); The guide rod (23) is inserted into the guide tube (11), a connecting block (24) is fixedly provided at the front end of the guide rod (23), and a second connecting hole (25) is provided on the connecting block (24); A spring (22) is sleeved on the front of the guide tube (11), and the front end of the spring (22) is located in the installation groove (19).

4. The mandibular advancement appliance for treating OSAHS according to claim 3, characterized in that: The guide tube (11) is provided with a first shaft shoulder (13) at the rear end of the external thread (12), and the diameter of the guide tube (11) in front of the first shaft shoulder (13) is smaller than the diameter of the guide tube (11) in the rear end of the first shaft shoulder (13).

5. The mandibular advancement appliance for treating OSAHS according to claim 4, characterized in that: A rotating ring (20) is rotatably provided at the bottom of the installation groove (19), and a lubricating layer or a miniature thrust ball bearing is provided between the rotating ring (20) and the bottom of the installation groove (19).

6. The mandibular advancement appliance for treating OSAHS according to claim 4 or 5, characterized in that: When the metal adjustment rod is mounted on the maxillary braces (1) and the mandibular braces (2), the connecting plate (14) is located above the guide tube (11), the first connecting hole (15) is arranged on the first screw (6) and then fixed by a nut (26), and the second connecting hole (25) is arranged on the second screw (9) and then fixed by a nut (26).

7. The mandibular advancement appliance for treating OSAHS according to claim 1, characterized in that: An arc-shaped groove (7) is provided on the front side of the first mounting plate (5), and an arc-shaped block (10) corresponding to the arc-shaped groove (7) is provided on the rear side of the second mounting plate (8).

8. The mandibular advancement appliance for treating OSAHS according to claim 1, characterized in that: The maxillary braces (1) and the mandibular braces (2) are oval braces that fit the shape of the dental arch.

9. The mandibular advancement appliance for treating OSAHS according to claim 1, characterized in that: Pads (4) are provided on opposite sides of the posterior tooth areas of the maxillary braces (1) and the mandibular braces (2).

10. The mandibular advancement appliance for treating OSAHS according to claim 3, characterized in that: A key rod corresponding to the jack (17) is also provided for adjusting the relative position of the adjusting cylinder (16) and the guide tube (11).

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