Jaw correction device

Abstract

The present invention relates to the field of orthodontic technology, specifically a jaw correction device, including three steps of model making, correction adjustment and continuous traction, wherein the correction adjustment includes installing the spiral expander body, using a tool to rotate the second bevel gear through the adjustment hole, so that the second bevel gear drives the two first bevel gears to rotate, thereby driving the two adjustment screws to rotate, driving the two spiral expander bodies to slowly move away from each other, and expanding the jaw. The device achieves the expansion of the jaw by adjusting the spacing of the spiral expander bodies, inserting the tool into the adjustment hole and rotating it, driving the synchronization rod and the bevel gear system to work, so that the two spiral expander bodies can move synchronously and evenly in the direction away from each other. This adjustment method is not only easy to operate, but also can accurately control the amplitude and frequency of the expansion, and the traction correction effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of tooth correction, in particular to a jaw correction device. Background Art

[0002] In orthodontic clinics, skeletal Class III malocclusion with maxillary underdevelopment is a common malocclusion, which not only affects the patient's aesthetics, but also affects the patient's occlusal function, tooth health, respiratory function, and even the stability of the entire oral and maxillofacial system.

[0003] In recent years, many scholars have proposed different corrective devices and methods, but these devices or methods have some limitations, such as the maxillary dental anchorage device combined with an extraoral anterior traction device; using the dentition as intraoral anchorage, the maxillary bone moves forward less and the dentition moves forward more; the patient's age or the degree of craniofacial suture closure significantly affects the correction effect, and the optimal correction time is short; the anterior traction device is exposed to the patient's face, the patient's acceptance is low, and it can only be worn at night, and the time for applying the correction force is limited.

[0004] Or, as provided in the publication number "CN111568573A", an appliance for correcting maxillary skeletal width discrepancy, this patented technology sets a positioning guide and an implantation guide, which cooperate to locate the implantation position of the expander and the implantation screw, thereby reducing the difficulty of positioning the expander and improving the positioning accuracy. At the same time, by wearing a transparent brace, the patient avoids the mesial movement of the crown of the central incisor, and the root of the central incisor will gradually gather under the traction of the gingival fibers, thereby reducing the need for the root control movement of the central incisor in the later stage, shortening the treatment course, and alleviating the patient's pain;

[0005] However, since the expander needs to be adjusted regularly during use, different users have different rotation ranges when making adjustments, which can easily lead to over-expansion or under-expansion, affecting the continuity and stability of the correction process and thus affecting the correction effect.

[0006] Therefore, those skilled in the art provide a jaw correction device to solve the problems raised in the above background technology. Summary of the invention

[0007] The object of the present invention is to provide a jaw correction device to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A method for jaw correction comprises the following steps:

[0010] Make an oral model, and determine the position of the spiral expander body in the maxillary palate and the positions of the maxillary traction assembly and the mandibular molar traction ring according to the model. After the positions are determined, make the jaw correction assembly, fix the spiral expander body in the mouth through the implantation hole, and sleeve the maxillary molar traction ring on the molar in the mouth;

[0011] After installing the spiral expander body, use a tool to rotate the second bevel gear through the adjustment hole, so that the second bevel gear drives the two first bevel gears to rotate, thereby driving the two adjustment screws to rotate. When the two adjustment screws rotate, the two spiral expander bodies are driven to slowly move away from each other to expand the jaw. The frequency of expansion of the spiral expander body is once every other day, 2 / 6 of a circle each time, and the number of expansions is determined according to the correction value of the transverse width of the maxillary bone;

[0012] Connect one end of the left and right elastic traction lines to the traction hook on the maxillary molar traction ring, and the other end to the traction hook on the mandibular molar traction ring. The traction force on each side is between 250-350g. The traction time is all day, and the traction cycle is until the front teeth cover reaches about 2mm.

[0013] A jaw correction device, wherein the jaw correction components are divided into two groups, an adjustment component is arranged between the two groups of jaw correction components, two ends of the adjustment component respectively penetrate the adjacent jaw correction components and extend to the outside of the two groups of jaw correction components, and the adjustment component is also provided with a control mechanism for controlling the moving distance of the two groups of jaw correction components;

[0014] The mandibular molar traction ring is arranged directly below the maxillary traction assembly, and the mandibular molar traction ring is connected to the maxillary traction assembly via an elastic traction line.

[0015] Preferably: the jaw correction component comprises a spiral expander body, a protective sleeve is arranged on the surface of the spiral expander body, the implantation holes are opened at both ends of the spiral expander body, each of the implantation holes is provided with an implantation nail, a plurality of movable holes are opened on the side wall of the spiral expander body, and a thread groove is arranged in one of the movable holes;

[0016] The U-shaped fixing blocks are installed on the opposite sides of the two groups of spiral expander bodies, and the two groups of spiral expander bodies are connected to the maxillary traction components through a plurality of U-shaped fixing blocks.

[0017] Preferably: the maxillary traction assembly comprises a connecting rod, one end of which is arranged in a U-shaped fixing block on the main body of the spiral expander, the maxillary molar traction ring is fixedly connected to the other end of the connecting rod, the maxillary molar traction ring is sleeved on the molars in the oral cavity, the traction hook is arranged on the same side of the maxillary molar traction ring and the mandibular molar traction ring, and the two ends of the elastic traction line are respectively fixed to the traction hooks on the maxillary molar traction ring and the mandibular molar traction ring;

[0018] The connecting rod is provided with screws, and the connecting rod is detachably fixed to the U-shaped fixing block by the screws.

[0019] Preferably: the adjustment assembly includes an adjustment frame, in which two adjustment screws and two limit slide bars are arranged, both ends of the two limit slide bars penetrate the movable holes on the adjustment frame and the spiral expander body and extend to the outsides of the two spiral expander bodies, the two adjustment screws are respectively threadedly connected to the movable holes provided with thread grooves on the adjacent spiral expander bodies, the two first bevel gears are respectively fixedly connected to the adjacent adjustment screws, the second bevel gear is arranged above the two first bevel gears, and the second bevel gear is meshed with the two first bevel gears;

[0020] One end of the second bevel gear away from the two first bevel gears is fixedly connected with a synchronization rod, the top of the synchronization rod extends to the outer surface of the adjustment frame, and the top of the synchronization rod is provided with an adjustment hole for driving the second bevel gear to rotate.

[0021] Preferably: a one-way bearing is also provided in the synchronization rod, a driving tooth is installed on the synchronization rod, and the driving tooth is fixed to the one-way bearing in the synchronization rod, a torsion spring is also sleeved on the synchronization rod, one end of the torsion spring is fixed on the driving tooth, and the other end is fixed to the inner wall at the top of the adjustment frame, and a limiting vertical rod is also installed at the bottom of the driving tooth, and the limiting vertical rod assists the regulating mechanism to limit the rotation angle of the driving tooth.

[0022] Preferably: the regulating mechanism comprises a synchronous moving component installed in the regulating frame and a limiting component arranged in the synchronous moving component;

[0023] The synchronous moving assembly includes a fixed box, a synchronous rack and a driven gear are arranged on the top of the fixed box, the synchronous rack is meshed with the driven gear, and the driven gear is meshed with the active tooth on the synchronous rod, the diameter of the driven gear is smaller than the diameter of the active tooth, and a sliding block is also installed in the fixed box, and a limiting abutment plate is installed on the end of the sliding block close to the synchronous rod, and a connecting rod is fixedly connected to the bottom of the synchronous rack, and the other end of the connecting rod passes through the surface of the fixed box and extends to the interior of the fixed box, and an abutment block is installed on the extended end of the connecting rod, and the abutment block slides on the sliding block, and a groove for the abutment block to slide is provided at the bottom of the limiting abutment plate.

[0024] Preferably: the limit assembly comprises an adjustment box, the adjustment box is installed on a side of the fixed box away from the synchronous rack, an adjustment slot is provided on a side of the top of the adjustment box close to the synchronous rack, a fixed cylinder is installed in the adjustment slot, a first return spring is sleeved on the fixed cylinder, a slider is fixedly connected to the other end of the first return spring, the slider slides in the adjustment slot, and a first abutment rod is installed on a side of the slider away from the first return spring;

[0025] A clamping block is also provided on the side of the slider close to the synchronous rack, and a limiting groove for the sliding of the clamping block is opened on the side wall of the adjusting box. The clamping block slides on the sliding block through the limiting groove. A second return spring is also provided in the slider, and the other end of the second return spring is fixed to the clamping block.

[0026] Preferably, a second abutment rod is further installed on one side of the adjustment box close to the synchronization rod, and the second abutment rod penetrates the surface of the fixed box and extends to the outside of the fixed box.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The present invention achieves the expansion of the mandible by adjusting the spacing between the main bodies of the spiral expander. This design cleverly utilizes the mechanical principle. By inserting the tool into the adjustment hole and rotating it, the synchronization rod and the bevel gear system are driven to work, so that the two main bodies of the spiral expander can move synchronously and evenly in the direction away from each other. This adjustment method is not only easy to operate, but also can accurately control the amplitude and frequency of the expansion, ensuring the stability and predictability of the correction effect. At the same time, the overall structure is small and convenient to use. It can be pulled all day, which greatly improves the correction effect.

[0029] 2. The present invention is also equipped with an elastic traction system, which realizes precise control of the traction force of the jaw through the elastic traction line between the mandibular molar traction ring and the maxillary molar traction ring. This traction method can not only effectively promote the growth and development of the jaw, but also adjust the arrangement and occlusion of the teeth to achieve a comprehensive correction effect. In addition, the continuity and all-day nature of the traction force ensure the continuity and stability of the correction effect.

[0030] 3. The present invention effectively prevents harm to the user of the device caused by excessive expansion by designing safety mechanisms such as a limit vertical rod and an abutment rod. When adjusted to the limit of each adjustment, the limit vertical rod will abut against the second abutment rod and cannot continue to rotate, thereby reminding the user to stop the operation. This design not only protects the safety of the patient, but also improves the controllability and reliability of the correction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a flow chart of the correction process of the present invention;

[0032] Figure 2 It is a schematic diagram of the first viewing angle of the present invention;

[0033] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0034] Figure 4 It is a schematic diagram of the internal structure of the present invention;

[0035] Figure 5 It is a structural schematic diagram of the connection between the adjustment component and the synchronous movement component in the present invention;

[0036] Figure 6 It is a structural schematic diagram of the synchronous moving component in the present invention;

[0037] Figure 7 It is a schematic diagram of the structure of the limit assembly in the present invention;

[0038] Figure 8 It is a schematic diagram of the structure on the synchronous rack in the present invention;

[0039] Fig. 9 It is a partial structural cross-sectional view of the limiting component in the present invention;

[0040] Fig.10 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle;

[0041] Fig.11 It is a front view of the present invention when in use.

[0042] In the figure: 1. jaw correction component; 11. protective sleeve; 12. spiral expander body; 13. implant hole; 14. U-shaped fixing block; 15. moving hole; 2. maxillary traction component; 21. connecting rod; 22. maxillary molar traction ring; 3. adjustment component; 31. adjustment frame; 32. adjustment screw; 33. limit slide rod; 34. first bevel gear; 35. second bevel gear; 36. synchronization rod; 37. driving tooth; 38. limit vertical rod; 39. Adjustment hole; 4. Synchronous moving component; 41. Fixed box; 42. Synchronous rack; 43. Abutment block; 44. Driven gear; 45. Sliding block; 46. Limiting abutment plate; 5. Limiting component; 51. Adjustment box; 52. Adjustment groove; 53. Fixed cylinder; 54. First return spring; 55. Sliding block; 56. First abutment rod; 57. Second abutment rod; 58. Clamping block; 59. Second return spring; 6. Mandibular molar traction ring; 7. Elastic traction line. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and 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 therefore cannot be understood as a limitation on the present invention.

[0045] For example, see Figure 1-11 , the present invention provides a method for jaw correction, which is as follows;

[0046] When in use, first determine the installation positions of the two spiral expander bodies 12 according to the pre-made oral model. After determination, use implant pins under local anesthesia to fix the two spiral expander bodies 12 to the upper jaw through the implant holes 13 on the spiral expander bodies 12, and fix multiple maxillary molar traction rings 22 to the adjacent molars to fix the device in the oral cavity;

[0047] After being fixed, the device is adjusted according to the actual situation of the user. The expansion frequency is once every other day, and each time the expansion is 2 / 6 of a circle. The number of expansions is determined according to the transverse width correction value of the maxillary bone. When in use, a tool is inserted into the adjustment hole 39 and rotated. The adjustment hole 39 drives the synchronization rod 36 to rotate, so that the second bevel gear 35 drives the two first bevel gears 34 to rotate, so that the two adjustment screws 32 rotate at the same time. The adjustment screw 32 is adapted to the thread groove in the moving hole 15 on the spiral expander body 12. Therefore, when the adjustment screw 32 rotates, it drives the two spiral expander bodies 12 to move away from each other, and the jaw is expanded by the movement of the two spiral expander bodies 12;

[0048] At the same time, the mandibular molar traction ring 6 is set on the lower molar, and one end of the left and right elastic traction lines 7 is connected to the traction hook on the maxillary molar traction ring 22, and the other end is connected to the traction hook on the mandibular molar traction ring 6. The traction force value on each side is between 250-350g, the traction time is all day, and the traction cycle is until the front teeth cover reaches about 2mm;

[0049] When the synchronous rod 36 is driven to rotate through the adjustment hole 39, the active tooth 37 drives the driven gear 44 to rotate at the same time, and the synchronous rack 42 is driven to slide toward the direction of the synchronous rod 36 through the driven gear 44. The abutment block 43 on the synchronous rack 42 pushes the clamping block 58 at the front end of the slider 55, and the slider 55 is driven to slide in the adjustment groove 52 through the clamping block 58, so that the first abutment rod 56 extends out of the fixed box 41. After rotating the active tooth 37 twice, the limit vertical rod 38 will contact with the first abutment rod 56 but not completely stuck, and the user can clearly feel that it is blocked when rotating;

[0050] When the synchronous rod 36 continues to rotate, the synchronous rack 42 continues to slide forward. At this time, the inclined surface of the clamping block 58 contacts the inclined surface of the limiting abutment plate 46. Under the action of the abutment block 43 and the limiting abutment plate 46, the clamping block 58 slides toward the inside of the slider 55, so that the synchronous rack 42 passes over the clamping block 58 and continues to slide forward. The second return spring 59 in the slider 55 drives the clamping block 58 to pop out from the slider 55. At the same time, under the action of the rebound force of the first return spring 54, the slider 55 is driven to slide and reset, so that the first abutment rod 56 is retracted, so that the active tooth 37 can continue to drive the limiting vertical rod 38 to rotate;

[0051] After rotating six times, the limit vertical rod 38 abuts against the second abutment rod 57 on the adjustment box 51 and cannot continue to rotate under the limit of the second abutment rod 57, thereby reminding the user that the rotation has reached the limit of each adjustment, avoiding continued rotation that causes excessive expansion and causes harm to the user of the device.

[0052] For example 2, please refer to Figure 1-11The present invention also provides a jaw correction device, comprising two groups of jaw correction components 1 and a maxillary traction component 2 installed on the jaw correction component 1, an adjustment component 3 for adjusting the distance between the two groups of jaw correction components 1 is arranged between the two groups of jaw correction components 1, the two ends of the adjustment component 3 respectively penetrate the adjacent jaw correction components 1 and extend to the outside of the two groups of jaw correction components 1, the adjustment component 3 is also provided with a control mechanism for controlling the moving distance of the two groups of jaw correction components 1, a mandibular molar traction ring 6 is also arranged directly below the maxillary traction component 2, the mandibular molar traction ring 6 is connected to the maxillary traction component 2 by an elastic traction line 7, the jaw correction component 1 comprises a spiral expander body 12, a protective sleeve 11 is arranged on the surface of the spiral expander body 12, implantation holes 13 are opened at both ends of the spiral expander body 12, each implantation hole 13 is arranged with an implant nail, and the side wall of the spiral expander body 12 A plurality of movable holes 15 are provided, and a thread groove is provided in one of the movable holes 15. Two U-shaped fixing blocks 14 are provided on the opposite sides of the two groups of spiral expander bodies 12. The two groups of spiral expander bodies 12 are connected to the maxillary traction assembly 2 through the plurality of U-shaped fixing blocks 14. The maxillary traction assembly 2 includes a connecting rod 21. One end of the connecting rod 21 is provided in the U-shaped fixing block 14 on the spiral expander body 12, and the other end is fixedly connected with a maxillary molar traction ring 22. The maxillary molar traction ring 22 is sleeved on the molars in the oral cavity. A traction hook is provided on one side of the maxillary molar traction ring 22. The mandibular molar traction ring 6 is provided with a traction hook at the same position as that on the maxillary molar traction ring 22. The two ends of the elastic traction line 7 are respectively fixed to the traction hooks on the maxillary molar traction ring 22 and the mandibular molar traction ring 6. A screw is provided on the connecting rod 21, and the connecting rod 21 is detachably fixed to the U-shaped fixing block 14 by the screw.

[0053] The adjustment assembly 3 includes an adjustment frame 31, in which two adjustment screws 32 and two limiting slide bars 33 are arranged. Both ends of the two limiting slide bars 33 pass through the adjustment frame 31 and the moving holes 15 on the spiral expander body 12 and extend to the outside of the two spiral expander bodies 12. The two adjustment screws 32 are respectively threadedly connected to the moving holes 15 with thread grooves on the adjacent spiral expander bodies 12. The facing surfaces of the two adjustment screws 32 are fixedly connected with the first bevel gears 34. The second bevel gears 35 are arranged above the two first bevel gears 34, and the second bevel gears 35 are meshed with the two first bevel gears 34. The second bevel gears 35 are away from the two One end of the first bevel gear 34 is fixedly connected to a synchronization rod 36, the top of the synchronization rod 36 extends to the outer surface of the adjustment frame 31, the top of the synchronization rod 36 is provided with an adjustment hole 39 for driving the second bevel gear 35 to rotate, a one-way bearing is also provided in the synchronization rod 36, a driving tooth 37 is installed on the synchronization rod 36, and the driving tooth 37 is fixed to the one-way bearing in the synchronization rod 36, a torsion spring is also sleeved on the synchronization rod 36, one end of the torsion spring is fixed on the driving tooth 37, and the other end is fixed to the inner wall of the top of the adjustment frame 31, a limit vertical rod 38 is also installed at the bottom of the driving tooth 37, and the limit vertical rod 38 assists the control mechanism to limit the rotation angle of the driving tooth 37.

[0054] Specifically, when the device is used, the installation positions of the two spiral expander bodies 12 are first determined according to the pre-made oral model. After the determination, the two spiral expander bodies 12 are fixed to the upper jaw through the implantation holes 13 on the spiral expander bodies 12 using implant nails under local anesthesia, and multiple maxillary molar traction rings 22 are fixed to adjacent molars, so that the device is fixed in the oral cavity;

[0055] After being fixed, the device is adjusted according to the actual situation of the user. The expansion frequency is once every other day, and each time the expansion is 2 / 6 of a circle. The number of expansions is determined according to the transverse width correction value of the maxillary bone. When in use, a tool is inserted into the adjustment hole 39 and rotated. The adjustment hole 39 drives the synchronization rod 36 to rotate, so that the second bevel gear 35 drives the two first bevel gears 34 to rotate, so that the two adjustment screws 32 rotate at the same time. The adjustment screw 32 is adapted to the thread groove in the moving hole 15 on the spiral expander body 12. Therefore, when the adjustment screw 32 rotates, it drives the two spiral expander bodies 12 to move away from each other, and the jaw is expanded by the movement of the two spiral expander bodies 12;

[0056] At the same time, by means of the limiting vertical rod 38 provided on the active tooth 37 and the auxiliary regulating mechanism in the regulating frame 31, the rotation amplitude of the active tooth 37 can be controlled to avoid excessive rotation causing harm to the user;

[0057] When the synchronous rod 36 is driven to rotate through the adjustment hole 39, the torsion spring on the synchronous rod 36 rotates and stores force at the same time. When the device is adjusted through the synchronous rod 36, the tool is pulled out of the adjustment hole 39. At this time, the torsion starts to rebound and drives the active gear 37 to rotate. Under the action of the one-way bearing, the synchronous rod 36 will not rotate synchronously with the active gear 37. The active gear 37 and the limit vertical rod 38 are reset by the torsion spring, which is convenient for the next adjustment and correction.

[0058] At the same time, the mandibular molar traction ring 6 is placed on the lower molars, and one end of the left and right elastic traction lines 7 is connected to the traction hooks on the maxillary molar traction ring 22, and the other end is connected to the traction hooks on the mandibular molar traction ring 6. The traction force value on each side is between 250-350g of the second bevel gear. The traction time is all day, and the traction cycle is until the front teeth cover reaches about 2mm.

[0059] On the basis of the above embodiment, the regulating mechanism includes a synchronous moving component 4 installed in the regulating frame 31 and a limiting component 5 arranged in the synchronous moving component 4, the synchronous moving component 4 includes a fixed box 41, a synchronous rack 42 and a driven gear 44 are arranged on the top of the fixed box 41, the synchronous rack 42 is meshed with the driven gear 44, and the driven gear 44 is meshed with the active gear 37 on the synchronous rod 36, the diameter of the driven gear 44 is smaller than the diameter of the active gear 37, a sliding block 45 is also installed in the fixed box 41, and a limiting abutment plate 46 is installed on one end of the sliding block 45 close to the synchronous rod 36, the bottom of the synchronous rack 42 is fixedly connected with a connecting rod, the other end of the connecting rod passes through the surface of the fixed box 41 and extends to the inside of the fixed box 41, the extended end of the connecting rod is installed with an abutment block 43, the abutment block 43 slides on the sliding block 45, and the bottom of the limiting abutment plate 46 is provided with a groove for the abutment block 43 to slide, the limiting component 5 includes an regulating box 51, the regulating box 5 1 is installed on the side of the fixed box 41 away from the synchronous rack 42. An adjusting groove 52 is provided on the top of the adjusting box 51 near the synchronous rack 42. A fixing cylinder 53 is installed in the adjusting groove 52. A first return spring 54 is sleeved on the fixing cylinder 53. The other end of the first return spring 54 is fixedly connected to a slider 55. The slider 55 slides in the adjusting groove 52. A first abutting rod 56 is installed on the side of the slider 55 away from the first return spring 54. A clamping block 58 is also provided on the side of the slider 55 near the synchronous rack 42. A limiting groove for the clamping block 58 to slide is provided on the side wall of the adjusting box 51. The clamping block 58 passes through the limiting groove and slides on the sliding block 45. A second return spring 59 is also provided in the slider 55. The other end of the second return spring 59 is fixed to the clamping block 58. A second abutting rod 57 is also installed on the side of the adjusting box 51 near the synchronous rod 36. The second abutting rod 57 passes through the surface of the fixed box 41 and extends to the outside of the fixed box 41.

[0060] When in use, when the synchronization rod 36 is driven to rotate through the adjustment hole 39, the driving tooth 37 simultaneously drives the driven gear 44 to rotate. When the driven gear 44 rotates, the synchronization rack 42 is driven by the driven gear 44 to slide toward the synchronization rod 36. When the synchronization rack 42 slides, the abutment block 43 on the synchronization rack 42 pushes the clamping block 58 at the front end of the slider 55, and the slider 55 is simultaneously driven to slide in the adjustment slot 52 through the clamping block 58, so that the first abutment rod 56 extends out of the fixed box 41.

[0061] When the active gear 37 rotates, the limiting vertical rod 38 at the bottom of the active gear 37 moves with the active gear 37 at the same time. After the active gear 37 is rotated twice, the first abutting rod 56 extends out from the fixed box 41, and the position where the first abutting rod 56 extends is consistent with the position of the limiting vertical rod 38 after the active gear 37 is rotated twice. Therefore, after the active gear 37 is rotated twice, the limiting vertical rod 38 will contact with the first abutting rod 56 but will not be completely stuck. The user can clearly feel that the rotation is blocked;

[0062] When the synchronization rod 36 continues to rotate, the synchronization rack 42 continues to slide forward, and at this time, the inclined surface of the clamping block 58 contacts the inclined surface of the limiting abutment plate 46. Under the action of the abutment block 43 and the limiting abutment plate 46, the clamping block 58 slides toward the inside of the slider 55, so that the synchronization rack 42 passes over the clamping block 58 and continues to slide forward;

[0063] When the synchronous rack 42 passes over the clamping block 58, the second return spring 59 in the slider 55 drives the clamping block 58 to pop out from the slider 55, and at the same time, the slider 55 is driven to slide and reset under the action of the rebound force of the first return spring 54, so that the first abutment rod 56 is retracted, so that the active tooth 37 can continue to drive the limit vertical rod 38 to rotate;

[0064] After rotating six times, the limit vertical rod 38 abuts against the second abutment rod 57 on the adjustment box 51 and cannot be rotated further under the limit of the second abutment rod 57, thereby reminding the user that the rotation has reached the limit of each adjustment, and preventing the user from being injured by excessive expansion due to continued rotation;

[0065] By providing the first abutment rod 56 and the second abutment rod 57, during use, the first abutment rod 56 and the second abutment rod 57 can remind the user at each adjustment to avoid ineffective expansion due to too small a rotation range or injury to the user due to too large a rotation range.

[0066] It should be noted that the various devices in this application are common devices in the market, and can be selected according to specific needs during specific use. The circuit connection relationship of each device belongs to a simple series and parallel connection circuit. There is no innovation in the circuit connection part. Those skilled in the art can implement it relatively easily. It belongs to the existing technology and will not be elaborated on.

[0067] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A jaw correction device, characterized in that: It comprises a jaw correction component (1) and a maxillary traction component (2) mounted on the jaw correction component (1); The jaw correction components (1) are divided into two groups, and an adjustment component (3) is arranged between the two groups of jaw correction components (1). The two ends of the adjustment component (3) respectively penetrate the adjacent jaw correction components (1) and extend to the outside of the two groups of jaw correction components (1). The adjustment component (3) is also provided with a regulating mechanism for controlling the moving distance of the two groups of jaw correction components (1); A mandibular molar traction ring (6) is arranged directly below the maxillary traction component (2), and the mandibular molar traction ring (6) is connected to the maxillary traction component (2) via an elastic traction line (7); The jaw correction component (1) comprises a spiral expander body (12), a protective sleeve (11) is arranged on the surface of the spiral expander body (12), implantation holes (13) are opened at both ends of the spiral expander body (12), and an implantation screw is arranged in each implantation hole (13); A plurality of movable holes (15) are provided on the side wall of the spiral expander body (12), and a thread groove is provided in one of the movable holes (15); U-shaped fixing blocks (14) are installed on opposite sides of the two sets of spiral enlarger bodies (12), and the two sets of spiral enlarger bodies (12) are connected to the maxillary traction assembly (2) via a plurality of U-shaped fixing blocks (14); The maxillary traction assembly (2) comprises a connecting rod (21), one end of which is arranged in a U-shaped fixing block (14) on the spiral expander body (12), and the other end of the connecting rod (21) is fixedly connected to a maxillary molar traction ring (22), the maxillary molar traction ring (22) is sleeved on the molars in the oral cavity, a traction hook is arranged on the same side of the maxillary molar traction ring (22) and the mandibular molar traction ring (6), and two ends of the elastic traction line (7) are respectively fixed to the traction hooks on the maxillary molar traction ring (22) and the mandibular molar traction ring (6); The connecting rod (21) is provided with a screw, and the connecting rod (21) is detachably fixed to the U-shaped fixing block (14) by means of the screw; The adjustment assembly (3) comprises an adjustment frame (31), wherein two adjustment screws (32) and two limiting slide bars (33) are arranged in the adjustment frame (31), both ends of the two limiting slide bars (33) penetrate the movable holes (15) on the adjustment frame (31) and the spiral expander body (12) and extend to the outsides of the two spiral expander bodies (12), the two adjustment screws (32) are respectively threadedly connected to the movable holes (15) provided with thread grooves on the adjacent spiral expander bodies (12), the facing surfaces of the two adjustment screws (32) are fixedly connected to the first bevel gears (34), the second bevel gears (35) are arranged above the two first bevel gears (34), and the second bevel gears (35) are meshed with the two first bevel gears (34); A synchronization rod (36) is fixedly connected to one end of the second bevel gear (35) away from the two first bevel gears (34); the top of the synchronization rod (36) extends to the outer surface of the adjustment frame (31); and an adjustment hole (39) is provided on the top of the synchronization rod (36) for driving the second bevel gear (35) to rotate; The regulating mechanism comprises a synchronous moving component (4) installed in the regulating frame (31) and a limiting component (5) arranged in the synchronous moving component (4); The synchronous moving assembly (4) comprises a fixed box (41), a synchronous rack (42) and a driven gear (44) are arranged on the top of the fixed box (41), the synchronous rack (42) is meshed with the driven gear (44), and the driven gear (44) is meshed with the driving gear (37) on the synchronous rod (36), the diameter of the driven gear (44) is smaller than the diameter of the driving gear (37), and a sliding block (45) is also installed in the fixed box (41); A one-way bearing is also provided in the synchronization rod (36), a driving tooth (37) is mounted on the synchronization rod (36), and the driving tooth (37) is fixed to the one-way bearing in the synchronization rod (36); The synchronization rod (36) is also sleeved with a torsion spring, one end of which is fixed to the active tooth (37), and the other end of which is fixed to the inner wall of the top of the adjustment frame (31); a limit vertical rod (38) is also installed at the bottom of the active tooth (37); the limit vertical rod (38) assists the regulating mechanism in limiting the rotation angle of the active tooth (37); A limiting abutment plate (46) is installed on one end of the sliding block (45) close to the synchronization rod (36); a connecting rod is fixedly connected to the bottom of the synchronization rack (42); the other end of the connecting rod penetrates the surface of the fixed box (41) and extends into the interior of the fixed box (41); an abutment block (43) is installed on the extended end of the connecting rod; the abutment block (43) slides on the sliding block (45); and a groove for the abutment block (43) to slide is provided at the bottom of the limiting abutment plate (46); The limit assembly (5) comprises an adjustment box (51), the adjustment box (51) being installed on a side of the fixed box (41) away from the synchronous rack (42), an adjustment slot (52) being provided on a top side of the adjustment box (51) close to the synchronous rack (42), a fixed cylinder (53) being installed in the adjustment slot (52), a first return spring (54) being sleeved on the fixed cylinder (53), a slider (55) being fixedly connected to the other end of the first return spring (54), the slider (55) sliding in the adjustment slot (52), and a first abutment rod (56) being installed on a side of the slider (55) away from the first return spring (54); A clamping block (58) is further provided on one side of the slide block (55) close to the synchronous rack (42); a limiting groove for the clamping block (58) to slide is provided on the side wall of the regulating box (51); the clamping block (58) passes through the limiting groove and slides on the slide block (45); a second return spring (59) is further provided in the slide block (55); the other end of the second return spring (59) is fixed to the clamping block (58); A second abutment rod (57) is also installed on one side of the adjustment box (51) close to the synchronization rod (36), and the second abutment rod (57) penetrates the surface of the fixed box (41) and extends to the outside of the fixed box (41).

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