High-position traction extraoral arch appliance

Abstract

The application provides a high-position traction extraoral arch appliance, which comprises an upper dental case, a traction mechanism and a headgear; the upper dental case is matched with upper teeth; the traction mechanism comprises an extraoral arch, a connecting piece and an adjusting mechanism; one end of the extraoral arch is installed on the upper dental case, the other end of the extraoral arch is connected with one end of the connecting piece, and the angle between the extraoral arch and the connecting piece can be adjusted through the adjusting mechanism; the headgear can be worn on the head, and the end of the connecting piece away from the extraoral arch is installed on the headgear; in the application, when the angle of the upper jaw changes, the angle between the extraoral arch and the connecting piece is adjusted through the adjusting mechanism, so as to adjust the angle of the headgear to the upper dental case, and the traction mechanism can be used to traction the upper jaw at the best angle; and the upper jaw and the upper dental case are used for correction at the same time, so that the correction effect can be greatly improved.

Description

Technical Field

[0001] This invention relates to the field of orthodontic technology, specifically to a high-position traction external orthodontic appliance. Background Technology

[0002] High-angle and low-angle facial features are two types used to describe abnormal facial development in the vertical direction; high-angle refers to excessive development of the facial features in the vertical direction. The first onset of symptoms is usually around age 7, and treatment should be completed before the age of 12. Beyond this time, the developmental stage becomes more fixed, greatly increasing the difficulty of treatment. Therefore, timely treatment is necessary for high-angle facial features.

[0003] Currently, to treat high-angle facial development abnormalities, reduce the mandibular angle, and control vertical development, the common methods include: using an extraoral arch to apply high traction to the maxilla, causing it to move upwards and thus controlling vertical development; or using invisible braces to level the occlusal curve, reduce its steepness, and rotate the mandible counterclockwise to control vertical development. However, during orthodontic treatment, the mandibular angle gradually changes, and the effectiveness of the extraoral arch treatment gradually diminishes, thus reducing the overall therapeutic effect. Summary of the Invention

[0004] In view of the above-mentioned problems in the existing technology, the technical problem to be solved by the present invention is that during the orthodontic treatment, the angle of the mandibular angle gradually changes, and the orthodontic effect of the extraoral arch will gradually decrease, thus reducing the orthodontic effect.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a high-position traction external orifice correction device, comprising:

[0006] Upper dental braces, which fit into the upper teeth;

[0007] A traction mechanism, comprising an external oral bow, a connector, and an adjustment mechanism; one end of the external oral bow is mounted on the upper dental brace, the other end of the external oral bow is connected to one end of the connector, and the angle between the external oral bow and the connector can be adjusted by the adjustment mechanism; and

[0008] A headgear, which can be worn on the head, with the end of the connector away from the external bow mounted on the headgear.

[0009] In this invention, when the angle of the maxilla changes, the angle between the extraoral arch and the connector is adjusted by an adjustment mechanism, thereby adjusting the angle of the headgear's traction on the upper braces. This allows the traction mechanism to apply traction to the maxilla at the optimal angle. Furthermore, simultaneous orthodontic treatment using both the extraoral arch and the upper braces significantly improves the treatment outcome.

[0010] Preferably, the adjusting mechanism includes an adjusting rod, an adjusting gear, an adjusting rack, and a control component. One end of the adjusting rod is mounted on the middle of the external bow and is hinged to the external bow. The other end of the adjusting rod is rotatably mounted with the adjusting gear. The connecting member has an elongated groove, and the adjusting gear is located within the groove. The adjusting rack is arranged along the length of the connecting member and is fixedly mounted within the groove. The adjusting rack is located on the side of the adjusting gear away from the adjusting rod, and the adjusting gear meshes with the adjusting rack. The control component controls the rotation of the adjusting gear. The control component controls the rotation of the adjusting gear, and under the action of the adjusting rack, the control gear moves in the direction of the adjusting rack, causing a change in the angle between the adjusting rod and the external bow. The adjusting rod pulls the connecting member to rotate, thereby adjusting the angle between the connecting member and the external bow.

[0011] Preferably, the control component includes a drive gear, a connecting plate, and a limiting member; the drive gear drives the adjusting gear to rotate, and the drive gear is located in a long groove and extends to the outside of the connector; the connector has a sliding groove along its length, the connecting plate is slidably installed in the sliding groove, and both the drive gear and the adjusting gear are rotatably installed on the connecting plate; the limiting member restricts the rotation of the drive gear. The drive gear drives the adjusting gear to rotate, the connecting plate limits the distance between the drive gear and the adjusting gear, and after angle adjustment, the limiting member restricts the rotation of the drive gear, thereby fixing the angle between the connector and the outer arch.

[0012] Preferably, the limiting component includes a pressing shaft, an intermediate gear, and a limiting gear; the pressing shaft is rotatably mounted on the connecting plate and can move along its axial direction; both the intermediate gear and the limiting gear are fixedly mounted on the pressing shaft, and the driving gear drives the adjusting gear to rotate through the intermediate gear; the connecting component is provided with a limiting through groove, which is arranged along the length direction of the connecting component, and multiple gear grooves are provided on both sides of the limiting through groove in the width direction; the limiting gear cooperates with the gear grooves, and the pressing shaft extends to the outside of the connecting component through the limiting through groove. The rotation of the limiting gear is restricted by the gear grooves on both sides, thereby restricting the rotation of the driving gear.

[0013] Preferably, the end of the connector away from the extraoral arch is mounted on the headgear via an adjusting plate; one end of the adjusting plate is mounted on the headgear, and the adjusting plate has multiple adjusting holes along its length; the end of the connector away from the extraoral arch has an adjusting head, which engages with the adjusting holes, and the multiple adjusting holes are evenly distributed, with two adjusting heads provided. By engaging the adjusting heads with different adjusting holes, the height of the extraoral arch and the upper brace can be adjusted to accommodate patients with different head shapes; by engaging the two adjusting heads with the two adjusting holes, rotation between the connector and the adjusting plate can be effectively prevented.

[0014] Preferably, the headgear has an arc-shaped groove, and a slider is slidably mounted within the arc-shaped groove. The end of the adjusting plate closest to the headgear is fixedly connected to the slider. The arc-shaped groove and the slider allow for smoother adjustment of the angle between the connector and the outer arch.

[0015] Preferably, a rubber pad is fitted on the outer side of the slider, and the slider is slidably mounted in the arc-shaped groove via the rubber pad. This ensures that after adjusting the height of the connector and the outer arch, the arc-shaped groove and the slider can still function due to the adaptive deformation of the rubber pad.

[0016] Preferably, the end of the external oral bow furthest from the connector is attached to the dental brace using a resin block. The external oral bow is then installed to the connector using the resin block.

[0017] Preferably, the end of the extraoral bow furthest from the connector is mounted on the upper brace and located between the lateral incisors and canines. Mounting the extraoral bow between the extraoral bows allows the extraoral bow to exert maximum force to depress the upper anterior teeth, thereby improving the orthodontic effect.

[0018] Preferably, it also includes a lower brace, which fits with the lower teeth and is used to correct the lower teeth.

[0019] Compared with the prior art, the present invention has at least the following advantages:

[0020] 1. Reducing the maxillary angle can treat high-angle facial profiles. In this invention, an upper dental brace is installed on the patient's upper teeth, and then a headgear is placed on the patient's head. The headgear applies an upward traction force to the upper dental brace through a traction mechanism, causing the upper dental brace to pull the maxilla upward and grow, thereby reducing the maxillary angle.

[0021] 2. The angle of the traction force can be adjusted so that the traction mechanism can apply traction to the maxilla at the optimal angle. In this invention, when the angle of the maxilla changes, the angle between the external arch and the connector is adjusted by the adjustment mechanism, thereby adjusting the angle of the headgear traction on the upper brace, so that the traction mechanism can apply traction to the maxilla at the optimal angle.

[0022] 3. Jaw development is corrected by using an extraoral arch, and the occlusal curve is corrected by using upper braces. By performing both extraoral arch and upper braces simultaneously, the treatment effect is greater than the sum of its parts, which can greatly improve the orthodontic results. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0024] Figure 1 This is a front view of a high-position traction external bow orthotics device provided in an embodiment of the present invention.

[0025] Figure 2 This is a top view of the upper dental brace and extraoral arch provided in an embodiment of the present invention.

[0026] Figure 3 This is a front view of the adjustment mechanism provided in an embodiment of the present invention.

[0027] Figure 4 This is a front sectional view of the connector provided in an embodiment of the present invention.

[0028] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0029] Reference numerals: 1-Upper dental brace, 2-External bow, 3-Connector, 31-Long groove, 32-Slide groove, 33-Limiting through groove, 34-Gear groove, 35-Adjusting head, 4-Adjusting mechanism, 41-Adjusting rod, 42-Adjusting gear, 43-Adjusting rack, 44-Drive gear, 45-Connecting plate, 46-Pressing shaft, 47-Intermediate gear, 48-Limiting gear, 5-Head cap, 51-Arc groove, 6-Adjusting plate, 61-Adjusting hole, 62-Slider, 63-Rubber pad, 7-Resin block. Detailed Implementation

[0030] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0031] In this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] See Figures 1-4 The present invention provides an embodiment of a high-position traction extraoral bow orthodontic appliance, comprising: an upper brace 1, a traction mechanism, and a headgear 5; the upper brace 1 fits with the upper teeth; the traction mechanism includes an extraoral bow 2, a connector 3, and an adjustment mechanism 4; one end of the extraoral bow 2 is mounted on the upper brace 1, and the other end of the extraoral bow 2 is connected to one end of the connector 3, and the angle between the extraoral bow 2 and the connector 3 can be adjusted by the adjustment mechanism 4; the headgear 5 can be worn on the head, and the end of the connector 3 away from the extraoral bow 2 is mounted on the headgear 5. Furthermore, it also includes a lower brace, which fits with the lower teeth for orthodontic treatment.

[0034] In practice, the upper braces 1 and lower braces can be invisible braces, made of colorless, completely transparent polymer materials. The upper braces 1 are installed on the patient's upper teeth, and the lower braces on their lower teeth. Then, a headgear 5 is placed on the patient's head. The headgear 5 applies an upward traction force to the upper braces 1 through a traction mechanism, causing the upper braces 1 to pull the maxilla upwards, thereby reducing the maxillary angle. Once the maxillary angle changes, the angle between the extraoral arch 2 and the connector 3 is adjusted by the adjustment mechanism 4, thus adjusting the traction angle of the headgear 5 on the upper braces 1, allowing the traction mechanism to apply optimal traction to the maxilla. Simultaneous treatment using the extraoral arch 2 and the upper braces 1 greatly improves the orthodontic effect.

[0035] See Figures 1-4In other embodiments, the adjustment mechanism 4 includes an adjustment rod 41, an adjustment gear 42, an adjustment rack 43, and a control component; one end of the adjustment rod 41 is installed in the middle of the external bow 2, and the other end of the adjustment rod 41 is hinged to the external bow 2, and the adjustment gear 42 is rotatably mounted on the other end of the adjustment rod 41; the connecting member 3 is provided with a long groove 31, and the adjustment gear 42 is located in the long groove 31; the adjustment rack 43 is arranged along the length direction of the connecting member 3, and the adjustment rack 43 is fixedly installed in the long groove 31, the adjustment rack 43 is located on the side of the adjustment gear 42 away from the adjustment rod 41, and the adjustment gear 42 meshes with the adjustment rack 43; the control component can control the rotation of the adjustment gear 42. In practice, when it is necessary to adjust the angle between the connector 3 and the external bow 2, the control component is activated. The control component controls the adjustment gear 42 to rotate. Under the action of the adjustment rack 43, the control gear moves in the direction of the adjustment rack 43, so that the angle between the adjustment rod 41 and the external bow 2 changes. The adjustment rod 41 pulls the connector 3 to rotate, thereby adjusting the angle between the connector 3 and the external bow 2.

[0036] See Figures 1-4 In other embodiments, the control components include a drive gear 44, a connecting plate 45, and a limiting member. The drive gear 44 drives the adjusting gear 42 to rotate. Specifically, the drive gear 44 can directly mesh with the adjusting gear 42 for driving, or it can drive the adjusting gear 42 to rotate through other gears, or it can drive the adjusting gear 42 to rotate through a chain or transmission belt. Any method that drives the adjusting gear 42 to rotate through the rotation of the drive gear 44 is acceptable. The drive gear 44 is located within the long groove 31 and extends to the outside of the connector 3. The connector 3 has a sliding groove 32 along its length, and the connecting plate 45 is slidably installed within the sliding groove 32. Both the drive gear 44 and the adjusting gear 42 are rotatably mounted on the connecting plate 45. The limiting member restricts the rotation of the drive gear 44. The drive gear 44 drives the adjusting gear 42 to rotate, and the connecting plate 45 limits the distance between the drive gear 44 and the adjusting gear 42. After the angle adjustment is completed, the limiting member restricts the rotation of the drive gear 44, thereby fixing the angle between the connector 3 and the outer bow 2.

[0037] See Figures 1-5In other embodiments, the limiting member includes a pressing shaft 46, an intermediate gear 47, and a limiting gear 48; the pressing shaft 46 is rotatably mounted on the connecting plate 45 and can move in its axial direction; the intermediate gear 47 and the limiting gear 48 are both fixedly mounted on the pressing shaft 46, and the driving gear 44 drives the adjusting gear 42 to rotate through the intermediate gear 47; the connecting member 3 is provided with a limiting through groove 33, the limiting through groove 33 is provided along the length direction of the connecting member 3, and multiple gear grooves 34 are provided on both sides in the width direction of the limiting through groove 33, the limiting gear 48 cooperates with the gear grooves 34, and the pressing shaft 46 extends to the outside of the connecting member 3 through the limiting through groove 33. In specific implementation, after the angle between the connector 3 and the outer bow 2 is adjusted, press the pressing shaft 46. The pressing shaft 46 drives the limiting gear 48 to move into the limiting through groove 33, so that the limiting gear 48 meshes with the gear grooves 34 on both sides of the limiting through groove 33. The limiting gear 48 is restricted from rotating by the gear grooves 34 on both sides, thereby restricting the rotation of the drive gear 44.

[0038] See Figures 1-4 In other embodiments, the end of the connector 3 furthest from the extraoral arch 2 is mounted on the headgear 5 via an adjusting plate 6; one end of the adjusting plate 6 is mounted on the headgear 5, and the adjusting plate 6 has multiple adjusting holes 61 along its length; the end of the connector 3 furthest from the extraoral arch 2 has an adjusting head 35, which engages with the adjusting holes 61. By engaging the adjusting head 35 with different adjusting holes 61, the height of the extraoral arch 2 and the upper brace 1 can be adjusted to accommodate patients with different head shapes. Furthermore, the multiple adjusting holes 61 are evenly distributed, and there are two adjusting heads 35. By engaging the two adjusting heads 35 with the two adjusting holes 61, rotation between the connector 3 and the adjusting plate 6 can be effectively prevented.

[0039] See Figure 1 In other embodiments, the headgear 5 is provided with an arc-shaped groove 51, and a slider 62 is slidably installed in the arc-shaped groove 51. The end of the adjusting plate 6 near the headgear 5 is fixedly connected to the slider 62. The arc-shaped groove 51 and the slider 62 make it easier to adjust the angle between the connecting member 3 and the external bow 2. Furthermore, a rubber pad 63 is sleeved on the outside of the slider 62, and the slider 62 is slidably installed in the arc-shaped groove 51 through the rubber pad 63. This allows the arc-shaped groove 51 and the slider 62 to still function after adjusting the height of the connecting member 3 and the external bow 2 through the adaptive deformation of the rubber pad 63.

[0040] See Figures 1-2In another embodiment, the end of the extraoral arch 2 furthest from the connector 3 is adhered to the braces via a resin block 7. The extraoral arch 2 and connector 3 are then installed using the resin block 7. Furthermore, the end of the extraoral arch 2 furthest from the connector 3 is installed on the upper braces 1 and positioned between the lateral incisors and canines. Installing the extraoral arch 2 between the extraoral arches allows the extraoral arch 2 to exert maximum force to depress the upper anterior teeth, thereby improving the orthodontic effect.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A high-position traction external orifice correction device, characterized in that, include: Upper dental braces, which fit into the upper teeth; A traction mechanism, comprising an external oral bow, a connector, and an adjustment mechanism; one end of the external oral bow is mounted on the upper dental brace, the other end of the external oral bow is connected to one end of the connector, and the angle between the external oral bow and the connector can be adjusted by the adjustment mechanism; and A headgear, the headgear being wearable on the head, with the end of the connector away from the external mouth bow mounted on the headgear; The adjusting mechanism includes an adjusting rod, an adjusting gear, an adjusting rack, and a control component. One end of the adjusting rod is mounted on the middle of the external bow and is hinged to the external bow. The other end of the adjusting rod is rotatably mounted with the adjusting gear. The connecting member has an elongated groove, and the adjusting gear is located within the groove. The adjusting rack is arranged along the length of the connecting member and is fixedly mounted within the groove. The adjusting rack is located on the side of the adjusting gear away from the adjusting rod, and the adjusting gear meshes with the adjusting rack. The control component can control the rotation of the adjusting gear. The control component includes a drive gear, a connecting plate, and a limiting member; the drive gear drives the adjusting gear to rotate, and the drive gear is located in a long groove and extends to the outside of the connecting member; the connecting member has a sliding groove in its length direction, the connecting plate is slidably installed in the sliding groove, and both the drive gear and the adjusting gear are rotatably installed on the connecting plate; the limiting member can restrict the rotation of the drive gear. The limiting component includes a pressing shaft, an intermediate gear, and a limiting gear; the pressing shaft is rotatably mounted on the connecting plate and can move along its axial direction; the intermediate gear and the limiting gear are both fixedly mounted on the pressing shaft, and the driving gear drives the adjusting gear to rotate through the intermediate gear; the connecting component is provided with a limiting through groove, which is arranged along the length direction of the connecting component, and multiple gear grooves are provided on both sides of the limiting through groove in the width direction; the limiting gear cooperates with the gear grooves, and the pressing shaft extends to the outside of the connecting component through the limiting through groove.

2. The high-position traction external orthotic device according to claim 1, characterized in that, The end of the connector away from the external bow is mounted on the head cap via an adjusting plate; one end of the adjusting plate is mounted on the head cap, and the adjusting plate has multiple adjusting holes along its length; the end of the connector away from the external bow is provided with an adjusting head, which cooperates with the adjusting holes, and the multiple adjusting holes are evenly distributed, and there are two adjusting heads.

3. The high-position traction external orthotic device according to claim 2, characterized in that, The headgear is provided with an arc-shaped groove, and a slider is slidably installed in the arc-shaped groove. The end of the adjustment plate near the headgear is fixedly connected to the slider.

4. The high-position traction external orifice correction device according to claim 3, characterized in that, A rubber pad is fitted on the outside of the slider, and the slider is slidably installed in the arc-shaped groove through the rubber pad.

5. A high-position traction external orthotic device according to claim 1, characterized in that, The end of the external bow furthest from the connector is attached to the dental brace via a resin block.

6. The high-position traction external orthotic device according to claim 1, characterized in that, The end of the extraoral bow away from the connector is mounted on the upper dental brace and located between the lateral incisor and canine.

7. The high-position traction external orthotic device according to claim 1, characterized in that, It also includes a lower dental brace, which fits into the lower teeth.

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