Orthodontic traction device

Abstract

The invention relates to the technical field of orthodontics, and discloses an orthodontic traction device which comprises a base (1) fixed on teeth or gum, and further comprises a support rod (2), an adjusting seat (3), a spring (4) and a traction seat (5) are sequentially mounted on the support rod (2), the adjusting seat (3) is mounted on the support rod (2) through a buckle, and the traction seat (4) is fixedly connected with the teeth to be corrected and applies traction force to the teeth to be corrected. Through multi-dimensional mechanical cooperative control, accurate force application in the vertical direction, the horizontal direction and the rotating direction is achieved; a pushing spring which is continuous, stable and not easy to attenuate is used for applying force, and a rubber chain or an elastic thread which is not easy to attenuate is used; the design of the adjusting seat is matched with the use of the adjusting groove, so that the clinical operation can be simplified, the force value can be adjusted, the precision and the efficiency are improved, and the periodontal membrane injury is reduced; the distributed anchorage design disperses stress, reduces the risk of single-point failure, and reduces the probability of loosening of the implant.

Description

Technical Field

[0001] The invention relates to the technical field of tooth correction, and in particular to an orthodontic traction device. Background Art

[0002] Orthodontic traction of impacted teeth (especially low-positioned impacted teeth) and retained permanent teeth is a complex problem in the field of orthodontics. The core challenge is how to achieve three-dimensional movement of teeth in complex anatomical structures (such as adjacent neurovascular bundles and uneven bone density) while avoiding complications such as root resorption, bone cracking, and damage to adjacent teeth.

[0003] The traditional approach is to bond orthodontic brackets to the exposed crowns of impacted teeth, and use elastic chains or archwires to connect the teeth that need to be pulled with adjacent teeth or lingual arches, TPA and other anchorage devices, and apply continuous light force. This approach relies on adjacent teeth for anchorage, which can easily lead to tilting or loosening of the anchorage teeth. The elastic chain force decays quickly (about 20% decay per week), and needs to be replaced frequently. The efficiency of pulling deep impacted teeth (such as mandibular second molars) is low. With the increasing application of micro-implant anchorage nails in the field of orthodontics, anchorage nails are implanted in the jaws (such as the zygomatic alveolar ridge and mandibular ascending ramus) as absolute anchorage points, and elastic devices are used to pull impacted teeth. However, for impacted teeth that are too poorly positioned, it is difficult to find a suitable anchorage nail implantation site to ensure that the direction of the traction force is accurate and reasonable. Therefore, the anchorage nails can only be passively ligated and fixed to the adjacent teeth, and then the adjacent teeth are used to apply force to the affected teeth, making the traction device more complicated and less comfortable. In recent years, new types of magnetic traction devices have been developed, but the magnetic field strength of the magnetic device decays with distance, and the three-dimensional direction control accuracy is low, so the practical application range is narrow. Summary of the invention

[0004] The present invention aims at solving the shortcomings of the prior art and provides an orthodontic traction device.

[0005] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0006] An orthodontic traction device includes a base fixed on the teeth or gums, and also includes a support rod, one end of the support rod is a connecting end and is movably connected to the base, the other end of the support rod is a free end and extends outward in the direction away from the gums, and an adjustment seat, a spring and a traction seat are installed on the support rod in sequence from the connecting end to the free end, the adjustment seat is installed on the support rod by a buckle, one end of the spring is connected to the adjustment seat, and the other end of the spring is connected to the traction seat and provides an outward force to the traction seat, the traction seat is fixedly connected to the tooth to be corrected and applies traction force in an appropriate direction to it, thereby pulling out the tooth embedded in the gums along a specific direction.

[0007] Preferably, the base includes a fixed block and a base rod connected to the fixed block, the fixed block is fixed on the teeth or gums, the angle between the base rod and the horizontal plane is 0°~50°, and the angle of the base rod can be adjusted according to the condition of the patient's gums; the connecting end of the support rod is hinged to the base rod through a ball joint or a hinge.

[0008] Preferably, the fixing blocks are two fixing nails, and the two ends of the base rod are respectively fixedly connected to the two fixing blocks. The fixing blocks are provided with a threaded structure and are driven into the gums for fixing.

[0009] Preferably, the fixing block is a titanium plate fixed on the gums or teeth.

[0010] Preferably, it also includes a snap-on seat, which wraps around and snaps onto the connecting end of the support rod. A fixing screw is installed on the snap-on seat and cooperates with the connecting end of the support rod. When the angle of the support rod is adjusted by a ball joint or a hinge, the snap-on seat is snapped onto the connecting end of the support rod and the support rod is further fixed by the fixing screw to prevent it from rotating.

[0011] Preferably, the support rod is provided with a plurality of adjustment grooves arranged along the axial direction of the support rod, the adjustment seat is an annular structure, and an elastic protrusion is provided on the inner wall of the adjustment seat, and the elastic protrusion cooperates with the adjustment groove.

[0012] Preferably, a groove is provided on the inner wall of the adjustment seat, and the elastic protrusion is snapped into the groove. The elastic protrusion is a raised bent spring sheet, and the bottoms of the left and right sides of the adjustment groove are both inclined surfaces, and the elastic protrusion slides in or out of the adjustment groove through the inclined surfaces.

[0013] Preferably, the traction seat is an annular structure, the inner diameter of the traction seat is larger than the diameter of the support rod and can slide up and down along the support rod.

[0014] Preferably, a traction hook is provided on the traction seat, and a traction wire is adhered and fixed to the teeth to be corrected, and the traction wire cooperates with the traction hook.

[0015] Preferably, the free end of the support rod is provided with an arc-shaped protrusion, the diameter of which is larger than the inner diameter of the traction seat. The arc-shaped protrusion can prevent scratches and also prevent the traction seat from detaching from the support rod.

[0016] Due to the adoption of the above technical scheme, the present invention has significant technical effects: the present application realizes precise force application in three directions, namely vertical, horizontal and rotation, through multi-dimensional mechanical coordinated control; uses a continuous, stable and non-attenuating push spring to apply force, rather than an easily attenuated rubber chain or elastic wire; the design of the adjustment seat and the use of the adjustment slot can simplify clinical operations, adjust the force value, improve accuracy and efficiency, and reduce periodontal membrane damage; the distributed support design disperses stress, reduces the risk of single-point failure, and reduces the probability of implant loosening; can be used in conjunction with traction hooks or brackets of different forms; can be used for traction of various types of impacted teeth, or for raising the occlusal plane. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 yes Figure 1 A partial enlarged view of .

[0019] Figure 3 It is a cross-sectional view of the support rod and the adjustment seat of the present invention.

[0020] Figure 4 It is a structural schematic diagram of the support rod of the present invention.

[0021] The names of the parts indicated by the numerical labels in the accompanying drawings are as follows: 1-base, 2-support rod, 3-adjustment seat, 4-spring, 5-traction seat, 6-buckle seat, 11-fixed block, 12-base rod, 21-adjustment slot, 22-arc-shaped protrusion, 31-elastic protrusion, 51-traction hook, 52-traction wire. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] Example 1

[0024] An orthodontic traction device, as shown in the figure, includes a base 1 fixed on the teeth or gums, and also includes a support rod 2, one end of the support rod 2 is a connecting end and is movably connected to the base 1, the other end of the support rod 2 is a free end and extends outwardly away from the gums, and an adjustment seat 3, a spring 4 and a traction seat 5 are sequentially installed on the support rod 2 from the connecting end to the free end. The adjustment seat 3 is installed on the support rod 2 by a buckle, one end of the spring 4 is connected to the adjustment seat 3, and the other end of the spring 4 is connected to the traction seat 5 and provides an outward force to the traction seat 5. The traction seat 4 is fixedly connected to the tooth to be corrected and applies an upward traction force to it, thereby pulling the tooth embedded in the gums outward.

[0025] The base 1 includes a fixed block 11 and a base rod 12 connected to the fixed block 11. The fixed block 11 is fixed on the teeth or gums. The angle between the base rod 12 and the horizontal plane is 25°. The angle of the base rod 12 can be adjusted according to the patient's gum condition. The connecting end of the support rod 2 is hinged to the base rod 12 through a ball joint or a hinge.

[0026] Example 2

[0027] The embodiment 1 is the same as the embodiment 1, except that the fixing block 11 is two fixing nails, the two ends of the base rod 12 are respectively fixedly connected to the two fixing blocks 11, and the fixing blocks 11 are provided with a threaded structure and driven into the gums for fixing.

[0028] According to the treatment and correction situation, the fixing blocks 11 can also be connected to three or more, and the base rod 12 is fixedly connected to the fixing blocks 11 .

[0029] Example 3

[0030] The same as the first embodiment, except that the fixing block 11 is a titanium plate fixed on the gums or teeth.

[0031] Example 4

[0032] It is the same as Example 1, but different in that it also includes a snap-on seat 6, which wraps around and snaps onto the connecting end of the support rod 2. A fixing screw is installed on the snap-on seat 6 and cooperates with the connecting end of the support rod 2. When the angle of the support rod 2 is adjusted by a ball joint or a hinge, the snap-on seat 6 is snapped onto the connecting end of the support rod 2, and the support rod 2 is further fixed by a fixing screw to prevent it from rotating.

[0033] Example 5

[0034] The embodiment 1 is the same as the embodiment 1, except that the support rod 2 is provided with a plurality of adjustment grooves 21 arranged along the axial direction of the support rod 2 , the adjustment seat 3 is an annular structure, and an elastic protrusion 31 is provided on the inner wall of the adjustment seat 3 , and the elastic protrusion 31 cooperates with the adjustment groove 21 .

[0035] The inner wall of the adjustment seat 3 is provided with a groove, and the elastic protrusion 31 is buckled in the groove. The elastic protrusion 31 is a raised bent spring sheet. The groove bottoms on the left and right sides of the adjustment groove 21 are both inclined surfaces, and the elastic protrusion 31 slides into or out of the adjustment groove 21 through the inclined surfaces. When adjustment is required, the adjustment seat 3 is rotated with force to make the elastic protrusion 31 slide out of the adjustment groove 21 through the inclined surfaces, and then the adjustment seat 3 is moved axially along the support rod 2 to a suitable position, and then the adjustment seat 3 is rotated again to make the elastic protrusion 31 slide into the corresponding adjustment groove 21 again for fixing. At this time, the adjustment seat 3 drives the position of the traction seat 5 to be adjusted, thereby playing the role of adjusting the traction force; the spring 4 therein plays the role of buffering, making the entire correction traction process more comfortable.

[0036] Example 6

[0037] The same as the first embodiment, the difference is that the traction seat 5 is an annular structure, the inner diameter of the traction seat 5 is larger than the diameter of the support rod 2 and can slide up and down along the support rod 2.

[0038] A traction hook 51 is provided on the traction seat 5 , and a traction wire 52 is adhered and fixed to the tooth to be corrected, and the traction wire 52 cooperates with the traction hook 51 .

[0039] Example 7

[0040] The embodiment is the same as that in Example 1, except that an arc-shaped protrusion 22 is provided at the free end of the support rod 2, and the diameter of the arc-shaped protrusion 22 is larger than the inner diameter of the traction seat 5. The arc-shaped protrusion 22 can prevent scratches and avoid sharp structures from irritating the mucous membrane, and can also prevent the traction seat 5 from detaching from the support rod 2.

[0041] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the patent of the present invention.

Claims

1. An orthodontic traction device, characterized in that: The invention comprises a base (1) fixed on a tooth or a gum, and a support rod (2), one end of the support rod (2) being a connecting end and being movably connected to the base (1), the other end of the support rod (2) being a free end and extending outwards in a direction away from the gum, an adjustment seat (3), a spring (4) and a traction seat (5) being sequentially mounted on the support rod (2) from the connecting end to the free end, the adjustment seat (3) being mounted on the support rod (2) by means of a buckle, one end of the spring (4) being connected to the adjustment seat (3), the other end of the spring (4) being connected to the traction seat (5) and providing an outward force to the traction seat (5), and the traction seat (4) being fixedly connected to the tooth to be corrected and applying a traction force thereto.

2. An orthodontic traction device according to claim 1, characterized in that: The base (1) comprises a fixing block (11) and a base rod (12) connected to the fixing block (11); the fixing block (11) is fixed on teeth or gums; the angle between the base rod (12) and a horizontal plane is 0° to 50°; and the connecting end of the support rod (2) is hinged to the base rod (12) via a ball joint or a hinge.

3. An orthodontic traction device according to claim 2, characterized in that: The fixing block (11) is a fixing nail, the base rod (12) is fixedly connected to the fixing block (11), and the fixing block (11) is provided with a thread structure and is driven into the gums for fixing.

4. An orthodontic traction device according to claim 2, characterized in that: The fixing block (11) is a titanium plate fixed on the gums or teeth.

5. An orthodontic traction device according to claim 2, characterized in that: It also includes a buckle seat (6), which wraps around and buckles the connecting end of the support rod (2), and a fixing screw is installed on the buckle seat (6) and cooperates with the connecting end of the support rod (2).

6. An orthodontic traction device according to claim 1, characterized in that: The support rod (2) is provided with a plurality of adjustment grooves (21) arranged along the axial direction of the support rod (2); the adjustment seat (3) is an annular structure; an elastic protrusion (31) is provided on the inner wall of the adjustment seat (3); the elastic protrusion (31) cooperates with the adjustment groove (21).

7. An orthodontic traction device according to claim 6, characterized in that: The inner wall of the adjustment seat (3) is provided with a groove, and the elastic protrusion (31) is buckled in the groove. The elastic protrusion (31) is a raised bent spring sheet. The groove bottoms on the left and right sides of the adjustment groove (21) are both inclined surfaces, and the elastic protrusion (31) slides into or out of the adjustment groove (21) through the inclined surfaces.

8. An orthodontic traction device according to claim 1, characterized in that: The traction seat (5) is an annular structure. The inner diameter of the traction seat (5) is larger than the diameter of the support rod (2) and can slide up and down along the support rod (2).

9. An orthodontic traction device according to claim 1 or 8, characterized in that: A traction hook (51) is provided on the traction seat (5), and a traction wire (52) is pasted and fixed on the teeth to be corrected, and the traction wire (52) cooperates with the traction hook (51).

10. An orthodontic traction device according to claim 1, characterized in that: The free end of the support rod (2) is provided with an arc-shaped protrusion (22), and the diameter of the arc-shaped protrusion (22) is larger than the inner diameter of the traction seat (5).

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