Adjustable orthodontic draw hook

Abstract

The utility model discloses an adjustable orthodontic draw hook which comprises a draw hook shell, an arch wire is arranged in the draw hook shell in a penetrating mode, a bracket assembly is arranged on the outer side of the draw hook shell and comprises a bottom plate and a groove body, a plurality of liquid injection holes are formed in the positions, close to the two sides, of the bottom plate, and the inner diameters of the liquid injection holes are gradually increased from front to back. A liquid guide channel is arranged on the back face of the bottom plate and located between every two adjacent liquid injection holes. A hook is movably arranged at the upper end of the towing hook shell, and a translation structure is arranged between the hook and the towing hook shell; a cover plate is hinged to the upper end of the front face of the towing hook shell, the upper end of the cover plate is hinged to the towing hook shell, and a mounting structure is arranged between the lower end of the cover plate and the towing hook shell. According to the utility model, the towing hook is arranged to be detachable, and the hinged cover plate can be easily buckled or opened through a buckle type structure, so that the cover plate can be taken down; after the traction hook is installed on the outer side of the arch wire, the hook can still be finely adjusted, and the hooking position can be conveniently adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of oral orthodontics, in particular to an adjustable orthodontic traction hook. Background Art

[0002] Orthodontics is a medical method that adjusts the coordination between facial bones, teeth, nerves and muscles through treatment, with the goal of stabilizing and beautifying the facial structure. It mainly includes two treatment methods: wearing braces and orthodontic surgery.

[0003] The main function of the traction hook in orthodontics is to use various devices to move the teeth to the target direction. The movement of teeth can only be achieved by thrust, traction and other force methods to achieve the purpose of orthodontics. A traction ring needs to be pulled on the traction hook, that is, a rubber band is hung on it, which is used to tighten the gap between teeth and adjust the occlusion relationship.

[0004] In actual use, the traction hook is generally pressed directly onto the outside of the arch wire by tweezers to fix and hook the rubber ring. However, when disassembling, it can only be directly damaged and removed using special tweezers. Even for the same patient, it cannot be reused, causing waste. In addition, when it is damaged and disassembled, residues may fall into the patient's mouth, and it cannot be ensured that it can be completely removed. There is room for improvement. Utility Model Content

[0005] The utility model aims to solve the technical problem in the prior art that the traction hook can only be damaged and disassembled, which is inconvenient, and provides an adjustable orthodontic traction hook.

[0006] In order to solve the above technical problems, the technical solution provided by the utility model is as follows: an adjustable orthodontic traction hook, comprising a traction hook shell, an arch wire is inserted into the traction hook shell, a bracket assembly is arranged on the outside of the traction hook shell, the bracket assembly comprises a bottom plate and a slot body, a plurality of injection holes are arranged on the bottom plate and near both sides, the inner diameter of the injection holes gradually increases from front to back, and a liquid guide channel is arranged on the back of the bottom plate and between two adjacent injection holes;

[0007] A hook is movably provided at the upper end of the traction hook housing, and a translation structure is provided between the hook and the traction hook housing, the translation structure includes a slide groove with a T-shaped cross section provided at the upper end of the traction hook housing, a threaded rod is slidably provided in the slide groove, a baffle is provided at the lower end of the threaded rod extending to the bottom end of the slide groove, and the upper end of the threaded rod extends out of the slide groove and is fixedly installed with the hook; a locking nut is threadedly connected to the outer side of one end of the threaded rod extending out of the slide groove;

[0008] The traction hook housing is C-shaped, and a cover plate is hingedly provided at the upper end of the front side of the traction hook housing. The upper end of the cover plate is hingedly connected to the traction hook housing, and a mounting structure is provided between the lower end and the traction hook housing.

[0009] Preferably, the slot body includes a front surface and support side plates provided near both ends. Arc-shaped through slots are provided at the front ends of the support side plates, and arch wire sleeves are provided in the through slots.

[0010] Preferably, the mounting structure includes a receiving groove provided at the lower end of the traction hook housing. A circular groove penetrating the traction hook housing is communicated with the lower end of the receiving groove. A support rod is slidably provided in the circular groove. The upper end of the support rod extends into the receiving groove and is provided with a limiting plate. A limiting block is provided below the limiting plate. The lower end of the support rod extends out of the circular groove and is provided with a pressing plate. A spring is provided between the pressing plate and the traction hook housing and outside the support rod. The rear side of the lower end of the cover plate is provided with an insertion plate that can extend into the receiving groove, and an insertion block is provided at the end of the insertion plate.

[0011] Preferably, the cross sections of the limiting block and the insertion block are both triangular and the right-angled sides are opposite to each other.

[0012] Preferably, the lower end of the receiving groove is arc-shaped.

[0013] Preferably, the outer side of the lock nut is serrated.

[0014] Preferably, rubber rings are provided on the inner sides of the traction hook housing and the cover plate.

[0015] The advantages of the present utility model compared with the prior art are as follows:

[0016] 1. The traction hook is set to be detachable. Through the snap-fastening structure, the hinged cover plate can be easily snapped on or opened, and thus removed.

[0017] 2. The traction hook can be placed in the middle of the bracket, increasing the selectable positions during traction.

[0018] 3. After the traction hook is installed outside the arch wire, the hook can still be finely adjusted, facilitating the adjustment of the hooking position. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present utility model.

[0020] Figure 2 is a schematic structural diagram of the bracket assembly of the present utility model.

[0021] Figure 3 is a schematic structural diagram of the bottom plate of the present utility model.

[0022] Figure 4 is a schematic structural diagram of the traction hook housing of the present utility model.

[0023] Figure 5 is a sectional view of the traction hook housing of the present utility model.

[0024] Figure 6 is the present utility modelFigure 5 Enlarged view of part A.

[0025] As shown in the figure: 1. Traction hook housing, 2. Arch wire, 3. Base plate, 4. Groove body, 5. Liquid injection hole, 6. Liquid guiding channel, 7. Support side plate, 8. Arch wire sleeve, 9. Hook, 10. Slide groove, 11. Threaded rod, 12. Baffle plate, 13. Locking nut, 14. Cover plate, 15. Accommodating groove, 16. Round groove, 17. Support rod, 18. Limiting plate, 19. Limiting block, 20. Pressing plate, 21. Spring, 22. Insertion plate, 23. Insertion block, 24. Rubber ring. Specific embodiments

[0026] The following further elaborates on the present utility model in conjunction with the accompanying drawings.

[0027] Embodiment 1, in conjunction with the attached Figures 1-4 , An adjustable orthodontic traction hook, comprising a traction hook housing 1, an arch wire 2 is passed through the traction hook housing 1, a bracket assembly is arranged outside the traction hook housing 1, the bracket assembly includes a base plate 3 and a groove body 4, a plurality of liquid injection holes 5 are arranged on the base plate 3 and near both sides, the inner diameters of the liquid injection holes 5 gradually increase from front to back, and liquid guiding channels 6 are arranged on the back of the base plate 3 and between two adjacent liquid injection holes 5, facilitating the diversion of the glue liquid and assisting the installation of the bracket assembly on the tooth surface;

[0028] The groove body 4 includes support side plates 7 arranged on the front and near both ends, arc-shaped through grooves are arranged at the front ends of the support side plates 7, and arch wire sleeves 8 are arranged in the through grooves for connecting and fixing the arch wire 2.

[0029] In conjunction with the attached Figures 3-5 , A hook 9 is movably arranged at the upper end of the traction hook housing 1, a translation structure is arranged between the hook 9 and the traction hook housing 1, the translation structure includes a slide groove 10 with a T-shaped cross-section arranged at the upper end of the traction hook housing 1, the T-shaped cross-section can accommodate the baffle plate 12 to limit the threaded rod 11, a threaded rod 11 is slidably arranged in the slide groove 10, the lower end of the threaded rod 11 extends to the bottom end of the slide groove 10 and is provided with a baffle plate 12 to prevent the threaded rod 11 from slipping out of the slide groove 10, the upper end of the threaded rod 11 extends out of the slide groove 10 and is fixedly installed with the hook 9; a locking nut 13 is threadedly connected to the outer side of the end of the threaded rod 11 extending out of the slide groove 10, tightening the locking nut 13 can cooperate with the baffle plate 12 and the upper surface of the traction hook housing 1 to limit the threaded rod 11 by friction to prevent it from moving, and the outer side of the locking nut 13 is serrated, so that it is not easy to slip when using tweezers to rotate the locking nut 13.

[0030] In conjunction with the attached Figures 3-6The traction hook housing 1 is C-shaped, and a cover plate 14 is hingedly provided at the upper end of the front side of the traction hook housing 1. The upper end of the cover plate 14 is hinged to the traction hook housing 1, and a mounting structure is provided between the lower end and the traction hook housing 1. The traction hook housing 1 and the cover plate 14 together form a ring; the mounting structure includes a receiving groove 15 provided at the lower end of the traction hook housing 1, and the lower end of the receiving groove 15 is connected to a circular groove 16 that penetrates the traction hook housing 1; a support rod 17 is slidably provided in the circular groove 16, and a limit plate 18 is provided at the upper end of the support rod 17 extending into the receiving groove 15, and a limit block 19 is provided under the limit plate 18; a pressure plate 20 is provided at the lower end of the support rod 17 extending out of the circular groove 16, and a spring 21 is provided between the pressure plate 20 and the traction hook housing 1 and located on the outside of the support rod 17; the cover plate A plug plate 22 capable of extending into the receiving groove 15 is provided at the rear side of the lower end of 14, and an insert block 23 is provided at the end of the plug plate 22; when installing the traction hook housing 1, the arch wire 2 that has been tightened between the bracket components is placed between the traction hook housing 1 and the cover plate 14, and then the cover plate 14 is covered. At this time, the plug plate 22 and the insert block 23 are inserted into the receiving groove 15, and the insert block 23 and the limit block 19 are locked and restricted with each other to form a limit. At the same time, the rubber ring 24 squeezes the arch wire 2 and squeezes it tightly in the traction hook housing 1, so that the later traction is more stable; the cross-sections of the limit block 19 and the insert block 23 are both triangular and the right-angled sides are opposite, which is convenient for mutual restriction; the lower end of the receiving groove 15 is arc-shaped, so that when the plug plate 22 is inserted, the arc can provide it with a moving path and space.

[0031] Combined with Figures 3-6 The inner sides of the traction hook housing 1 and the cover plate 14 are both provided with rubber rings 24, which can increase the friction and extrusion force between the arch wire 2 and ensure a firm installation.

[0032] The working principle of the utility model is as follows: the traction hook housing 1 can be installed separately on the outside of the arch wire 2, and can also be installed inside the bracket assembly, providing more position options for the traction rubber ring; first, when installing the bracket assembly, the bracket bonding liquid such as resin glue is guided to the back of the bottom plate 3 through the injection hole 5 and the liquid guide channel 6, and adhered to the tooth surface; when installing the traction hook housing 1, the arch wire 2 that has been tightened between the bracket assemblies is placed between the traction hook housing 1 and the cover plate 14, and then the cover plate 14 is covered, at this time, the plug plate 22 and the plug block 23 are inserted into the accommodating groove 15, and the plug block 23 and the limit block 19 are locked and restricted with each other to form a limit, and at the same time, the rubber ring 24 squeezes the arch wire 2 and squeezes it tightly in the traction hook housing 1, so that the later traction is more stable; when disassembling, the pressing plate 21 is pressed down, the spring 21 is compressed, and the limit plate 18 and the limit block 19 are driven to move upward, thereby releasing the restriction on the plug plate 22 and the plug block 23, so that they can be disengaged, so that the cover plate 14 can be opened.

[0033] The above description is made on the present utility model and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and without departing from the gist of the creation of the present utility model, they design similar structural modes and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present utility model.

Claims

1. An adjustable orthodontic traction hook, characterized in that: The invention comprises a traction hook housing (1), wherein an arch wire (2) is inserted into the traction hook housing (1), and a bracket assembly is arranged on the outside of the traction hook housing (1), wherein the bracket assembly comprises a bottom plate (3) and a slot body (4), wherein a plurality of liquid injection holes (5) are arranged on the bottom plate (3) and near both sides, wherein the inner diameter of the liquid injection holes (5) gradually increases from the front to the back, and a liquid guide channel (6) is arranged on the back of the bottom plate (3) and between two adjacent liquid injection holes (5); A hook (9) is movably provided at the upper end of the traction hook housing (1), and a translation structure is provided between the hook (9) and the traction hook housing (1), wherein the translation structure comprises a slide groove (10) with a T-shaped cross section provided at the upper end of the traction hook housing (1), a threaded rod (11) is slidably provided in the slide groove (10), a baffle (12) is provided at the lower end of the threaded rod (11) extending to the bottom end of the slide groove (10), and the upper end of the threaded rod (11) extends out of the slide groove (10) and is fixedly installed with the hook (9); a locking nut (13) is threadedly connected to the outer side of one end of the threaded rod (11) extending out of the slide groove (10); The traction hook housing (1) is C-shaped, and a cover plate (14) is hingedly provided at the upper end of the front face of the traction hook housing (1). The upper end of the cover plate (14) is hingedly connected to the traction hook housing (1), and a mounting structure is provided between the lower end and the traction hook housing (1).

2. The adjustable orthodontic traction hook according to claim 1, characterized in that: The slot body (4) comprises supporting side plates (7) provided on the front side and close to both ends, and the front ends of the supporting side plates (7) are each provided with an arc-shaped through slot, and the through slots are each provided with an archwire sleeve (8).

3. The adjustable orthodontic traction hook according to claim 1, characterized in that: The mounting structure comprises a receiving groove (15) provided at the lower end of the traction hook housing (1), the lower end of the receiving groove (15) being connected to a circular groove (16) penetrating the traction hook housing (1); a support rod (17) being slidably provided in the circular groove (16), the upper end of the support rod (17) extending into the receiving groove (15) being provided with a limit plate (18), and a limit block (19) being provided below the limit plate (18); a pressure plate (20) being provided at the lower end of the support rod (17) extending out of the circular groove (16), a spring (21) being provided between the pressure plate (20) and the traction hook housing (1) and located outside the support rod (17); a plug plate (22) capable of extending into the receiving groove (15) being provided at the rear side of the lower end of the cover plate (14), and a plug block (23) being provided at the end of the plug plate (22).

4. The adjustable orthodontic traction hook according to claim 3, characterized in that: The cross sections of the limiting block (19) and the inserting block (23) are both triangular and their right-angled sides are opposite.

5. The adjustable orthodontic traction hook according to claim 3, characterized in that: The lower end of the accommodating groove (15) is arc-shaped.

6. The adjustable orthodontic traction hook according to claim 1, characterized in that: The outer side of the locking nut (13) is sawtooth-shaped.

7. The adjustable orthodontic traction hook according to claim 1, characterized in that: The inner sides of the towing hook housing (1) and the cover plate (14) are both provided with rubber rings (24).

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