Orthodontic bracket with adjustable archwire slot

Abstract

The utility model discloses an orthodontic bracket with an adjustable archwire slot, which comprises a bracket body, a sliding cover and an elastic locking rod; the bracket body is provided with an archwire slot; the bracket body on one side of the archwire slot is provided with a plurality of vertical pipe slots; the sliding cover is slidably connected to the top of the bracket body, the bottom of the sliding cover is provided with an adjustment limit slot corresponding to the number of vertical pipe slots, and the lower part of the sliding cover is provided with a limit portion for adjusting the size of the archwire slot; the elastic locking rod is installed in the vertical pipe slot, and its top protrudes outside the vertical pipe slot and is located in the adjustment limit slot. The utility model is provided with a plurality of pipe slots for placing the elastic locking rod on the bracket body, and an adjustment limit slot and a limit portion cooperating with the elastic locking rod are provided on the sliding cover, so that a plurality of adjustment gears can be set according to the shape and size of different archwires, and the sliding cover is slid to change the size of the archwire slot through the limit portion, thereby squeezing and fixing the archwire.

Description

Technical Field

[0001] The utility model relates to the field of dental correction equipment, in particular to an orthodontic bracket with an adjustable archwire slot. Background Art

[0002] Orthodontic brackets are important components of fixed correction technology. The archwire applies various types of corrective forces to the teeth through the orthodontic brackets. The main function of the orthodontic bracket is to fix the archwire so that the archwire can play a better role and transmit the corrective force, thereby controlling the three-dimensional movement of the teeth and achieving the purpose of orthodontic correction.

[0003] Due to the small size of the bracket, it is difficult for orthodontists to apply ligature wires. Self-ligating brackets have been developed that retain the archwire in the archwire slot of the bracket by means of movement such as a latch or a cover, thereby eliminating the need for ligature wires.

[0004] Chinese Patent 202121686874.9 discloses a self-locking structure for an orthodontic bracket and an orthodontic bracket, the orthodontic bracket comprising a bracket body, the bracket body being provided with an archwire slot, the self-locking structure comprising a self-locking slot at the top of the bracket body, a locking plate slidably connected to the self-locking slot, and an X-shaped elastic locking member arranged in the self-locking slot and cooperating with the locking plate for self-locking. When using the self-locking structure, the archwire is placed in the archwire slot, and then the locking plate is slid into the locking position of the self-locking slot to keep the archwire in the archwire slot.

[0005] During the orthodontic process, the shape and size of the archwire will change with the specific situation of the orthodontic treatment. At the beginning of the correction, an archwire with a diameter of about 0.3mm and a circular cross-section will generally be used. The size of the archwire will then be increased, and in the end, an archwire with a cross-section of about 0.45mm and a square may be used. In the prior art, as in the above-mentioned patented technology, the archwire slot can only be locked, and the size of the archwire slot cannot be changed. The archwire can only be tied and fixed on a single orthodontic bracket by passing another thin wire through the archwire slot. The operation process is complicated, and each subsequent adjustment of the archwire requires the thin wire to be removed and re-tied and fixed. Utility Model Content

[0006] The purpose of the utility model is to provide an orthodontic bracket which can change and adjust the size of the archwire slot, does not need external objects to fix the archwire, and is more convenient to use.

[0007] The purpose of the utility model is to achieve the following technical solution: an orthodontic bracket with an adjustable archwire slot, which comprises:

[0008] A bracket body, wherein the bracket body is provided with an archwire slot; a plurality of vertical tube slots are provided on the bracket body on one side of the archwire slot;

[0009] The sliding cover is slidably connected to the top of the bracket body, the bottom of the sliding cover is provided with an adjustment limit slot corresponding to the number of the vertical tube slots, and the lower part of the sliding cover is provided with a limit portion for adjusting the size of the archwire slot; each adjustment limit slot is composed of an unlocking slot, a connecting slot and an adjustment slot, the unlocking slot is connected to the adjustment slot through the connecting slot, and the movable sizes of the adjustment slots in different adjustment limit slots are different;

[0010] The elastic locking rod is installed in the vertical pipe groove, and the top of the elastic locking rod protrudes out of the vertical pipe groove and is located in the adjustment limit groove;

[0011] When the top of the elastic locking rod is located in the unlocking slot, the sliding cover is unlocked from the bracket body; when the top of the elastic locking rod is located in the adjusting slot, the sliding cover is locked with the bracket body, and the limiting part enters the archwire slot through different adjusting slots to squeeze the archwire in the archwire slot.

[0012] Preferably, three vertical pipe grooves and three adjustable limit grooves are provided respectively, and the adjustable limit grooves are arranged in parallel.

[0013] Preferably, the bracket body is provided with a slide groove, the slide cover is connected to the slide groove, and the archwire groove is communicated with the slide groove.

[0014] Preferably, guide plates are arranged on both sides of the slide groove, and the vertical pipe groove is opened on the bottom surface of the slide groove; the limiting part is arranged in the slide groove, and the bottom surface of the sliding cover contacts the guide plates.

[0015] Preferably, the cross-section of the limiting portion is trapezoidal.

[0016] Preferably, the three adjustment limit grooves are respectively a locking groove located in the middle position, a first limit groove and a second limit groove located on both sides of the locking groove, wherein the movable dimension of the adjustment groove in the locking groove is larger than the movable dimension of the adjustment groove in the first limit groove, the movable dimension of the adjustment groove in the first limit groove is larger than the movable dimension of the adjustment groove in the second limit groove, the movable dimension of the unlocking groove in the locking groove is smaller than the movable dimension of the unlocking groove in the first limit groove, and the movable dimension of the unlocking groove in the first limit groove is smaller than the movable dimension of the unlocking groove in the second limit groove.

[0017] Preferably, the lateral widths of the unlocking groove and the adjusting groove are greater than the lateral width of the connecting groove.

[0018] Preferably, a lock opening is also provided on the top of the bracket body.

[0019] Preferably, the elastic locking rod is a columnar structure or a tubular structure, and the elastic locking rod is made of nickel-titanium alloy.

[0020] Preferably, the unlocking groove and the adjusting groove are eccentrically arranged, and the connection between the unlocking groove and the adjusting groove and the connecting groove adopts an arc surface or a slope structure.

[0021] Compared with the prior art, the present invention has at least the following obvious advantages and effects:

[0022] 1. The utility model provides a plurality of tube grooves for placing elastic locking rods on the bracket body, and provides a limit groove and a limit part for adjusting the elastic locking rod on the sliding cover. It can set a plurality of adjustment gears according to the shapes and sizes of different arch wires, slide the sliding cover, and change the size of the arch wire groove through the limit part, so as to squeeze and fix the arch wire.

[0023] 2. The utility model provides a structure on the bracket body that can adjust the size of the archwire slot, which does not require external objects for fixing. The product structure is simple, stable and reliable. Compared with the prior art, the use process is simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the overall structure diagram of the utility model;

[0025] Figure 2 It is an exploded view of the utility model;

[0026] Figure 3 It is a structural diagram of the utility model after unlocking;

[0027] Figure 4 It is a structural schematic diagram of the bracket body in the utility model;

[0028] Figure 5 It is a structural schematic diagram of the sliding cover in the utility model;

[0029] Figure 6 This is a bottom view of the structure of the sliding cover in the utility model;

[0030] Figure 7 It is a side view of the utility model in a locked state;

[0031] Figure 8 It is a side view of the utility model in the first limiting state;

[0032] Fig. 9 It is a side view of the second limiting state of the utility model.

[0033] List of parts in this utility model

[0034] 1. Bracket body; 2. Slide cover; 3-elastic locking rod; 4-adjusting limit slot; 5. Limiting part; 6. Locking slot; 7. First limit slot; 8. Second limit slot; 11-arch wire slot; 12-vertical tube slot; 13-slide slot; 14-guide plate; 15. Bottom plate; 16. Unlocking port; 41. Unlocking slot; 42. Connecting slot; 43. Adjusting slot; DETAILED DESCRIPTION

[0035] Specific embodiments of the present invention are described in conjunction with the accompanying drawings and the following description to teach those skilled in the art how to make and use the best mode of the present invention. In order to teach the principles of the utility model, some conventional aspects have been simplified or omitted. Those skilled in the art should understand that variations from these embodiments fall within the scope of the present invention. Those skilled in the art should understand that the following features can be combined in various ways to form multiple variations of the present invention. Terms such as "upper", "lower", "left", "right", "middle" and "one" cited in the present invention are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships, without substantial changes in the technical content, should also be regarded as the scope of the implementation of the present invention. Therefore, the present invention is not limited to the following specific embodiments, but is only limited by the claims and their equivalents.

[0036] Figures 1 to 6 As shown, this embodiment relates to an orthodontic bracket with an adjustable archwire slot, which includes

[0037] The bracket body 1 is provided with an archwire slot 11 ; and three vertical tube slots 12 are provided on the bracket body 1 on one side of the archwire slot 11 .

[0038] The sliding cover 2 is slidably connected to the top of the bracket body 1. The bottom of the sliding cover 2 is provided with adjustment limit slots 4 corresponding to the number of vertical tube slots 12. The lower part of the sliding cover 2 is provided with a limit portion 5 for adjusting the size of the archwire slot 11. There are three adjustment limit slots 4 in the present application, and each adjustment limit slot 4 is composed of an unlocking slot 41, a connecting slot 42 and an adjusting slot 43. The unlocking slot 41 is connected to the adjusting slot 43 through the connecting slot 42, and the movable sizes of the adjusting slots 43 in the three adjustment limit slots 4 are different.

[0039] The elastic locking rod 3 is also installed in each vertical tube groove 12 in the present application. The top of the elastic locking rod 3 protrudes out of the vertical tube groove 12 and is located in the adjustment limit groove 4. When the sliding cover 2 slides, the top of the elastic locking rod 3 moves in the adjustment limit groove 4.

[0040] When the top of the elastic locking rod 3 is located in the unlocking slot 41, the sliding cover 2 is at the rightmost side of the bracket body 1, the sliding cover 2 and the bracket body 1 are unlocked, and the archwire slot 11 is in an open state; when the top of the elastic locking rod 3 is located in the adjusting slot 43, the sliding cover 2 is locked with the bracket body 1, and the archwire slot 11 is in a closed state. Since the limiting ranges of the three adjusting slots 43 are different, the limiting part 5 can enter the archwire slot 11 through different adjusting slots 43 to squeeze and fix the archwire in the archwire slot 11.

[0041] In the embodiment of the present application, a slide groove 13 is provided on the bracket body 1, the slide cover 2 is connected to the slide groove 13, and the archwire slot 11 is connected to the slide groove 13. Guide plates 14 are provided on both sides of the slide groove 13, and the vertical pipe groove 12 is provided on the bottom surface of the slide groove 13; the limit portion 5 is provided in the slide groove 13, and the bottom surface of the slide cover 2 contacts the guide plate 14. In addition, in the present application, the cross section of the limit portion 5 is a trapezoidal structure with a narrow upper part and a wide lower part, and the slide groove 13 matched therewith is a trapezoidal structure with a wide upper part and a narrow lower part. The adoption of this structure can prevent the slide cover 2 from falling out in the vertical direction on the one hand, and on the other hand, the structure is more compact, preventing the slide cover from sliding by itself.

[0042] In the embodiments of the present application, the three adjustment limit slots 4 are respectively a locking slot 6 located in the middle position, a first limit slot 7 and a second limit slot 8 located on both sides of the locking slot 6, wherein the movable size of the adjustment slot 43 in the locking slot 6 is greater than the movable size of the adjustment slot 43 in the first limit slot 7, the movable size of the adjustment slot 43 in the first limit slot 7 is greater than the movable size of the adjustment slot 43 in the second limit slot 8, the movable size of the unlocking slot 41 in the locking slot 6 is smaller than the movable size of the unlocking slot 41 in the first limit slot 7, and the movable size of the unlocking slot 41 in the first limit slot 7 is smaller than the movable size of the unlocking slot 41 in the second limit slot 8. In the present application, since the sizes of the three adjustment slots 43 are different, when the sliding cover 2 slides to the left, the elastic locking rod 3 located in the middle first enters the adjustment slot 43 of the locking slot 6, while the elastic locking rods 3 on both sides are still in the connecting slots 42 of the first limit slot 7 and the second limit slot 8. At this time, the sliding cover 2 is locked with the bracket body 1, and the archwire slot 11 is closed. Figure 7 As shown; the slide cover 2 continues to slide to the left, the elastic locking rod 3 corresponding to the first limiting groove 7 enters the adjustment groove 43 of the first limiting groove 7, and the top of the elastic locking rod 3 corresponding to the second limiting groove 8 is still in the corresponding connecting groove 42, at this time, the limiting portion 5 at the lower part of the slide cover 2 has entered the archwire groove 11, as shown Figure 8 As shown; the slide cover 2 slides to the left again, the elastic locking rod 3 corresponding to the second limiting groove 8 enters the adjustment groove 43 of the second limiting groove 7, and the limiting portion 5 at the lower portion of the slide cover 2 moves to the leftmost position, such as Fig. 9 Through the above method, the sliding cover 2 can squeeze and fix the arch wire, and arch wires of different sizes can be fixed through different adjustment gears.

[0043] In addition, the lateral width of the unlocking groove 41 and the adjusting groove 43 is greater than the lateral width of the connecting groove 42, and the diameter of the elastic locking rod 3 is greater than the lateral width of the connecting groove 42 and smaller than the lateral width of the unlocking groove 41 and the adjusting groove 43, which mainly serves to limit the elastic locking rod 3. When the sliding cover 2 is slid, an external force must be applied to squeeze the top of the elastic locking rod 3 through the connecting groove 42. The elastic locking rod 3 is a columnar structure, and the elastic locking rod 3 is made of nickel-titanium alloy, so that it has a certain toughness.

[0044] In addition, to facilitate the opening and closing of the sliding cover 2, the top of the bracket body 1 is also provided with an unlocking port 16, and the bottom of the bracket body 1 is provided with a bottom plate 15. The unlocking slot 41 and the adjusting slot 43 are eccentrically arranged to better limit the position, and the connection between the unlocking slot 41 and the adjusting slot 43 and the connecting slot 42 adopts an arc surface structure, which can make the elastic locking rod 3 better squeezed.

[0045] The working principle of the utility model is:

[0046] During production and assembly, the sliding cover 2 is first installed into the bracket body 1, the unlocking groove 41 at the bottom of the sliding cover 2 is aligned with the vertical tube groove 11 of the bracket body 1, the elastic locking rod 3 is placed into the vertical tube groove 11 from the bottom, and the top of the elastic locking rod 3 enters the unlocking groove 41 of the sliding cover 2, and then the bottom plate 15 is welded to the bottom of the bracket body 1 to close the bottom of the vertical tube groove 11.

[0047] When in use, first put the arch wire into the arch wire slot 11. Initially, the tops of the three elastic locking rods 3 are all in the unlocking slots 41. Push the sliding cover 2 to the left, and the middle elastic locking rod 3 first enters the corresponding adjustment slot 43. According to the thickness, shape and size of the arch wire, the sliding cover 2 can continue to be pushed to the left to squeeze the arch wire through the limiting part 5 under the sliding cover 2.

[0048] Since those skilled in the art can easily think of it, any modification, equivalent substitution, improvement, etc. made within the concept and principle of the utility model should be included in the scope of the claims of the utility model.

Claims

1. An orthodontic bracket with an adjustable archwire slot, characterized in that: It includes A bracket body, wherein the bracket body is provided with an archwire slot; a plurality of vertical tube slots are provided on the bracket body on one side of the archwire slot; The sliding cover is slidably connected to the top of the bracket body, the bottom of the sliding cover is provided with an adjustment limit slot corresponding to the number of the vertical tube slots, and the lower part of the sliding cover is provided with a limit portion for adjusting the size of the archwire slot; each adjustment limit slot is composed of an unlocking slot, a connecting slot and an adjustment slot, the unlocking slot is connected to the adjustment slot through the connecting slot, and the movable size of the adjustment slot in different adjustment limit slots is different; The elastic locking rod is installed in the vertical pipe groove, and the top of the elastic locking rod protrudes out of the vertical pipe groove and is located in the adjustment limit groove; When the top of the elastic locking rod is located in the unlocking slot, the sliding cover is unlocked from the bracket body; when the top of the elastic locking rod is located in the adjusting slot, the sliding cover is locked with the bracket body, and the limiting part enters the archwire slot through different adjusting slots to squeeze the archwire in the archwire slot.

2. The orthodontic bracket with adjustable archwire slot according to claim 1, characterized in that: The vertical pipe grooves and the regulating limit grooves are respectively provided in three numbers, and the regulating limit grooves are arranged in parallel.

3. The orthodontic bracket with adjustable archwire slot according to claim 1, characterized in that: The bracket body is provided with a slide groove, the slide cover is connected to the slide groove, and the archwire groove is communicated with the slide groove.

4. The orthodontic bracket with adjustable archwire slot according to claim 3, characterized in that: Guide plates are arranged on both sides of the slide groove, and the vertical pipe groove is opened on the bottom surface of the slide groove; the limiting part is arranged in the slide groove, and the bottom surface of the sliding cover contacts the guide plates.

5. The orthodontic bracket with adjustable archwire slot according to claim 1, characterized in that: The cross section of the limiting portion is trapezoidal.

6. The orthodontic bracket with adjustable archwire slot according to claim 2, characterized in that: The three adjustment limit grooves are respectively a locking groove located in the middle position, a first limit groove and a second limit groove located on both sides of the locking groove, wherein the movable dimension of the adjustment groove in the locking groove is larger than the movable dimension of the adjustment groove in the first limit groove, the movable dimension of the adjustment groove in the first limit groove is larger than the movable dimension of the adjustment groove in the second limit groove, the movable dimension of the unlocking groove in the locking groove is smaller than the movable dimension of the unlocking groove in the first limit groove, and the movable dimension of the unlocking groove in the first limit groove is smaller than the movable dimension of the unlocking groove in the second limit groove.

7. The orthodontic bracket with adjustable archwire slot according to claim 1, characterized in that: The lateral widths of the unlocking groove and the adjusting groove are greater than the lateral width of the connecting groove.

8. The orthodontic bracket with adjustable archwire slot according to claim 1, characterized in that: The top of the bracket body is also provided with an unlocking opening.

9. The orthodontic bracket with adjustable archwire slot according to claim 1, characterized in that: The elastic locking rod is a columnar structure or a tubular structure, and is made of nickel-titanium alloy.

10. The orthodontic bracket with adjustable archwire slot according to claim 1, characterized in that: The unlocking groove and the adjusting groove are eccentrically arranged, and the connection between the unlocking groove and the adjusting groove and the connecting groove adopts an arc surface or an inclined surface structure.

Images