Bearing type orthodontic bracket

Abstract

The present invention discloses a bearing-type orthodontic bracket, comprising a bracket body, the bracket body having an archwire groove, the archwire groove comprising an archwire groove bottom, a left side wall of the archwire groove and a right side wall of the archwire groove, arc grooves being respectively provided on the left side wall and the right side wall of the archwire groove, a bearing mechanism being provided in each arc groove, the bearing mechanism comprising a bearing, a bearing sleeve, a bearing limit groove and a bearing force applying mechanism. The bearing force applying mechanism comprises a spring piece, which acts on the bearing. The bearing sleeve rotates around the bearing. The bearing-type orthodontic bracket of the present invention can not only reduce the friction between the archwire and the archwire groove wall, but also change the moving direction of the archwire by sliding the bearing, thereby cleverly achieving a variety of treatment effects in different cases.

Description

Technical Field

[0001] The invention belongs to the field of medical devices for orthodontics, and in particular relates to a bearing-type orthodontic bracket. Background Art

[0002] Archwire correction is the most commonly used method in orthodontic treatment. Most current brackets, whether self-ligating or conventional, have solid archwire grooves on both sides. If the archwire contacts these two walls, significant friction occurs. In some treatments where reduced friction is required, brackets with this structure often fail to achieve optimal treatment results, significantly prolonging treatment. Summary of the Invention

[0003] To address the problems of the prior art, the present invention provides an orthodontic bracket with bearing structures on both sides of the archwire slot. This bracket structure, because the portion of the archwire in contact with the archwire slot walls has a bearing structure that allows for integral movement and self-rotation, not only reduces friction between the archwire and the slot walls but also allows the movement of the bearing within the bearing stop groove to change the direction of the archwire's movement, cleverly achieving a variety of therapeutic effects in different cases.

[0004] The technical solution adopted by the present invention is as follows: a bearing-type orthodontic bracket, comprising a bracket body, the bracket body having an archwire groove, the archwire groove comprising an archwire groove bottom, a left side wall of the archwire groove, and a right side wall of the archwire groove, the left side wall and the right side wall of the archwire groove are respectively provided with an arc groove, each arc groove is provided with a bearing mechanism, the bearing mechanism comprising a bearing, a bearing sleeve, a bearing limit groove and a bearing force applying mechanism:

[0005] The arcuate slot is formed on the left side wall of the archwire slot at both ends or at either end thereof along the direction of the archwire slot; and is also formed on the right side wall of the archwire slot at both ends or at either end thereof along the direction of the archwire slot; each of the above-mentioned arcuate slots has an arcuate slot bottom, an upper fan-shaped side wall, and a lower fan-shaped side wall; the lower fan-shaped side wall is located on the same horizontal plane as the archwire slot bottom; and the upper fan-shaped side wall is located below the working wing;

[0006] The bearing limiting groove is arranged on the surface of the lower fan-shaped side wall and is arc-shaped; the arc line of the bearing limiting groove and the arc line where the bottom of the arc groove is located have the same center, but the arc radius of the bearing limiting groove is slightly smaller than the arc radius where the bottom of the arc groove is located;

[0007] The bearing is arranged between the upper and lower fan-shaped side walls of the arc-shaped groove, and the lower end of the bearing is embedded in the bearing limit groove; a bearing sleeve is also arranged on the periphery of the bearing, and the bearing sleeve rotates around the bearing;

[0008] The bearing force applying mechanism includes a spring piece, and the spring piece acts on the bearing.

[0009] In a bearing-type orthodontic bracket of the present invention, the spring piece of the bearing force-applying mechanism is an L-shaped spring piece, and two spring piece slots are provided on the bottom of the arc-shaped slot, and the two ends of the L-shaped spring piece are respectively fixed in the two spring piece slots.

[0010] The present invention provides a bearing-type orthodontic bracket, wherein the spring piece of the bearing force-applying mechanism is arc-shaped with an annular ring at one end, the annular ring is sleeved on the bearing, the arc-shaped portion of the spring piece is arranged in the spring piece slot, and the spring piece slot is arranged in the bottom of the arc-shaped slot.

[0011] The bearing-type orthodontic bracket of the present invention is also provided with a bearing limiting groove on the surface of the fan-shaped side wall above the arc groove.

[0012] The present invention has the following beneficial effects: Because a bearing mechanism that can both rotate and move along a bearing limiting groove is provided on the inner wall of the archwire slot of a bearing-type orthodontic bracket of the present invention, when the archwire passes through the archwire slot in a straight line and horizontally, after the archwire moves, except for the middle portion, the archwire contacts the archwire slot wall. At both ends, it contacts the bearing mechanism at both ends of the archwire slot. Due to the self-rotating bearing and the reaction of the spring plate, the friction between the two is less than the friction between the archwire and the slot wall directly, thereby making the movement of the archwire smoother.

[0013] When a straight archwire passes through the archwire slot at a certain angle, the primary force exerted by the wire is on the two diagonal bearings at either end of the slot wall, forcing the bearings along the retaining groove toward the inside of the curved slot. The two bearings at the other diagonal corners only lightly touch. This force application method previously required additional archwires or tools in conventional brackets.

[0014] Furthermore, the structure can also provide a method for passing the archwire in a non-linear shape, that is, in an arc shape, through the archwire groove, and the specific arc direction can be set arbitrarily according to actual needs, thereby achieving different correction purposes, thereby greatly shortening the correction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of embodiment 1 of the present invention;

[0016] Figure 2 yes Figure 1 A top view of

[0017] Figure 3 yes Figure 2 AA cross-sectional view;

[0018] Figure 4 This is a schematic diagram of the structure of Example 1 when no bearing and bearing sleeve are provided;

[0019] Figure 5 yes Figure 4 Right view;

[0020] Figure 6 yes Figure 5 AA cross-section of

[0021] Figure 7 yes Figure 5 BB cross-section diagram;

[0022] Figure 8 is a schematic structural diagram of the L-shaped spring in Example 1;

[0023] Figure 9 It is a schematic diagram of the bearing structure;

[0024] Figure 10 is a schematic diagram of the bearing sleeve structure;

[0025] Figure 11 This is a first usage state diagram of Example 1;

[0026] Figure 12 This is a second usage state diagram of Example 1;

[0027] Figure 13 This is a diagram of the third usage state of Example 1;

[0028] Figure 14 This is the fourth usage state diagram of Example 1;

[0029] Figure 15 This is the fourth usage state diagram of Example 1;

[0030] Figure 16 is a schematic structural diagram of Example 2;

[0031] Figure 17 yes Figure 16 Right view;

[0032] Figure 18 yes Figure 17 AA cross-sectional view;

[0033] Figure 19 yes Figure 17 BB cross-sectional view;

[0034] Figure 20 This is a schematic diagram of the structure of Example 2 when no bearing and bearing sleeve are provided;

[0035] Figure 21 is a schematic diagram of the spring structure in Example 2;

[0036] Figure 22 is a schematic structural diagram of Example 3;

[0037] Figure 23 yes Figure 22 Right view;

[0038] Figure 24 yes Figure 23 AA cross-sectional view;

[0039] Figure 25 yes Figure 23 BB cross-sectional view;

[0040] Figure 26 This is a schematic diagram of the structure of Example 3 when no bearing and bearing sleeve are provided.

[0041] Mesh bottom C, bracket body D, archwire groove 1, archwire groove bottom 2, archwire groove left wall 3, archwire groove right wall 4, arc groove 5, arc groove bottom 6, lower fan-shaped side wall 7, upper fan-shaped side wall 8, bearing 9, bearing sleeve 10, bearing limit groove 11, L-shaped spring clip 12, spring clip slot 13, arc spring clip 14, spring clip slot 15, square wire 16 DETAILED DESCRIPTION

[0042] Example 1

[0043] The bracket in this embodiment adopts a self-locking structure, and the specific self-locking method adopts the structure disclosed in Chinese Patent No. ZL2015103525472. Of course, in actual use, this structure is not limited to the use of the above self-locking structure, and even other non-self-locking ordinary brackets can be used. As long as the bracket has an archwire groove structure, it can be used universally.

[0044] The present embodiment is described in detail below with reference to the accompanying drawings. Figure 1 As shown, a bearing type orthodontic bracket includes a mesh base plate C and a bracket body D. The bracket body D has an archwire groove 1. Figure 2 , Figure 6 and Figure 7 As shown, the archwire slot 1 has an archwire slot bottom 2, an archwire slot left side wall 3 and an archwire slot right side wall 4. Figure 5 , Figure 6 and Figure 7 As shown, the left side wall 3 of the archwire slot is provided with arcuate grooves 5 at both ends along the direction of the archwire slot; at the same time, the right side wall 4 of the archwire slot is also provided with two arcuate grooves 5 at both ends along the direction of the archwire slot. Figure 4 As shown, the arcuate slot 5 has an arcuate slot bottom 6, a lower fan-shaped side wall 7 and an upper fan-shaped side wall 8. The lower fan-shaped side wall 7 and the archwire slot bottom 2 are located on the same plane; the upper fan-shaped side wall is located below the working wing.

[0045] like Figure 1 , Figure 2 and Figure 3 As shown, a bearing mechanism is provided in each arc groove 5, and the bearing mechanism includes a bearing 9, a bearing sleeve 10, a bearing limiting groove 11 and a bearing force applying mechanism. Figure 9 and Figure 10 As shown, a bearing sleeve 10 is also provided on the periphery of the bearing 9, and the bearing sleeve 10 rotates around the bearing 9. Figures 4 to 7 As shown, the bearing limiting groove 11 is arranged on the surface of the lower fan-shaped side wall 7 and is arc-shaped. Figure 6 and Figure 7 As shown, the arc line of the bearing limiting groove 11 and the arc line where the arc groove bottom 6 is located have the same center, but the arc line radius of the bearing limiting groove 11 is slightly smaller than the arc line radius of the arc groove bottom 6.

[0046] like Figure 1 As shown, the bearing 9 is arranged between the lower sector-shaped side wall 7 and the upper sector-shaped side wall 8 of the arc-shaped groove 5. Figure 3 As shown, bearing retaining grooves 11 are provided on both the lower sector-shaped sidewall 7 and the upper sector-shaped sidewall 8 of the arcuate slot 5. Of course, in actual use, bearing retaining grooves 11 may be provided only on the lower sector-shaped sidewall 7. The upper and lower ends of the bearing 9 are respectively embedded in the bearing retaining grooves 11 on the upper sector-shaped sidewall 8 and the lower sector-shaped sidewall 7.

[0047] like Figure 1 As shown, a bearing force applying mechanism is also provided beside the bearing 9, and the bearing force applying mechanism includes an L-shaped spring piece 12 and two spring piece slots 13. The structure of the L-shaped spring piece 12 is as shown in FIG. Figure 8 As shown. Figure 6 As shown, two spring clip grooves 13 are provided on the surface of the arc groove bottom 6 radiating from the midpoint of the central axis of the bearing 9. The two ends of the L-shaped spring clip 12 are respectively clamped in the two spring clip grooves 13.

[0048] like Figure 11 , Figure 12 and Figure 13 As shown, when the square wire acts in a straight line or an oblique line in the archwire slot, the square wire does not contact the outer wall of the archwire slot when moving in the archwire slot, but only generates rolling friction with the bearing sleeve, thereby reducing friction resistance.

[0049] like Figure 14 and Figure 15 As shown, when the square wire does not act in a straight line in the archwire slot, the extrusion force of the square wire acts on the bearing sleeve, causing the bearing to be displaced in the bearing limit slot and exerting force on the spring piece. The spring piece deforms after being subjected to the force, thereby reducing the force generated by the deformation of the square wire.

[0050] Example 2

[0051] The other structures of this embodiment are the same as those of embodiment 1, except that the bearing force applying mechanism provided next to the bearing 9 of this embodiment is different from that of embodiment 1. Figure 21 As shown, the spring piece of the bearing force applying mechanism is an arc-shaped spring piece 14, one end of which is provided with an annular ring, and the annular ring is sleeved on the lower end of the bearing 9. Figure 20 As shown, a spring slot 15 is provided on the bottom surface of the arc-shaped slot bottom 6, and the spring slot 15 is located at the junction of the arc-shaped slot bottom 6 and the lower fan-shaped side wall 7. Figures 17 to 19 As shown, the arc portion of the arc-shaped spring piece 14 is arranged in the spring piece groove 15. Figure 16 As shown, when the square wire acts on the bearing sleeve 10, the bearing 9 is displaced, and the arc-shaped spring piece 14 is deformed. Since the arc-shaped spring piece 14 can stretch in the spring piece groove 15, the force is converted and released, further reducing the force on the square wire.

[0052] Example 3

[0053] The other structures of this embodiment are the same as those of embodiment 1, except that the bearing force applying mechanism provided next to the bearing 9 of this embodiment is different from that of embodiment 1. However, the spring piece of the bearing force applying mechanism of this embodiment is the same as that of embodiment 2, which is also an arc-shaped spring piece 14. One end of the arc-shaped spring piece 14 is also provided with an annular ring. Figure 22 As shown, the annular ring is provided at the middle end of the bearing 9. Figure 26 As shown, a spring slot 15 is provided on the bottom surface of the arc-shaped slot bottom 6, and the spring slot 15 is located in the middle of the arc-shaped slot bottom. Figures 23 to 25 As shown, the arc portion of the arc-shaped spring piece 14 is arranged in the spring piece groove 15. Figure 22 As shown, when the square wire acts on the bearing sleeve 10, the bearing 9 is displaced, and the arc-shaped spring piece 14 is deformed. Since the arc-shaped spring piece 14 can stretch in the spring piece groove 15, the force is converted and released, further reducing the force on the square wire.

Claims

1. A bearing-type orthodontic bracket, comprising a bracket body having an archwire slot, the archwire slot comprising a bottom, a left side wall, and a right side wall, wherein: An arc-shaped groove is respectively provided on the left and right walls of the archwire slot, and a bearing mechanism is provided in each arc-shaped groove, and the bearing mechanism includes a bearing, a bearing sleeve, a bearing limiting groove and a bearing force applying mechanism: the arc-shaped groove is opened on the left wall of the archwire slot at both ends or at any one of the two ends along the direction of the archwire slot; it is also opened on the right wall of the archwire slot at both ends or at any one of the two ends along the direction of the archwire slot; any of the above-mentioned arc-shaped grooves has an arc-shaped groove bottom, an upper fan-shaped side wall and a lower fan-shaped side wall; the lower fan-shaped side wall and the archwire slot bottom are located on the same On the horizontal plane; the upper fan-shaped side wall is located below the working wing; the bearing limit groove is arranged on the surface of the lower fan-shaped side wall and is arc-shaped; the arc line of the bearing limit groove and the arc line where the bottom of the arc groove is located have the same center, but the arc radius of the bearing limit groove is slightly smaller than the arc radius of the bottom of the arc groove; the bearing is arranged between the upper and lower fan-shaped side walls of the arc groove, and the lower end of the bearing is embedded in the bearing limit groove; a bearing sleeve is also provided on the periphery of the bearing, and the bearing sleeve rotates around the bearing; the bearing force applying mechanism includes a spring piece, and the spring piece acts on the bearing.

2. The bearing-type orthodontic bracket according to claim 1, characterized in that: The spring piece of the bearing force applying mechanism is an L-shaped spring piece, and two spring piece clamping grooves are provided on the bottom of the arc-shaped groove, and the two ends of the L-shaped spring piece are respectively fixed in the two spring piece clamping grooves.

3. The bearing-type orthodontic bracket according to claim 1, wherein: The spring piece of the bearing force applying mechanism is arc-shaped with an annular ring at one end, the annular ring is sleeved on the bearing, the arc-shaped part of the spring piece is arranged in the spring piece slot, and the spring piece slot is arranged in the bottom of the arc slot.

4. A bearing-type orthodontic bracket according to any one of claims 1 to 3, characterized in that: A bearing limiting groove is also provided on the surface of the fan-shaped side wall above the arc groove, and the upper end of the corresponding bearing is embedded in the above-mentioned bearing limiting groove.

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