Self-ligating bracket

Abstract

The utility model relates to the technical field of orthodontics, and discloses a self-ligating bracket which comprises a bottom plate, the body part is formed by protruding outwards from the bottom plate, a groove used for containing an arch wire is formed in the body part, a rotating shaft is further inserted into the body part, and a limiting part is formed on the side, close to the rotating shaft, of the groove; the self-locking cover is rotationally connected to the rotating shaft and can lock the groove when rotating, and a first clamping groove and a second clamping groove which are adjacent to each other are formed in the side, facing the limiting part, of the self-locking cover; and when the self-locking cover opens and closes the groove, the limiting part sequentially enters the first clamping groove and the second clamping groove. The entering angle of the arch wire is large when the self-locking cover is opened, a doctor can conveniently take off and take off the arch wire in clinic, the bracket structure is thin in size, common occlusion interference during wearing is prevented, foreign body sensation during wearing is reduced, and the wearing comfort level is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tooth correction, in particular to a self-locking bracket. Background Art

[0002] Self-ligating orthodontic brackets refer to devices made of metal or ceramic materials that are fixed to the surface of teeth with a special adhesive during orthodontic treatment. They are used to hold and fix orthodontic wires and transmit correction force to teeth, thereby achieving the purpose of tooth correction. The existing mainstream self-ligating bracket structures are all sliding cover types, but the upper wing of this sliding cover self-ligating bracket is designed with a slide rail structure, and the size structure of the upper wing is designed to be larger, resulting in frequent occlusal interference when patients wear it, and the bracket is thick, so patients feel a strong foreign body sensation when wearing it, and the comfort is not good; sliding cover self-ligating brackets generally use vertical slots for the front teeth and horizontal slots for the back teeth, which is not conducive to the doctor's clinical operation and inconvenient to remove and put on the archwire; in addition, the sliding cover bracket requires the archwire to enter the groove completely before the locking cover can be closed normally, which is inconvenient for doctors to operate clinically. Utility Model Content

[0003] The purpose of the utility model is to provide a self-ligating bracket, wherein the entry angle of the arch wire is large when the self-ligating cover is opened, which is conducive to the convenience of the doctor to remove the arch wire during clinical practice; the bracket structure is thin in size and structure, which prevents frequent occlusal interference when wearing, reduces the foreign body sensation when wearing, and improves the wearing comfort.

[0004] In order to achieve the above object, the utility model provides a self-locking bracket, comprising

[0005] Base plate;

[0006] A body, the body is formed by protruding outward from the bottom plate, a groove for accommodating an arch wire is formed in the body, a rotating shaft is inserted into the body, and a limiting portion is formed on one side of the groove close to the rotating shaft;

[0007] A self-locking cover, the self-locking cover is rotatably connected to the rotating shaft and can lock the groove when rotating, and the self-locking cover is provided with a first and a second adjacent slot on one side facing the limiting portion;

[0008] Wherein, when the self-locking cover opens and closes the groove, the limiting portion enters the first card slot and the second card slot in sequence.

[0009] Compared with the prior art, the self-ligating bracket of the utility model embodiment has the following beneficial effects: the base plate is fixed to the outer surface of the tooth by an adhesive, a groove for accommodating the arch wire is formed in the body of the base plate, a limiting portion is arranged on one side of the groove, the self-ligating cover is rotatably connected to the body by a rotating shaft, a first clamping groove and a second clamping groove corresponding to the limiting portion are arranged on the side of the self-ligating cover close to the rotating shaft, when the self-ligating cover is in an open state, the limiting portion enters the second clamping groove, at this time the first clamping groove is arranged toward the groove, the self-ligating cover is fixed in a vertically open state, it is convenient for the arch wire to directly and vertically enter the groove, the entry angle of the arch wire when the self-ligating cover is opened is large, it is convenient for doctors to remove the bracket during clinical practice Arch wire; when the self-locking cover needs to lock the groove, the self-locking cover rotates around the rotating shaft, the limiting part leaves the second slot and enters the first slot, the first slot cooperates with the limiting part to lock the groove, so that the arch wire is locked in the groove, and the locking of the self-locking bracket is completed. When the self-locking bracket is locked, the self-locking cover is parallel to the base plate, and the size and structure are thin, which prevents frequent occlusal interference during wearing, reduces the foreign body sensation during wearing, and improves the wearing comfort; and the arch wire can be placed on the self-locking cover during the locking process, and the arch wire will be directly sent into the groove during the rotation of the self-locking cover, which is convenient for the doctor's clinical operation, and there is no need to put the arch wire into the groove as a whole, which simplifies the installation process of the self-locking bracket.

[0010] In the self-locking bracket of the embodiment of the utility model, the limiting portion is configured as a semi-cylindrical shape, and the first clamping groove and the second clamping groove are also configured as arc shapes that match the size of the limiting portion.

[0011] In the self-locking bracket of the embodiment of the utility model, the limiting portion is provided with an arc-shaped recessed portion on one side facing the groove, and the end surface of the self-locking cover on one side close to the first slot is provided as an arc-shaped surface matching the recessed portion.

[0012] The self-locking bracket of the embodiment of the utility model has a self-locking cover groove recessed toward the inner side of the base plate formed on the side of the groove facing away from the limiting portion, and a closing cover is formed at the end of the self-locking cover. When the self-locking cover locks the groove, the closing cover extends into the self-locking cover groove.

[0013] In the self-locking bracket of the embodiment of the utility model, a stopper perpendicular to the bottom plate is arranged on the side of the self-locking cover groove facing away from the groove, and a locking hole is opened on the stopper.

[0014] In the self-locking bracket of the embodiment of the utility model, the closing cover is provided with an unlocking groove, and the unlocking groove is arranged opposite to the unlocking hole when the self-locking cover locks the groove.

[0015] In the self-locking bracket of the embodiment of the utility model, a shaft hole is formed at one end of the body, one end of the shaft extends into the shaft hole, and the other end of the shaft is directly fixed to the body.

[0016] The self-ligating bracket of the embodiment of the utility model can be used for anterior teeth, molars and bicuspids.

[0017] The self-ligating bracket of the embodiment of the utility model, when the self-ligating bracket is used for front teeth, the limiting portion is arranged obliquely above the groove, and the rotating shaft is arranged on the side of the limiting portion facing away from the groove;

[0018] Wherein, when the self-locking cover locks the groove and the limiting portion enters the first locking groove, the second locking groove is arranged toward the groove.

[0019] The self-ligating bracket of the embodiment of the utility model, when the self-ligating bracket is used for front teeth, the self-ligating cover groove is arranged to be inclined upward, and when the self-ligating cover locks the groove, the closing cover extends into the self-ligating cover groove along the inclined direction of the self-ligating cover groove.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a self-ligating bracket arranged at a molar according to an embodiment of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the body and base plate of the self-ligating bracket arranged at the molar in an embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the bottom structure of a self-locking cover of a self-locking bracket arranged at a molar according to an embodiment of the utility model;

[0024] Figure 4 It is a schematic cross-sectional structure diagram of a self-locking cover of a self-locking bracket disposed at a molar according to an embodiment of the utility model when locked;

[0025] Figure 5 It is a schematic cross-sectional structure diagram of a self-locking cover of a self-locking bracket disposed at a molar according to an embodiment of the utility model when it is opened;

[0026] Figure 6 It is a structural schematic diagram of a self-ligating bracket arranged at the front teeth according to an embodiment of the utility model;

[0027] Figure 7 It is a schematic cross-sectional structure diagram of a self-locking cover of a self-locking bracket disposed at a molar according to an embodiment of the utility model when locked;

[0028] Figure 8 It is a schematic cross-sectional structure diagram of a self-locking cover of a self-locking bracket disposed at a molar according to an embodiment of the utility model when locked;

[0029] Fig. 9 It is a structural schematic diagram of a self-ligating bracket provided at a bicuspid according to an embodiment of the utility model;

[0030] In the figure, 1, bottom plate; 2, body; 21, groove; 22, shaft; 23, limit portion; 24, recessed portion; 25, self-locking cover groove; 26, stopper; 27, unlocking hole; 28, shaft hole; 3, self-locking cover; 31, first slot; 32, second slot; 33, arc surface; 34, closing cover; 35, unlocking slot. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] like Figure 1 , Figure 2 and Figure 3As shown, a self-ligating bracket of a preferred embodiment of the utility model comprises a base plate 1, a body 2 and a self-ligating cover 3. The base plate 1 is in the shape of a plate and is fixed to the outer surface of the tooth by an adhesive, and can be used for anterior teeth, molars and bicuspids. The body 2 is formed by protruding outward from the base plate 1, and the body 2 comprises symmetrical block-shaped protruding structures. A groove 21 for accommodating an arch wire is formed between the block-shaped protruding structures, that is, in the body 2. The groove 21 is arranged to penetrate in a direction parallel to the base plate, and is used for the arch wire to pass through the self-ligating bracket on different teeth. The body 2 is also inserted with a rotating shaft 22, and the rotating shaft 22 is also parallel to the base plate 1. The groove 21 is close to the rotating shaft 2. A limiting portion 23 is formed on one side of the self-locking cover 2, and the limiting portion 23 is between the groove 21 and the rotating shaft 22, and is used to fix the self-locking cover 3 at a predetermined position when the self-locking cover 3 rotates; the self-locking cover 3 is used to lock the groove 21 and limit the arch wire in the groove 21. When the self-locking cover 3 opens the groove 21, it can be used for the entry and exit of the arch wire. The self-locking cover 3 is rotatably connected to the rotating shaft 22 and can lock the groove 21 when it is rotated to be parallel to the base plate 1. The self-locking cover 3 is provided with adjacent first and second slots 31 and 32 on one side facing the limiting portion 23. When the self-locking cover 3 opens and closes the groove 21, the limiting portion 23 enters the first and second slots 31 and 32 in sequence.

[0036] like Figure 4 and Figure 5 As shown in the figure, when the self-locking cover 3 is in the open state, the limiting portion 23 enters the second slot 32. At this time, the first slot 31 is set towards the groove 21, and the self-locking cover 3 is fixed in the vertically opened state, which is convenient for the arch wire to directly and vertically enter the groove 21. The entry angle of the arch wire when the self-locking cover 3 is opened is large, which is conducive to the doctor's convenient removal of the arch wire during clinical practice; when the self-locking cover 3 needs to lock the groove 21, the self-locking cover 3 rotates around the rotating shaft 22, and the limiting portion 23 leaves the second slot 32 and enters the first slot 31. The first slot 31 cooperates with the limiting portion 23. The groove 21 is locked by closing, so that the arch wire is locked in the groove 21, and the locking of the self-ligating bracket is completed. When the self-ligating bracket is locked, the self-ligating cover 3 is parallel to the base plate 1, and the size and structure are thin, which prevents the frequent occlusal interference when wearing, reduces the foreign body sensation when wearing, and improves the wearing comfort; and the arch wire can be placed on the self-ligating cover 3 during the locking process. During the rotation of the self-ligating cover 3, the arch wire is directly sent into the groove 21, which is convenient for the doctor's clinical operation. There is no need to put the arch wire into the groove 21 as a whole, which simplifies the installation process of the self-ligating bracket.

[0037] like Figure 2 and Figure 3As shown, in some embodiments of the present invention, the limiting portion 23 is set to a semi-cylindrical shape, and the semi-cylindrical limiting portion 23 protrudes toward the direction of the rotating shaft 22. The first card slot 31 and the second card slot 32 are also set to an arc shape that matches the size of the limiting portion 23. The first card slot 31 and the second card slot 32 set in an arc shape are convenient for entering and rotating out of the cylindrical limiting portion 23. When the limiting portion 23 enters the second card slot 32, the self-locking cover 3 can be fixed in the position of opening the groove 21. Gravity cannot break through the restriction, so that the state of the self-locking cover 3 opening the groove 21 is relatively stable, which is conducive to the placement of the arch wire; when the self-locking cover 3 needs to be rotated, due to the smooth transition between the arc and the cylinder, only a small amount of external force is required to make the limiter leave the second card slot 32 and enter the first card slot 31. After entering the first card slot 31, the self-locking cover 3 is fixed and limited to a state parallel to the bottom plate 1. The self-locking cover 3 cannot be pushed open by the outward force of the arch wire alone, so that the locking of the arch wire by the self-locking cover 3 is sufficiently stable. Further, at least one of the limiter 23 and the self-locking cover 3 is made of soft material, including plastic or rubber.

[0038] like Figure 2 and Figure 3 As shown, in some embodiments of the present invention, a circular arc-shaped recessed portion 24 is provided on the side of the limiting portion 23 facing the groove 21, and the end surface of the self-locking cover 3 on one side close to the first slot 31 is provided as an arc-shaped surface 33 matching the recessed portion 24. The recessed portion 24 and the arc-shaped surface 33 on one side of the first slot 31 are provided so that when the limiting portion 23 enters the first slot 31 and after entering the first slot 31, the end surface on one side of the first slot 31 will not interfere with the body 2, which is conducive to the limiting portion 23 smoothly entering the first slot 31, ensuring the stability of the rotation process and improving the overall life of the device.

[0039] In some embodiments of the utility model, a self-locking cover groove 25 recessed toward the inner side of the base plate 1 is formed on the side of the groove 21 facing away from the limiting portion 23, and a closing cover 34 is formed at the end of the self-locking cover 3. The self-locking cover groove 25 corresponds to the closing cover 34 and is arranged with matching sizes. When the self-locking cover 3 locks the groove 21, the closing cover 34 extends into the self-locking cover groove 25. The closing cover 34 is used to limit the arch wire in a direction perpendicular to the base plate 1, and cooperates with the main body of the self-locking cover 3 that limits the arch wire in a direction parallel to the base plate 1 to restrict the arch wire in all directions, prevent the arch wire from moving in all directions, provide support for the fixation of the arch wire in the groove 21, and ensure the realization of the function of the self-locking bracket itself.

[0040] In some embodiments of the utility model, a stopper 26 perpendicular to the base plate 1 is provided on the side of the self-locking cover groove 25 facing away from the groove 21, and a unlocking hole 27 is provided on the stopper 26. After the closing cover 34 is inserted into the self-locking cover groove 25, when it is necessary to open the self-locking cover 3, it is necessary to insert an instrument between the closing cover 34 and the bottom of the self-locking cover groove 25 through the unlocking hole 27, and rotate the self-locking cover 3 in the opposite direction until the limiting portion 23 enters the second slot 32, and the groove 21 is opened, and the arch wire can be taken out.

[0041] In some embodiments of the utility model, an unlocking groove 35 is provided on the closing cover 34. The unlocking groove 35 is arranged opposite to the unlocking hole 27 when the self-locking cover 3 closes the locking groove 21. The setting of the unlocking groove 35 is conducive to the cooperation with the unlocking hole 27. When the self-locking cover 3 needs to be unlocked, the tool can be directly extended into the unlocking hole 27 and the unlocking groove 35 to complete the preparation work for opening the self-locking cover 3, thereby reducing the steps required to unlock the groove 21.

[0042] In some embodiments of the utility model, a shaft hole 28 is opened at one end of the body 2, one end of the shaft 22 extends into the shaft hole 28, and the other end of the shaft 22 is directly fixed to the body 2. The shaft 22 is made of elastic material, and the end of the shaft 22 extending into the shaft hole 28 is movable. The shaft 22 may be deformed under the influence of the self-locking cover 3 when rotating. The use of elastic material can facilitate it to not restrict the movement of the self-locking cover 3 when it undergoes a large elastic deformation.

[0043] like Figure 1 , Figure 6 and Fig. 9 As shown, in some embodiments of the present invention, the self-ligating brackets can be used for anterior teeth, molars and bicuspids.

[0044] like Figure 7 and Figure 8 As shown, in some embodiments of the present invention, when the self-ligating bracket is used for front teeth, it is sometimes subjected to a strong external force causing the arch wire to break through the restriction of the self-ligating cover 3. Therefore, the limiting portion 23 can be set obliquely above the groove 21, and the rotating shaft 22 is set on the side of the limiting portion 23 facing away from the groove 21, so that the rotation direction of the self-ligating cover 3 is not perpendicular to the base plate 1; when the self-ligating cover 3 locks the groove 21, when the limiting portion 23 enters the first card slot 31, the second card slot 32 is set toward the groove 21. The setting of the limiting portion 23, the first card slot 31 and the second card slot 32 makes it possible for the self-ligating cover 3 to be closed, and if the arch wire has a strong outward force, it will only push the self-ligating cover 3 in the locking direction, and will not break through the restriction of the self-ligating cover 3, causing the self-ligating cover 3 to open automatically.

[0045] In some embodiments of the utility model, when the self-ligating bracket is used for the front teeth, the self-ligating cover groove 25 is tilted upward. When the self-ligating cover 3 locks the groove 21, the closing cover 34 extends into the self-ligating cover groove 25 along the tilted direction of the self-ligating cover groove 25. In order to offset the rotational torque and the force perpendicular to the base plate 1 exerted on the arch wire, the self-ligating cover groove 25 and the closing cover 34 are also tilted to prevent the arch wire from directly applying force to the closing cover 34 to automatically unlock the groove 21.

[0046] In some embodiments of the present invention, when the self-ligating bracket is used for molars, a flexible column portion is further connected to the outer side of the body 2 .

[0047] The working process of the utility model is as follows: the base plate 1 is fixed to the outer surface of the tooth by an adhesive, a groove 21 for accommodating an arch wire is formed in the body 2 on the base plate 1, a limiting portion 23 is arranged on one side of the groove 21, the self-locking cover 3 is rotatably connected to the body 2 by a rotating shaft 22, and a first card groove 31 and a second card groove 32 corresponding to the limiting portion 23 are arranged on the side of the self-locking cover 3 close to the rotating shaft 22. When the self-locking cover 3 is in an open state, the limiting portion 23 enters the second card groove 32, and at this time, the first card groove 31 is arranged toward the groove 21, fixing the self-locking cover 3 in a vertically open state; when the self-locking cover 3 needs to lock the groove 21, the self-locking cover 3 rotates around the rotating shaft 22, the limiting portion 23 leaves the second card groove 32, and enters the first card groove 31, and the first card groove 31 cooperates with the limiting portion 23 to lock the groove 21, so that the arch wire is locked in the groove 21, and the locking of the self-locking bracket is completed.

[0048] In summary, the embodiment of the utility model provides a self-ligating bracket, which is convenient for the arch wire to directly and vertically enter the groove 21. The entry angle of the arch wire when the self-ligating cover 3 is opened is large, which is conducive to the doctor's convenient removal of the arch wire during clinical practice; when the locking bracket is locked, the self-ligating cover 3 is parallel to the base plate 1, and the size and structure are thin, which prevents frequent occlusal interference during wearing, reduces the foreign body sensation during wearing, and improves the wearing comfort; and the arch wire can be placed on the self-ligating cover 3 during the locking process, and the arch wire will be directly sent into the groove 21 during the rotation of the self-ligating cover 3, which is convenient for the doctor's clinical operation. There is no need to put the arch wire into the groove 21 as a whole, which simplifies the installation process of the self-ligating bracket.

[0049] The above are only preferred implementations of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A self-ligating bracket, characterized in that: include Base plate; A body, the body is formed by protruding outward from the bottom plate, a groove for accommodating an arch wire is formed in the body, a rotating shaft is inserted into the body, and a limiting portion is formed on one side of the groove close to the rotating shaft; A self-locking cover, the self-locking cover is rotatably connected to the rotating shaft and can lock the groove when rotating, and the self-locking cover is provided with a first and a second adjacent slot on one side facing the limiting portion; Wherein, when the self-locking cover opens and closes the groove, the limiting portion enters the first card slot and the second card slot in sequence.

2. The self-ligating bracket according to claim 1, characterized in that: The limiting portion is configured to be semi-cylindrical, and the first clamping slot and the second clamping slot are also configured to be arc-shaped to match the size of the limiting portion.

3. The self-ligating bracket according to claim 1, characterized in that: A circular arc-shaped recessed portion is arranged on one side of the limiting portion facing the groove, and an end surface of one side of the self-locking cover close to the first clamping groove is arranged as an arc-shaped surface matching with the recessed portion.

4. The self-ligating bracket according to claim 1, characterized in that: A self-locking cover groove recessed toward the inner side of the bottom plate is formed on the side of the groove facing away from the limiting portion, and a closing cover is formed at the end of the self-locking cover. When the self-locking cover locks the groove, the closing cover extends into the self-locking cover groove.

5. The self-ligating bracket according to claim 4, characterized in that: A stopper perpendicular to the bottom plate is arranged on the side of the self-locking cover groove facing away from the groove, and a lock opening hole is arranged on the stopper.

6. The self-ligating bracket according to claim 5, characterized in that: The closing cover is provided with an unlocking groove, which is arranged opposite to the unlocking hole when the self-locking cover locks the groove.

7. The self-ligating bracket according to claim 1, characterized in that: A rotating shaft hole is formed at one end of the body, one end of the rotating shaft extends into the rotating shaft hole, and the other end of the rotating shaft is directly fixed to the body.

8. The self-ligating bracket according to claim 4, characterized in that: The self-ligating bracket can be used for anterior teeth, molars and bicuspids.

9. The self-ligating bracket according to claim 8, characterized in that: When the self-ligating bracket is used for front teeth, the limiting portion is arranged obliquely above the groove, and the rotating shaft is arranged on a side of the limiting portion facing away from the groove; Wherein, when the self-locking cover locks the groove and the limiting portion enters the first locking groove, the second locking groove is arranged toward the groove.

10. The self-ligating bracket according to claim 9, characterized in that: When the self-ligating bracket is used for front teeth, the self-ligating cover groove is arranged to be inclined upward, and when the self-ligating cover locks the groove, the closing cover extends into the self-ligating cover groove along the inclined direction of the self-ligating cover groove.

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