Active self-ligating brackets and orthodontic correction systems

Abstract

The present application discloses an active self-locking bracket and an orthodontic correction system, wherein an active self-locking bracket comprises: a mesh bottom; a bracket body; a cover plate, which is movably matched to the first side surface and has an open position and a corresponding closed position for opening the constraint groove; an elastic member, which is installed on the cover plate and moves with the cover plate; when the cover plate is in the closed position, at least a portion of the elastic member extends into the constraint groove. The technical solution disclosed in the present application realizes an overall structure that is easy to produce and assemble and has a good active self-locking effect on the archwire on a bracket of millimeter size through structural optimization of the bracket body, the cover plate and the elastic member, overcomes the technical problems that have been plaguing technicians in this field for a long time, and has extremely high promotion value.

Description

Technical Field

[0001] The present application relates to the field of dental orthodontics, and in particular to active self-ligating brackets and orthodontic correction systems. Background Art

[0002] During orthodontic treatment, orthodontic brackets are fixed on the tooth surface, the archwire passes through the archwire groove on the bracket, and the archwire is directly tied to the archwire groove of the bracket through a ligature rubber ring or a ligature wire. The correction force of the archwire is transmitted to the teeth through the bracket, causing the teeth to move as expected, thereby achieving the purpose of correcting the teeth.

[0003] Self-ligating brackets can generally be divided into two categories: passive and active. The locking plate of a passive self-ligating bracket does not form a constraint with the archwire, which is conducive to the archwire sliding in the archwire groove and thus controlling the movement of the teeth. It has the advantage of creating a low-friction environment in the early stage of correction, which is conducive to aligning and leveling the teeth. Active self-ligating brackets use elastic movable parts to embed the archwire into the bracket groove, forming a constraint between the elastic part and the archwire. At the same time, the elastic part can also store and gradually release energy, transmitting continuous light force to the teeth and supporting structures, producing precise and controllable movement, thereby effectively controlling the torque expression of the teeth in the groove.

[0004] For example, a Chinese patent document with publication number CN209187014U discloses an active self-locking bracket, which includes a bracket body, a groove is provided on the bracket body, so that the two sides of the groove form a first ligation wing and a second ligation wing; a fixed plate is provided on the bracket body, and the fixed plate includes a movable plate and a pressure plate; the movable plate slides along a sliding channel provided on the bracket body. This type of technical solution realizes active self-locking of the archwire through a C-shaped elastic component, but a larger elastic component means a larger deformation stroke, which will lead to a decrease in the restraint ability of the archwire; at the same time, the elastic component wrapped around the periphery of the bracket is prone to cause a foreign body sensation. Furthermore, foreign bodies in the oral cavity and harsh working conditions such as dental calculus will also reduce the working efficiency of the elastic component.

[0005] In order to overcome the above problems, attempts have been made to set elastic components in the groove. For example, a Chinese patent document with publication number CN208048816U discloses a self-ligating bracket with a spring groove bottom, and its structure includes: a bracket base, a bracket body, and an archwire groove with a spring groove bottom. Among them, an arc-shaped bottom net is provided at the bottom of the bracket base, and the central part of the bracket body is designed with an archwire groove of the spring groove bottom for the orthodontic archwire to penetrate. Two pairs of symmetrical ligation wings are respectively provided on both sides of the longitudinal groove of the bracket body, and a limit lock groove and a sliding lock plate are provided in the ligation wing. A protrusion is provided in the limit lock groove to fix the sliding lock plate. This type of technical solution meets the principle of mechanical design but ignores the structural size of the bracket. In order to reduce the foreign body sensation, the size of the bracket is generally millimeter-level. Processing structures such as the spring groove bottom in this size dimension poses very high challenges to processing accuracy and assembly difficulty, and is difficult to promote in industry and commerce.

[0006] The inventors found that under the existing materials and processing conditions, how to achieve an overall structure that is easy to produce and assemble on a millimeter-sized bracket and has a good active self-locking effect on the archwire has become a problem that many technicians in the industry are committed to solving. Summary of the invention

[0007] In order to solve the above technical problems, the present application discloses an active self-locking bracket, comprising:

[0008] The mesh base is used for bonding with the tooth surface at the corresponding position;

[0009] A bracket body connected to the mesh bottom, the bracket body is provided with a restraining groove for the archwire to pass through, and the restraining groove is open on the first side surface of the bracket body;

[0010] A cover sheet, movably fitted to the first side surface and having an open position for opening the restraining groove and a corresponding closed position;

[0011] An elastic member is installed on the cover sheet and moves with the cover sheet; when the cover sheet is in a closed position, at least a portion of the elastic member extends into the restraining groove.

[0012] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0013] Optionally, the elastic member includes:

[0014] A connecting portion, connected to the cover sheet and moving with the cover sheet;

[0015] The working portion is connected to the connecting portion and extends into the restraining groove.

[0016] Optionally, the working portion is an end portion close to the mesh bottom for interacting with the arch wire.

[0017] Optionally, a working window is provided on a side of the cover sheet facing the net bottom; the working part extends into the restraining groove through the working window.

[0018] Optionally, the working part is U-shaped or W-shaped as a whole, and the two ends of the U-shaped or W-shaped opening are respectively a first positioning end connected to the connecting part and a second positioning end cooperating with the cover plate. The bottom of the U-shape or W-shape can interact with the arch wire, and the working part can switch the relative distance of the bottom of the U-shape or W-shape relative to the bottom of the constraint groove through its own deformation.

[0019] Optionally, a restraining cavity is provided on the cover plate, and the second positioning end is accommodated in the restraining cavity.

[0020] The present application also discloses an active self-locking bracket, comprising:

[0021] The mesh base is used for bonding with the tooth surface at the corresponding position;

[0022] A bracket body connected to the mesh bottom, the bracket body is provided with a restraining groove for the archwire to pass through, and the restraining groove is open on the first side surface of the bracket body;

[0023] A cover sheet, movably fitted to the first side surface and having an open position for opening the restraining groove and a corresponding closed position;

[0024] An elastic member, mounted on the cover sheet and moving with the cover sheet;

[0025] At least a portion of the elastic member is used to interact with the arch wire, and the action positions include at least two positions in the movement direction of the cover plate.

[0026] Optionally, the elastic member includes:

[0027] A connecting portion, connected to the cover sheet and moving with the cover sheet;

[0028] The working part is connected to the connecting part and provides the action site.

[0029] Optionally, the contact between the action site and the arch wire is at least in line contact.

[0030] Optionally, in the direction of movement of the cover plate, the action site includes at least two opposite side edges of the arch wire.

[0031] Optionally, the cross-sectional shape of the working portion is W-shaped or U-shaped, wherein the bottom of the W-shape or U-shape forms the action site.

[0032] The present application also discloses an active self-locking bracket, comprising:

[0033] The mesh base is used for bonding with the tooth surface at the corresponding position;

[0034] A bracket body connected to the mesh bottom, the bracket body is provided with a positioning groove and a restraining groove for passing an archwire, and the restraining groove is opened on a first side surface of the bracket body;

[0035] A cover sheet, movably fitted to the first side surface and having an open position for opening the restraining groove and a corresponding closed position;

[0036] An elastic member, mounted on the cover sheet and moving with the cover sheet;

[0037] At least a portion of the elastic member is used to interact with the arch wire, and an action portion extends in the axial direction of the constraint groove.

[0038] Optionally, the elastic member includes:

[0039] A connecting portion, connected to the cover sheet and moving with the cover sheet;

[0040] The working part is connected to the connecting part and provides the action site.

[0041] Optionally, the contact between the action site and the arch wire is at least in line contact.

[0042] Optionally, the cross-sectional shape of the working portion is W-shaped or U-shaped, wherein the bottom of the W-shape or U-shape forms the action site.

[0043] The present application also discloses an active self-locking bracket, comprising:

[0044] The mesh base is used for bonding with the tooth surface at the corresponding position;

[0045] A bracket body connected to the mesh bottom, the bracket body is provided with a restraining groove for the archwire to pass through, and the restraining groove is open on the first side surface of the bracket body;

[0046] A cover plate, rotatably engaged with the first side surface and having an open position for opening the restraining groove and a corresponding closed position;

[0047] An elastic member, the elastic member comprising:

[0048] A connecting portion, connected to the cover sheet and moving with the cover sheet;

[0049] The working part is connected to the connecting part and can interact with the arch wire. The working part has an avoidance state accommodated in the cover piece and a working state protruding from the cover piece. When the cover piece is in the open position, the working part is in the working state.

[0050] Optionally, the cover piece is retracted inwardly toward the side of the net bottom to form a release space, and when the cover piece is in an open position, the bracket body closes the release space, and when the cover piece is in a closed position, the release space is connected to the constraint groove.

[0051] Optionally, when the cover is in the closed position, the working part protrudes out of the release space and enters the restraining groove when in a working state.

[0052] Optionally, a positioning groove is provided on the bracket body, and when the cover piece is in the open position, the working part protrudes out of the release space and enters the positioning groove when in a working state.

[0053] The present application also discloses an active self-locking bracket, comprising:

[0054] The mesh base is used for bonding with the tooth surface at the corresponding position;

[0055] A bracket body connected to the mesh bottom, the bracket body is provided with a restraining groove for the archwire to pass through, and the restraining groove is open on the first side surface of the bracket body;

[0056] A cover plate, rotatably engaged with the first side surface and having an open position for opening the restraining groove and a corresponding closed position;

[0057] An elastic member, the elastic member comprising:

[0058] A connecting portion, connected to the cover sheet and moving with the cover sheet;

[0059] The working part is U-shaped or W-shaped as a whole, and the two ends of the U-shape or W-shape are respectively matched with the connecting part and the cover plate. The bottom of the U-shape or W-shape can interact with the arch wire, and the working part can switch the relative distance of the bottom of the U-shape or W-shape relative to the bottom of the constraint groove through its own deformation.

[0060] Optionally, two ends of the U-shaped or W-shaped opening are respectively a first positioning end connected to the connecting portion and a second positioning end cooperating with the cover plate, and a restraining cavity is provided on the cover plate, and the second positioning end is accommodated in the restraining cavity.

[0061] Optionally, a working window is provided on a side of the cover sheet facing the net bottom; the working part extends into the restraining groove through the working window.

[0062] Optionally, the cover piece is retracted inward toward the side of the net bottom to form a release space, and when the cover piece is in an open position, the bracket body closes the release space, and when the cover piece is in a closed position, the release space is connected to the constraint groove, and the working part extends into the constraint groove through the release space.

[0063] The present application also discloses an active self-locking bracket, comprising:

[0064] The mesh base is used for bonding with the tooth surface at the corresponding position;

[0065] A bracket body connected to the mesh bottom, the bracket body is provided with a restraining groove for the archwire to pass through, and the restraining groove is open on the first side surface of the bracket body;

[0066] A cover sheet, movably fitted to the first side surface and having an open position for opening the restraining groove and a corresponding closed position;

[0067] An elastic member is installed on the cover sheet and moves with the cover sheet; the elastic member has a self-locking state in which it is deformed toward the cover sheet under the pressure of the arch wire and a free state away from the cover sheet.

[0068] Optionally, the cover sheet is retracted inwardly toward the side of the net bottom to form a release space, and at least a portion of the elastic member in the self-locking state is retracted into the release space.

[0069] Optionally, the elastic member includes:

[0070] A connecting portion, connected to the cover sheet and moving with the cover sheet;

[0071] The working part is connected to the connecting part and deforms itself to realize the free state and the self-locking state.

[0072] Optionally, when the cover is in an open position, the bracket body closes the release space; when the cover is in a closed position, the release space is communicated with the restraint groove, and the working part extends into the restraint groove through the release space.

[0073] The present application also discloses an active self-locking bracket, comprising:

[0074] The mesh base is used for bonding with the tooth surface at the corresponding position;

[0075] A bracket body connected to the mesh bottom, the bracket body is provided with a positioning groove and a restraining groove for passing an archwire, and the restraining groove is opened on a first side surface of the bracket body;

[0076] A cover piece, movably matched with the first side surface and having an open position for opening the restraining groove and a corresponding closed position, wherein a working window is provided on a side of the cover piece facing the net bottom;

[0077] An elastic member, mounted on the cover sheet;

[0078] When the cover is in the closed position, the elastic member extends into the restraining groove through the working window.

[0079] Optionally, the elastic member includes:

[0080] A connecting portion, connected to the cover sheet and moving with the cover sheet;

[0081] The working part is connected to the connecting part and is U-shaped or W-shaped. The two ends of the U-shaped or W-shaped opening are respectively a first positioning end connected to the connecting part and a second positioning end matched with the cover plate. The first positioning end is connected to the connecting part through the working window.

[0082] Optionally, a restraining cavity is provided on the cover plate, the restraining cavity and the working window are independently provided, and the second positioning end is accommodated in the restraining cavity.

[0083] The present application also discloses a dynamic self-locking bracket, comprising:

[0084] The mesh base is used for bonding with the tooth surface at the corresponding position;

[0085] A bracket body connected to the mesh bottom, the bracket body is provided with a positioning groove and a restraining groove for passing an archwire, and the restraining groove is opened on a first side surface of the bracket body;

[0086] A cover sheet, movably fitted to the first side surface and having an open position for opening the restraining groove and a corresponding closed position;

[0087] An elastic member, mounted on the cover sheet and moving with the cover sheet;

[0088] When the cover is in the closed position, at least a portion of the elastic member extends into the restraining groove; when the cover is in the open position, at least a portion of the elastic member extends into the positioning groove.

[0089] Optionally, the shape of the positioning groove is complementary to the shape of the corresponding part of the elastic member.

[0090] Optionally, the elastic member includes:

[0091] A connecting portion, connected to the cover sheet and moving with the cover sheet;

[0092] The working portion is connected to the connecting portion and is used to extend into the restraining groove or the positioning groove, and the shape of the positioning groove is complementary to the shape of the working portion.

[0093] Optionally, a blocking portion is provided between the constraint groove and the positioning groove, and when the cover is in the open position, the side edge of the working portion close to the constraint groove abuts against the blocking portion, and when the cover is in the closed position, the side edge of the working portion close to the positioning groove abuts against the blocking portion.

[0094] Optionally, the working part has an avoidance state in which it is accommodated in the cover sheet and a working state in which it protrudes out of the cover sheet; the blocking part is arranged in an arc shape and can drive the working part to enter the avoidance state.

[0095] Optionally, the cover sheet is retracted inwardly toward the side of the net bottom to form a release space, and at least a portion of the elastic member in the avoidance state retracts into the release space.

[0096] The present application also discloses an active self-locking bracket, comprising:

[0097] The mesh base is used for bonding with the tooth surface at the corresponding position;

[0098] A bracket body connected to the mesh bottom, the bracket body is provided with a positioning groove and a restraining groove for passing an archwire, and the restraining groove is opened on a first side surface of the bracket body;

[0099] Cover sheet, including

[0100] A sliding seat, movably fitted to the first side surface and with a top surface that is hollow to form an assembly cavity;

[0101] A closing plate, mounted on the sliding seat and closing the assembly cavity;

[0102] An elastic member moves with the cover plate, one end of the elastic member is installed in the assembly cavity, and the other end protrudes from the sliding seat toward the side of the net bottom and can interact with the arch wire.

[0103] Optionally, the elastic member includes:

[0104] A connecting portion, fixedly connected to the assembly cavity or clamped in the assembly cavity by the sliding seat and the closing plate;

[0105] The working part is connected to the connecting part and extends from the sliding seat toward the side of the net bottom.

[0106] Optionally, an adapting window is provided on a side of the sliding seat facing the net bottom, and the working part protrudes toward the net bottom through the adapting window.

[0107] Optionally, the opening size of the adaptation window matches the size of the working part.

[0108] Optionally, an adapting protrusion is provided on the side of the closing plate facing the net bottom, and the adapting protrusion divides the adapting window into a working window and a restraining cavity.

[0109] Optionally, the working part itself is U-shaped or W-shaped, and the two ends of the U-shaped or W-shaped opening are respectively a first positioning end connected to the connecting part and a second positioning end cooperating with the cover plate, the first positioning end is connected to the connecting part through the working window, and the second positioning end is accommodated in the constraint cavity.

[0110] Optionally, the second positioning end is inserted into the restraining cavity or is clamped in the restraining cavity by the sliding seat and the closing plate.

[0111] Optionally, the side of the closing plate facing away from the net bottom and the side of the sliding seat facing away from the net bottom are smoothly transitioned, and the two are sealed and connected.

[0112] Optionally, sliding blocks are provided on both sides of the sliding seat, and slideways corresponding to the sliding blocks are provided on the bracket body, and the assembly cavity is arranged between the two sliding blocks.

[0113] The present application also discloses an orthodontic correction system, comprising a plurality of active self-ligating brackets and archwires in the above technical solution, wherein the archwire is used to sequentially pass through the restraining grooves of each of the active self-ligating brackets.

[0114] The technical solution disclosed in the present application achieves an overall structure that is easy to produce and assemble and has a good active self-locking effect on the archwire on a millimeter-sized bracket through structural optimization of the bracket body, the cover plate and the elastic member. It overcomes the technical problems that have long plagued technical personnel in this field and has extremely high promotion value.

[0115] The specific beneficial technical effects will be further explained in the specific implementation methods in combination with specific structures or steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0116] Figure 1 to Figure 2 They are respectively schematic diagrams of the arrangement of self-ligating brackets in the prior art and possible problems;

[0117] Figure 3 to Figure 4 In order to overcome the existing technology Figure 1 and Figure 2 Schematic diagrams showing different perspectives of the solution to the technical problem shown;

[0118] Figure 5 Schematic diagram of the active self-locking bracket in the first embodiment;

[0119] Figure 6 for Figure 5 Schematic diagram of opening the active self-locking bracket;

[0120] Figure 7 for Figure 5 A schematic diagram of the cooperation between the cover piece and the bracket body of the active self-locking bracket;

[0121] Figure 8 for Figure 5 Schematic diagram of assembly of active self-locking bracket cover;

[0122] Fig. 9 for Figure 8 A schematic cross-sectional view of the cover plate and the elastic member;

[0123] Fig.10 for Figure 5 Schematic diagram of the cross section of the active self-ligating bracket;

[0124] Fig.11 for Figure 5 Schematic diagram of the free state of the active self-locking bracket;

[0125] Fig.12 for Fig.11 Schematic diagram of the cross section of the active self-ligating bracket;

[0126] Fig.13 for Figure 5 Schematic diagram of the active self-ligating bracket and the smaller round archwire;

[0127] Fig.14 for Fig.13 Schematic diagram of active self-ligating brackets from different angles;

[0128] Fig.15 for Fig.13 Schematic diagram of the cross section of the active self-ligating bracket;

[0129] Fig.16 for Figure 5 Schematic diagram of the active self-ligating bracket and medium-sized square archwire;

[0130] Fig.17 for Fig.16 Schematic diagram of active self-ligating brackets from different angles;

[0131] Fig.18 for Fig.16 Schematic diagram of the cross section of the active self-ligating bracket;

[0132] Fig.19 for Fig.18 A partial enlarged schematic diagram of the working part of the middle elastic part;

[0133] Fig. 20 for Figure 5 Schematic diagram of the active self-ligating bracket and the larger square archwire;

[0134] Fig.21 for Fig. 20 Schematic diagram of active self-ligating brackets from different angles;

[0135] Fig. 22 for Fig. 20 Schematic diagram of the cross section of the active self-ligating bracket;

[0136] Fig.23 for Fig. 22 A partial enlarged schematic diagram of the working part of the middle elastic part;

[0137] Fig.24 for Figure 5 Schematic diagram of the cover of the active self-locking bracket in the open position;

[0138] Fig.25 for Fig.24 Schematic diagram of the cross section of the active self-ligating bracket;

[0139] Fig.26 Schematic diagram of an active self-locking bracket in the second embodiment;

[0140] Fig. 27 for Fig.26 A schematic diagram of the cooperation between the cover piece and the bracket body of the active self-locking bracket;

[0141] Fig.28 for Fig. 27 Schematic diagram of assembly of active self-locking bracket cover;

[0142] Fig.29 for Fig.28 A schematic cross-sectional view of the cover plate and the elastic member;

[0143] Fig.30 for Fig.29 A cross-sectional schematic diagram of the cover plate and the elastic member from another viewing angle;

[0144] Fig.31 for Fig.30 Schematic diagram of the assembly relationship between the middle cover plate and the elastic member;

[0145] Fig.32 for Fig.26 Schematic diagram of the coordination relationship between the active self-ligating bracket and the archwire;

[0146] Fig.33 for Fig.32 Schematic diagram of the cross section of the active self-ligating bracket;

[0147] Fig.34 This is a schematic diagram of an active self-locking bracket in the third embodiment;

[0148] Fig.35 for Fig.34 A schematic diagram of the cooperation between the cover piece and the bracket body of the active self-locking bracket;

[0149] Fig.36 for Fig.35 A schematic cross-sectional view of the cover plate and the elastic member;

[0150] Fig.37 for Fig.36 Schematic diagram of the assembly of the active self-ligating bracket cover in a cross-sectional view;

[0151] Fig.38 for Fig.36 Schematic diagram of assembly of active self-locking bracket cover;

[0152] Fig.39 for Fig.36 A schematic cross-sectional assembly diagram of the cover plate and the elastic member from another viewing angle;

[0153] Fig.40 for Fig.36 Schematic diagram of the coordination relationship between the active self-ligating bracket and the archwire;

[0154] Fig.41 for Fig.41 Schematic diagram of the cross-section of the active self-ligating bracket.

[0155] The reference numerals in the figures are described as follows:

[0156] 1. Net bottom;

[0157] 2. bracket body; 21. restraining groove; 22. first side surface; 23. positioning groove; 24. blocking portion; 25. slideway;

[0158] 3. Archwire;

[0159] 4. Cover plate; 41. Sliding seat; 411. Adaptation window; 412. Working window; 413. Constraint cavity; 414. Release space; 415. Assembly cavity; 416. Slider; 42. Closing plate; 421. Adaptation protrusion;

[0160] 5. elastic member; 51. connecting portion; 52. working portion; 521. first positioning end; 522. second positioning end; 53. action portion;

[0161] 61. dotted line position; 62. dotted line position. DETAILED DESCRIPTION

[0162] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0163] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component at the same time.

[0164] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0165] Reference Figure 1 To Attachment Figure 4 As shown in the figure, the bracket structure in the prior art is shown. As the correction process progresses, the spatial posture of the teeth is adjusted under the action of the archwire 3, which may cause the following Figure 2 In the case shown in the figure, the archwire 3 and the bottom of the constraint slot cannot be completely fitted together, thereby affecting the expression of the preset correction data of the bracket. In the prior art, a common means to overcome this problem is to achieve a stable connection between the archwire 3 and the bracket by ligating the wire, such as attaching Figure 3 and attached Figure 4 As shown. Or as the C-shaped elastic member mentioned in the background technology. Regardless of the ligature wire or the C-shaped elastic member mentioned above, there are the following problems:

[0166] 1. It limits the development of the bracket structure. The ligature wings corresponding to the ligature wire are easily spread out in space, which may cause a foreign body sensation. The same is true for the C-shaped elastic parts.

[0167] 2. The gaps between the ligature structure, C-shaped elastic parts and brackets are easily affected by foreign matter and dental calculus in the oral cavity, which may seriously affect the orthodontic process;

[0168] 3. The setting of the ligature wire, the adjustment of the C-shaped elastic part and the subsequent observation require the operation of medical staff, which increases the chairside operation time and the number of follow-up visits, increases the workload of medical staff and affects the work and life of patients.

[0169] Reference Figure 5 To Attachment Fig.41 In the various embodiments shown, the present application discloses an active self-ligating bracket, comprising:

[0170] The mesh bottom 1 is used for bonding with the tooth surface at the corresponding position;

[0171] The bracket body 2 is connected to the mesh bottom 1, and a restraining groove 21 for the arch wire 3 to pass through is opened on the bracket body 2, and the restraining groove 21 is opened on the first side surface 22 of the bracket body 2;

[0172] The cover plate 4 is movably fitted to the first side surface 22 and has an open position of the open constraint groove 21 (see attached Figure 6 ) and the corresponding closed position (see Appendix Figure 5 );

[0173] The elastic member 5 is mounted on the cover sheet 4 and moves with the cover sheet 4 . When the cover sheet 4 is in the closed position, at least a portion of the elastic member 5 extends into the restraining groove 21 .

[0174] Compared with the arrangement in the prior art in which the C-shaped elastic member 5 extends to the outside of the bracket body 2, the elastic member 5 in this embodiment moves with the cover plate 4, which can effectively control the volume of the elastic member 5 and reduce the foreign body sensation; at the same time, the movement of the cover plate 4 and the movement process of the elastic member 5 are synchronized to reduce the time of chairside operation.

[0175] For the specific configuration of the elastic member 5, see the attached Figure 8 To Attachment Fig.12 , Attachment Fig.30 To Attachment Fig.33 And attached Fig.38 To Attachment Fig.41 As shown, the elastic member 5 comprises:

[0176] A connecting portion 51 connected to the cover sheet 4 and moving with the cover sheet 4;

[0177] The working portion 52 is connected to the connecting portion 51 and extends into the restraining groove 21. Further, the working portion 52 is the end portion close to the mesh base 1 and is used to interact with the archwire 3. A working window 412 is provided on the side of the cover sheet 4 facing the mesh base 1; the working portion 52 extends into the restraining groove 21 through the working window 412. In the drawings, the working portion 52 is U-shaped as a whole (see the attached drawings). Fig.36 ) or W-shaped (see attached Figure 8 ), the two ends of the U-shaped or W-shaped opening are respectively a first positioning end 521 connected to the connecting portion 51 and a second positioning end 522 matched with the cover sheet 4, refer to the attached Fig.23 As shown, the U-shaped or W-shaped bottom can interact with the archwire 3, and the working portion 52 can switch the relative distance of the U-shaped or W-shaped bottom relative to the bottom of the constraint groove 21 by its own deformation. The cover plate 4 is provided with a constraint cavity 413, and the second positioning end 522 is received in the constraint cavity 413.

[0178] Reference Figure 5 To Attachment Fig.41 In the various embodiments shown, the present application also discloses an active self-locking bracket, comprising:

[0179] The mesh bottom 1 is used for bonding with the tooth surface at the corresponding position;

[0180] The bracket body 2 is connected to the mesh bottom 1, and a restraining groove 21 for the arch wire 3 to pass through is opened on the bracket body 2, and the restraining groove 21 is opened on the first side surface 22 of the bracket body 2;

[0181] The cover sheet 4 is movably matched with the first side surface 22 and has an open position for opening the restraining groove 21 and a corresponding closed position;

[0182] The elastic member 5 is mounted on the cover sheet 4 and moves with the cover sheet 4;

[0183] At least a portion of the elastic member 5 is used to interact with the archwire 3, and the action portion 53 at least includes the movement direction of the cover plate 4 (i.e., the adjacent Fig.12 Two places in the left and right directions).

[0184] Combined with Figure 2 It can be seen that the arch wire 3 may have a twisting motion tendency relative to the bracket body 2, thereby causing the bottom surface of the arch wire 3 to separate or partially separate from the bottom of the constraint groove 21. In this embodiment, the elastic member 5 and the action part 53 of the arch wire 3 are arranged to avoid the occurrence of the above situation.

[0185] For specific implementation methods, see the attached Figure 8 To Attachment Fig.12 , Attachment Fig.30 To Attachment Fig.33 And attached Fig.38 To Attachment Fig.41 As shown, the elastic member 5 comprises:

[0186] A connecting portion 51 connected to the cover sheet 4 and moving with the cover sheet 4;

[0187] The working portion 52 is connected to the connecting portion 51 and provides an action portion 53. Furthermore, the contact between the action portion 53 and the archwire 3 is at least a line contact. In actual products, due to the product processing accuracy and the deformation of the elastic member 5, the line contact will be expressed as a surface contact to a certain extent. Fig.34 To Attachment Fig.41 In the illustrated embodiment, the contact between the action site 53 and the arch wire 3 is in surface contact. In the movement direction of the cover plate 4, the action site 53 includes at least two opposite side edges of the arch wire 3. The cross-sectional shape of the working portion 52 is W-shaped or U-shaped, wherein the bottom of the W-shape or U-shape forms the action site 53.

[0188] Reference Figure 5 To Attachment Fig.41 In the various embodiments shown, the present application also discloses an active self-locking bracket, comprising:

[0189] The mesh bottom 1 is used for bonding with the tooth surface at the corresponding position;

[0190] The bracket body 2 is connected to the mesh bottom 1, and is provided with a positioning groove 23 and a restraining groove 21 for the archwire 3 to pass through, and the restraining groove 21 is open on the first side surface 22 of the bracket body 2;

[0191] The cover sheet 4 is movably matched with the first side surface 22 and has an open position for opening the restraining groove 21 and a corresponding closed position;

[0192] The elastic member 5 is mounted on the cover sheet 4 and moves with the cover sheet 4;

[0193] At least a portion of the elastic member 5 is used to interact with the arch wire 3 , and the action portion 53 extends in the axial direction of the constraint groove 21 .

[0194] Combined with Figure 2 It can be seen that the arch wire 3 may have a twisting motion tendency relative to the bracket body 2, thereby causing the bottom surface of the arch wire 3 to separate or partially separate from the bottom of the constraint groove 21. Figure 2 The separation in the radial direction of the arch wire 3 is shown in the figure. In fact, the above separation may occur in the axial direction of the arch wire 3. In this embodiment, the above situation is avoided by setting the elastic member 5 and the action part 53 of the arch wire 3.

[0195] For specific implementation methods, see the attached Figure 8 To Attachment Fig.12 , Attachment Fig.30 To Attachment Fig.33 And attached Fig.38 To Attachment Fig.41 As shown, the elastic member 5 comprises:

[0196] A connecting portion 51 connected to the cover sheet 4 and moving with the cover sheet 4;

[0197] The working portion 52 is connected to the connecting portion 51 and provides an action portion 53. Furthermore, the contact between the action portion 53 and the archwire 3 is at least a line contact. In actual products, due to the product processing accuracy and the deformation of the elastic member 5, the line contact will be expressed as a surface contact to a certain extent. Fig.34 To Attachment Fig.41 In the illustrated embodiment, the contact between the active part 53 and the arch wire 3 is in surface contact. The cross-sectional shape of the working portion 52 is W-shaped or U-shaped, wherein the bottom of the W-shaped or U-shaped portion forms the active part 53 .

[0198] Reference Figure 5 To Attachment Fig.41 In the various embodiments shown, the present application also discloses an active self-locking bracket, comprising:

[0199] The mesh bottom 1 is used for bonding with the tooth surface at the corresponding position;

[0200] The bracket body 2 is connected to the mesh bottom 1, and a restraining groove 21 for the arch wire 3 to pass through is opened on the bracket body 2, and the restraining groove 21 is opened on the first side surface 22 of the bracket body 2;

[0201] The cover plate 4 is rotatably matched with the first side surface 22 and has an open position for opening the restraining groove 21 and a corresponding closed position;

[0202] The elastic member 5 includes:

[0203] A connecting portion 51 connected to the cover sheet 4 and moving with the cover sheet 4;

[0204] The working portion 52 is connected to the connecting portion 51 and can interact with the arch wire 3. The working portion 52 has an evasive state accommodated in the cover piece 4 and a working state protruding from the cover piece 4. When the cover piece 4 is in the open position, the working portion 52 is in the working state.

[0205] In this embodiment, the elastic member 5 capable of switching states relative to the cover plate 4 is used to constrain the arch wire 3, thereby overcoming the dilemma between the constraints of the arch wire 3 and the difficulty of production and assembly in the prior art. Compared with the C-shaped elastic member arranged outside, the elastic member 5 in this embodiment can effectively avoid the technical problems existing in the prior art.

[0206] For specific implementation methods, see the attached Figure 8 To Attachment Fig.12 , Attachment Fig.30 To Attachment Fig.33 And attached Fig.38 To Attachment Fig.41 As shown, the cover sheet 4 is retracted inwardly toward the side of the net bottom 1 to form a release space 414. When the cover sheet 4 is in the open position, the bracket body 2 closes the release space 414 (depending on the size and matching of the cover sheet 4 and the bracket body 2, the bracket body 2 may not completely close the release space 114, for example, Fig.23 In the figure, the release space 414 on the right side of the cover sheet 4 is exposed to the outside), and when the cover sheet 4 is in the closed position, the release space 414 is connected to the constraint groove 21. When the cover sheet 4 is in the closed position, the working part 52 is in the working state and extends out of the release space 414 to enter the constraint groove 21. A positioning groove 23 is provided on the bracket body 2, and when the cover sheet 4 is in the open position, the working part 52 is in the working state and extends out of the release space 414 to enter the positioning groove 23.

[0207] Reference Figure 5 To Attachment Fig.41 In the various embodiments shown, the present application also discloses an active self-locking bracket, comprising:

[0208] The mesh bottom 1 is used for bonding with the tooth surface at the corresponding position;

[0209] The bracket body 2 is connected to the mesh bottom 1, and a restraining groove 21 for the arch wire 3 to pass through is opened on the bracket body 2, and the restraining groove 21 is opened on the first side surface 22 of the bracket body 2;

[0210] The cover plate 4 is rotatably matched with the first side surface 22 and has an open position for opening the restraining groove 21 and a corresponding closed position;

[0211] The elastic member 5 includes:

[0212] A connecting portion 51 connected to the cover sheet 4 and moving with the cover sheet 4;

[0213] The working portion 52 is U-shaped or W-shaped as a whole, and the two ends of the U-shape or W-shape cooperate with the connecting portion 51 and the cover plate 4 respectively. The bottom of the U-shape or W-shape can interact with the arch wire 3, and the working portion 52 can switch the relative distance of the bottom of the U-shape or W-shape relative to the bottom of the constraint groove 21 through its own deformation.

[0214] The working portion 52 can adapt to the sizes of archwires 3 of different sizes by deforming itself, so that it is adaptive to different treatment processes, can effectively reduce the number of follow-up visits, and reduce the burden on medical staff while ensuring the treatment effect.

[0215] For specific implementation methods, see the attached Figure 8 To Attachment Fig.12 , Attachment Fig.30 To Attachment Fig.33 And attached Fig.38 To Attachment Fig.41 As shown, the two ends of the U-shaped or W-shaped opening are respectively a first positioning end 521 connected to the connecting portion 51 and a second positioning end 522 matched with the cover sheet 4. The cover sheet 4 is provided with a restraining cavity 413, and the second positioning end 522 is received in the restraining cavity 413. A working window 412 is provided on the side of the cover sheet 4 facing the mesh bottom 1; the working portion 52 extends into the restraining groove 21 through the working window 412. The cover sheet 4 is retracted inwardly toward the side of the mesh bottom 1 to form a release space 414. When the cover sheet 4 is in the open position, the bracket body 2 closes the release space 414 (depending on the different sizes and the matching of the cover sheet 4 and the bracket body 2, the bracket body 2 may not completely close the release space 114, for example ... Fig.23 In the figure, the release space 414 on the right side of the cover plate 4 is exposed to the outside), the cover plate 4 is in the closed position, the release space 414 is connected to the constraint groove 21, and the working part 52 extends into the constraint groove 21 through the release space 414.

[0216] Reference Figure 5 To Attachment Fig.41 In the various embodiments shown, the present application also discloses an active self-locking bracket, comprising:

[0217] The mesh bottom 1 is used for bonding with the tooth surface at the corresponding position;

[0218] The bracket body 2 is connected to the mesh bottom 1, and a restraining groove 21 for the arch wire 3 to pass through is opened on the bracket body 2, and the restraining groove 21 is opened on the first side surface 22 of the bracket body 2;

[0219] The cover sheet 4 is movably matched with the first side surface 22 and has an open position for opening the restraining groove 21 and a corresponding closed position;

[0220] The elastic member 5 is mounted on the cover plate 4 and moves with the cover plate 4 . The elastic member 5 has a self-locking state in which it is deformed toward the cover plate 4 under the pressure of the arch wire 3 and a free state in which it is away from the cover plate 4 .

[0221] The elastic member 5 in the self-locking state can maintain a continuous tightening effect on the arch wire 3, thereby maintaining the fitting state between the arch wire 3 and the constraint groove 21, and realizing the expression of the preset correction data of the bracket.

[0222] For specific implementation methods, see the attached Figure 8 To Attachment Fig.12 , Attachment Fig.30 To Attachment Fig.33 And attached Fig.38 To Attachment Fig.41 As shown, the cover sheet 4 is retracted inwardly toward the side of the net bottom 1 to form a release space 414, and at least a part of the elastic member 5 in the self-locking state is retracted into the release space 414. The elastic member 5 includes:

[0223] A connecting portion 51 connected to the cover sheet 4 and moving with the cover sheet 4;

[0224] The working portion 52 is connected to the connecting portion 51 and deforms itself to achieve a free state and a self-locking state. When the cover sheet 4 is in the open position, the bracket body 2 closes the release space 414 (depending on the size and matching of the cover sheet 4 and the bracket body 2, the bracket body 2 may not completely close the release space 114, for example ... Fig.23 In the figure, the release space 414 on the right side of the cover plate 4 is exposed to the outside), the cover plate 4 is in the closed position, the release space 414 is connected to the constraint groove 21, and the working part 52 extends into the constraint groove 21 through the release space 414.

[0225] Reference Figure 5 To Attachment Fig.41 In the various embodiments shown, the present application also discloses an active self-locking bracket, comprising:

[0226] The mesh bottom 1 is used for bonding with the tooth surface at the corresponding position;

[0227] The bracket body 2 is connected to the mesh bottom 1, and is provided with a positioning groove 23 and a restraining groove 21 for the archwire 3 to pass through, and the restraining groove 21 is open on the first side surface 22 of the bracket body 2;

[0228] The cover sheet 4 is movably matched with the first side surface 22 and has an open position for opening the constraint groove 21 and a corresponding closed position. A working window 412 is provided on a side of the cover sheet 4 facing the net bottom 1;

[0229] An elastic member 5 is mounted on the cover plate 4;

[0230] When the cover plate 4 is in the closed position, the elastic member 5 extends into the restraining groove 21 through the working window 412 .

[0231] The elastic member 5 extends into the constraint groove 21 through the working window 412 , which means that the elastic member 5 at least passes through a portion of the cover plate 4 . This arrangement can effectively improve the connection strength between the cover plate 4 and the elastic member 5 , and synchronize the movement of the elastic member 5 during the movement of the cover plate 4 .

[0232] For specific implementation methods, see the attached Figure 8 To Attachment Fig.12 , Attachment Fig.30 To Attachment Fig.33 And attached Fig.38 To Attachment Fig.41 As shown, the elastic member 5 comprises:

[0233] A connecting portion 51 connected to the cover sheet 4 and moving with the cover sheet 4;

[0234] The working portion 52 is connected to the connecting portion 51 and is U-shaped or W-shaped. The two ends of the opening of the U-shaped or W-shaped are respectively a first positioning end 521 connected to the connecting portion 51 and a second positioning end 522 matched with the cover sheet 4. The first positioning end 521 is connected to the connecting portion 51 through the working window 412. The cover sheet 4 is provided with a restraining cavity 413, which is independently provided with the working window 412, and the second positioning end 522 is accommodated in the restraining cavity 413.

[0235] Reference Figure 5 To Attachment Fig.41 In the various embodiments shown, the present application also discloses a dynamic self-locking bracket, comprising:

[0236] The mesh bottom 1 is used for bonding with the tooth surface at the corresponding position;

[0237] The bracket body 2 is connected to the mesh bottom 1, and is provided with a positioning groove 23 and a restraining groove 21 for the archwire 3 to pass through, and the restraining groove 21 is open on the first side surface 22 of the bracket body 2;

[0238] The cover sheet 4 is movably matched with the first side surface 22 and has an open position for opening the restraining groove 21 and a corresponding closed position;

[0239] The elastic member 5 is mounted on the cover sheet 4 and moves with the cover sheet 4;

[0240] When the cover plate 4 is in the closed position, at least a portion of the elastic member 5 extends into the restraining groove 21 ; when the cover plate 4 is in the open position, at least a portion of the elastic member 5 extends into the positioning groove 23 .

[0241] Different states of the cover piece 4 also require a positioning effect, so as to maintain the cover piece 4 in the corresponding state. In this embodiment, the elastic member 5 can not only be used to constrain the archwire 3, but also constrain the cover piece 4, thereby achieving a combination of functions under the premise of controlling the overall structure volume, effectively improving the utilization rate of components, and reducing the difficulty of production and assembly.

[0242] For specific implementation methods, see the attached Figure 8 To Attachment Fig.12 , Attachment Fig.30 To Attachment Fig.33 And attached Fig.38 To Attachment Fig.41 As shown, the shape of the positioning groove 23 is complementary to the shape of the corresponding part of the elastic member 5. The elastic member 5 includes:

[0243] A connecting portion 51 connected to the cover sheet 4 and moving with the cover sheet 4;

[0244] The working portion 52 is connected to the connecting portion 51 and is used to extend into the constraint groove 21 or the positioning groove 23. The shape of the positioning groove 23 is complementary to that of the working portion 52. A blocking portion 24 is provided between the constraint groove 21 and the positioning groove 23. When the cover sheet 4 is in the open position, the side edge of the working portion 52 close to the constraint groove 21 abuts against the blocking portion 24. When the cover sheet 4 is in the closed position, the side edge of the working portion 52 close to the positioning groove 23 abuts against the blocking portion 24. The working portion 52 has an avoidance state in which it is accommodated in the cover sheet 4 and a working state in which it protrudes out of the cover sheet 4. The blocking portion 24 is set in an arc shape and can drive the working portion 52 to enter the avoidance state. The cover sheet 4 retracts inward toward the side of the net bottom 1 to form a release space 414. At least a part of the elastic member 5 in the avoidance state retracts into the release space 414.

[0245] Reference Figure 5 To Attachment Fig.41 In the various embodiments shown, the present application also discloses an active self-locking bracket, comprising:

[0246] The mesh bottom 1 is used for bonding with the tooth surface at the corresponding position;

[0247] The bracket body 2 is connected to the mesh bottom 1, and is provided with a positioning groove 23 and a restraining groove 21 for the archwire 3 to pass through, and the restraining groove 21 is open on the first side surface 22 of the bracket body 2;

[0248] Cover sheet 4, including

[0249] The sliding seat 41 is movably matched with the first side surface 22 and the top surface is hollow to form an assembly cavity 415;

[0250] A closing plate 42, mounted on the sliding seat 41 and closing the assembly cavity 415;

[0251] The elastic member 5 moves with the cover plate 4 , one end of the elastic member 5 is installed in the assembly cavity 415 , and the other end protrudes from the sliding seat 41 toward the side of the net bottom 1 and can interact with the arch wire 3 .

[0252] The elastic member 5 can be assembled in the cover plate by optimizing the structure of the cover sheet 4. The cover sheet 4 and the elastic member 5 can be pre-assembled to improve production and assembly efficiency, and the cover sheet 4 and the elastic member 5 can be assembled to the bracket body 2 in stages to reduce assembly difficulty. The cover sheet 4 can also provide a stable installation base for the elastic member 5, thereby improving the stability of the movement of the elastic member 5 and further improving the working effect of the active self-locking bracket.

[0253] For specific implementation methods, see the attached Figure 8 To Attachment Fig.12 , Attachment Fig.30 To Attachment Fig.33 And attached Fig.38 To Attachment Fig.41 As shown, the elastic member 5 comprises:

[0254] The connecting portion 51 is fixedly connected to the assembly cavity 415 or clamped in the assembly cavity 415 by the sliding seat 41 and the closing plate 42;

[0255] The working part 52 is connected to the connecting part 51 and protrudes from the side of the sliding seat 41 toward the net bottom 1. An adapting window 411 is provided on the side of the sliding seat 41 facing the net bottom 1, and the working part 52 protrudes toward the net bottom 1 through the adapting window 411. The opening size of the adapting window 411 matches the size of the working part 52. An adapting protrusion 421 is provided on the side of the closing plate 42 facing the net bottom 1, and the adapting protrusion 421 divides the adapting window 411 into a working window 412 and a restraining cavity 413. The working part 52 itself is U-shaped or W-shaped, and the two ends of the U-shaped or W-shaped opening are respectively a first positioning end 521 connected to the connecting part 51 and a second positioning end 522 matched with the cover plate 4. The first positioning end 521 is connected to the connecting part 51 through the working window 412, and the second positioning end 522 is accommodated in the restraining cavity 413. The second positioning end 522 is inserted into the restraining cavity 413 or clamped in the restraining cavity 413 by the sliding seat 41 and the closing plate 42. The side of the closing plate 42 facing away from the net bottom 1 and the side of the sliding seat 41 facing away from the net bottom 1 are smoothly transitioned, and the two are sealed and connected. Slide blocks 416 are provided on both sides of the sliding seat 41, and slideways 25 corresponding to the slide blocks 416 are provided on the bracket body 2, and the assembly cavity 415 is provided between the two slide blocks 416.

[0256] In combination with the above description, it is not difficult to understand that the present application also discloses an orthodontic correction system, including several active self-ligating brackets and archwires 3 in the above technical solutions, and the archwires 3 are used to pass through the constraint grooves 21 of each active self-ligating bracket in sequence.

[0257] It should be noted that the active self-ligating brackets mentioned above are based on the attached Figure 5 To Attachment Fig.41 The embodiments shown are summarized and can be understood as a summary from different technical perspectives, all of which are based on the inventive concept of providing an elastic member 5 on the cover plate 4 to realize active self-locking of the archwire 3 and the restraining groove 21. Therefore, under the premise of no obvious conflict, the technical features of the active self-locking brackets mentioned above can be combined with each other, and the synergistic effect of the technical features will be explained below in conjunction with specific embodiments.

[0258] Reference Figure 5 To Attachment Fig.12 In the first embodiment shown, the cover sheet 4 is slidably matched on the bracket body 2 through the sliders 416 on both sides of the sliding seat 41. The sliding seat 41 of the cover sheet 4, the elastic member 5 and the closing plate 42 of the cover sheet 4 are a sandwich structure, and the sliding seat 41 and the closing plate 42 are mutually buckled to constrain the elastic member 5 in the assembly cavity 415. The elastic member 5 is an integral structure and protrudes toward the net bottom 1 through the working window 412. The working part 52 is W-shaped, and the bottom is smoothly set and used to cooperate with the arch wire 3 or the positioning groove 23. The second positioning end 522 is accommodated in the constraint cavity 413. In this embodiment, the second positioning end 522 and the constraint cavity 413 are movably matched, that is, the second positioning end 522 can move freely in the constraint cavity 413 to release the movement of the elastic member 5 during the deformation process. The working window 412 and the constraint cavity 413 are formed by dividing the adaptation window 411 by the adaptation protrusion 421 on the closing plate 42. Similarly, the side wall of the working window 412 formed by the adapting protrusion 421 is retracted to expand the size of the working window 412, and to a certain extent releases the movement of the first positioning end 521 during the deformation of the elastic member 5. In the accompanying drawings, it is specifically shown that the side wall of the working window 412 formed by the adapting protrusion 421 is inclined, and the side of the side wall close to the bottom of the net is the bottom edge, and the side away from the bottom of the net is the top edge. Compared with the side of the sliding seat used to form the working window 412, the bottom edge is farther away than the top edge.

[0259] In the attached Fig.24 To Attachment Fig.25As shown in , the cover sheet 4 is in the open position, and the working part 52 is in the positioning groove 23, and the shape of the positioning groove 23 is complementary to the working part 52. In the process of the cover sheet 4 moving from the closed position to the start position, the working part 52 needs to pass over the blocking part 24, which is set in an arc and can drive the working part 52 into an avoidance state. The middle position of the bottom of the W-shape of the working part 52 can also provide a weak positioning effect, thereby providing a sense of segmentation for the opening effect of the cover sheet 4 and providing a structural basis for the realization of other functions.

[0260] Attached Fig.13 To Attachment Fig.15 As shown in the figure, the active self-ligating bracket in the first embodiment is adapted to the round arch wire 3 of a smaller size (for example, the diameter of the arch wire in the figure is 0.016 inches, i.e., 0.4 mm). At this time, due to the size relationship, the arch wire 3 and the elastic member 5 do not interact with each other, so the arch wire 3 can move freely in the constraint groove 21, and rapid tooth arrangement can be achieved in the early stage of correction. At this time, the elastic member 5 only plays the role of constraining the relative movement of the cover plate 4.

[0261] Attached Fig.14 To Attachment Fig.19 As shown in the figure, the active self-ligating bracket in the first embodiment and the medium-sized square arch wire 3 (for example, the arch wire size in the figure is 0.016 inches * 0.022 inches, that is, 0.4mm * 0.56mm) are adapted. The arch wire 3 of the size shown in the figure will interact with the working portion 52 of the elastic member 5. Fig.19 As shown in the figure, the dotted line position 61 is the bottom position of the working portion 52 in a free state. It can be clearly observed that the working portion 52 is deformed under the action of the arch wire 3. Accordingly, the arch wire 3 will be pressed against the bottom of the constraint groove 21 under the elastic force of the working portion 52, and a certain degree of active self-locking is achieved while ensuring the accurate expression of the preset correction data of the bracket. As the size of the arch wire 3 increases (for example, the size of the bracket 3 is larger), the arch wire 3 is deformed. Fig. 20 To Attachment Fig.23 As shown in the figure, the deformation of the working part 52 increases, and the elastic force applied to the arch wire increases, which can further enhance the effect of active self-locking. At the same time, due to the force of the arch wire 3, the working part 52 is in a deformed state as a whole, so the stress required for each part of the working part 52 to continue to deform will increase. This feature is particularly obvious in the cooperation between the working part 52 and the blocking part 24. Fig.18 The force required to drive the cover plate 4 from the closed position to the open position is significantly greater than that required in the attached Fig.15 The force required to drive the cover piece 4 from the closed position to the open position. That is, the greater the deformation of the working part 52 of the elastic member 5, the greater the opening torque of the cover piece 4, thereby ensuring the safety of the bracket under high stress working conditions and avoiding the cover piece 4 from being accidentally unlocked. Fig. 22 The same applies.

[0262] Attached Fig. 20 To Attachment Fig.23 As shown in the figure, the active self-ligating bracket in the first embodiment is adapted to the square arch wire 3 of a larger size (for example, the arch wire size in the figure is 0.019 inches*0.025 inches, i.e., 0.48 mm*0.64 mm). The arch wire 3 of the size shown in the figure will produce a stronger interaction with the working portion 52 of the elastic member 5. Fig.23 As shown in FIG. 6 , the dotted line position 61 is the bottom position of the working portion 52 in a free state, and the dotted line position 62 is the attachment Fig.19 From the position of the bottom of the working portion 52 in the figure, it can be clearly observed that the working portion 52 produces a greater deformation under the action of the arch wire 3. Accordingly, the arch wire 3 will be closer to the bottom of the constraint groove 21 under the elastic force of the working portion 52, thereby achieving further active self-locking. It can be observed that in addition to the change in the distance between the bottom of the working portion 52 and the bottom of the constraint groove 21, there are also changes in the shape of the working portion 52. This includes the U-shape at the bottom of the working portion 52 becoming flatter, the position of the first positioning end 521 in the working window 412 changing, and the position of the second positioning end 522 in the constraint cavity 413 changing.

[0263] Reference Fig.26 To Attachment Fig.33 In the second embodiment shown, the elastic member 5 is an integral structure and the working portion 52 is W-shaped. Compared with the first embodiment, the biggest difference in this embodiment is the matching mode of the second positioning end 522 and the cover plate 4. In the first embodiment, the second positioning end 522 and the constraint cavity 413 are freely matched, and in this embodiment, the second positioning end 522 is clamped by the closing plate 42 and the sliding seat 41. The second positioning end 522 extends from the constraint cavity 413 to the top of the closing plate 42 and / or the sliding seat 41. The advantage of this setting is that it can improve the constraint effect of the second positioning end 522 and avoid the second positioning end 522 from slipping out of the constraint cavity 413 due to the deformation of the working portion 52. On the other hand, the assembly of the second positioning end 522 can be realized synchronously with the assembly of the closing plate 42 and the sliding seat 41. For example, when the closing plate 42 and the sliding seat 41 adopt a welding process, the connection of the second positioning end 522, the sliding seat 41 and the closing plate 42 can be realized by one welding, which improves the strength while reducing the difficulty of the process and process treatment.

[0264] Reference Fig.34 To Attachment Fig.41The third embodiment shown, compared with the first embodiment, has the biggest difference that the working portion 52 of the elastic member 5 is U-shaped, and the positioning groove 23 is also modified to be U-shaped accordingly. The advantage of this arrangement is that the contact area between the working portion 52 and the arch wire 3 is larger, and the force can be applied to the arch wire 3 more stably to achieve accurate expression of the preset correction data of the bracket and active self-locking.

[0265] The above embodiments also have certain commonalities, for example, the length of the working part in the constraint groove in the free state accounts for 10% to 35% of the total depth of the constraint groove. The length of the working part in the constraint groove in the working state accounts for 2% to 20% of the total depth of the constraint groove. In the dimensional relationship shown in the accompanying drawings, the distance between the bottom of the working part in the free state and the bottom of the constraint groove is 0.020 inches, that is, 0.508 mm. That is, the arch wire smaller than this size will not be constrained by the elastic member, and the arch wire larger than this size will tend to the elastic member to enter the working state. The elastic member of the W-shaped working part can further adapt to the round arch wire through the W-shaped depression.

[0266] The constraint groove is provided with an escape opening for working deformation, which is specifically manifested as the two ends of the groove of the constraint groove retracting to avoid the bottom sides of the working part. In terms of the specific material and processing technology settings, the bracket body and the cover plate can be made of stainless steel or ceramic material, and the molding process can be selected from powder metallurgy, CNC processing or wire cutting and other processing technologies. The elastic part can be made of stainless steel or memory alloy, and the molding process can be selected from stamping, bending, CNC or wire cutting and other processing technologies. In the assembly of the cover plate and the elastic part, the clamping, friction and other methods of size matching can be adopted, the clamping, limiting and other methods of structure matching can also be adopted, and welding, bonding, riveting and other methods can also be selected according to the material. In terms of the size of the elastic part, the elastic part as a whole can be made of a thin plate with a thickness of 0.05 mm to 0.2 mm. In the opening and closing direction of the cover plate, the length of the elastic part matches the cover plate. In the attached figure, the elastic part is slightly shorter than the size of the cover plate, that is, the length of the elastic part is 50% to 98% of the length of the cover plate. In the axial direction of the constraint groove, the length of the elastic member matches the axial length of the constraint groove. In the drawings, the elastic member is slightly shorter than the axial length of the constraint groove, that is, the length of the elastic member is 50% to 98% of the axial length of the constraint groove.

[0267] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. When the technical features in different embodiments are embodied in the same figure, it can be regarded that the figure also discloses the combination examples of the various embodiments involved.

[0268] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. Active self-locking bracket, characterized in that: include: The mesh base is used for bonding with the tooth surface at the corresponding position; A bracket body connected to the net bottom, the bracket body is provided with a positioning groove and a restraining groove for the archwire to pass through, a blocking portion is provided between the restraining groove and the positioning groove, and the restraining groove is open to the first side surface of the bracket body; A cover piece, movably matched with the first side surface and having an open position for opening the constraint groove and a corresponding closed position, the cover piece comprises a sliding seat and a closing plate, the sliding seat movably matched with the first side surface and the top surface is hollow to form an assembly cavity, the sliding seat is provided with an adapting window on a side facing the net bottom, and the closing plate is installed on the sliding seat and closes the assembly cavity; an elastic member, mounted on the cover sheet and moving with the cover sheet, the elastic member comprising a connecting portion moving with the cover sheet and a working portion extending from the sliding seat toward the side of the net bottom, the connecting portion being clamped in the assembly cavity by the sliding seat and the closing plate, and the working portion extending toward the net bottom through the adapting window and interacting with the archwire; When the cover is in the closed position, the working portion extends into the restraining groove, and the side edge of the working portion close to the positioning groove abuts against the blocking portion; When the cover is in the open position, the working portion extends into the positioning groove, and the side edge of the working portion close to the restraining groove abuts against the blocking portion.

2. The active self-ligating bracket according to claim 1, characterized in that: The action sites where the working portion interacts with the arch wire include at least two locations in the movement direction of the cover plate.

3. The active self-ligating bracket according to claim 1, characterized in that: The working portion and the arch wire interact at a position extending in the axial direction of the constraint groove.

4. The active self-ligating bracket according to claim 1, characterized in that: include: The connecting portion is connected to the cover piece and moves with the cover piece; the working portion is connected to the connecting portion, and the working portion has an evasive state accommodated in the cover piece and a working state extending out of the cover piece; when the cover piece is in the open position, the working portion is in the working state.

5. The active self-ligating bracket according to claim 1, characterized in that: The connecting portion is connected to the cover plate and moves with the cover plate; the working portion is U-shaped as a whole, and the two ends of the U-shape respectively cooperate with the connecting portion and the cover plate, the bottom of the U-shape can interact with the arch wire, and the working portion can switch the relative distance of the bottom of the U-shape relative to the bottom of the constraint groove through its own deformation.

6. The active self-ligating bracket according to claim 1, characterized in that: The elastic member has a self-locking state in which it is pressed by the arch wire and deformed toward the cover plate, and a free state in which it is away from the cover plate.

7. An orthodontic correction system, characterized in that: It comprises a plurality of active self-ligating brackets and archwires according to any one of claims 1 to 6, wherein the archwire is used to sequentially pass through the restraining grooves of the active self-ligating brackets.

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