CN213883567U

CN213883567U - Self-ligating bracket

Info

Publication number: CN213883567U
Application number: CN202020606476.0U
Authority: CN
Inventors: 陈正
Original assignee: Third Affiliated Hospital Sun Yat Sen University
Current assignee: Third Affiliated Hospital Sun Yat Sen University
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2021-08-06
Anticipated expiration: 2030-04-20

Abstract

The utility model discloses a self-ligating bracket, including holding in the palm groove main part, lid and elasticity post, should hold in the palm the groove main part and include the archwire groove, establish first main part and second main part on this archwire groove both sides respectively, set up this lid on this first main part, the one end of this elasticity post is fixed in this first main part, and the other end of this elasticity post matches the butt joint lid in order to control opening and shutting of lid, its characterized in that: the first main body part is provided with a locking block matched with the first main body part, the locking block comprises a locking end and a butting end which are opposite, and the locking end faces the arch wire groove and enters the arch wire groove; the locking block is provided with a first through hole which is loosely sleeved with the elastic column to enable the locking end to movably enter and exit the arch wire groove; the outer surface of the first main body part is provided with a second hole, the second hole is connected with a bolt body in a matching way, and the bolt body abuts against the abutting end of the locking block so as to limit the moving range of the locking block. The utility model discloses utilize the locking piece and bolt body cooperation, realize the function of locking the arch wire.

Description

Self-ligating bracket

Technical Field

The utility model relates to a tooth orthodontic treatment equipment field, concretely relates to self-ligating bracket.

Background

Self-ligating brackets are commonly used in orthodontic treatment to move one or more teeth in a patient's dentition from an initial position to a desired position, while archwire ligating brackets are commonly used for applying forces to the teeth toward the desired position for extended periods of time.

However, one problem commonly exists with existing orthodontic brackets: the size of the arch wire is generally smaller than that of the arch wire groove, so that the arch wire is designed to be easily placed into or taken out of the arch wire groove, otherwise, the arch wire with full size is difficult to enter/exit the groove; and the size of the arch wire is smaller than that of the arch wire groove, so that the clearance is inevitably left between the inner wall of the arch wire groove and the arch wire, the accurate expression of the preset data of the bracket is directly influenced, and the treatment course and the effect are influenced.

Accordingly, there has been a desire to improve upon existing self-ligating brackets.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides a self-ligating bracket, it passes through the cooperation of locking piece and bolt body, realizes the locking function to the arch wire, and locks the effect and be more excellent than current product.

The utility model provides a technical scheme that this technical problem adopted is: the utility model provides a self-ligating bracket, includes and holds in the palm groove main part, lid and elasticity post, should hold in the palm the groove main part and include the archwire groove, establish first main part and second main part on this archwire groove both sides respectively, set up this lid on this first main part, the one end of this elasticity post is fixed at this first main part, the other end of this elasticity post matches and docks the lid in order to control opening and shutting of lid, its characterized in that: the first main body part is provided with a locking block matched with the first main body part, the locking block comprises a locking end and a butting end which are opposite, and the locking end faces the arch wire groove and enters the arch wire groove; the locking block is provided with a first through hole which is loosely sleeved with the elastic column to enable the locking end to movably enter and exit the arch wire groove; the outer surface of the first main body part is provided with a second hole, the second hole is connected with a bolt body in a matching way, and the bolt body abuts against the abutting end of the locking block so as to limit the moving range of the locking block. Locking end

Compared with the prior art, the method has the following positive effects:

1. the utility model provides a locking block moving space by arranging the locking block on the bracket main body and utilizing the mutual cooperation of the locking block and the elastic column, and provides locking force for the locking block by utilizing the mutual cooperation of the locking block and the bolt body so as to realize that the locking block locks the arch wire in the arch wire groove;

2. the utility model discloses an elastic column has two functions in maintaining the lid state of opening and shutting and release locking piece space concurrently, and the structure integration nature is better for the activity space of locking piece is enough big and be difficult for dropping.

Furthermore, the first main body part is provided with a groove body for accommodating the locking block, and two ends of the groove body are respectively communicated with the arch wire groove and the second hole. The groove body limits the locking block in the first main body part of the bracket main body, so that the locking block has a certain displacement space in the gingival combining direction.

Specifically, the end surface of the locking end penetrates through and is a part of one side wall of the archwire slot. In other preferred embodiments, the end surface of the locking end penetrates one side wall of the archwire slot and covers the rest of that side wall. The former has simple processing technology, and the latter is stressed more uniformly.

Specifically, the end face of the locking end is an inclined surface, a curved surface, a part of the inclined surface or a part of the curved surface. The end face of the locking end is not limited to a vertical plane but may be of other shapes, primarily to match different shaped archwires.

Specifically, the inclined surface or the curved surface is close to the side wall of the other side of the arch wire groove in the direction from the opening of the arch wire groove to the bottom of the arch wire groove; or the inclined surface or the curved surface is far away from the side wall of the other side of the arch wire groove in the direction from the opening of the arch wire groove to the bottom of the arch wire groove.

Specifically, a part of the end surface of the locking end, which is close to the opening of the archwire slot, is provided with an inclined table top for guiding the archwire.

Furthermore, one side of the groove body corresponding to the cover body is provided with an opening, and the upper surface of the locking block is exposed to the upper surface locking block of the first main body part. The upper opening groove body is convenient to process on one hand, and the locking block is convenient to install on the other hand, so that the processing cost is greatly reduced, and the locking function is more favorably realized.

Specifically, this first main part is equipped with the cell body of holding this locking piece, and the both ends of this cell body communicate respectively the surface of archwire groove and first main part, and the top of supporting of this locking piece is agreed with the joint with the surface of first main part and is formed the second hole jointly, and the bottom in second hole is at least partly by the top of supporting of locking piece and constitutes.

Furthermore, the second hole is provided with an internal thread, and the bolt body is provided with an external thread in a matching manner.

The present invention will be further explained with reference to the drawings and examples.

Drawings

Fig. 1 is a schematic structural diagram of the embodiment.

Fig. 2 is a schematic structural diagram of a lock block of the embodiment.

Fig. 3 is a schematic structural diagram of the decapping body according to the embodiment.

Fig. 4 is a schematic structural diagram of another view angle of the decapping body according to the embodiment.

Detailed Description

Unless otherwise indicated, in the following structural description, the reference frame to mandibular teeth is used to describe orthodontic brackets. Thus, as used herein, terms such as labial, lingual, mesial, distal, occlusal, gingival used to describe orthodontic brackets are relative to a selected frame of reference. However, embodiments of the invention are not limited to the chosen frame of reference and the terms described, as orthodontic brackets may be used on other teeth and other orientations within the oral cavity. For example, orthodontic brackets may also be coupled to the lingual surfaces of teeth and fall within the scope of the present invention. Those skilled in the art will appreciate that when there are variations in the reference frame, the descriptive terms used herein may not be directly applicable. However, embodiments of the invention are intended to be independent of position and orientation within the oral cavity and the relative terms used to describe the embodiments are merely intended to provide an unambiguous explanation of the embodiments in the drawings. Likewise, the relative terms labial, lingual, mesial, distal, occlusal and gingival are in no way intended to limit the invention to a particular position or orientation.

It should be noted that the relative terms labial, lingual, mesial, distal, occlusal and gingival are terms of art for orthodontic treatment. In the case of a lower jaw tooth, the surface of the orthodontic bracket bonded to one labial surface of the tooth may be roughly divided into six surfaces. The face facing the lip is the labial side face of the orthodontic bracket, the face facing the tongue is the lingual side face of the orthodontic bracket, the labial side face is opposite to the lingual side face, and the direction formed by the labial side face and the lingual side face is also called the labial-lingual direction. The surface facing to the occlusal surface of the upper jaw teeth is the occlusal surface of the orthodontic bracket; the surface of the gingival tissue facing the tooth to which it is coupled is the gingival surface of the orthodontic bracket; the occlusal surface is opposite to the gingival surface, and the direction formed by the occlusal surface and the gingival surface is also called the gingival engaging direction. Two surfaces facing adjacent teeth are respectively a mesial surface and a distal surface of the orthodontic bracket. The direction in which the mesial and distal planes are formed is also called the mesial-distal direction.

Examples

As shown in FIGS. 1-4, the present embodiment is a self-ligating bracket that includes a bracket body, a cover body 20, and a resilient post 30.

The bracket main body comprises an arch wire groove 11, a first main body part 13 and a second main body part 15 which are respectively arranged at two sides of the arch wire groove 11, a cover body 20 is arranged on the first main body part 13, the cover body 20 is used for opening or closing the arch wire groove 11, and the end surface of the second main body part 15 facing the first main body part 13 can be abutted against the front end part of the cover body 20 in a closed state, so that the cover body 20 in a state of closing the arch wire groove 11 cannot slip. The surface of the corresponding first main body part 13 of the cover body 20 is provided with a groove 21, the groove 21 is connected with the upper end of the elastic column 30, and the middle parts of the side walls at the two sides of the groove are centered and protruded to form a transition section, so that in the sliding process of the cover body 20, the transition section generates extrusion force on the upper end of the elastic column 30, and the cover body 20 is limited to be opened and closed. The lower end of the elastic column 30 is fixedly connected with the first main body part 13. Specifically, the first body portion 13 is provided with a mounting hole 134, and the lower end of the elastic column 30 is inserted into the mounting hole 134 and is welded and fixed.

The first body portion 13 of the bracket body is provided with an open through slot 132 substantially perpendicular to the archwire slot 11, one end of the open through slot 132 communicates with the outside through the outer surface of the first body portion 13, the other end of the open through slot 132 penetrates through a side wall of one side of the archwire slot 11 to communicate with the archwire slot 11, and one side of the open through slot 132 corresponding to the upper surface of the first body portion 13 is open. The design of the open channel 132 facilitates bracket machining and installation. The bottom of the open channel 132 is partially recessed to form a mounting hole 134, and the mounting hole 134 is matched with the lower end of the elastic column 30 for stabilizing the elastic column 30.

The locking block 50 is received in the open through slot 132, the locking block 50 of the present embodiment is made of a rigid material and has a substantially hexahedral block shape, the two opposite ends of the locking block 50 are respectively a locking end 52 and a butting end 54, the locking end 52 faces the archwire slot 11, the locking end 52 penetrates through the side wall of the archwire slot 11 adjacent to the first body part 13, and the locking end 52 can enter the archwire slot 11. Abutting end 54 faces the outer surface of the first body. One surface of the locking piece 50 corresponding to the cover 20 is an upper surface 58 of the locking piece 50, one surface of the locking piece 50 opposite to the upper surface 58 is a lower surface of the locking piece 50, and the other two surfaces of the locking piece 50 are matched and connected with the two side walls of the open through groove 132. The middle portion of the locking piece 50 is provided with a first through hole 56 penetrating the upper surface 58 and the lower surface thereof, and the first through hole 56 is penetrated by the elastic column 30. The cross-sectional dimension of the first through opening 56 is large enough that the locking piece 50 can move back and forth at least in the gingival engaging direction, i.e. the first through opening 56 is sufficiently loose. In the present embodiment, the material of the locking block 50 is preferably the same as the material of the bracket body, and the material of the bracket body is a conventional material for orthodontic brackets.

The abutting end 54 of the locking piece 50 is engaged with the outer surface of the first main body 13. At the junction, the locking piece 50 and the first body portion 13 are each partially recessed to collectively form a second hole, the second hole is provided with internal threads, the bolt body 40 is provided with external threads, the second hole matches with the butt bolt body 40, and the butt end 54 of the locking piece 50 forms a portion of the bottom of the second hole, thereby at least limiting the movement of the locking piece 50 in the gingival engaging direction.

The portion of the end surface of the locking end 52 near the bottom of the archwire slot 11 is a sloped surface that is closer to the first body portion 13 in the direction from the opening of the archwire slot 11 to the bottom of the archwire slot 11. The inclined plane matches the profile arch wire 60 with an inclined plane.

The self-ligating bracket of the present embodiment is assembled by first mounting the elastic post 30 on the bracket body, specifically, inserting the root of the elastic post 30 into the mounting hole 134 of the first body 13 and fixing the lower end of the elastic post 30; then, the locking block 50 is mounted on the bracket body, specifically, the locking block 50 is placed in the open through groove 132 of the first body portion 13, and the first through hole 56 of the locking block 50 is sleeved with the elastic column 30; finally, the cover body 20 is mounted on the bracket body, specifically, the cover body 20 is correspondingly covered on the first main body portion 13, the cover body 20 slides from the first main body portion 13 to the second main body portion 15, so that the upper end of the elastic column 30 enters the groove 21 of the cover body 20, and the assembly is completed.

The using method of the embodiment is that the cover body 20 is slid to open the archwire slot 11, the archwire 60 has enough space to enter the archwire slot 11 under the avoidance of the locking block 50, the cover body 20 is slid reversely to close the archwire slot 11, the bolt body 40 is in butt joint with the second hole in a matching way, the abutting end 54 of the locking block 50 is abutted, and the locking end 52 of the locking block 50 abuts against the archwire 60 in the archwire slot 11, so that the clearance of the archwire is reduced, and the purpose of accurate correction is achieved.

It should be noted that the embedding degree of the bolt body can be adjusted, the embedding degree is large, the bolt body can tightly support the arch wire, the embedding degree is small, and the arch wire has a little movable space. The correction method is specifically determined according to the correction requirements.

Compared with the prior art, the elastic column is widely sleeved on the locking block of the embodiment, a sufficient arch wire avoiding space is provided for the locking block, the bolt body is installed after the arch wire enters the arch wire groove, the bolt body controls the movable space of the locking block, and therefore the movable space of the arch wire in the arch wire groove is controlled, and the effects of reducing the arch wire clearance and accurately correcting the arch wire are achieved. Compared with the self-ligating bracket in the prior art, the self-ligating bracket has locking force, can realize the limiting and locking of the arch wire in the arch wire groove, and is stable and durable.

In other embodiments, the end surface of the locking end may be planar, suitable for conventional archwires. On the basis, the part of the end surface of the locking end, which is close to the opening of the arch wire groove, is an inclined table top used for guiding the arch wire.

Therefore, the end surface of the locking end can be deformed into other inclined surfaces, curved surfaces or the combination of the inclined surfaces and the straight plane to adapt to the special-shaped arch wires with different shapes. The inclined plane or the curved surface is close to the side wall of the other side of the arch wire groove in the direction from the opening of the arch wire groove to the bottom of the arch wire groove; or the inclined surface or the curved surface is far away from the side wall of the other side of the arch wire groove in the direction from the opening of the arch wire groove to the bottom of the arch wire groove. The locking block is matched with the special-shaped arch wire, so that the clearance of the arch wire groove is effectively controlled, the torque is accurately expressed, and the correction effect is better.

In an embodiment, the end surface of the locking end penetrates and is a part of one side wall of the archwire slot, so designed to facilitate assembly by machining. In other embodiments, the end surface of the locking end penetrates through the side wall of one side of the archwire slot and covers the other part of the side wall, so that the design is favorable for uniformly distributing the locking force of the locking block on the archwire and improving the locking effect.

In an embodiment, the abutting end of the locking block is externally arranged and forms a second hole. In other embodiments, the outer surface of the first main body portion completely forms the second hole, the abutting end of the locking block is arranged in the second hole, and the abutting end of the locking block forms at least a part of the bottom of the second hole. So that the embedding of the bolt body can push the abutting end of the locking block.

Wherein, the elastic column is made of super elastic material such as stainless steel, titanium alloy or nickel titanium alloy or other suitable materials. Further, during assembly, the elastomeric posts are pressed or slid into mounting holes in the bracket body and/or may be secured thereto by various methods including staking, spot welding, laser welding, adhesives, or other suitable methods to prevent relative movement therebetween.

The present invention is not limited to the above embodiment, and various modifications and variations of the present invention are also intended to be included within the scope of the claims and the equivalent technical scope of the present invention if they do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a self-ligating bracket, includes and holds in the palm groove main part, lid and elasticity post, should hold in the palm the groove main part and include the archwire groove, establish first main part and second main part on this archwire groove both sides respectively, set up this lid on this first main part, the one end of this elasticity post is fixed at this first main part, the other end of this elasticity post matches and docks the lid in order to control opening and shutting of lid, its characterized in that: the first main body part is provided with a locking block matched with the first main body part, the locking block comprises a locking end and a butting end which are opposite, and the locking end faces the arch wire groove and enters the arch wire groove; the locking block is provided with a first through hole which is loosely sleeved with the elastic column to enable the locking end to movably enter and exit the arch wire groove; the outer surface of the first main body part is provided with a second hole, the second hole is connected with a bolt body in a matching way, and the bolt body abuts against the abutting end of the locking block so as to limit the moving range of the locking block.

2. The self-ligating bracket of claim 1, wherein: the first main body part is provided with a groove body for accommodating the locking block, and two ends of the groove body are respectively communicated with the arch wire groove and the second hole.

3. The self-ligating bracket of claim 1, wherein: the end face of the locking end penetrates and is a part of one side wall of the archwire slot.

4. The self-ligating bracket of claim 1, wherein: the end face of the locking end penetrates through one side wall of the archwire slot and covers the other part of the side wall.

5. The self-ligating bracket of claim 1, wherein: the end surface of the locking end is an inclined surface, a curved surface, a part of the inclined surface or a part of the curved surface.

6. The self-ligating bracket of claim 5, wherein: the inclined plane or the curved surface is close to the side wall of the other side of the arch wire groove in the direction from the opening of the arch wire groove to the bottom of the arch wire groove; or the inclined surface or the curved surface is far away from the side wall of the other side of the arch wire groove in the direction from the opening of the arch wire groove to the bottom of the arch wire groove.

7. The self-ligating bracket of claim 1, wherein: the part of the end surface of the locking end, which is close to the opening of the arch wire groove, is provided with an inclined table surface for guiding the arch wire.

8. The self-ligating bracket of claim 2, wherein: one side of the groove body corresponding to the cover body is provided with an opening, and the upper surface of the locking block is exposed to the upper surface of the first main body part.