CN212679296U

CN212679296U - Sliding cover type self-ligating bracket with arch wire locking function

Info

Publication number: CN212679296U
Application number: CN202020606293.9U
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: 2021-03-12
Anticipated expiration: 2030-04-20

Abstract

The utility model discloses a sliding closure type self-ligating bracket with arch wire locking function, which comprises a bracket main body, a cover body and an elastic column, wherein a through groove is arranged on the first main body part, a locking block is matched and accommodated in the through groove, the upper surface of the locking block is provided with an upper track, the lower surface of the locking block is provided with a lower track, and two end surfaces of the locking block respectively corresponding to the two ends of the lower track are a locking end and an abutting end of the locking block; the locking end corresponds to the arch wire groove and can move to enter the arch wire groove, and the abutting end corresponds to the outer surface of the first main body part; the locking block is provided with a first through hole penetrating through the upper surface and the lower surface of the locking block, and the elastic column is loosely sleeved by the first through hole so that the locking end can move in and out of the arch wire groove; the outer surface of the first main body part is provided with a second hole, the second hole is in the same direction as the through groove and is communicated with the through groove, the second hole is connected with a bolt body in a matching mode, 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 locking piece and bolt body to provide the locking power for the locking piece to the realization is to the arch wire locking.

Description

Sliding cover type self-ligating bracket with arch wire locking function

Technical Field

The utility model relates to the field of orthodontic treatment equipment for teeth, in particular to a sliding closure type self-ligating bracket with an arch wire locking function.

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 sliding closure formula self-ligating bracket with locking arch wire function, it realizes the locking function to the arch wire through the cooperation of locking piece and bolt body, and the locking effect is more excellent than current product.

The utility model provides a technical scheme that this technical problem adopted is: a sliding cover type self-ligating bracket with an arch wire locking function comprises a bracket main body, a cover body and an elastic column, wherein the bracket main body comprises an arch wire groove, a first main body part and a second main body part which are respectively arranged at two sides of the arch wire groove, the cover body is arranged on the first main body part, one end of the elastic column is fixed on the first main body part, the other end of the elastic column is in butt joint with the cover body in a matching way for controlling the opening and closing of the cover body, the first main body part is provided with a through groove with an upper opening, the through groove penetrates through the side wall of the arch wire groove and the outer surface of the first main body part, a locking block is accommodated in the through groove in a matching way, the upper surface of the locking block is provided with an upper rail, the lower surface of the locking block is provided with a lower rail, the upper rail and the lower rail are in the same direction and correspond to the sliding direction of the cover body, the surface of the cover body, which corresponds to, the bottom of the through groove is provided with a second track groove, and the lower track is matched and butted with the second track groove to ensure that the locking block slides in the through groove of the first main body part; two end faces of the locking block respectively corresponding to two ends of the lower track are a locking end and an abutting end of the locking block; the locking end corresponds to the arch wire groove and can move to enter the arch wire groove, and the abutting end corresponds to the outer surface of the first main body part; the locking block is provided with a first through hole penetrating through the upper surface and the lower surface of the locking block, and the elastic column is loosely sleeved by the first through hole so that the locking end can move in and out of the arch wire groove; the outer surface of the first main body part is provided with a second hole, the second hole is in the same direction as the through groove and is communicated with the through groove, the second hole is connected with a bolt body in a matching mode, and the bolt body abuts against the abutting end of the locking block so as to limit the moving range of the locking block.

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 elastic column of the utility model has two functions of maintaining the opening and closing state of the cover body and releasing the space of the locking block, and has better structural integration, so that the movable space of the locking block is large enough and is not easy to fall off;

3. the utility model discloses a lock piece is equipped with track and lower track, goes up the track and matches the butt joint lid, makes the smooth and easy slip of lid not squint, and lower track matches first main part, makes the smooth and easy slip of lock piece not squint, makes the utility model discloses even there are a plurality of movable assembly, also can combine closely, the structure looses and wholly does not scatter.

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

Specifically, the locking end is beveled, curved, partially beveled, or partially curved. The locking end is not limited to a vertical plane but may be 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 portion of the locking end adjacent the archwire slot opening is provided with a beveled table top for the introduction of an archwire.

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 slide-type self-ligating bracket with an archwire locking function, and comprises a bracket body, a cover body 20 and an elastic 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. Be equipped with recess 21 on the face of the first main part 13 of the correspondence of lid 20, recess 21 is connected with the upper end of elasticity post 30, and the middle part centering arch of the both sides lateral wall of recess forms the changeover portion for at the gliding in-process of lid 20, the changeover portion produces the extrusion force to the upper end of elasticity post 30, makes the lid restriction open and close two kinds of states, the both ends of recess 21 promptly. 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 middle portion of the bottom of the open channel 132 is partially recessed to form a mounting hole 134, and the mounting hole 134 matches the lower end of the elastic column 30 for stabilizing the elastic column 30.

The locking block 50 is accommodated in the open through groove 132 in a matching manner, the locking block 50 of the present embodiment is made of a rigid material, the locking block 50 is roughly divided into six vertical surfaces, two opposite end surfaces of the locking block 50 are respectively a locking end 52 and a butting end 54, the locking end 52 corresponds to the archwire slot 11, the locking end 52 penetrates through a side wall of the archwire slot 11 adjacent to the first main body part 13, and the locking end 52 can move to enter the archwire slot 11. Abutting end 54 corresponds to 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 upper surface of the locking piece 50 is provided with a boss, one group of opposite two sides of the boss form an acute angle to form an upper rail 71, and the stroke direction of the upper rail 71 corresponds to the sliding direction of the cover body 20. The cover body 20 has two groove bodies corresponding to the first main body portion 13, the two groove bodies of the cover body 20 correspond to the upper rails 71 on two sides of the locking block 50, respectively, and the two groove bodies of the cover body 20 are first rail grooves 73. The upper rail 71 is in mating abutment with the first rail groove 73, so that the lid body 20 slides on the first body portion 13.

The lower surface of the locking block 50 is provided with two projections, which are arranged in a mirror image manner, so that the locking block 50 is integrally shaped like a stool, the two projections are lower rails 81 of the locking block 50, and the stroke direction of the lower rails 81 corresponds to the sliding direction of the cover body 20. The bottom of the open through groove 132 is provided with two groove bodies which are arranged in a mirror image manner, the two groove bodies of the open through groove 132 are respectively matched with the two lugs of the locking block, and the two groove bodies of the open through groove 132 are the second track grooves 83. The mating engagement of the lower track 81 with the second track slot 83 allows the lock block 50 to slide within the open channel 132 of the first body portion 13.

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 locking end 52 near the bottom of the archwire slot 11 is a ramp that approaches 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 slide type self-ligating bracket with an archwire locking function of this embodiment is assembled by first mounting the elastic post 30 to the bracket body, specifically, inserting the lower end 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, the lower rail 81 of the locking block 50 is abutted against the second rail groove 83 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 body portion 13, the upper rail 71 of the locking block 50 is abutted against the first rail groove 73 of the cover body 20, the cover body 20 slides from the first body portion 13 to the second 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 locking end may be planar, suitable for conventional archwires. On the basis, the part of the locking end close to the opening of the arch wire groove is an inclined table top used for guiding the arch wire.

It can be seen that the locking end can be deformed into other slopes, curved surfaces or a combination thereof with a straight plane to accommodate shaped archwires of 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 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 locking end penetrates through one side wall 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 sliding closure formula self-ligating bracket with locking arch wire function, includes and holds in the palm groove main part, lid and elastic column holds in the palm the groove main part and includes the arch wire groove, establishes first main part and the second main part on this arch wire groove both sides respectively, sets up this lid on this first main part, and the one end of this elastic column is fixed in this first main part, and the other end of this elastic column matches the butt joint lid in order to be used for controlling opening and shutting of lid, its characterized in that: the first main body part is provided with a through groove with an upper opening, the through groove penetrates through the side wall of the arch wire groove and the outer surface of the first main body part, a locking block is accommodated in the through groove in a matched mode, the upper surface of the locking block is provided with an upper rail, the lower surface of the locking block is provided with a lower rail, the upper rail and the lower rail are in the same direction and correspond to the sliding direction of the cover body, the surface of the cover body corresponding to the first main body part is provided with a first rail groove matched with the upper rail, the upper rail is in matched butt joint with the first rail groove to enable the cover body to slide on the first main body part, the bottom of the through groove is provided with a second rail groove, and the lower rail is in matched butt joint with the second; two end faces of the locking block respectively corresponding to two ends of the lower track are a locking end and an abutting end of the locking block; the locking end corresponds to the arch wire groove and can move to enter the arch wire groove, and the abutting end corresponds to the outer surface of the first main body part; the locking block is provided with a first through hole penetrating through the upper surface and the lower surface of the locking block, and the elastic column is loosely sleeved by the first through hole so that the locking end can move in and out of the arch wire groove; the outer surface of the first main body part is provided with a second hole, the second hole is in the same direction as the through groove and is communicated with the through groove, the second hole is connected with a bolt body in a matching mode, 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 slide-type self-ligating bracket with an archwire locking function of claim 1, wherein: the locking end penetrates and is a part of a side wall of the archwire slot.

3. The slide-type self-ligating bracket with an archwire locking function of claim 1, wherein: the locking end penetrates one side wall of the archwire slot and covers the other portion of that side wall.

4. The slide-type self-ligating bracket with an archwire locking function of claim 1, wherein: the locking end is an inclined plane, a curved surface, a part of which is an inclined plane or a part of which is a curved surface.

5. The slide-type self-ligating bracket with an archwire locking function of claim 4, 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.

6. The slide-type self-ligating bracket with an archwire locking function of claim 1, wherein: the part of the locking end close to the opening of the arch wire groove is provided with an inclined table top for leading in the arch wire.

7. The slide-type self-ligating bracket with an archwire locking function of any one of claims 1 to 6, wherein: the second hole is provided with an internal thread, and the bolt body is provided with an external thread in a matching manner.