阅读说明：本技术 一种牵引件易打开的正畸器具 (Orthodontic appliance with easily-opened traction piece ) 是由 张钦辉 徐梓恩 吉利 于 2020-05-12 设计创作，主要内容包括：本发明公开了一种牵引件易打开的正畸器具,包括主体,所述主体具有弓丝槽,所述主体设有可活动的牵引件,所述牵引件包含牵引部分,所述牵引件能通过活动在使用位置和非使用位置间转换,所述牵引件位于使用位置时,所述牵引部分可供牵引；所述牵引件位于非使用位置时,所述牵引部分不可供牵引；所述主体上设有定位结构,用于引导工具将所述牵引件从非使用位置转为使用位置。本申请在主体或者牵引件上设置定位结构,使得医生能够使用牙科工具快速准确地定位牵引件继而将其打开,能够提升矫治效率,缩短医生的工作时长。(The invention discloses an orthodontic appliance with an easily opened traction piece, which comprises a main body, wherein the main body is provided with an arch wire groove, the main body is provided with a movable traction piece, the traction piece comprises a traction part, the traction piece can be switched between a use position and a non-use position through movement, and when the traction piece is positioned at the use position, the traction part can be used for traction; when the traction piece is positioned at the non-use position, the traction part can not be used for traction; the main body is provided with a positioning structure for guiding a tool to convert the traction piece from the non-use position to the use position. This application sets up location structure in the main part or on pulling the piece for the doctor can use the quick accurate location of dental tool to pull the piece and then open it, can promote and correct efficiency, shortens doctor's operating duration.)

1. An orthodontic appliance comprising a body having an archwire slot, characterized in that: the main body is provided with a movable traction piece, the traction piece comprises a traction part, the traction piece can be switched between a use position and a non-use position through movement, and when the traction piece is located at the use position, the traction part can be used for traction; when the traction piece is positioned at the non-use position, the traction part can not be used for traction; the main body is provided with a positioning structure for guiding a tool to convert the traction piece from the non-use position to the use position.

2. The orthodontic appliance of claim 1 wherein said positioning structure has a slide path extending in the direction of said pull.

3. The orthodontic appliance of claim 2 wherein said positioning structure has a stop wall.

4. The orthodontic appliance of claim 1 wherein said locating structure is disposed on a distal side of said body, said locating structure being in communication with said archwire slot.

5. The orthodontic appliance of claim 1 wherein said locating structure has at least one of indentations, recesses, holes, slits, protrusions.

6. The orthodontic appliance of claim 2 wherein said pull member has opposite first and second ends, said second end being connected to said body, said locating structure being provided on said body adjacent said first end.

7. The orthodontic appliance of claim 6 wherein said body is positioned on opposite sides of said labial and lingual sides of said first end, and said alignment structure is provided on at least one of said labial and lingual sides.

8. The orthodontic appliance of claim 7 wherein said locating structure is provided on said lingual side, said locating structure is a notch, and said sliding path is a side wall of said notch, said side wall sloping in a lingual-labial direction from said archwire slot to said retractor.

9. The orthodontic appliance of claim 7 wherein said locating structure is provided in said labial side, said locating structure being a notch, a side wall of said notch including an internal recess, said recess sloping in a labial-lingual direction from a distal direction to a proximal direction.

10. The orthodontic appliance according to claim 1, wherein the pulling member has a locking portion, the pulling member is provided with an elastic member, the locking portion is locked with the main body when the pulling member is in the non-use position, the pulling member drives the elastic member to deform when being stressed, the locking portion is unlocked from the main body, and then the pulling member is switched to the use position under the reset force of the elastic member.

11. The orthodontic appliance of any one of claims 1 to 10 wherein the outer surface of the body is rounded.

Technical Field

The invention relates to the technical field of orthodontic appliances, in particular to an orthodontic appliance.

Background

At present, aiming at the problems of teeth or faces such as crowding of teeth, bucking of teeth, uneven arrangement of teeth, malocclusion and the like, an orthodontist treats a patient by adopting an orthodontic appliance, and orthodontic appliances such as a bracket, a buccal tube and the like are main components of the orthodontic treatment appliance. In conventional orthodontic treatment, an orthodontist affixes brackets to a patient's teeth and places an archwire into the archwire slots of the brackets, the archwire applying corrective forces through the brackets to the teeth to move the teeth into the correct positions. In order to increase the speed of tooth movement and to move the teeth in a predetermined direction, a traction tool such as a spring or an elastic band is attached to the traction tool provided to the bracket and/or the buccal tube.

This company has disclosed in prior application CN110584810A a buccal surface pipe that pulls piece can hide, and this buccal surface pipe includes bottom plate and main part, is equipped with the piece that pulls that can take place to remove or rotate relatively it in the main part, pulls the piece and can hide to the accommodation space of main part when not using, can effectively avoid whole treatment cycle when need not using the piece that pulls, pulls the stimulation and the damage of piece to patient's oral mucosa. As the buccal tube is used for being adhered to the back teeth of the molars and the like of a patient, in the actual use process, a doctor cannot observe the buccal tube and cannot observe the traction piece on the buccal tube due to the blocking of a cheek, the traction piece is very small in size and is about 2-3mm long, the traction piece is positioned directly by a tool according to hand feeling and is opened from a non-use position to a use position, the operation is very difficult, and the tool is very easy to scratch the oral cavity of the patient in the opening process. In response to this problem, there is a need to provide an orthodontic appliance that can easily open the pulling member.

Disclosure of Invention

In view of the above technical problems, the present invention provides an orthodontic appliance with an easily openable pulling member.

The technical scheme adopted by the invention for solving the technical problem is as follows:

an orthodontic appliance comprising a body having an archwire slot, the body being provided with a movable puller, the puller including a pulling portion, the puller being movable between an in-use position and a non-use position, the pulling portion being available for pulling when the puller is in the in-use position; when the traction piece is positioned at the non-use position, the traction part can not be used for traction; the main body is provided with a positioning structure for guiding a tool to convert the traction piece from the non-use position to the use position. If the orthodontic appliance is adhered to the posterior teeth of a patient, such as molars, the cheek can be shielded, a doctor cannot see the orthodontic appliance, and the traction piece is required to be converted into a use position, so that the orthodontic appliance is difficult to operate in the actual process, the traction piece can be searched and opened only by touching with a tool, on one hand, alignment is difficult, the trial and error are required for a great number of times, and on the other hand, the trial and error process easily injures the oral cavity of the patient; if the orthodontic appliance is adhered to the front teeth of a patient, a doctor can observe the orthodontic appliance, but because the orthodontic appliance is very small in size, the operation is still difficult to perform by accurately positioning the traction piece by using a dental tool and opening the traction piece to a use position, the time is long, the working time of the doctor is shortened for improving the correction efficiency, and the positioning structure is arranged on the main body or the traction piece, so that the doctor can quickly and accurately find and open the traction piece by using the dental tool through the positioning structure guiding tool.

In some preferred embodiments, the positioning structure has a sliding path extending in the direction of the traction element. The tool can slide along the sliding path in the direction of the traction member, and then force the traction member to convert the traction member from the non-use position to the use position. The sliding path is arranged on the positioning structure, so that the situation that the tool slides to the outer surface of the orthodontic appliance from the positioning structure in the process of opening the traction piece after being positioned to the positioning structure, and then the oral cavity of a patient is scratched can be prevented. The most common dental tool is a probe which is provided with two sharp working ends, one end of the probe is bent in a circular arc shape, and the other end of the probe is bent in a square shape. The operation mode can be two, firstly, a sliding mode, in which a tool slides to the traction piece directly along a sliding path, and force is continuously applied to the traction piece in the sliding direction to hook out the traction piece; secondly, in a rotating mode, after the tool slides to the end point of the path along the sliding path, the tool is rotated and abuts against the traction piece to be ejected. In particular, the sliding path may be a hole-like or tubular rail, or may be a wall along which the tool slides.

In some further preferred embodiments, the positioning structure has a stop wall, which can be understood as the end of the sliding path, along which the tool slides until it stops sliding against the stop wall, and turning the tool can push the pulling member open. Since orthodontic appliances are used by being stuck to the teeth of a patient, a commonly used dental tool is a dental probe having two working ends, which are usually sharp, if the dental probe is used to transfer the pulling member to the use position, if the first sliding manner is adopted, the dental probe is easy to scratch the oral cavity of the patient when a new hand is operating, such as applying too much force or sliding the hand during the application of force; in order to avoid scratching the oral cavity of a patient, the traction piece is opened in a second rotating mode, the stop wall is arranged on the positioning structure, a doctor can accurately find the stop point for starting rotation, the tool stops sliding when sliding along the sliding path until abutting against the stop wall, the tool is rotated to push the traction piece open, and the tool does not need to use a special tool and can use a conventional dental probe. By adopting the mode to open the traction hook, the problem that the oral cavity of a patient is scratched due to the fact that the traction piece is directly opened by sliding of a tool can be effectively avoided.

In some preferred embodiments, the positioning structure is disposed on a distal side of the body, the positioning structure being in communication with the archwire slot. Locate location structure the far from medial side of main part enables the doctor to operate more smoothly, and when dental tool stretches location structure department like the probe, the doctor can open towards the direction application of force in the nearly middle of, and the application of force direction is more smoothly changed in the operation. The positioning structure is in communication with the archwire slot which makes positioning easier, and the surgeon can generally judge the port of the archwire slot based on the orientation of the visible archwire, and can then more quickly position the tool to the positioning structure.

In some preferred embodiments, the positioning structure has at least one of an indentation, a depression, a hole, a slit, a protrusion. The positioning structure can be other conventional structures capable of being quickly positioned, and when a doctor places the dental tool on the orthodontic appliance, the positioning structure can be sensed by the tool, the traction piece is positioned through the positioning structure, and then the traction piece is opened to the using position.

In some preferred embodiments, the pulling member has opposite first and second ends, the second end is connected to the body, and the positioning structure is disposed on the body near the first end.

In some preferred embodiments, the first end is movable and/or rotatable relative to the body.

In some further preferred embodiments, the parts of the main body on both sides of the labial and lingual sides of the first end are labial side and lingual side, respectively, and the positioning structure is provided on at least one of the labial side and the lingual side. The positioning structure can be arranged on the lip side part, the positioning structure can be arranged on the tongue side part, and the positioning structure can be arranged on the lip side part and the tongue side part simultaneously.

In some embodiments, the positioning structure is disposed on the lingual side, the positioning structure is a notch, and the sliding path is a side wall of the notch that slopes in a lingual-labial direction from the archwire slot to the retractor. The lateral wall of breach sets up like this, and when the doctor along location structure application of force, the instrument can not slided from orthodontic appliances, leads to fish tail patient's oral cavity, and the instrument can move along location structure extremely draw on the piece.

In other specific embodiments, the positioning structure is disposed on the side of the lip, the positioning structure is a notch, and the side wall of the notch comprises an inward concave portion which is inclined from the distal direction to the proximal direction along the lip-tongue direction. The concave part enables the tool to be positioned on the positioning structure, when a doctor applies force along the positioning structure, the tool cannot slide away from an orthodontic appliance, the oral cavity of a patient can be prevented from being scratched, and the tool can move to the traction piece along the positioning structure.

In some preferred embodiments, the traction member has a locking portion, the traction member is provided with an elastic member, when the traction member is in the non-use position, the locking portion is locked with the main body, the traction member drives the elastic member to deform when being stressed, the locking portion is unlocked with the main body, and then the traction member is switched to the use position under the action of the reset force of the elastic member. When the traction piece needs to be opened, force is applied to the traction piece, the traction piece extrudes or stretches the elastic piece to deform, so that the locking part is unlocked with the main body, the elastic piece is preset to be matched with the state that the traction piece is located at the use position, and the traction piece is converted to the use state under the action of the reset force of the elastic piece after being unlocked. When the traction piece needs to be closed again, force is applied to the traction piece, and the traction piece drives the elastic piece to deform until the locking part is locked with the main body.

In other preferred embodiments, an elastic member is arranged on the traction member, the positioning structure has a force receiving portion and an engaging portion which are linked, when the engaging portion is locked with the traction member, the traction member is in a non-use position, when the force receiving portion is subjected to a force, the engaging portion is unlocked from the traction member, and the traction member is switched to a use position under the action of a reset force of the elastic member. The traction piece is fixed at a non-use position through the clamping part, when the traction piece needs to be opened, a tool is used for applying force to the stress part to drive the clamping part to move, the locking with the traction piece is unlocked, and the traction piece is opened under the action of a preset elastic piece on the traction piece.

In some preferred embodiments, the outer surface of the body is smoothly curved. The surface of main part is slick and sly curved surface form, can make main part and patient's oral cavity slick and sly contact on the one hand, avoids wearing and tearing patient's oral cavity to the teratocardiology utensil, and on the other hand, the surface circular arc curved surface form of main part for the doctor uses the instrument to fix a position location structure more easily, realizes pulling the quick location of piece and opening.

Compared with the prior art, the method has the following positive effects: the invention provides an orthodontic appliance, which comprises a main body, wherein the main body is provided with an arch wire groove, the main body is provided with a movable traction piece, the traction piece comprises a traction part, the traction piece can be switched between a use position and a non-use position through movement, and the traction part can be used for traction when the traction piece is positioned at the use position; when the traction piece is positioned at the non-use position, the traction part can not be used for traction; the main body is provided with a positioning structure for guiding a tool to convert the traction piece from the non-use position to the use position. This application sets up location structure in the main part or on pulling the piece for the doctor can use the quick accurate location of dental tool to pull the piece and then open it, can promote and correct efficiency, shortens doctor's operating duration.

The invention is further illustrated by the following figures and examples.

Drawings

Fig. 1 is a schematic view of a mandibular dental reference system.

Fig. 2 is a schematic configuration diagram of a non-use position of the pulling member of the orthodontic appliance of example 1.

Fig. 3 is a schematic view showing a structure of a use position of a pulling member of the orthodontic appliance of embodiment 1.

Fig. 4 is a left side view of the orthodontic appliance of embodiment 1.

Fig. 5 is a schematic configuration view of a non-use position of the pulling member of the orthodontic appliance of embodiment 2.

Fig. 6 is a schematic view showing a structure of a use position of a pulling member of the orthodontic appliance of embodiment 2.

Fig. 7 is a schematic configuration view of a non-use position of a pulling member of the orthodontic appliance of embodiment 3.

Fig. 8 is a schematic view showing a structure of a use position of a pulling member of the orthodontic appliance of embodiment 3.

Fig. 9 is a schematic configuration diagram of a non-use position of the pulling member of the orthodontic appliance of embodiment 4.

Fig. 10 is a schematic view showing a structure of a use position of a pulling member of the orthodontic appliance of embodiment 4.

Fig. 11 is a schematic view of the orthodontic appliance of example 4 in which the main body is made transparent.

Fig. 12 is a rear view of the orthodontic appliance of example 4.

Fig. 13 is a schematic configuration view of a non-use position of the pulling member of the orthodontic appliance of example 5.

Fig. 14 is a schematic view showing a structure of a use position of a pulling member of the orthodontic appliance of embodiment 5.

Fig. 15 is a schematic configuration view of a non-use position of a pulling member of the orthodontic appliance of example 6.

Fig. 16 is a schematic view showing a structure of a use position of a pulling member of the orthodontic appliance of embodiment 6.

Fig. 17 is a schematic configuration view of a non-use position of the pulling member of the orthodontic appliance of embodiment 7.

Fig. 18 is a schematic view showing a structure of a use position of a pulling member of the orthodontic appliance of embodiment 7.

Fig. 19 is a schematic view of another angle of the orthodontic appliance of example 7.

Fig. 20 is an exploded view of a partial structure of the orthodontic appliance of example 7.

Detailed Description

Unless otherwise indicated, in the following structural description, a reference frame to mandibular teeth is used to describe the adhesive positioning device. Thus, as used herein, terms such as labial, lingual, mesial, distal, mesial, gingival, and dental used to describe the adhesive locating device are relative to a selected frame of reference. However, embodiments of the present invention are not limited to the chosen frame of reference and the described terminology, as the adhesive locating device may be used with other teeth and other orientations within the oral cavity. For example, an adhesive positioning device may also be coupled to the lingual surface of the teeth and fall within the scope of the invention. Those skilled in the art will appreciate that there are variations in the frame of reference that may not be directly referenced to the descriptive terms used herein. 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, mesial, gingival and dental in no way limit the invention to a particular position or orientation.

It is to be noted that the relative terms labial, lingual, mesial, distal, mesial, gingival and orthodontic terms are used in the industry. Referring to fig. 1, the surface of a tooth can be roughly divided into six surfaces, taking a certain tooth in the lower right jaw area as an example. The surface of the tooth that is to be occlusal with the maxillary tooth is the end surface or the tooth surface, and the end where the tooth surface is located is called the tooth end; the surface of the tooth connected with the attached gingival tissue is the gingival surface, and the end where the gingival surface is located is the gingival end; the tooth surface is opposite to the gum, and the direction in which the tooth surface is formed with the gum is also called the gingival direction. The surface of the tooth facing the lips is the labial surface, the side where the labial surface is located is called the labial surface, the surface of the tooth facing the tongue is the lingual surface, the side where the lingual surface is located is called the lingual surface, the labial surface and the lingual surface are opposed to each other, and the direction in which the labial surface and the lingual surface are formed is also called the labial-lingual direction. The two surfaces of the tooth that contact adjacent teeth are the mesial and distal surfaces, respectively, and are distinguished by the distance from the middle, the mesial surface being closer to the central incisor and the distal surface being further from the central incisor, the direction formed by the two being also called the mesial-distal direction, or the mesial-distal direction.

Example 1:

referring to fig. 2 to 4, fig. 2 is a structural view of a non-use position of a traction member of the orthodontic appliance of example 1, fig. 3 is a structural view of a use position of a traction member of the orthodontic appliance of example 1, and fig. 4 is a left side view of the orthodontic appliance of example 1, this embodiment provides an orthodontic appliance including a body 110, the body 110 having an archwire slot 111, the archwire slot 111 for receiving an archwire 140, the body 110 being provided with a movable traction member 120, the traction member 120 being movable between a use position and a non-use position, the traction portion being trailable when the traction member 120 is in the use position; when the pulling member 120 is in the non-use position, the pulling portion is not available for pulling. The body 110 is provided with a positioning structure 130 for guiding a tool to transfer the pulling member 120 from the non-use position to the use position. The positioning structure 130 has any one of a notch, a recess, a hole, a slit, and a protrusion. The positioning structure may be other conventional quick-positionable structures, such that when the practitioner places the dental tool on the orthodontic appliance, the positioning structure 130 is sensed by the practitioner, the practitioner finds the tool in an open position via the positioning structure 130, and then opens the retractor 120 to the use position. In this embodiment, the positioning structure 130 is disposed on the main body 110, and the positioning structure 130 is a notch.

If the orthodontic appliance is a buccal tube and is adhered to the posterior teeth such as molars of a patient, the cheek can be shielded, a doctor cannot see the orthodontic appliance, and the pulling piece 120 is required to be opened to the using position, so that the operation is difficult in the actual process; if the orthodontic appliance is a bracket, which is adhered to the anterior teeth of a patient, the doctor can observe the orthodontic appliance, but because the orthodontic appliance has a very small size, it is still difficult to accurately position and open the pulling member 120, which takes a long time, and in order to improve the efficiency of correction and shorten the working time of the doctor, the positioning structure 130 is provided on the body 110 or the pulling member 120, so that the doctor can quickly and accurately position and open the pulling member 120 using a dental tool.

The pulling member 120 has a first end 121 and a second end, the second end is not shown in the drawings, the second end is rotatably connected to the main body 110, and the positioning structure 130 is disposed on the main body 110 near the first end 121. The positioning structure 130 is disposed at the distal side of the main body 110, and the positioning structure 130 is communicated with the archwire slot 111. Locate the location structure the distal side of main part enables the doctor to operate more smoothly, and when dental tool such as probe extended to location structure 130 department, the doctor can open towards the mid-range direction application of force the piece 120 that pulls, the application of force direction is more smoothly more easily operated. Communicating the positioning feature 130 with the archwire slot 111 makes it easier for the surgeon to use a tool to position the positioning feature 130. In the test process, after the positioning structure 130 is communicated with the arch wire groove 111, an ordinary person operates for 1-3 times, and then the probe can be used for accurately positioning the positioning structure 130 and opening the traction piece 120.

The positioning structure 130 has a sliding path extending in the direction of the pulling member 120, in this embodiment, the positioning structure 130 is a notch, the sliding path is a side wall 131 of the positioning structure 130, and the tool can slide along the side wall 131 toward the pulling member 120, and then apply a force to the pulling member 120 to change the pulling member from the non-use position to the use position. The sliding path is arranged on the positioning structure 130, so that the tool can be prevented from sliding to the outer surface of the orthodontic appliance from the positioning structure in the process of opening the traction piece after being positioned to the positioning structure, and then scratching the oral cavity of a patient.

Referring to fig. 4, the parts of the main body 110 on both sides of the labial and lingual sides of the first end 121 are a labial side portion 113 and a lingual side portion 112, respectively, and the positioning structure 130 is disposed on at least one of the labial side portion 113 and the lingual side portion 112. In this embodiment, the positioning structure 130 is disposed on the tongue side portion 112, the positioning structure 130 is a notch, and a side wall 131 of the notch (i.e., the sliding path) is inclined from the archwire slot 111 to the pulling member 120 along the tongue-lip direction. The sidewall 131 of the indentation is configured such that when a surgeon applies force along the alignment structure 130, the tool will not slip off the orthodontic appliance, causing a laceration in the mouth of the patient, and the tool will move along the alignment structure 130 onto the pulling member 120. As can be seen from the figures, the lip side 113 is provided with a space for the movement of the tool in order not to obstruct the tool from opening the pulling member 120, and the edge of the lip side 113 is rounded.

The outer surface of the body 110 is a smooth curved surface. The outer surface of the main body 110 is a smooth curved surface, on one hand, the main body 110 can be in smooth contact with the oral cavity of a patient, so that the oral cavity of the patient is prevented from being abraded by an orthodontics appliance, on the other hand, the outer surface of the main body 110 is a circular arc curved surface, so that a doctor can easily use a tool to position the positioning structure 130, and the traction piece 120 can be quickly positioned and opened, and if other bulges or complex structures exist on the outer surface of the main body 110, the positioning of the traction piece 120 is difficult to realize.

Example 2:

referring to fig. 5 to 6, the present embodiment provides an orthodontic appliance having substantially the same structure as in embodiment 1 except that: the parts of the main body 210 on both sides of the lip and tongue of the first end 221 are the labial part and the lingual part 213, respectively, the orthodontic appliance includes a positioning structure 230, the positioning structure 230 is disposed on the lingual part 213, the positioning structure 230 is disposed on the distal side of the main body 210, the positioning structure 230 is a notch, and the side wall of the notch is inclined from the archwire slot 211 to the pulling member 220 along the lingual-labial direction; the first end 221 is provided with a recess 231, and when the tool is positioned at the first positioning structure 230, the tool can slide to the recess 231 by applying force continuously, so that the tool can be prevented from sliding to the outer side of the orthodontic appliance, and the traction piece 220 can be opened by applying force continuously.

Example 3:

referring to fig. 7 to 8, the present embodiment provides an orthodontic appliance having substantially the same structure as in embodiment 1 except that: location structure 330 is located lip lateral part 312, location structure 330 is the breach, the lateral wall of breach contains the slip path, can supply the instrument to slide along it, the lateral wall of breach still contains interior recess 331, interior recess 331 inclines to nearly well direction along lip-tongue direction from far away well direction, in this embodiment, the nearly middle-end of interior recess 331 is the stall wall promptly, can prevent on the one hand that the instrument from sliding away from orthodontic appliances when sliding along the slip path, avoids fish tail patient's oral cavity, and on the other hand, when the instrument slide to when the nearly middle-end of interior recess 331, the instrument stops sliding, and at this moment, the rotatable or swing instrument of doctor utilizes the instrument will draw a piece to push away. The notch is in communication with the archwire slot 311, and a surgeon can determine approximately the opening of the notch based on the strike of the archwire, and position the tool at that location very conveniently and quickly.

Example 4:

referring to fig. 9 to 12, the present embodiment provides an orthodontic appliance, including a body 410, the body 410 having an archwire slot 411, the body 410 being provided with a movable pulling member 420, the pulling member 420 including a pulling portion, the pulling member 420 being movable between an in-use position and a non-use position, the pulling portion being provided for pulling when the pulling member 420 is in the in-use position; when the traction piece 420 is positioned at the non-use position, the traction part can not be dragged; the body 410 is provided with a positioning structure 430 for guiding a tool to transfer the pulling member 420 from the non-use position to the use position.

The traction piece 420 is provided with an elastic piece 450, the positioning structure 430 is provided with a force-bearing portion 431 and a clamping portion 432 which are linked, the force-bearing portion 431 is in a convex shape, when the traction piece 420 is in a non-use position, the clamping portion 432 is locked with the traction piece 420, the traction piece 420 is provided with a recess 422 matched with the clamping portion 432, the traction piece 420 is fixed at the non-use position through the clamping portion 432, when the force-bearing portion 431 is stressed, the force-bearing portion 431 moves downwards to drive the clamping portion 432 to move downwards, the clamping portion 432 is unlocked with the traction piece 420, and the traction piece 420 is converted to a use position under the action of the reset force of the elastic piece 450. A spring 440 for providing a reset force to the positioning structure 430 is arranged below the positioning structure. When the pulling member 420 is rotated back to the non-use position, a force is applied to the pulling member 420, the elastic member 450 is deformed under force, the pulling member 420 presses the engaging portion 432, the engaging portion 432 moves downwards and then returns to the position under the reset force of the spring 440, and then is confined in the recess 422, and then the pulling member 420 is locked with the engaging portion 432.

Example 5:

referring to fig. 13 to 14, the present embodiment provides an orthodontic appliance having substantially the same structure as in embodiment 1 except that: the locating structure 530 is disposed on the lip side 512, and the locating structure 530 is an elongated recess extending to the first end 521.

Example 6:

referring to fig. 15 to 16, the present embodiment provides an orthodontic appliance having substantially the same structure as in embodiment 3 except that: the locating structure 630 is not in communication with the archwire slot 611.

Example 7:

referring to fig. 17 to 20, fig. 17 is a schematic view showing a non-use position of a pulling member of the orthodontic appliance of example 7, fig. 18 is a schematic view showing a use position of the pulling member of the orthodontic appliance of example 7, fig. 19 is a schematic view showing another angle of the orthodontic appliance of example 7, and fig. 20 is an exploded view showing a partial structure of the orthodontic appliance of example 7, this embodiment provides an orthodontic appliance including a body 710, the body 710 having an archwire slot 711 for receiving an archwire, the body 710 being provided with a movable pulling member 720, the pulling member 720 being movable between a use position and a non-use position, the pulling member 720 being provided to be pulled when the pulling member 720 is located at the use position; when the pulling member 720 is in the non-use position, the pulling portion is not available for pulling. The body 710 is provided with a positioning structure 730 for guiding a tool to move the pulling member 720 from the non-use position to the use position. The positioning structure 130 is a notch and is disposed near the pulling member 720. The positioning structure 730 is disposed on the distal side of the body.

The traction member 720 is provided with a locking part 721, the locking part 721 is locked with the main body 710 when the traction member 720 is in a non-use position, the elastic member 740 is arranged on the traction member 720, the locking part 721 is unlocked with the main body 710 when the traction member 720 is stressed to deform the elastic member 740, and the traction member 720 is switched to a use position under the action of the reset force of the elastic member 740. In this embodiment, the locking portion 721 is a protrusion, the main body 710 is provided with a recess 712 matching with the locking portion 721, the elastic member 740 is a spring, the main body 710 is provided with a rotating shaft, the elastic member 740 is sleeved on the rotating shaft, the pulling member 720 is sleeved on the elastic member 740, one end of the elastic member 740 is connected with the elastic member 740, the other end of the elastic member 740 is connected with the main body 720, specifically, the pulling member 720 and the main body 710 are respectively provided with a limited slot 722 and 713, and two ends of the elastic member 740 are respectively clamped into the two limited slots 722 and 713. When the traction member 720 is stressed, the tongue and lip direction movement can occur, so that the locking part 721 is locked and unlocked with the main body 710.

When the pulling member 720 needs to be opened, a force is applied to the pulling member 720, in this embodiment, a probe is used to hook the pulling member 720, the pulling member 720 moves towards the lip side, the elastic member 740 is stretched to deform, so that the locking portion 721 is unlocked from the main body 710, and the elastic member 740 is preset to match the state that the pulling member 720 is located at the using position, so that the pulling member 720 is switched to the using state under the action of the resetting force of the elastic member 740 after being unlocked. When the pulling member 720 needs to be closed again, a force is applied to the pulling member 720, and the pulling member 720 drives the elastic member 740 to deform until the locking portion 721 is locked with the main body 710.

The present invention is not limited to the above-described embodiments, and various changes and modifications of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.