CN220237056U - Cam type active self-locking bracket and fixing appliance thereof - Google Patents

Abstract

The utility model discloses a cam type active self-locking bracket and a fixing appliance thereof, which comprises the following components: the base plate, the body, the movable wing and the elastic element. The assembly of the arch wire is convenient to operate, can be completed only by simple rotation operation, and has stable active self-locking effect. Meanwhile, on the premise that the movable wings can continuously lock the arch wire, the movable wings and the arch wire are respectively arranged in different height directions, so that the movable wings can be directly accommodated in the bracket body, the overall thickness of the bracket is obviously reduced, foreign body sensation in the oral cavity of a patient can be greatly reduced, correction experience of the patient is improved, and meanwhile, influence on the intraoral operation space is reduced.

Description

Cam type active self-locking bracket and fixing appliance thereof

Technical Field

The utility model relates to the field of orthodontic, in particular to a cam type active self-locking bracket and a fixed appliance comprising the cam type active self-locking bracket.

Background

In orthodontic treatment, self-ligating brackets are generally divided into two broad categories, passive and active.

The locking plate of the passive self-locking bracket and the arch wire do not form constraint, so that the arch wire can slide in the arch wire groove, further the movement of teeth is controlled, the low friction force environment can be created in the early stage of correction, and the rapid alignment of leveling dentition and closing of gaps are facilitated. The active self-locking bracket uses the elastic movable part to enable the arch wire to be embedded into the bracket groove, the elastic part and the arch wire form constraint, meanwhile, the elastic part can store and gradually release energy, and continuously light force is transmitted to the teeth and the supporting structure to generate accurate and controllable movement, thereby effectively controlling the torque expression of the teeth in the groove and being beneficial to fine control and adjustment of the teeth.

The existing active self-locking bracket can partially adopt arc-shaped elastic sheets, C-shaped elastic sheets and the like as elastic movable elements. For example, the C-shaped spring piece is used as an element for directly locking the arch wire, the C-shaped spring piece is directly covered above the arch wire groove, and meanwhile, an additional locking cover is not adopted, the arch wire is enabled to apply a downward acting force through the spring piece resetting force, and the arch wire is locked in the bracket; for another example, the arc-shaped elastic sheet is embedded in the bracket lock cover, the bracket lock cover covers the upper portion of the arch wire, and after the assembly is completed, the arc-shaped elastic sheet embedded in the lock cover can apply a downward pressing acting force to the arch wire. There are also known technical means, in which an elastic member is disposed at the bottom of the slot of the archwire, a limit locking piece is disposed above the archwire, and an upward force is applied to the archwire by a slot bottom spring and a slot bottom plate disposed above the spring, so as to realize an actively self-locking bracket.

The above-mentioned existing active self-locking brackets have common defects, the depth direction of the slot of the arch wire is taken as a reference, the elastic element is usually arranged above or below the arch wire, the elastic element is often matched with other components to realize installation (such as a locking cover) or force application (such as a slot bottom plate), the elastic element and the corresponding matched components have certain thickness, after being overlapped in the height direction, the overall thickness of the bracket can be obviously increased, and the thickness of the bracket is difficult to reduce by more precise processing due to the restriction of processing precision and the consideration of manufacturing cost. For the fixation of the appliance, the thickness of the bracket is critical, and can directly affect the intensity of the foreign body sensation in the mouth of the patient, and also affect the space for the physician to operate in the mouth, requiring control at the millimeter size level. On the premise of ensuring the active self-locking effect of the bracket, the thickness of the bracket is reduced, and the foreign body sensation in the mouth of a patient is lightened, so that the utility model aims to solve the technical problem.

Disclosure of Invention

In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a cam type active self-locking bracket, and the other purpose is to provide a fixed appliance comprising the cam type active self-locking bracket, which can solve the problems of larger thickness and complex force application structure of the existing active self-locking bracket.

The utility model is realized by the following technical scheme:

a cam-type active self-locking bracket comprising: the base plate, the body part, the movable wings and the elastic element; the body is convexly arranged on the bottom plate, an arch wire groove for accommodating an arch wire and a movable wing groove for accommodating a movable wing are formed in the body, and the movable wing groove is communicated with the arch wire groove; the movable wings are rotatably arranged in the movable wing grooves, so that the movable wings are switched between a state of entering the archwire grooves or a state of exiting the archwire grooves; the elastic element is simultaneously fixed on the movable wing and the body part, and the restoring force of the elastic element is used for driving the movable wing to enter the archwire slot; one end part of the movable wing is a force application end which is of an arc-shaped surface structure; when the movable wing is arranged in the arch wire groove, the force application end of the movable wing is propped against the side part of the arch wire.

Further, the elastic element is: a torsion spring; the torsion spring is fixedly arranged on the movable wing in a penetrating manner, and two ends of the torsion spring are fixed on two side walls of the movable wing groove;

when the force application end of the movable wing is propped against the side part of the arch wire, the torsion spring is in a reset state.

Further, the elastic element is: a compression spring; the movable wing is rotatably connected in the movable wing groove through a rotating shaft; one end of the compression spring is fixed on the bottom plate, and the other end of the compression spring is abutted against the opposite end of the force application end of the movable wing;

when the force application end of the movable wing is propped against the side part of the arch wire, the compression spring is in a reset state.

Further, the extension direction of the movable wing slot is perpendicular to the extension direction of the archwire slot.

Further, the body is further provided with: an arch wire limiting part; the arch wire limiting part is convexly arranged on one inner wall of the arch wire groove and extends along the inner side direction of the arch wire groove; the arch wire limiting part is arranged opposite to the movable wing.

Further, the cam type active self-locking bracket further comprises: a fixed wing; the fixed wing is arranged on the side part of the body part and extends along the outer side direction of the arch wire groove.

Further, the movable wing further includes: an operation end; the operating end and the force application end are opposite ends of the movable wing, and the operating end is of an arc-shaped surface structure.

Further, the cross section of the arch wire groove is square, and the shape of the arch wire groove is matched with that of an arch wire.

Further, the bonding surface of the bottom plate is provided with a net structure or a dot structure for enhancing bonding force.

A fixed appliance comprising the cam type active self-locking bracket, and further comprising: an archwire; the arch wire is arranged in an arch wire groove of the cam type active self-locking bracket.

Compared with the prior art, the utility model has the following beneficial effects:

when the archwire is assembled, the movable wing is pressed to enable the movable wing to rotate and separate from the archwire groove, at the moment, the archwire groove is completely opened, and meanwhile, the elastic element is in a compressed state; at this time, a doctor can put the arch wire into the arch wire slot, then release the movable wing, the elastic element releases the reset force to drive the movable wing to reset, the force application end of the movable wing is tightly pressed on the arch wire, the arch wire is locked in the arch wire slot, and an active self-locking effect is formed, so that the appliance can finely control the force of teeth in the three-dimensional direction. The force application end of the movable wing adopts an arc-shaped surface, and the arc-shaped surface is of a smooth transition structure, so that the movable wing can be always pressed on the arch wire, a small amount of tolerance can be compensated, and stable constraint can be formed between the elastic element and the arch wire.

The assembly of the arch wire is convenient to operate, can be completed only by simple rotation operation, and has stable active self-locking effect. Meanwhile, on the premise that the movable wings can continuously lock the arch wire, the movable wings and the arch wire are respectively arranged in different height directions, so that the movable wings can be directly accommodated in the bracket body, the overall thickness of the bracket is obviously reduced, foreign body sensation in the oral cavity of a patient can be greatly reduced, correction experience of the patient is improved, and meanwhile, influence on the intraoral operation space is reduced.

Drawings

FIG. 1 is a schematic view of an assembly of the present utility model;

FIG. 2 is another schematic assembly view of the present utility model;

FIG. 3 is a front view of the present utility model;

FIG. 4 shows a side view of the present utility model;

FIG. 5 shows a bottom view of the present utility model;

FIG. 6 is a schematic view of a cam-type active self-locking bracket;

fig. 7 is a schematic diagram of a second embodiment of the present utility model.

In the figure: 10. a bracket; 11. a bottom plate; 12. a body; 13. a movable wing; 131. a force application end; 132. an operation end; 14. an elastic element; 141. a torsion spring; 142. a compression spring; 15. archwire slot; 151. an arch wire limiting part; 16. a movable wing groove; 17. a fixed wing; 18. and (3) rotating the shaft.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.

In the description of the present utility model, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The utility model discloses a cam type active self-locking bracket 10, referring to fig. 1-5, comprising: a base plate 11, a body 12, a movable wing 13 and an elastic element 14.

Wherein, the bottom plate 11 is provided with an adhesive surface for adhering to the tooth surface of a patient, and the adhesive surface can be provided with a reticular structure or a dot-shaped structure for enhancing adhesive force; the body 12 is provided in a convex manner on the opposite side to the bonding surface of the base plate 11. The body 12 is provided with an archwire slot 15 for accommodating an archwire, the archwire slot 15 is a through slot, the cross section of the archwire slot 15 can be square, round, oval and the like, and the shape of the archwire slot is specifically determined according to the shape of the archwire, in the embodiment, the cross section of the archwire slot 15 is square, and the archwire is a square archwire correspondingly. The side of the archwire slot 15 facing away from the base plate 11 has an opening through which an archwire can be placed into the archwire slot 15.

Referring to fig. 6, the body 12 is further provided with a movable wing slot 16 for accommodating the movable wing 13. The movable wing groove 16 and the arch wire groove 15 are communicated with each other. The movable wing 13 is rotatably disposed in the movable wing slot 16, and by the rotational movement, the movable wing 13 can have two positions of entering the archwire slot 15 and exiting the archwire slot 15. The elastic element 14 is fixed to both the movable wing 13 and the body 12, the elastic element 14 acting to drive the movable wing 13 into the archwire slot 15 by its restoring force.

Referring to fig. 4, an end portion of the movable wing 13 is a force application end 131, and the force application end 131 has an arc-shaped structure. When the movable wing 13 is separated from the archwire slot 15, the elastic element 14 is in a compressed state; when the movable wing 13 is placed in the archwire slot 15, the elastic element is in a reset state, and the force application end 131 of the movable wing 13 abuts against the side part of the archwire and locks the archwire in the archwire slot 15.

The other end of the movable wing 13 opposite to the force application end 131 is an operation end 132 for pressing by a doctor to rotate the movable wing 13. The operating end 132 is also preferably of arcuate surface configuration, with a smooth configuration that prevents scratching of the human hand.

The working principle of the utility model is as follows: when assembling the archwire, the operating end 132 of the movable wing 13 is pressed, so that the movable wing 13 rotates and is separated from the archwire slot 15, at this time, the archwire slot 15 is completely opened, and the elastic element 14 is in a compressed state; at this time, a doctor can put the archwire into the archwire slot 15, then release the movable wing 13, the elastic element 14 releases the restoring force to drive the movable wing 13 to restore, the force application end 131 of the movable wing 13 is tightly pressed on the archwire, the archwire is locked in the archwire slot 15, and an active self-locking effect is formed, so that the appliance can finely control the force of the teeth in the three-dimensional direction. The force application end 131 of the movable wing 13 adopts an arc surface, and the arc surface is of a smooth transition structure, so that the movable wing 13 can be always pressed on the arch wire, a small amount of tolerance can be compensated, and stable constraint can be formed between the elastic element 14 and the arch wire.

The assembly of the arch wire is convenient to operate, can be completed only by simple pressing operation, and has stable active self-locking effect. Meanwhile, under the premise that the movable wings 13 can continuously lock the arch wire, the movable wings 13 and the arch wire are respectively arranged in different height directions, so that the movable wings 13 can be directly accommodated in the body 12 of the bracket 10, the overall thickness of the bracket 10 is obviously reduced (the thickness of the bracket 10 is only the height of the bottom plate 11 plus the body 12, and the height of the elastic element 14 is not required to be overlapped any more), the foreign body sensation in the oral cavity of a patient can be greatly reduced, the correction experience of the patient is improved, and meanwhile, the influence on the intraoral operation space is also reduced.

The following two embodiments are possible in the transmission form of this embodiment.

Embodiment one:

referring to fig. 4, the elastic member 14 employs a torsion spring 141. The torsion spring 141 is fixedly penetrated in the movable wing 13, and two ends of the torsion spring 141 are fixed on two side walls of the movable wing groove 16. When an arch wire is required to be placed, a doctor rotates the operation end 132 of the movable wing 13 to one side of the bottom plate 11, the torsion spring 141 is elastically deformed, and the force application end 131 of the movable wing 13 is withdrawn from the arch wire slot 15; after the archwire is placed, the operating end 132 of the movable wing 13 is loosened, the torsion spring 141 is reset, the movable wing 13 is driven to rotate in the opposite direction, the force application end 131 of the movable wing 13 reenters the archwire slot 15, and the archwire is locked.

Embodiment two:

referring to fig. 7, the elastic member 14 employs a compression spring 142. The movable wing 13 is rotatably connected to the movable wing groove 16 by a rotation shaft 18, and one end of the compression spring 142 is fixed to the base plate 11, and the other end abuts against the operation end 132 of the movable wing 13. When an arch wire is required to be placed, a doctor presses the operation end 132 of the movable wing 13 towards the bottom plate 11 side, the compression spring 142 is elastically deformed, and the force application end 131 of the movable wing 13 is withdrawn from the arch wire slot 15; after the archwire is placed, the operating end 132 of the movable wing 13 is loosened, the compression spring 142 is reset, the movable wing 13 is jacked to rotate in the opposite direction, the force application end 131 of the movable wing 13 reenters the archwire slot 15, and the archwire is locked.

Of course, the utility model is not limited to the two structural forms, but also other common elastic connection modes, and is not exemplified one by one; it is intended that all embodiments which do not require any inventive effort to extend beyond the inventive concepts are within the scope of the present utility model.

Preferably, referring to fig. 3 and 6, the extending direction of the movable wing groove 16 is perpendicular to the extending direction of the arch wire groove 15, so as to ensure the maximum stress area of the movable wing 13 for exerting force on the arch wire.

Preferably, in order to prevent the archwire from backing out of the archwire slot 15, referring to FIG. 4, the body 12 is further provided with an archwire limiting portion 151. The arch wire limiting part 151 is convexly arranged on one inner wall of the arch wire groove 15 and extends along the inner direction of the arch wire groove 15 to limit the arch wire in the groove height direction; the arch wire limiting part 151 is arranged opposite to the movable wing 13.

Preferably, the present utility model also includes a retaining wing 17, the retaining wing 17 being provided on the side of the body 12 and extending in the outboard direction of the archwire slot 15. The fixed wing 17 can be used as a wing structure of the upper bracket 10, and the movable wing 13 can be used as a wing structure of the lower bracket 10.

In this embodiment, the archwire slot 15 has a square cross-sectional shape, with the archwire being a square archwire accordingly.

The utility model also discloses a fixing appliance which comprises the cam type active self-locking bracket 10 and also comprises an arch wire, wherein the arch wire is arranged in an arch wire groove 15 of the cam type active self-locking bracket 10. All fixed appliances employing the same or substantially the same cam-type active self-locking brackets 10 are within the scope of the present utility model.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims (10)

1. The utility model provides a cam-type initiative auto-lock bracket which characterized in that includes:

the base plate, the body part, the movable wings and the elastic element;

the body is convexly arranged on the bottom plate, an arch wire groove for accommodating an arch wire and a movable wing groove for accommodating a movable wing are formed in the body, and the movable wing groove is communicated with the arch wire groove; the movable wings are rotatably arranged in the movable wing grooves, so that the movable wings are switched between a state of entering the archwire grooves or a state of exiting the archwire grooves; the elastic element is simultaneously fixed on the movable wing and the body part, and the restoring force of the elastic element is used for driving the movable wing to enter the archwire slot;

one end part of the movable wing is a force application end which is of an arc-shaped surface structure; when the movable wing is arranged in the arch wire groove, the force application end of the movable wing is propped against the side part of the arch wire.

2. The cam-type active self-ligating bracket of claim 1 wherein said resilient element is: a torsion spring; the torsion spring is fixedly arranged on the movable wing in a penetrating manner, and two ends of the torsion spring are fixed on two side walls of the movable wing groove;

when the force application end of the movable wing is propped against the side part of the arch wire, the torsion spring is in a reset state.

3. The cam-type active self-ligating bracket of claim 1 wherein said resilient element is: a compression spring; the movable wing is rotatably connected in the movable wing groove through a rotating shaft; one end of the compression spring is fixed on the bottom plate, and the other end of the compression spring is abutted against the opposite end of the force application end of the movable wing;

when the force application end of the movable wing is propped against the side part of the arch wire, the compression spring is in a reset state.

4. The cam-type active self-ligating bracket of claim 1 wherein said movable wing slot extends in a direction perpendicular to the direction of extension of said archwire slot.

5. The cam-type active self-locking bracket of claim 4, wherein the body is further provided with: an arch wire limiting part; the arch wire limiting part is convexly arranged on one inner wall of the arch wire groove and extends along the inner side direction of the arch wire groove; the arch wire limiting part is arranged opposite to the movable wing.

6. The cam-type active self-ligating bracket of claim 1, further comprising: a fixed wing; the fixed wing is arranged on the side part of the body part and extends along the outer side direction of the arch wire groove.

7. The cam-type active self-ligating bracket of claim 2 wherein said movable wing further comprises: an operation end; the operating end and the force application end are opposite ends of the movable wing, and the operating end is of an arc-shaped surface structure.

8. The cam-type active self-ligating bracket of claim 1 wherein said archwire slot has a square cross-sectional shape, said archwire slot being shaped to match an archwire.

9. The cam-type active self-locking bracket of claim 1, wherein the bonding surface of the base plate is provided with a mesh-like structure or a dot-like structure for enhancing bonding force.

10. A fixed appliance comprising the cam-type active self-ligating bracket of any one of claims 1 to 9, further comprising: an archwire; the arch wire is arranged in an arch wire groove of the cam type active self-locking bracket.