An orthodontic locking device and orthodontic system

Abstract

This utility model discloses an orthodontic locking device and an orthodontic system. The orthodontic locking device is used in conjunction with an orthodontic appliance to lock the archwire. The orthodontic locking device includes a first clamping arm and a second clamping arm, which are directly or indirectly connected. At least a portion of the first clamping arm and at least a portion of the second clamping arm are movable relative to each other to change their relative positional relationship. The orthodontic locking device has a natural state when it is not in the archwire slot and a locked state when it is in the archwire slot. When the orthodontic locking device is subjected to external force in its natural state and enters the archwire slot of the orthodontic appliance and is in the locked state, both the first clamping arm and the second clamping arm are pressed against the archwire slot. The orthodontic locking device of this utility model has a simple structure and is easy to operate. It can adjust and select a suitable orthodontic locking device according to the doctor's needs to adjust the effective space of the archwire slot, accurately adjust the archwire expression parameters, and improve the correction efficiency.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to an orthodontic locking device and an orthodontic system. Background Technology

[0002] With the improvement of people's living standards, the demand for obtaining and maintaining correct occlusion, improving facial aesthetics, and enhancing oral hygiene is becoming increasingly strong. Consequently, the development of orthodontic appliances for straightening teeth is also improving, but competition is also becoming increasingly fierce.

[0003] In the prior art, orthodontic appliances typically include brackets and cover components detachably connected to the brackets, with locking devices provided on the brackets. For example, utility model patent application CN202223015942.6 discloses a locking device for a fixed orthodontic appliance, including at least one spacer block and at least one buckle. The spacer block is placed inside the slot or at least one end of the slot opening, and the buckle is placed outside the slot and fastens the fixed orthodontic appliance. However, in actual orthodontic treatment, this structure is complex, and the buckle, being placed outside the slot, can easily rub against the patient's oral mucosa. Another example is a stop bracket with patent application CN201820634651.X, which discloses a technique for adjusting the size of the archwire slot by adjusting a positioning clearance plate. However, this structure is complex and inconvenient to adjust. Therefore, how to design an orthodontic locking device that is simple in structure, easy to operate, facilitates adjustment of the effective space of the archwire slot, and achieves spacer locking has become an urgent technical problem to be solved in the prior art. Utility Model Content

[0004] This application provides an orthodontic locking device and an orthodontic system. The orthodontic locking device has a simple structure and is easy to operate. It can adjust the effective space of the archwire groove according to the doctor's needs, accurately adjust the archwire expression parameters, and improve the correction efficiency, thereby solving the problems existing in the prior art.

[0005] The technical solution is as follows:

[0006] The first aspect of this utility model claims protection for an orthodontic locking member for use with orthodontic appliances to lock the archwire. The orthodontic locking member includes: a first clamping arm and a second clamping arm, the first clamping arm and the second clamping arm being directly or indirectly connected, and at least a portion of the first clamping arm and at least a portion of the second clamping arm being movable relative to each other to change their relative positional relationship.

[0007] The orthodontic locking device has a natural state with the archwire unlocked and a locked state with the archwire locked. When the orthodontic locking device is subjected to external force in its natural state and enters the archwire groove of the orthodontic appliance and is in the locked state, the first clamping arm and the second clamping arm both abut against the archwire groove to change the effective space in the archwire groove.

[0008] In some embodiments, the orthodontic locking member further includes a base, with the first clamping arm and the second clamping arm connected to opposite sides of the base.

[0009] In some embodiments, the orthodontic locking member has a cross-sectional shape of "V", "U", "C", "W" or "I" in its natural state along the direction perpendicular to the mesiodistal direction.

[0010] In some embodiments, when the orthodontic locking member has an "I" shaped cross-section in its natural state along the direction perpendicular to the mesiodistal direction, at least a portion of the first clamping arm and at least a portion of the second clamping arm can rotate relative to each other, or at least a portion of the first clamping arm and at least a portion of the second clamping arm can rotate relative to the base.

[0011] In some embodiments, a friction enhancement portion is provided on the outer side of the first clamping arm and / or the outer side of the second clamping arm, the friction enhancement portion being used to increase the friction force when the first clamping arm and the second clamping arm abut against the bowwire groove.

[0012] In some embodiments, when the orthodontic locking member is inserted into the archwire groove and is in the locked state, the length of the orthodontic locking member in the mesiodistal direction is no more than 4 mm, and the height in the labiolingual direction is no more than 0.8 mm.

[0013] In some embodiments, when the orthodontic locking member is inserted into the archwire groove and is in the locked state, the thickness of the first clamping arm and / or the second clamping arm is not exactly the same in the gingival-maxillary direction.

[0014] The orthodontic locking device claimed in the first aspect of this utility model has the following advantages: 1. It has a simple structure, is easy to assemble, is easy to operate, and has strong adaptability; 2. It improves the orthodontic efficiency, and can adjust the effective size of the archwire slot in a timely manner according to the doctor's needs during the orthodontic process to meet the needs of different types of archwires, accurately express archwire data, and improve clinical efficiency.

[0015] The second aspect of this utility model claims protection for an orthodontic system, including an orthodontic appliance that cooperates with the orthodontic locking device claimed in the first aspect of this utility model. The orthodontic appliance includes a main body and a cover. The main body is provided with an archwire groove that extends through the main body in a mesiodistal direction and divides the main body into a first end and a second end. The cover is movably disposed on the second end and can open or close the archwire groove.

[0016] In some embodiments, a limiting groove is provided in the archwire groove. When the orthodontic locking member enters the archwire groove and is in the locked state, the first clamping arm, and / or the second clamping arm, and / or the base is at least partially located in the limiting groove to limit the orthodontic locking member.

[0017] In some embodiments, the archwire groove is provided with a protrusion, and the outer side of the first clamping arm and / or the second clamping arm, and / or the base is provided with a recess for matching the protrusion to limit the orthodontic locking member.

[0018] The orthodontic system claimed in the second aspect of this utility model has the following advantages: 1. It is easy to operate. The cover and the second end are movably connected, making it easier to open or close the archwire slot. Doctors can quickly install or adjust the archwire, reducing operation time; 2. It improves correction efficiency. During the correction process, the appropriate orthodontic locking device can be selected according to the doctor's needs to meet different types of archwires and accurately express archwire data; 3. When locked, the orthodontic locking device of the orthodontic system is located in the archwire slot and will not be exposed outside the orthodontic appliance during the orthodontic process, thereby avoiding scratching the patient's oral mucosa and improving patient comfort. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application.

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the orthodontic locking component in its natural state in Example 1.

[0022] Figure 2 for Figure 1Top view of the orthogonal locking component.

[0023] Figure 3 for Figure 1 Left view of the orthodontic locking device.

[0024] Figure 4 This is a schematic diagram of an orthodontic locking device in the locked state, as shown in the embodiment.

[0025] Figure 5 for Figure 4 Top view of the orthogonal locking component.

[0026] Figure 6 for Figure 4 Left view of the orthodontic locking device.

[0027] Figure 7 This is a schematic diagram of the orthodontic locking device in its natural state according to the second embodiment of Example 1.

[0028] Figure 8 for Figure 7 A schematic diagram of the orthogonal locking device in the locked state.

[0029] Figure 9 This is a schematic diagram of the orthodontic locking device in the third embodiment of Example 1.

[0030] Figure 10 This is a schematic diagram of the orthodontic locking device in the fourth embodiment of Example 1.

[0031] Figure 11 This is a schematic diagram of the orthodontic system in the first embodiment of Example 2.

[0032] Figure 12 for Figure 11 Side view of the orthodontic locking device in its natural state.

[0033] Figure 13 for Figure 11 The side view of the orthodontic locking device in the locked state.

[0034] Figure 14 for Figure 11 A cross-sectional view of the orthodontic system in China.

[0035] Figure 15 This is a schematic diagram of the orthodontic system in the second embodiment of Example 2.

[0036] Figure 16 for Figure 15 A top view of the orthodontic system in the image.

[0037] Figure 17 for Figure 15Side view of the orthodontic locking device in its natural state.

[0038] Figure 18 for Figure 15 The side view of the orthodontic locking device in the locked state.

[0039] Figure 19 for Figure 15 A cross-sectional view of the orthodontic system in China.

[0040] Explanation of reference numerals in the attached drawings: 1. Orthodontic locking element; 11. First clamping arm; 12. Second clamping arm; 13. Base; 2. Archwire; 31. First end; 32. Second end; 33. Cover body; 34. Archwire groove; 35. Limiting groove. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description, in conjunction with the accompanying drawings and specific embodiments, further illustrates this application. It should be understood that the specific embodiments described herein are merely illustrative and do not limit the scope of protection of this application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0043] To better understand the orthodontic appliance of this application, the following description is provided in conjunction with the accompanying drawings.

[0044] Example 1

[0045] like Figure 1-6 As shown, an orthodontic locking member 1 is used in conjunction with an orthodontic appliance to lock the archwire 2. The orthodontic locking member 1 includes: a first clamping arm 11 and a second clamping arm 12. The first clamping arm 11 and the second clamping arm 12 are directly connected. At least a portion of the first clamping arm 11 and at least a portion of the second clamping arm 12 are movable relative to each other to change their relative positional relationship. Specifically, the orthodontic locking member 1 has a natural state in which the archwire 2 is not locked (e.g., Figure 1-3 (as shown) and the locking state of the locking bowwire (as shown) Figure 4-6(As shown). When the orthodontic locking member 1 is not subjected to external force, it is in its natural state. When the orthodontic locking member 1 is subjected to external force F in its natural state and enters the archwire groove 34 of the orthodontic appliance and is in the locked state, the first clamping arm 11 and the second clamping arm 12 both abut against the archwire groove 34 to change the effective space within the archwire groove 34, and the archwire is located within the space formed by the first clamping arm 11 and the second clamping arm 12. Specifically, when the orthodontic locking member 1 is in the locked state, the outer sides of the first clamping arm 11 and the second clamping arm 12 both abut against the sidewall of the archwire groove 34. The outer sides of the first clamping arm 11 and the second clamping arm 12 of the orthodontic locking member 1 both generate friction with the archwire groove 34, thus fixing the orthodontic locking member 1 within the archwire groove 34. The archwire is located within the space formed by the first clamping arm 11 and the second clamping arm 12. The orthodontic locking member 1 changes the effective space within the archwire groove 34 to occupy or completely fill the space. Locking refers to two methods: "occupancy" and "complete locking." "Occupancy" means that the orthodontic locking element occupies the effective space within the archwire groove. The outer sides of the first clamping arm 11 and the second clamping arm 12 are both pressed against the archwire groove 34, but the archwire is not clamped by the first clamping arm 11 and the second clamping arm 12, allowing the archwire to still move relative to the orthodontic appliance. "Complete locking" means that the orthodontic locking element occupies the effective space within the archwire groove, and the archwire is completely clamped by the first clamping arm 11 and the second clamping arm 12, fixing the archwire relative to the orthodontic appliance and preventing movement. In this embodiment, the orthodontic locking element 1 is used for occupancy or complete locking, thus more accurately expressing the archwire parameters.

[0046] During the use of the orthodontic locking device 1 in this embodiment, i.e. during orthodontic treatment, the archwire 2 can be clamped in the space formed by the first clamping arm 11 and the second clamping arm 12 using external force first, and then the orthodontic locking device 1 holding the archwire 2 can be placed in the archwire groove 34. Alternatively, the orthodontic locking device 1 can be placed in the archwire groove 34 using external force first, and then the archwire can be placed in the space formed by the first clamping arm 11 and the second clamping arm 12. The specific operation method can be adjusted according to the convenience of use during the doctor's treatment process, and no restrictions are imposed here.

[0047] In some embodiments of this example, the first clamping arm 11 and the second clamping arm 12 are indirectly connected. Specifically, as shown in the example... Figure 7-8 As shown, the orthodontic locking device 1 also includes a base 13, and a first clamping arm 11 and a second clamping arm 12 are connected to opposite sides of the base 13. In this embodiment, by setting the base 13 and connecting the first clamping arm 11 and the second clamping arm 12 to the base 13, the ease of use for doctors can be improved.

[0048] In some embodiments of this example, the orthodontic locking member 1, in its natural state, has a cross-sectional shape of "V", "U", "C", "W" or "I" shaped along the direction perpendicular to the mesiodistal axis. Specifically, when the orthodontic locking member 1 is placed in the archwire groove 34 under an external force F, the first clamping arm 11, and / or the second clamping arm 12, and / or the base 13 deform, thereby causing deformation. As a result, both the first clamping arm 11 and the second clamping arm 12 press against the archwire groove 34, and friction is generated between the first clamping arm 11 and the second clamping arm 12 and the archwire groove 34, thereby fixing the orthodontic locking member 1 relative to the archwire groove 34. The orthodontic locking member 1 changes the effective space within the archwire groove 34 to occupy or completely lock the space. For example, when the orthodontic locking member 1 does not include the base 13, after being placed in the archwire groove 34 by external force, the deformation may occur in either the first clamping arm 11 or the second clamping arm 12, or both may deform. As another example, when the orthodontic locking member 1 includes the base 13, after being placed in the archwire groove 34 by external force, the deformation may occur in at least one of the first clamping arm 11, the second clamping arm 12, and the base 13. In some other embodiments, the orthodontic locking member 1 has an irregular cross-sectional shape. Those skilled in the art can adjust the structure of the orthodontic locking member 1 according to specific circumstances, so the cross-sectional shape of the orthodontic locking member 1 is not limited to the above-described cross-sectional structure. It is sufficient that the orthodontic locking member 1 can enter the archwire groove 34 after being subjected to external force, abut against the side wall of the archwire groove 34 to adjust the effective space of the archwire groove 34, and achieve the effect of occupancy and locking. No specific limitation is made here.

[0049] In some embodiments of this example, when the orthodontic locking member 1 has an "I" shaped cross-section in its natural state in the direction perpendicular to the mesiodistal direction, at least a portion of the first clamping arm and at least a portion of the second clamping arm 12 can rotate relative to each other, or at least a portion of the first clamping arm and at least a portion of the second clamping arm 12 can rotate relative to the base 13, so that the orthodontic locking member 1 can enter the archwire groove 34 to occupy the effective space of the archwire groove 34.

[0050] In some embodiments of this example, a friction-enhancing portion is provided on the outer side of the first clamping arm 11 and / or the outer side of the second clamping arm 12. This friction-enhancing portion is used to increase friction when the first clamping arm 11 and the second clamping arm 12 abut against the archwire groove 34, further securing the orthodontic locking member 1. Specifically, as... Figure 9As shown, the friction part can be a number of small stripes. In some other embodiments, the friction enhancement part can be a number of small protrusions. Those skilled in the art can adjust the structure of the friction enhancement part according to the specific situation. It is only necessary for the orthodontic locking member 1 to increase the friction between the orthodontic locking member 1 and the archwire groove 34 when the first clamping arm 11 and the second clamping arm 12 are both pressed against the archwire groove 34, so as to make the orthodontic locking member 1 and the archwire groove 34 more stable.

[0051] In some embodiments of this example, when the orthodontic locking member 1 is locked within the archwire groove 34, the length L of the orthodontic locking member 1 in the mesiodistal direction is no greater than 4 mm, and the height H in the labiolingual direction is no greater than 0.8 mm. Specifically, in this embodiment, the orthodontic locking member 1 is located within the archwire groove 34 in the locked state and will not be exposed outside the orthodontic appliance during orthodontic treatment. Figure 1-6 As shown, the length L in the mesiodistal direction should not exceed 4 mm, and the height H in the labiolingual direction should not exceed 0.8 mm. When its length exceeds 4 mm, the orthodontic locking element 1 may protrude beyond the archwire groove 34 in the mesiodistal direction, thereby rubbing against the patient's oral mucosa during orthodontic treatment and reducing the patient's experience. In addition, when its height H is greater than 4 mm, the overall size of the orthodontic appliance may be too large, and the thickness of the orthodontic appliance in the labiolingual direction may increase, thereby reducing the patient's comfort.

[0052] In some embodiments, when the orthodontic locking member 1 is locked within the archwire groove 34, the thickness D of the first clamping arm 11 and / or the second clamping arm 12 in the gingival-maxillary direction is not entirely the same, such as... Figure 10 As shown, the thickness of the first clamping arm 11 and / or the second clamping arm 12 is not exactly the same in the gingival direction, so the figure-eight ligation on the canines can effectively control the deepening of the overbite.

[0053] Example 2

[0054] An orthodontic system includes an orthodontic appliance that cooperates with the orthodontic locking element 1 in Embodiment 1, as shown in the figure. The orthodontic appliance includes a main body and a cover 33. An archwire groove 34 is provided on the main body, extending through the main body in a mesiodistal direction. The archwire groove 34 divides the main body into a first end 31 and a second end 32. The cover 33 is movably disposed on the second end 32, and the cover 33 can open or close the archwire groove 34. In this embodiment, the cover 33 is movably connected to the second end 32, making it easier to open or close the archwire groove 34. Doctors can quickly install or adjust the archwire, reducing operation time. In addition, during the orthodontic process, the appropriate orthodontic locking element 1 can be selected according to the doctor's needs to accommodate different types of archwires. When locked, the orthodontic locking element 1 is disposed within the archwire groove and will not be exposed outside the orthodontic appliance during the orthodontic process, thereby avoiding abrasion of the patient's oral mucosa and improving patient comfort.

[0055] In some embodiments of this example, a limiting groove 35 is provided in the archwire groove 34. When the orthodontic locking member 1 enters the archwire groove 34 and is in a locked state, the first clamping arm 11, and / or the second clamping arm 12, and / or the base 13 are at least partially located in the limiting groove 35 to limit the orthodontic locking member 1. Specifically, as Figure 11-14 As shown, a limiting groove 35 is provided at the bottom of the archwire groove 34. The length of the limiting groove 35 in the mesiodistal direction is greater than or equal to the length of the base 13 in the mesiodistal direction. Therefore, when the orthodontic locking member 1 enters the archwire groove 34 and is in a locked state, the limiting groove 35 can lock the base 13 of the orthodontic locking member 1. This further restricts the possible displacement of the orthodontic locking member 1 relative to the orthodontic appliance in the mesiodistal direction, further improving the relative stability between the orthodontic locking member 1 and the orthodontic appliance. In some other embodiments of this example, such as... Figure 15-19 As shown, a limiting groove 35 can also be provided on the side wall of the archwire groove 34, so that when the orthodontic locking member 1 enters the archwire groove 34 and is in a locked state, the limiting groove 35 can lock the first clamping arm 11 and / or the second clamping arm 12 of the orthodontic locking member 1, which can further limit the possible displacement of the orthodontic locking member 1 relative to the orthodontic appliance in the mesiodistal direction.

[0056] In some embodiments of this example, a protrusion is provided in the archwire groove 34, and a recess is provided on the outer side of the first clamping arm 11 and / or the second clamping arm 12 and / or the base 13 for matching with the protrusion to limit the orthodontic locking member 1. Specifically, a protrusion is provided at the bottom of the archwire groove 34, and a recess is provided on the base 13 so that when the orthodontic locking member 1 enters the archwire groove 34 and is in a locked state, the protrusion is inserted into the recess. The cooperation between the protrusion and the recess restricts the possible displacement of the orthodontic locking member 1 relative to the orthodontic appliance in the mesiodistal direction, thereby further improving the relative stability between the orthodontic locking member 1 and the orthodontic appliance.

[0057] Equivalently, "a certain body" or "a certain part" can be a portion of the corresponding "component," meaning that "a certain body" or "a certain part" is integrally formed and manufactured with the "other parts of the component"; or it can be an independent component that can be separated from the "other parts of the component," meaning that "a certain body" or "a certain part" can be manufactured independently and then combined with the "other parts of the component" to form a whole. The expression of "a certain body" or "a certain part" in this application is merely one embodiment for ease of reading, and is not intended to limit the scope of protection of this application. Any technical solution that includes the above features and has the same function should be understood as an equivalent technical solution of this application.

[0058] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0059] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0061] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0062] It should be noted that when a component is described as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable. Examples include socketing, snap-fitting, integral molding, and welding, which are feasible in conventional technologies and will not be elaborated upon here.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application.

Claims

1. An orthodontic lockout for cooperating with an orthodontic appliance to lock out an archwire, the orthodontic lockout comprising: The orthodontic locking device includes: a first clamping arm and a second clamping arm, wherein the first clamping arm and the second clamping arm are directly connected or indirectly connected, and at least a portion of the first clamping arm and at least a portion of the second clamping arm are movable relative to each other to change their relative positional relationship. The orthodontic locking member has a natural state when it is not in the archwire groove and a locked state when it is in the archwire groove. When the orthodontic locking member is subjected to external force in the natural state and enters the archwire groove of the orthodontic appliance and is in the locked state, the first clamping arm and the second clamping arm both abut against the archwire groove to change the effective space in the archwire groove.

2. The orthodontic lock of claim 1, wherein It also includes a base, with the first clamping arm and the second clamping arm connected to opposite sides of the base.

3. The orthodontic lock of any one of claims 1-2, wherein, The orthodontic locking member, in its natural state, has a cross-sectional shape of "V", "U", "C", "W" or "I" shaped along the direction perpendicular to the mesiodistal direction.

4. The orthodontic lock of claim 2, wherein the at least one protrusion is a protrusion on the first member. When the orthodontic locking member has an "I" shaped cross-section in its natural state along the direction perpendicular to the mesiodistal direction, at least a portion of the first clamping arm and at least a portion of the second clamping arm can rotate relative to each other, or at least a portion of the first clamping arm and at least a portion of the second clamping arm can rotate relative to the base.

5. The orthodontic locking device as described in claim 3, characterized in that... A friction enhancement portion is provided on the outer side of the first clamping arm and / or the outer side of the second clamping arm. The friction enhancement portion is used to increase the friction force when the first clamping arm and the second clamping arm abut against the bow wire groove.

6. The orthodontic locking member as described in claim 3, characterized in that, When the orthodontic locking member is inserted into the archwire groove and is in the locked state, the length of the orthodontic locking member in the mesiodistal direction is not greater than 4 mm, and the height in the labiolingual direction is not greater than 0.8 mm.

7. The orthodontic locking member as described in claim 3, characterized in that, When the orthodontic locking member is inserted into the archwire groove and is in the locked state, the thickness of the first clamping arm and / or the second clamping arm is not exactly the same in the gingival-maxillary direction.

8. An orthodontic system, characterized in that, The invention includes an orthodontic appliance and an orthodontic locking device as described in any one of claims 1 to 7. The orthodontic appliance includes a main body and a cover. The main body is provided with an archwire groove that extends through the main body in a mesiodistal direction. The archwire groove divides the main body into a first end and a second end. The cover is movably disposed on the second end and can open or close the archwire groove.

9. The orthodontic system of claim 8, wherein, The archwire groove is provided with a limiting groove. When the orthodontic locking member enters the archwire groove and is in the locking state, the first clamping arm, and / or the second clamping arm, and / or the base is at least partially located in the limiting groove to limit the orthodontic locking member.

10. The orthodontic system of claim 8, wherein, The archwire groove is provided with a protrusion, and the outer side of the first clamping arm and / or the second clamping arm, and / or the base is provided with a recess for matching the protrusion to limit the orthodontic locking member.

Images