Accessory assembly and shell-shaped dental instrument

Abstract

The invention provides an accessory assembly and a shell-shaped dental instrument. The accessory assembly comprises an accessory mounting seat, a first accessory mounting part and a second accessory mounting part are arranged on the peripheral face of the accessory mounting seat in a staggered mode, the first accessory mounting part is used for mounting a first accessory, and the second accessory mounting part is used for mounting a second accessory. The first accessory and the second accessory can be installed on the accessory installation base at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of tooth correction, and in particular to an accessory component and a shell-shaped dental instrument. Background Art

[0002] Shell-shaped dental appliances made of polymer materials are becoming more and more popular due to their advantages of being beautiful, convenient, and easy to clean. When using shell-shaped dental appliances for orthodontic treatment, a series of shell-shaped dental appliances are usually required, each of which has a cavity for accommodating teeth, and the geometry of the cavity basically matches the tooth layout desired to be achieved in the treatment step.

[0003] Generally, in many cases, it is difficult to ensure that the corrective force of appropriate size and direction is applied to the teeth by simply relying on the shell-shaped dental appliance itself. Therefore, in order to achieve functions such as traction, the current shell-shaped dental appliance may include an appliance body and an accessory assembly disposed on the appliance body, and the accessory assembly may be installed with accessories. However, in the current correction process, in order to install accessories, more correction steps are required to install different accessories or the shell-shaped dental appliance needs to be frequently replaced. Summary of the invention

[0004] The object of the present invention is to provide an accessory assembly and a shell-shaped dental instrument, wherein the accessory mounting seat can mount two accessories at the same time.

[0005] To achieve the above-mentioned purpose of the invention, one embodiment of the present invention provides an accessory assembly, including an accessory mounting seat, wherein the accessory mounting seat has a first accessory mounting portion and a second accessory mounting portion alternately arranged on a circumferential surface, the first accessory mounting portion is used to install a first accessory, and the second accessory mounting portion is used to install a second accessory, and the first accessory and the second accessory can be installed on the accessory mounting seat at the same time.

[0006] As a further improvement of one embodiment of the present invention, the accessory mounting seat includes a top surface, a bottom surface opposite to the top surface, a dividing surface arranged between the top surface and the bottom surface, and a circumferential surface connecting the top surface and the bottom surface, the circumferential surface includes a first circumferential surface connecting the top surface and the dividing surface and a second circumferential surface connecting the bottom surface and the dividing surface, the first accessory mounting portion includes a first mounting port arranged on the first circumferential surface, and the second accessory mounting portion includes a second mounting port arranged on the second axial surface.

[0007] As a further improvement of one embodiment of the present invention, the first accessory mounting portion includes at least two first mounting ports arranged in parallel along the circumferential direction, the first accessory can be detachably mounted on any one of the first mounting ports, and a limiting portion is provided in the accessory mounting seat for limiting the axial and radial movement of the accessory.

[0008] As a further improvement of an embodiment of the present invention, the second accessory mounting portion includes at least two second mounting openings arranged in parallel along the circumferential direction, and the second accessory is detachably fixedly mounted on any one of the second mounting openings.

[0009] As a further improvement of one embodiment of the present invention, the second mounting opening includes two pairs of second mounting openings penetrating the second circumferential surface, the two pairs of second mounting openings are cross-shaped, and the bottom surface and the dividing surface are used to limit the axial movement of the second accessory.

[0010] As a further improvement of one embodiment of the present invention, a hollow portion connected to the first mounting port is provided between the top surface and the partition surface to form the limiting portion, the first accessory includes a matching portion matching with the limiting portion, and the top surface and the partition surface are used to limit the axial movement of the matching portion.

[0011] As a further improvement of one embodiment of the present invention, the accessory mounting seat is provided with a plurality of mounting walls spaced apart along the circumferential direction, the first mounting opening is formed between any two adjacent mounting walls, the inner end portions of the mounting walls surround the hollow portion, and when the first accessory is mounted on the accessory mounting seat, the inner end portions of the mounting walls abut against the mating portion to limit radial movement of the mating portion.

[0012] As a further improvement of an embodiment of the present invention, when the first accessory is installed in the first installation opening, the matching portion and the limiting portion are interference fit, and the matching portion and / or the limiting portion undergo elastic deformation.

[0013] As a further improvement of an embodiment of the present invention, the hardness of one of the matching portion and the limiting portion is higher than the hardness of the other.

[0014] As a further improvement of an embodiment of the present invention, the maximum width of the matching portion is greater than the width of the first installation opening, and the matching portion can be elastically deformed to pass through the first installation opening and match with the limiting portion.

[0015] As a further improvement of an embodiment of the present invention, the cross-section of the mating portion includes two symmetrical concave arcs and a convex arc connecting the two concave arcs, the distance between the two concave arcs increases from the side away from the convex arc to the side close to the convex arc, and when the first accessory is installed on the accessory mounting base, the convex arc contacts the inner end of the mounting wall, the minimum distance between the concave arcs is smaller than the width of the first mounting opening, and the chord length of the convex arc is greater than the width of the first mounting opening.

[0016] As a further improvement of an embodiment of the present invention, the cross-section of the end of the first installation opening away from the limiting portion is trapezoidal, and the width of the side close to the limiting portion is smaller than the width of the side away from the limiting portion.

[0017] As a further improvement of one embodiment of the present invention, the number of the first mounting openings is an even number, and the first mounting openings are collinear in pairs, and the inner ends of the mounting walls of the two collinear first mounting openings respectively abut against the convex arc and the two sections of the concave arc.

[0018] As a further improvement of an embodiment of the present invention, six mounting walls are circumferentially spaced apart inside the accessory mounting seat, and the distance between the ends of any two symmetrical mounting walls is smaller than the chord length of the convex arc. When the first accessory is installed to the first mounting port, the inner end of the mounting wall of the first mounting port for installing the first accessory abuts against the convex arc surface corresponding to the convex arc, and the inner end of the mounting wall of the first mounting port opposite to the first mounting port abuts against the concave arc surface corresponding to the concave arc, and the other mounting walls abut against the connection between the concave arc surface and the convex arc surface.

[0019] As a further improvement of an embodiment of the present invention, the outer contour of the accessory mounting seat is a hexagonal prism, the six side surfaces of the hexagonal prism form the circumferential surface, each of the six side surfaces is provided with the first mounting opening, and the cross section of the mounting wall is an axially symmetrical hexagon. As a further improvement of an embodiment of the present invention, the second mounting opening includes two pairs of second mounting openings that penetrate the second circumferential surface, the two pairs of second mounting openings are cross-shaped, one pair of the second mounting openings is arranged in parallel with the pair of the first mounting openings along the axial direction, and the other pair of the second mounting openings passes through the edge of the accessory mounting seat.

[0020] As a further improvement of an embodiment of the present invention, the first accessory and the second accessory are two types of accessories.

[0021] As a further improvement of an embodiment of the present invention, the first accessory is a towing hook.

[0022] As a further improvement of one embodiment of the present invention, the second accessory is an archwire accessory.

[0023] As a further improvement of an embodiment of the present invention, the archwire accessories include at least one of a palatal bead trainer, a tongue spike, a tongue grid, and an arch expansion auxiliary arch.

[0024] To achieve the above-mentioned purpose of the invention, one embodiment of the present invention further provides a shell-shaped dental instrument, which includes a shell-shaped body, the shell-shaped body having a cavity for accommodating teeth, the shell-shaped dental instrument also includes the accessory assembly described in any of the above-mentioned embodiments, and the shell-shaped body is provided with the accessory mounting seat.

[0025] As a further improvement of an embodiment of the present invention, the shell-shaped body has an accessory installation area, the accessory installation area has a bonding surface, and the bottom surface of the accessory mounting seat is bonded or welded to the bonding surface.

[0026] The accessory assembly and shell-shaped dental instrument provided by the present invention can simultaneously install two accessories on the accessory mounting seat, and can provide a variety of working modes for both accessories, thereby being able to adapt to more correction needs and treatment plans. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of a shell-shaped dental device according to an embodiment of the present invention;

[0028] Figure 2 for Figure 1 Schematic diagram of explosion of shell-shaped dental instrument shown;

[0029] Figure 3 for Figure 1 The schematic diagram of the AA cross section of the shell-shaped dental device shown;

[0030] Figure 4 for Figure 1 The accessory mounting seat shown is used to mount a schematic diagram of the first accessory structure;

[0031] Figure 5 for Figure 1 The accessory mounting base and the first accessory installation schematic diagram shown;

[0032] Figure 6 for Figure 1 A schematic cross-sectional view of a shell-shaped dental appliance BB is shown. DETAILED DESCRIPTION

[0033] The following detailed description refers to the drawings that form a part of this specification. The illustrative embodiments mentioned in the specification and the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present application. Under the enlightenment of the present application, those skilled in the art will understand that many other embodiments can be adopted, and various changes can be made to the described embodiments without departing from the main purpose and scope of protection of the present invention. It should be understood that the various aspects of the present application described and illustrated herein can be arranged, replaced, combined, separated and designed according to many different configurations, and these different configurations are within the scope of protection of the present application.

[0034] In view of the above problems of the existing shell-shaped dental instruments, the inventors of the present invention have developed a new accessory component and a shell-shaped dental instrument having the accessory component after extensive research.

[0035] See also Figures 1 to 3, schematically shows a shell-shaped dental instrument in an embodiment of the present invention, which is installed with a first accessory 30 and a second accessory 40, the first accessory 30 is a traction hook, and the second accessory 40 is an archwire accessory.

[0036] The shell-shaped dental appliance comprises a shell-shaped body 10 , which is formed with a cavity S for accommodating teeth. The shell-shaped dental appliance further comprises an accessory assembly. The accessory assembly may comprise an accessory and an accessory mounting seat 20 for mounting the accessory. The accessory mounting seat 20 may be disposed on the shell-shaped body 10 .

[0037] In this embodiment, the accessory mounting seat 20 is formed separately from the shell-shaped body 10. The shell-shaped body 10 may be provided with an accessory mounting area, and the accessory mounting seat 20 may be mounted in the accessory mounting area. The accessory mounting area may have a bonding surface 11, and the accessory mounting seat 20 may have a bottom surface 21. The bottom surface 21 and the bonding surface 11 may both be flat planes, and the bottom surface 21 of the accessory mounting seat 20 and the bonding surface 11 may be bonded or welded together.

[0038] Of course, in other embodiments, the accessory mounting seat 20 may also be integrally formed with the shell-shaped body 10 .

[0039] In this embodiment, the accessory mounting seat 20 is staggered with a first accessory mounting portion and a second accessory mounting portion on the circumferential surface 23. The first accessory mounting portion is used to install the first accessory 30, and the second accessory mounting portion is used to install the second accessory 40. The first accessory 30 and the second accessory 40 can be installed on the accessory mounting seat 20 at the same time.

[0040] The accessory mounting seat 20 may have a lingual side surface close to the lingual side and a buccal side surface close to the buccal side, and a circumferential surface 23 connecting the lingual side surface and the buccal side surface. One of the lingual side surface and the buccal side surface may be a bottom surface 21 connected to the joint surface 11 of the shell-shaped body 10, and the other may be a top surface 22. In this embodiment, the direction from the lingual side to the buccal side may be defined as an axial direction X, the direction around the axial direction X may be a circumferential direction Z, and the direction perpendicular to the axial direction X may be a radial direction Y. When the bottom surface 21 is a flat plane, the axial direction X may be perpendicular to the bottom surface 21, and the radial direction Y may be parallel to the bottom surface 21.

[0041] The first accessory mounting portion and the second accessory mounting portion are both arranged on the circumferential surface 23. The staggered arrangement of the first accessory mounting portion and the second accessory mounting portion on the circumferential surface 23 can be understood as, in the axial direction X, the first accessory mounting portion and the second accessory mounting portion are at different axial X positions.

[0042] The first accessory 30 is detachably mounted on the first accessory mounting portion, the second accessory 40 is also detachably mounted on the second accessory mounting portion, and the first accessory 30 and the second accessory 40 can be simultaneously mounted on the accessory base. In this way, when in use, the doctor can make a variety of choices based on needs, thereby improving the flexibility of the accessory components and reducing the number of times the orthodontic appliance is replaced.

[0043] For further information, see Figures 3 to 5 , showing in detail the installation structure of the first accessory 30. In this embodiment, the accessory mounting seat 20 further includes a partition surface 27 disposed between the top surface 22 and the bottom surface 21, the circumferential surface 23 may include a first circumferential surface 231 connecting the top surface 22 and the partition surface 27, and a second circumferential surface 232 connecting the bottom surface 21 and the partition surface 27, the first accessory mounting portion includes a first mounting port 24 disposed on the first circumferential surface 231, and the second accessory mounting portion includes a second mounting port 25 disposed on the second circumferential surface 232.

[0044] In one embodiment of the present invention, the first accessory mounting portion includes at least two first mounting ports 24 arranged in parallel along the circumferential direction Z. The first accessory 30 can be detachably mounted on any one of the first mounting ports 24. A limiting portion 26 is also provided in the accessory mounting seat 20 for limiting the movement of the first accessory 30 along the axial direction X and the radial direction Y.

[0045] In this embodiment, the positions of at least two first mounting openings 24 in the axial direction X are substantially the same. The opening directions of at least two first mounting openings 24 are different. During use, the doctor can choose to install the first accessory 30 in any one of the first mounting openings 24. Different first mounting openings 24 can provide installation positions with different working forms for the first accessory. When the first accessory 30 is installed in different first mounting openings 24, the working forms of the first accessory 30 are different. In different working forms, the magnitude and direction of the correction force generated by the same accessory are different.

[0046] During use, the doctor can adjust the installation position of the first accessory according to the patient's treatment plan, and selectively install the first accessory 30 into any of the first installation openings 24, thereby adjusting the working form of the first accessory 30. In different correction steps, the doctor can also directly adjust the working form of the first accessory 30 according to the patient's treatment plan without replacing the shell-shaped body 10.

[0047] The shell-shaped dental instrument provided in this embodiment has an accessory mounting seat 20 that provides a first mounting port 24 with at least two working modes for the first accessory 30, which can reduce the number of times the shell-shaped body is replaced.

[0048] In this way, when using the shell-shaped dental instrument, the doctor can select the most suitable angle to install the first attachment 30 according to the patient's condition to obtain the best correction force.

[0049] In the present embodiment, the first accessory 30 is a traction hook. The first accessory 30 may include a rod portion, and the rod portion may include a working end and an assembly end. The working end may be provided with a hook head, and the assembly end may be inserted into the first mounting port 24 and fixed to the accessory mounting seat 20. The traction hook may be connected to an elastic member to apply traction. The magnitude and direction of the applied traction force may change depending on the direction of the traction hook. By providing a plurality of first mounting ports 24 with different opening directions in the circumferential direction Z, installation positions of working forms in different directions may be provided for the traction hook. The doctor may flexibly adjust the installation direction of the traction hook according to the patient's tooth arrangement and treatment plan without replacing the shell-like body 10, thereby adjusting the direction and magnitude of the force applied by the traction member.

[0050] Further, a hollow portion communicating with the first mounting port 24 may be provided between the top surface 22 and the partition surface 27, the hollow portion forms a limiting portion 26, and the first accessory 30 may include a matching portion 31 matching with the limiting portion 26. When the first accessory 30 is mounted on the accessory mounting seat 20, the matching portion 31 matches with the limiting portion 26, the matching portion 31 is placed in the hollow portion, and the top surface 22 and the partition surface 27 can be used to limit the matching portion 31 from moving along the axial direction X, that is, to limit the first accessory 30 from moving along the axial direction X.

[0051] The accessory mounting seat 20 is provided with a plurality of mounting walls 29 at intervals along the circumferential direction Z, and a first mounting opening 24 is formed between any two adjacent mounting walls 29. The inner end portions 291 of the mounting walls 29 surround the hollow portion, and the limiting portion 26 may include the inner end portions 291 of the mounting walls 29. When the first accessory 30 is mounted on the accessory mounting seat 20, the inner end portions 291 of the mounting walls 29 abut against the matching portion 31 to limit the radial Y movement of the matching portion 31.

[0052] In this embodiment, the matching portion 31 may have a bottom surface, a top surface opposite to the bottom surface, and a side surface connecting the bottom surface and the top surface. The bottom surface and the top surface of the matching portion 31 may be flat surfaces. When the first accessory 30 is mounted on the accessory mounting seat 20, the bottom surface of the matching portion 31 is parallel to and in contact with the partition surface 27 of the accessory mounting seat 20, and the top surface of the matching portion 31 is parallel to and in contact with the top surface of the accessory mounting seat 20, thereby limiting the matching portion 31 from moving in the axial direction X; the inner end 291 of the mounting wall 29 abuts against the side surface of the matching portion 31, thereby limiting the matching portion 31 from moving in the radial direction Y. That is, by providing the hollow portion to form the limiting portion 26, the first accessory 30 can be limited in the axial direction X and the radial direction Y at the same time.

[0053] When the first accessory 30 is fixedly installed in the first installation opening, the matching portion 31 and the limiting portion 26 are interference-fitted, and the matching portion 31 and / or the limiting portion 26 can be elastically deformed.

[0054] In this embodiment, the hardness of one of the matching portion 31 and the limiting portion 26 is higher than the hardness of the other, so that the installation and disassembly of the accessory can be facilitated, and the one with lower hardness between the matching portion 31 and the limiting portion 26 is more likely to undergo elastic deformation to form an interference fit.

[0055] The first accessory 30 is limited to move relative to the accessory mounting seat 20 by the interference fit of the matching portion 31 and the limiting portion 26. The matching portion 31 can be provided at the assembly end of the rod portion of the first accessory 30. When the first accessory 30 is fixedly mounted in the first mounting opening 24, part of the rod portion can be inserted into the first mounting opening 24, the rod portion can be loosely fitted with the first mounting opening 24, the extension direction of the rod portion is the same as the extension direction of the first mounting opening 24, and the first mounting opening 24 can only play a directional role. At the same time, the matching portion 31 and the limiting portion 26 are interference-fitted to limit the movement of the first accessory 30 relative to the accessory mounting seat 20, thereby fixing the first accessory 30 in the first mounting opening 24.

[0056] Furthermore, in one embodiment of the present invention, the maximum width of the matching portion 31 is greater than the width of the first installation opening, and the matching portion 31 can be elastically deformed to pass through the first installation opening 24 and match with the limiting portion 26 .

[0057] In this embodiment, when installing the first accessory 30 to the first installation opening 24, the first accessory 30 can be inserted into the first installation opening 24 and a force can be applied toward the inside of the first installation opening 24 to push the first accessory 30 into the first installation opening 24. Since the width of the matching portion 31 is greater than the width of the first installation opening 24, the matching portion 31 undergoes elastic deformation until the matching portion 31 enters the limiting portion 26 at the other end of the first installation opening 24. The matching portion 31 and the limiting portion 26 are interference-fitted, and the matching portion 31 still undergoes elastic deformation, but the elastic deformation amount is reduced. At this time, unless a large outward pulling force is applied to the first accessory 30, the first accessory 30 will not move. During use, the force applied to the first accessory 30, such as the traction force applied to the traction hook, often forms a certain angle with the rod of the traction member, and does not apply a force along the extension direction of the rod to the traction hook, and the traction force is small, and the first accessory 30 will not be directly pulled out of the first installation opening 24.

[0058] After completing this correction step, the doctor applies an outward pulling force to the first accessory 30, and the matching portion 31 continues to deform elastically and comes out through the first installation opening 24. When performing the next correction step, the doctor can install the first accessory 30 in other first installation openings and adjust the installation position and correction force of the first accessory 30 according to the patient's tooth arrangement and treatment plan.

[0059] In this embodiment, the side surface of the mating portion 31 includes concave arc surfaces 312 that are symmetrical at both ends and a convex arc surface 311 connecting the two concave arc surfaces 312. The distance between the two concave arc surfaces 312 increases from the side away from the convex arc surface 311 to the side close to the convex arc surface 311. When the first accessory 30 is installed on the accessory mounting base, the convex arc surface 311 contacts the inner end 291 of the mounting wall 29.

[0060] The mating portion 31 may be an axisymmetric figure, and the axis of symmetry may pass through the center of the convex arc surface 311. The chord length of the convex arc of the convex arc surface 311 may be greater than the width of the first installation opening 24, and the minimum distance between the two concave arc surfaces 312 may be less than the width of the first installation opening 24.

[0061] The convex arc surface 311 side can be the working end of the first accessory 30, and the concave arc surface 312 side can be the assembly end of the first accessory 30, that is, the end of the first accessory 30. When the first accessory 30 is installed on the accessory installation base, the first accessory 30 is inserted into the first installation opening 24 from the concave arc surface 312 side, and the distance between the two concave arc surfaces 312 of the matching portion 31 gradually increases. The concave arc surface 312 can play a guiding role during the insertion process, making it easier to insert the matching portion 31 into the first installation opening 24. In the process of removing the first accessory 30, the convex arc surface 311 plays a guiding role, making it easier to pull the first accessory 30 out of the installation opening.

[0062] In this embodiment, the cross section of the end of the first installation opening 24 away from the limiting portion 26 is trapezoidal, and the width of the trapezoidal shape on the side close to the limiting portion 26 is smaller than the width on the side away from the limiting portion 26. It can be understood that the opening of the first installation opening 24 is in a trumpet shape that expands outward, so that it is easier to insert the first accessory 30 into the first installation opening 24.

[0063] Furthermore, in one embodiment of the present invention, the number of the first mounting openings 24 is an even number, and the first mounting openings 24 are collinear in pairs, and the inner side ends 291 of the mounting walls 29 of the two collinear first mounting openings 24 respectively abut against the convex arc surface 311 and the two concave arc surfaces 312. Both sides of the matching portion 31 can be simultaneously inserted into a pair of oppositely disposed first mounting openings 24.

[0064] In this embodiment, when the number of the first mounting openings 24 is 2, the first accessory 30 can have two working modes, and in the two working modes, the relative angle of the first accessory 30 is 180°. The first accessory 30 can be inserted from one first mounting opening 24. When the first accessory 30 is inserted into the first mounting opening 24, the matching portion 31 and the limiting portion 26 match, and the end of the first accessory 30 is inserted into another first mounting opening 24 that is colinear with the first mounting opening 24. Of course, the accessory can also be inserted from another first mounting opening 24. When the matching portion 31 and the limiting portion 26 match, the end of the accessory is inserted into the first mounting opening 24.

[0065] In this way, the stability of the accessory installation can be improved. At the same time, the installation walls 29 of the two opposite first installation openings 24 are used for limiting at the same time, and the overall structure is simpler.

[0066] In this embodiment, the accessory mounting seat 20 may be provided with six first mounting openings 24, and the six first mounting openings 24 may be arranged along the circumferential direction Z. Six mounting walls 29 may be arranged in the accessory mounting seat 20 at intervals along the circumferential direction Z, and a first mounting opening 24 is formed between any two adjacent mounting walls 29. The limiting portion 26 includes an inner end portion 291 of the mounting wall 29. When the first accessory 30 is mounted on the mounting seat, the inner end portion 291 of the mounting portion abuts against the matching portion 31 to limit the movement of the first accessory 30 in the radial direction Y. The distance between the ends of any two symmetrical mounting walls 29 is less than the chord length of the convex arc.

[0067] When the first accessory 30 is mounted on the accessory mounting seat 20, the inner end 291 of the mounting wall 29 of the first mounting opening 24 for mounting the first accessory 30 abuts against the convex arc surface 311, the inner end 291 of the mounting wall 29 of the opposite first mounting opening 24 abuts against the concave arc surface 312, and the other mounting walls 29 abut against the connection between the concave arc surface 312 and the convex arc surface 311. Thus, the inner wall ends of the six mounting parts can limit the matching part 31.

[0068] The distance between the ends of the two symmetrical mounting walls 29 is smaller than the chord length of the convex arc. Thus, when the mating portion 31 is mated with the limiting portion 26 , the two symmetrical mounting walls 29 press against the mating portion 31 to cause elastic deformation of the mating portion 31 , and the mating portion 31 and the limiting portion 26 are interference fit.

[0069] In this embodiment, the cross section of the mounting wall 29 may be an axisymmetric hexagon. The outer contour of the accessory mounting seat 20 may be a hexagonal prism, and the six sides of the hexagonal prism form a circumferential surface 23, and each of the six sides is provided with a first mounting opening 24. The symmetry axis of the cross section of the mounting wall 29 may pass through two symmetrical edges of the hexagonal prism.

[0070] In this embodiment, the bottom surface 21 of the accessory mounting seat 20 can be pasted or welded to the outer surface of the shell body 10, and the center of the top surface 22 can be provided with an observation hole 28. The observation hole 28 can be directly opposite to the area of ​​the limiting portion 26, and the observation hole 28 can be used to observe whether the accessory is installed in place.

[0071] For further information, see Figure 6, illustrating the installation structure of the archwire accessories. In one embodiment of the present invention, the second installation openings 25 include two pairs of second installation openings 25 penetrating the second circumferential surface 232, the two pairs of second installation openings 25 are cross-shaped, and the bottom surface 21 and the partition surface 27 are used to limit the movement of the second accessory 40 along the axial direction X. Among the two pairs of second installation openings 25, one pair of the second installation openings 25 can be arranged in parallel with the pair of first installation openings 24 along the axial direction, and the other pair of second installation openings 25 can pass through the edge of the accessory mounting seat 20.

[0072] The first accessory 30 and the second accessory 40 can be two different types of accessories. The first accessory 30 can be a traction hook, and the second accessory 40 can be an archwire accessory. The archwire accessory includes at least one of a palatal bead trainer, a tongue spike, a tongue grid, and an auxiliary arch for arch expansion. When the archwire accessory is installed on the accessory mounting seat 20, the archwire passes through a pair of second mounting openings 25, and the end of the archwire can be bent to limit the position or be limited by a plug such as a clip to prevent the archwire accessory from falling out of the second mounting opening 25.

[0073] In summary, the accessory assembly and shell-shaped dental instrument provided by the present invention have an accessory mounting seat 20 that can simultaneously mount two accessories, and each accessory can be selectively provided with a variety of working modes, and can adapt to more correction steps during use.

[0074] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0075] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. An accessory assembly, comprising an accessory mounting seat, characterized in that: The accessory mounting seat is staggered with a first accessory mounting portion and a second accessory mounting portion on a circumferential surface. The first accessory mounting portion is used to mount a first accessory, and the second accessory mounting portion is used to mount a second accessory. The first accessory and the second accessory can be mounted on the accessory mounting seat at the same time.

2. The accessory assembly according to claim 1, wherein: The accessory mounting seat includes a top surface, a bottom surface opposite to the top surface, a dividing surface arranged between the top surface and the bottom surface, and a circumferential surface connecting the top surface and the bottom surface, the circumferential surface includes a first circumferential surface connecting the top surface and the dividing surface and a second circumferential surface connecting the bottom surface and the dividing surface, the first accessory mounting portion includes a first mounting port arranged on the first circumferential surface, and the second accessory mounting portion includes a second mounting port arranged on the second circumferential surface.

3. The accessory assembly according to claim 2, wherein: The first accessory mounting portion includes at least two first mounting openings arranged in parallel along the circumferential direction, and the first accessory can be detachably mounted on any one of the first mounting openings. A limiting portion is arranged in the accessory mounting seat to limit the axial and radial movement of the accessory.

4. The accessory assembly according to claim 2, wherein: The second accessory mounting portion includes at least two second mounting openings arranged in parallel along the circumferential direction, and the second accessory is detachably fixedly mounted on any one of the second mounting openings.

5. The accessory assembly according to claim 4, characterized in that The second mounting openings include two pairs of second mounting openings penetrating the second circumferential surface, the two pairs of second mounting openings are in a cross shape, and the bottom surface and the partition surface are used to limit the axial movement of the second accessory.

6. The accessory assembly according to claim 3, characterized in that A hollow portion connected to the first mounting port is provided between the top surface and the partition surface to form the limiting portion. The first accessory includes a matching portion that matches the limiting portion. The top surface and the partition surface are used to limit the axial movement of the matching portion.

7. The accessory assembly according to claim 6, wherein: The accessory mounting seat is provided with a plurality of mounting walls spaced apart along the circumferential direction, and the first mounting opening is formed between any two adjacent mounting walls. The inner end portions of the mounting walls surround the hollow portion, and the limiting portion includes the inner end portions of the mounting walls. When the first accessory is mounted on the accessory mounting seat, the inner end portions of the mounting walls abut against the matching portion to limit radial movement of the matching portion.

8. The accessory assembly according to claim 7, wherein: When the first accessory is installed in the first installation opening, the matching portion and the limiting portion are interference-fitted, and the matching portion and / or the limiting portion are elastically deformed.

9. The accessory assembly according to claim 8, wherein: The hardness of one of the matching portion and the limiting portion is higher than the hardness of the other.

10. The accessory assembly according to claim 8, wherein: The maximum width of the matching portion is greater than the width of the first installation opening, and the matching portion can be elastically deformed to pass through the first installation opening and match with the limiting portion.

11. The accessory assembly according to claim 10, wherein: The mating portion includes a bottom surface, a top surface opposite to the bottom surface, and a side surface connecting the top surface and the bottom surface. The side surface of the mating portion includes two symmetrical concave arc surfaces and a convex arc surface connecting the two concave arc surfaces. The distance between the two concave arc surfaces increases from the side away from the convex arc surface to the side close to the convex arc surface. When the first accessory is installed on the accessory mounting base, the convex arc surface contacts the inner end portion of the mounting wall. The minimum distance between the concave arc surfaces is less than the width of the first mounting opening, and the chord length of the convex arc of the convex arc surface is greater than the width of the first mounting opening.

12. The accessory assembly according to claim 11, wherein: The cross section of the end of the first installation opening away from the limiting portion is trapezoidal, and the width of the side close to the limiting portion is smaller than the width of the side away from the limiting portion.

13. The accessory assembly according to claim 11, wherein: The number of the first mounting openings is an even number, and the first mounting openings are collinear in pairs, and the inner ends of the mounting walls of the two collinear first mounting openings respectively abut against the convex arc surface and the two sections of the concave arc surface.

14. The accessory assembly according to claim 13, wherein: Six mounting walls are arranged at intervals along the circumferential direction inside the accessory mounting seat, and the distance between the ends of any two symmetrical mounting walls is smaller than the chord length of the convex arc. When the first accessory is installed to the first mounting port, the inner end of the mounting wall of the first mounting port for installing the first accessory abuts against the convex arc surface, and the inner end of the mounting wall of the opposite first mounting port abuts against the concave arc surface, and the other mounting walls abut against the connection between the concave arc surface and the convex arc surface.

15. The accessory assembly of claim 14, wherein: The outer contour of the accessory mounting seat is a hexagonal prism, the six side surfaces of the hexagonal prism form the circumferential surface, each of the six side surfaces is provided with the first mounting opening, and the cross section of the mounting wall is an axisymmetric hexagon.

16. The accessory assembly of claim 15, wherein: The second mounting openings include two pairs of second mounting openings penetrating the second circumferential surface, the two pairs of second mounting openings are cross-shaped, one pair of the second mounting openings is axially arranged in parallel with a pair of the first mounting openings, and the other pair of the second mounting openings passes through the edge of the accessory mounting seat.

17. The accessory assembly of claim 2, wherein: The first attachment and the second attachment are two types of attachments.

18. The accessory assembly of claim 17, wherein: The first accessory is a towing hook.

19. The accessory assembly of claim 17, wherein: The second accessory is an archwire accessory.

20. The accessory assembly of claim 19, wherein: The archwire accessories include at least one of a palatal bead trainer, a tongue spike, a tongue grid, and an arch expansion auxiliary arch.

21. A shell-shaped dental appliance, comprising a shell-shaped body, wherein the shell-shaped body has a cavity for accommodating a tooth, wherein: It also includes the accessory assembly as described in any one of claims 1-20, wherein the shell-shaped body is provided with the accessory mounting seat.

22. The shell-shaped dental device according to claim 21, characterized in that The shell-shaped main body has an accessory installation area, the accessory installation area has a bonding surface, and the bottom surface of the accessory installation seat is bonded or welded to the bonding surface.

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