Trimmer of tooth retainer

Abstract

The utility model discloses a trimmer of a tooth retainer. The trimmer of the tooth retainer comprises a main scissor module and an auxiliary scissor module, the main scissor module comprises a main handle, a main scissor body and a main scissor head, the main handle is connected with the main scissor head through the main scissor body, and a bending angle is formed between the main scissor body and the main scissor head; the auxiliary scissor module comprises an auxiliary handle, an auxiliary scissor body and an auxiliary scissor head, the auxiliary handle is connected with the auxiliary scissor head through the auxiliary scissor body, and a bending angle is formed between the auxiliary scissor body and the auxiliary scissor head; and the auxiliary rod is connected with the auxiliary handle. According to the embodiment of the invention, the large handle design is adopted, so that the shearing efficiency is improved; various tools such as scissors, a crowbar and a file are integrated, the structure is compact, storage and carrying are convenient, the working efficiency is improved, and the practicability of the tools is improved.

Description

Technical Field

[0001] This utility model relates to the field of dental medical device technology, specifically to a trimmer for a tooth retainer. Background Technology

[0002] Dental retainers are devices worn to consolidate the effects of orthodontic treatment for malocclusion.

[0003] Currently, most medical institutions use the following process for making retainers: 1. Molding: The plaster model is fixed on a molding machine, and a transparent plastic sheet is heated until softened and then quickly pressed down to wrap the plaster model. 2. Disassembly: The mold and plastic sheet are separated using a pry bar. 3. Trimming: The plastic sheet is manually cut using scissors to fit the user's gums. 4. Polishing: The cut surfaces are smoothed using a polishing machine. This process is tedious, time-consuming, and labor-intensive. Furthermore, due to the special nature of medical devices, strict requirements are placed on precision and surface finish, demanding high skill from the maker. Careless operation can easily affect the quality of the finished product.

[0004] In summary, existing trimmers suffer from technical problems such as cumbersome operation, time and labor costs, and reduced trimming quality. Utility Model Content

[0005] The purpose of this application is to overcome the above-mentioned technical deficiencies and propose a trimmer for tooth retainers, which solves the technical problems of cumbersome operation, time-consuming and labor-intensive operation, and the impact on trimming quality in the prior art.

[0006] To achieve the above-mentioned technical objectives, this application adopts the following technical solution:

[0007] This application provides a trimmer for a dental retainer, comprising a main scissor module and a secondary scissor module:

[0008] The main scissor module includes a main handle, a main blade, and a main blade head. The main handle is connected to the main blade head through the main blade, and a bending angle is formed between the main blade and the main blade head. The length of the main handle is greater than the sum of the lengths of the main blade and the main blade head.

[0009] A secondary scissor module includes a secondary handle, a secondary blade, and a secondary blade head. The secondary handle is connected to the secondary blade head via the secondary blade, and a bending angle is formed between the secondary blade and the secondary blade head. The main blade and the secondary blade are rotatably connected via a rotating shaft.

[0010] An auxiliary rod, the front end of which is connected to the secondary handle, and the end of which extends along a side away from the secondary blade and at least partially protrudes from the secondary handle. The portion of the auxiliary rod protruding from the secondary handle is flat and has two opposing surfaces, one of which is a smooth surface and the other surface is provided with a plurality of arrayed file teeth.

[0011] In some embodiments of this application, the secondary handle has a receiving groove on the side facing the main handle, and one end of the auxiliary rod is detachably inserted into the receiving groove.

[0012] In some embodiments of this application, the auxiliary rod and the insertion end face of the receiving groove are provided with a groove, and the bottom of the groove is provided with file marks; wherein, the bottom of the groove is arranged at an angle and the angle between it and the central axis of the auxiliary rod is an acute angle.

[0013] In some embodiments of this application, the front end of the auxiliary rod is rotatably connected to the secondary handle and has a first state in which it is received between the secondary handle and the main handle, and a second state in which its end protrudes from the secondary handle.

[0014] In some embodiments of this application, the main blade and the main handle are coplanar, the main blade head and the main blade have an arc transition, the secondary blade and the secondary handle are coplanar, and the secondary blade head and the secondary blade head have an arc transition.

[0015] In some embodiments of this application, the bending angle between the main blade head and the main blade body is an obtuse angle, and the bending angle between the secondary blade head and the secondary blade body is an obtuse angle.

[0016] In some embodiments of this application, the secondary cutter head is provided with a serrated structure on the inner side facing the main cutter head, and / or the main cutter head is provided with a serrated structure on the inner side facing the secondary cutter head.

[0017] In some embodiments of this application, the length of the main handle is greater than twice the sum of the lengths of the main blade and the main blade head, and the length of the secondary handle is greater than twice the sum of the lengths of the secondary blade and the secondary blade head.

[0018] In some embodiments of this application, the bottom of the secondary handle protrudes beyond the bottom of the main handle, and the protruding direction of the secondary handle is away from the rotation axis.

[0019] In some embodiments of this application, the sum of the lengths of the main blade and the main blade head is 2cm to 3cm, the length of the main handle is 7cm to 8cm, the sum of the lengths of the secondary blade and the secondary blade head is 2cm to 3cm, and the length of the secondary handle is 8cm to 9cm.

[0020] Compared with the prior art, the beneficial technical effects of the technical solution provided in this application include:

[0021] This embodiment of the application employs a large handle design, providing a larger grip area, reducing pressure on the palm and fingers, improving comfort, increasing the contact area with the hand, providing better grip stability, and providing a longer lever arm, so that the scissors require less force when cutting, improving cutting efficiency; the auxiliary rod is designed with a flat structure to pry up the retainer if it is wrapped too tightly, facilitating the separation of the retainer from the mold; the auxiliary rod is also designed with file teeth to grind and polish burrs generated when trimming the retainer. This device integrates multiple tools such as scissors, pry bar, and file, with a compact structure, easy to store and carry, improving work efficiency and the practicality of the tools. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this application, the accompanying drawings used in the embodiments will be briefly described below:

[0023] Figure 1 This is a schematic diagram of the structure of a trimmer for a dental retainer provided in an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the structure of the auxiliary rod provided in an embodiment of this application;

[0025] Figure 3 yes Figure 1 Side view at point P in the middle.

[0026] Figure label:

[0027] Main scissor module 1, main handle 11, main blade 12, main blade head 13

[0028] Secondary scissor module 2, secondary handle 21, secondary blade 22, secondary blade head 23.

[0029] Auxiliary rod 3, file teeth 31, file marks 32. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0031] Those skilled in the art will understand that, in this specification, the term "comprising" is an open-ended expression, meaning that the stated feature is present but other features are excluded. Directional terms such as "upper," "lower," "left," and "right" refer to exemplary directions based on the accompanying drawings. Features specified as "first" or "second" implicitly include one or more of that feature. Singular expressions can also be used in plural forms. "Multiple" means two or more. The terms "installed," "connected," and "linked" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection via an intermediate medium, and it can be a connection within two components. Furthermore, "linked" can include wireless connections.

[0032] The purpose of this application is to overcome the above-mentioned technical deficiencies and propose a trimmer for tooth retainers, which solves the technical problems of cumbersome operation, time-consuming and labor-intensive operation, and the impact on trimming quality in the prior art.

[0033] To achieve the above-mentioned technical objectives, this application adopts the following technical solution:

[0034] This application provides a trimmer for a dental retainer, such as Figures 1-3 As shown, Figure 1 This is a schematic diagram of the structure of a trimmer for a dental retainer provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the auxiliary rod provided in an embodiment of this application; Figure 3 yes Figure 1 Side view at point P in the middle.

[0035] A trimmer for a dental retainer includes a main scissor module 1 and a secondary scissor module 2.

[0036] The main scissor module 1 includes a main handle 11, a main blade 12, and a main blade head 13. The main handle 11 is connected to the main blade head 13 through the main blade 12. A bending angle is formed between the main blade 12 and the main blade head 13. The length of the main handle 11 is greater than the sum of the lengths of the main blade 12 and the main blade head 13.

[0037] The secondary scissor module 2 includes a secondary handle 21, a secondary blade 22, and a secondary blade head 23. The secondary handle 21 is connected to the secondary blade head 23 through the secondary blade 22. A bending angle is formed between the secondary blade 22 and the secondary blade head 23. The main blade 12 and the secondary blade 22 are rotatably connected through a rotating shaft.

[0038] This application embodiment adopts a large handle design, providing a larger grip area, reducing pressure on the palm and fingers, improving comfort, increasing the contact area with the hand, providing better grip stability, and providing a longer lever arm, so that the scissors require less force when cutting, thus improving cutting efficiency.

[0039] In some embodiments of this application, one end of the auxiliary rod 3 is connected to the secondary handle 21, and the other end extends along the side opposite to the secondary blade head 23 and at least partially protrudes from the secondary handle 21. The portion of the auxiliary rod 3 protruding from the secondary handle 21 is flat and has two opposing surfaces, one of which is a smooth surface and the other surface is provided with a plurality of arrayed file teeth 31.

[0040] The file teeth 31, acting as a polishing structure, can be used to polish the edges of the retainer, removing burrs and making the retainer smoother and more comfortable. This design allows users to directly use the polishing structure to finish the retainer's edges after cutting, without needing to change tools or accessories.

[0041] The polished structure is integrated with the rest of the scissors, making the tool more compact and reducing the need to carry multiple tools.

[0042] The sanding structure design allows users to directly use the same tool for sanding after cutting, reducing steps and improving work efficiency. Because the tool integrates sanding functionality, users can reduce the number of items they need to carry, increasing convenience.

[0043] The auxiliary rod features a flat structure that can be used to lift up areas where the retainer is too tightly wrapped, facilitating separation of the retainer from the mold. It also has file-like teeth for polishing and removing burrs generated during retainer trimming. The scissors tool integrates multiple functions such as cutting, polishing, and prying. Thanks to the design of the auxiliary rod 3 and the polishing structure, users can complete a series of operations without changing tools.

[0044] This application's embodiments, by setting a bending angle between the blade head and the blade body, help to precisely control the cutting angle, making the cutting more accurate, especially in situations requiring delicate operation. Optimizing the lever effect of the scissors results in a more even distribution of force during cutting, improving cutting efficiency. Simultaneously, the large handle design provides a larger grip area, reducing pressure on the palm and fingers, improving comfort, increasing the contact area with the hand, providing better grip stability, and offering a longer lever arm, allowing the scissors to require less force during cutting, thus improving cutting efficiency.

[0045] In some embodiments of this application, the secondary handle 21 has a receiving groove on the side facing the main handle 11, and one end of the auxiliary rod 3 is detachably inserted into the receiving groove.

[0046] Specifically, the receiving groove extends along the side opposite to the secondary cutter head 23, the bottom of the secondary handle 21 has a through hole, one end of the auxiliary rod 3 is inserted into the receiving groove of the secondary handle 21, and the other end of the auxiliary rod 3 passes through the through hole of the secondary handle 21.

[0047] In some embodiments of this application, the front end of the auxiliary rod 3 is rotatably connected to the secondary handle 21 and has a first state in which it is received between the secondary handle 21 and the main handle 11, and a second state in which its end protrudes from the secondary handle 21.

[0048] One end of the auxiliary rod 3 is connected to the top of the secondary handle 21, and the other end passes through a through hole at the bottom of the secondary handle 21. This two-point fixation design enhances the stability of the secondary handle 21 while providing additional support.

[0049] The auxiliary rod 3 can be fixed, detachably connected to the secondary handle 21, or rotatably connected to the side of the secondary handle 21.

[0050] When the auxiliary rod 3 is rotatably connected to the secondary handle 21, it can protrude from the bottom of the secondary handle 21 as an auxiliary operation tool, or it can be rotated to be stored and overlapped with the secondary handle 21.

[0051] When the auxiliary rod 3 is detachably connected to the secondary handle 21, the secondary handle 21 has an opening on the side facing the main handle 11. This design facilitates the installation and adjustment of the auxiliary rod 3. The through hole at the bottom of the secondary handle 21 allows the auxiliary rod 3 to pass through, thereby enabling the connection and fixation of the auxiliary rod 3.

[0052] In this embodiment, the secondary blade 22 is supported by the secondary handle 21 and the auxiliary rod 3. The secondary handle 21 and the auxiliary rod 3 are detachably connected. While satisfying the basic trimming function, the auxiliary rod 3 and the pry bar structure provide a variety of additional functions, including lifting, making it suitable for more working scenarios.

[0053] The user holds the main handle 11 and the secondary handle 21 and cuts the retainer by opening and closing the rotating shaft.

[0054] When it is necessary to adjust and remove the retainer from the mold, the user can use the flat structure at the end of the auxiliary rod 3 to pry up the retainer portion, thereby loosening the retainer from the mold and preventing the retainer from being too tightly wrapped around the mold, making it difficult to remove. It can also be used as a pry bar to pry open the object and for polishing with the integrated file.

[0055] The design of the auxiliary rod 3 ensures that it will not interfere with the normal use of the scissors when not in use, and can be quickly converted into a file or pry bar when needed.

[0056] The Auxiliary Stick 3 integrates multiple tools such as a file and pry bar, reducing the number of tools that need to be carried and improving work efficiency. Thanks to its multi-functional integrated design, the tools are more compact, making them easier to store and carry. Users can quickly switch between different tools without releasing the handle, simplifying the operation process.

[0057] In some embodiments of this application, the auxiliary rod 3 has grooves on its insertion end face and sidewall of the receiving groove, and the bottom of the groove has file marks 32. The cross-section of the bottom of the groove is arc-shaped. The bottom of the groove is inclined and forms an acute angle with the central axis of the auxiliary rod 3.

[0058] Specifically, the auxiliary rod 3 has an inclined groove on its end face facing the receiving groove. The groove extends to the side wall connected to the end face. The inner wall of the groove is provided with multiple parallel file lines 32. Compared with the planar file teeth 31 in the above embodiment, the edge of the retainer is embedded in the groove. The file lines 32 in the groove can polish both the front and back surfaces and the side wall of the retainer edge at the same time.

[0059] In some embodiments of this application, the main blade 12 is coplanar with the main handle 11, the main blade head 13 is connected to the main blade 12 by an arc, the secondary blade 22 is coplanar with the secondary handle 21, and the secondary blade head 23 is connected to the secondary blade head 23 by an arc.

[0060] In some embodiments of this application, the bending angle between the main blade head 13 and the main blade body 12 is an obtuse angle, and the bending angle between the secondary blade head 23 and the secondary blade body 22 is an obtuse angle.

[0061] The main blade 12 and the secondary blade 22 are rotatably connected by a rotating shaft, which enables the opening and closing action of the scissors.

[0062] The main blade 12 and the main blade head 13 form a bending angle, usually an obtuse angle, which provides better cutting angle and control.

[0063] The main blade 12 and the main handle 11 are coplanar, and the main blade head 13 and the main blade 12 are connected by an arc. This design can reduce resistance during cutting and improve cutting smoothness.

[0064] A bending angle is also formed between the secondary blade 22 and the secondary blade head 23, which is usually an obtuse angle, in order to facilitate precise cutting.

[0065] The secondary blade 22 and the secondary handle 21 are coplanar, and the secondary blade head 23 and the secondary blade 22 also have an arc transition, which also helps to improve cutting efficiency.

[0066] The angled design helps to precisely control the cutting angle, making cutting more accurate, especially in delicate operations. The large handle design provides a longer lever arm, requiring less force to cut and improving cutting efficiency. Optimized leverage and a smooth transition design make cutting more efficient.

[0067] Both the main blade 12 and the secondary blade 22 have an arc-shaped opening on one side, with the opening facing the secondary handle 21. This design allows the blade to fit more closely to the shape of the retainer during cutting, providing a smoother cutting motion.

[0068] When the main blade 12 and the secondary blade 22 are closed for shearing, the arc-shaped cutting edge can better guide the material through the shears, reducing the squeezing and damage to the material, thus achieving more precise and clean shearing.

[0069] The curved cutting edge helps reduce burrs generated during shearing because it provides a continuous cutting motion rather than a sharp shear point.

[0070] The curved blade design improves cutting quality, reduces burrs and unevenness after retainer trimming, and makes the retainer more comfortable and aesthetically pleasing. Because the blade design better conforms to the shape of the retainer, it reduces damage to the retainer during cutting, extending its lifespan. The curved blade also allows for smoother cutting, reducing operator effort and improving trimming efficiency.

[0071] In some embodiments of this application, the secondary blade 22 is provided with a serrated structure on the inner side facing the main blade 12.

[0072] In some embodiments of this application, the main blade 12 is provided with a serrated structure on the inner side facing the secondary blade 22.

[0073] Serrated structures are often used to enhance shearing force, especially when working with harder or more ductile materials. The serrations can grip and penetrate the material, resulting in more efficient shearing.

[0074] When the scissors close to cut, one or both of the main blade 12 and the secondary blade 22 have serrations. The serrated structure first grips the material in the holder, and then, through a further closing action, the serrations penetrate the material to achieve cutting. This helps provide additional gripping force during cutting, especially at the beginning of the cut, helping to prevent material slippage and improve cutting efficiency.

[0075] The serrated structure significantly enhances the cutting force of scissors, allowing them to penetrate hard or tough materials more easily. The serrations help to better control the cutting process, reducing slippage and thus improving cutting precision. The serrations grip the material, reducing slippage during cutting, especially when handling smooth or irregularly shaped materials. Due to the increased cutting force and reduced slippage, operators can complete cutting tasks faster, increasing work efficiency. The serrations also help to distribute the cutting force, reducing direct impact on the blade, potentially extending the lifespan of the scissors.

[0076] In some embodiments of this application, a carving blade is provided on the outer side of the main blade 12 facing away from the main blade 12.

[0077] By setting a carving blade on the outside of the main blade 12, the scissors tool can not only be used for cutting, but also for fine operations such as carving and engraving.

[0078] After the outer side of the retainer is trimmed, the inner side needs to be scored due to limited space. Users can easily switch the scissors to the scoring mode without changing tools, which improves work efficiency.

[0079] The carving blade is integrated with the main blade 12, making the tool more compact and reducing the need to carry multiple tools.

[0080] The design of the carving blade allows users to easily switch to carving mode without complicated operating steps.

[0081] Scissors offer both cutting and scratching functions, making them suitable for a wider range of tasks. Users can perform different operations without changing tools, reducing steps and improving efficiency. Because the tool integrates multiple functions, users can carry fewer items, enhancing convenience.

[0082] In some embodiments of this application, the length of the main handle 11 is greater than twice the sum of the lengths of the main blade 12 and the main blade head 13, and the length of the secondary handle 21 is greater than twice the sum of the lengths of the secondary blade 22 and the secondary blade head 23.

[0083] According to the lever principle, when the lever arm (the distance from the fulcrum to the point of application of the force) is greater than the lever arm (the distance from the fulcrum to the point of application of the force), the lever can achieve the effect of saving effort. In this design, the distance between the bottom of the handle and the rotation axis is greater than the distance between the tip of the blade and the rotation axis, forming a force-saving lever.

[0084] During the cutting process, the operator applies force through the handle. Due to the lever's force-saving characteristic, the actual force acting on the blade is less than the force on the handle, thus reducing the operator's labor intensity.

[0085] Thanks to the lever design, the operator can operate more easily when cutting, reducing hand fatigue and improving comfort.

[0086] The lever design significantly reduces the operator's physical exertion during the shearing process, making prolonged operation more comfortable. By reducing the force required, operators can complete shearing tasks faster, improving work efficiency.

[0087] In some embodiments of this application, the bottom of the secondary handle 21 protrudes beyond the bottom of the main handle 11, and the protruding direction of the secondary handle 21 is away from the rotation axis.

[0088] This design results in a height difference between the two handles, with one handle being higher than the other.

[0089] This design takes ergonomics into account, allowing the varying handle heights to better accommodate different users' hand shapes and grip habits.

[0090] The higher handle accommodates the user's thumb, while the lower handle is suitable for accommodating four fingers. This design allows the user to position their fingers more naturally when holding the tool, reducing hand fatigue.

[0091] The height difference between the two handles allows users to adjust their hand position more flexibly when operating the scissors, adapting to different cutting angles and forces.

[0092] The height difference between the two handles makes for a more comfortable grip and reduces hand fatigue during extended use. With the thumb positioned on the higher handle, it provides better grip stability and helps with precise control of the scissors.

[0093] The larger handle provides better support for four fingers, offering a more stable grip and helping users control the scissors more accurately.

[0094] The height difference between the two handles allows users to adjust their hand position more flexibly to accommodate different cutting angles and forces.

[0095] The difference in cavity size between the two handles makes for a more comfortable grip and reduces hand fatigue during prolonged use. Enhanced grip stability: Because four fingers are positioned on the larger handle, it provides better grip stability and helps in precise control of the scissors.

[0096] In some embodiments of this application, the sum of the lengths of the main blade 12 and the main blade head 13 is 2cm to 3cm, the length of the main handle 11 is 7cm to 8cm, the sum of the lengths of the secondary blade 22 and the secondary blade head 23 is 2cm to 3cm, and the length of the secondary handle 21 is 8cm to 9cm.

[0097] Optionally, the auxiliary rod 3, in its working state, protrudes from the secondary handle 21 with a length of 2.5cm to 3.5cm, a width of 0.5cm to 1cm, and a thickness of less than 0.3cm.

[0098] Specifically, the combined length of the blade and the tip is 2.56cm, the main handle 11 is 8cm long, the secondary handle 21 is 9cm long, the inner width of the main handle 11 and the secondary handle 21 is 2.8cm, and the auxiliary rod 3 protrudes from the secondary handle 21 in the working state by 3.2cm in length, 0.75cm in width, and 0.1cm in thickness.

[0099] Compared with the prior art, the beneficial technical effects of the technical solution provided in this application include:

[0100] This application's embodiments, by setting a bending angle between the blade head and the blade body, help to precisely control the cutting angle, making the cutting more accurate, especially in situations requiring delicate operation. Optimizing the lever effect of the scissors results in a more even distribution of force during cutting, improving cutting efficiency. Simultaneously, the large handle design provides a larger grip area, reducing pressure on the palm and fingers, improving comfort, increasing the contact area with the hand, providing better grip stability, and offering a longer lever arm, allowing the scissors to require less force during cutting, thus improving cutting efficiency.

[0101] Those skilled in the art will understand that the steps, measures, and schemes in the various operations, methods, processes, and procedures discussed in this application can be alternated, modified, rearranged, decomposed, combined, or deleted.

[0102] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Any other corresponding changes and modifications made based on the technical concept of this application should be included within the scope of protection of the claims of this application.

Claims

1. A trimmer for a dental retainer, characterized in that, include: The main scissor module includes a main handle, a main blade, and a main blade head. The main handle is connected to the main blade head through the main blade, and a bending angle is formed between the main blade and the main blade head. The length of the main handle is greater than the sum of the lengths of the main blade and the main blade head. A secondary scissor module includes a secondary handle, a secondary blade, and a secondary blade head. The secondary handle is connected to the secondary blade head via the secondary blade, and a bending angle is formed between the secondary blade and the secondary blade head. The main blade and the secondary blade are rotatably connected via a rotating shaft. An auxiliary rod, the front end of which is connected to the secondary handle, and the end of which extends along a side away from the secondary blade and at least partially protrudes from the secondary handle. The portion of the auxiliary rod protruding from the secondary handle is flat and has two opposing surfaces, one of which is a smooth surface and the other surface is provided with a plurality of arrayed file teeth.

2. The trimmer for a dental retainer according to claim 1, characterized in that, The secondary handle has a receiving groove on the side facing the main handle, and one end of the auxiliary rod can be detachably inserted into the receiving groove.

3. The trimmer for a dental retainer according to claim 2, characterized in that, The auxiliary rod has a groove on the end face of its insertion end into the receiving groove, and the bottom of the groove has file marks; wherein the bottom of the groove is arranged at an angle and the angle between it and the central axis of the auxiliary rod is an acute angle.

4. The trimmer for a dental retainer according to claim 1, characterized in that, The front end of the auxiliary rod is rotatably connected to the secondary handle and has a first state in which it is housed between the secondary handle and the main handle, and a second state in which its end protrudes from the secondary handle.

5. The trimmer for a dental retainer according to claim 1, characterized in that, The main blade and the main handle are coplanar, and the main blade head and the main blade body have an arc transition. The secondary blade and the secondary handle are coplanar, and the secondary blade head and the secondary blade head have an arc transition.

6. The trimmer for a dental retainer according to claim 5, characterized in that, The bending angle between the main blade head and the main blade body is an obtuse angle, and the bending angle between the secondary blade head and the secondary blade body is also an obtuse angle.

7. The trimmer for a dental retainer according to claim 1, characterized in that, The secondary cutter head has a serrated structure on its inner side facing the main cutter head, and / or the main cutter head has a serrated structure on its inner side facing the secondary cutter head.

8. The trimmer for a dental retainer according to claim 1, characterized in that, The length of the main handle is greater than twice the sum of the lengths of the main blade and the main blade head, and the length of the secondary handle is greater than twice the sum of the lengths of the secondary blade and the secondary blade head.

9. The trimmer for a dental retainer according to claim 1, characterized in that, The bottom of the secondary handle protrudes beyond the bottom of the main handle, and the protrusion direction of the secondary handle is away from the rotation axis.

10. A trimmer for a dental retainer according to claim 1, characterized in that, The sum of the lengths of the main blade and the main blade head is 2cm to 3cm, the length of the main handle is 7cm to 8cm, the sum of the lengths of the secondary blade and the secondary blade head is 2cm to 3cm, and the length of the secondary handle is 8cm to 9cm.

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