Self-adaptive dental pulp file

Abstract

The invention particularly relates to a self-adaptive dental pulp file, which comprises a mounting seat, which is configured to be detachably connected with a rotating end of an electric rotating tool; the glue removing shaft comprises a shaft body part and a first glue removing part made of a flexible material, one end of the shaft body part is connected with the end face of one end of the mounting seat, and one end of the first glue removing part is connected with the other end of the shaft body part; the first glue cleaning part comprises a cluster of first glue cleaning hairs which are coaxially arranged with the shaft body part; from the direction of the mounting seat to the direction of the first glue cleaning part, the cross sectional area of the first glue cleaning hair is gradually reduced until one end, far away from the mounting seat, of the first glue cleaning hair is of a sharp structure; one end of the guide spring is connected with the mounting seat, and the glue cleaning shaft is sleeved with the guide spring; the self-adaptive dental pulp file is configured at the rotating speed of 8000 RPM to 12000 RPM so as to promote the first gutta-percha cleaning hair to clean the gutta-percha in the root canal.

Description

Technical Field

[0001] This invention relates to the field of gutta-percha removal technology in root canal retreatment, and particularly to an adaptive pulp file. Background Technology

[0002] Root canal retreatment is a complex and challenging clinical procedure in the field of endodontics. Its core objective is to safely and thoroughly remove the original filling material (mainly gutta-percha points and sealants) from the root canal to address the problem of failed primary root canal treatment, while preserving the healthy dentin structure to the greatest extent possible and avoiding excessive cutting and perforation of the root canal walls.

[0003] Currently, the main clinical methods for removing old filling materials from root canals include using hand files, ultrasonic instruments, and chemical solvents. Hand files rely heavily on the operator's experience and feel, resulting in relatively low efficiency. Furthermore, they are prone to instrument breakage or canal wall damage when dealing with curved or calcified root canals. Ultrasonic instruments use high-frequency vibrations to assist in removing filling materials, but their range of action is limited, and they are not effective at cleaning deep or curved areas of the root canal, potentially generating a large amount of debris and increasing the risk of root canal blockage. While chemical solvents can soften gutta-percha, their action time is long, and they are not thoroughly cleansing of the root canal walls, while also posing a potential risk of irritating the periapical tissues.

[0004] The aforementioned existing techniques generally suffer from numerous problems in practical applications, including low efficiency, high operator fatigue, easy debris blockage, poor cleaning effect on the apical region of curved root canals, and potential perforation risks. Especially when dealing with complex root canals that are curved, calcified, or contain broken instruments, the success rate of existing methods is difficult to guarantee. Therefore, in root canal retreatment, existing techniques struggle to thoroughly and effectively remove old filling materials from complex root canals while ensuring operational efficiency, dentin structural integrity, and safety. Summary of the Invention

[0005] To solve, or at least partially solve, the above-mentioned technical problems, the present invention provides an adaptive pulp file.

[0006] This invention provides an adaptive pulp file, comprising a mounting base, a cleaning shaft, and a guide spring. The mounting base is configured to be detachably connected to the rotating end of an electric rotary tool. The cleaning shaft includes a shaft body and a first cleaning portion made of a flexible material. One end of the shaft body is connected to one end face of the mounting base, and one end of the first cleaning portion is connected to the other end of the shaft body. The first cleaning portion includes a cluster of first cleaning bristles, which are coaxially arranged with the shaft body. From the direction of the mounting base towards the direction of the first cleaning portion, the cross-sectional area of ​​the first cleaning bristles gradually decreases until the end of the first cleaning bristles away from the mounting base becomes a pointed structure. One end of the guide spring is connected to the mounting base and sleeved on the cleaning shaft. The adaptive pulp file is configured to rotate at a speed of 8000 RPM to 12000 RPM to cause the first cleaning bristles to clean the gutta-percha in the root canal.

[0007] Optionally, the length of the guide spring is less than or equal to the length of the adhesive strip shaft.

[0008] Optionally, the first adhesive removal section further includes multiple clusters of second adhesive removal bristles, which are evenly distributed around the axis of the first adhesive removal bristles.

[0009] Optionally, the guide spring has a reduced diameter portion at one end away from the mounting base; the outer diameter of the reduced diameter portion gradually decreases from the direction of the mounting base toward the direction of the first adhesive removal portion.

[0010] Optionally, the guide spring has a first notch at one end away from the mounting base; a portion of the first adhesive portion passes through the first notch to the outside of the guide spring.

[0011] Optionally, the guide spring includes a first elastic portion, a middle portion, and a second elastic portion arranged sequentially, the middle portion having a second notch; the middle portion includes: a C-shaped first sub-segment, a C-shaped second sub-segment, and a third sub-segment, one end of the first sub-segment being connected to the first elastic portion and having a receiving space for accommodating the shaft portion; one end of the second sub-segment being connected to the second elastic portion and having a receiving space for accommodating the shaft portion; the first sub-segment and the second sub-segment are spaced apart and coaxially arranged; one end of the third sub-segment is connected to the other end of the first sub-segment, and the other end of the third sub-segment is connected to the other end of the second sub-segment; the second notch is formed between the first sub-segment, the second sub-segment, and the third sub-segment.

[0012] Optionally, the adaptive pulp file further includes a second cleaning part disposed on the shaft portion, the second cleaning part being made of a flexible material; the second cleaning part includes a fourth cleaning bristle, one end of the fourth cleaning bristle being disposed on the shaft portion; when the guide spring is compressed, the other end of the fourth cleaning bristle passes through the second notch to the outside of the guide spring.

[0013] Optionally, the shaft body is made of nickel-titanium alloy; the first and second adhesive removal parts are made of fiber nanomaterials.

[0014] This invention provides an adaptive pulp file, comprising a mounting base, a cleaning shaft, and a guide spring. The mounting base is configured to be detachably connected to the rotating end of an electric rotary tool. The cleaning shaft includes a shaft body and a first cleaning section made of a flexible material. One end of the shaft body is connected to one end face of the mounting base, and one end of the first cleaning section is connected to the other end of the shaft body. The first cleaning section includes multiple clusters of second cleaning bristles, which are evenly distributed around the axis of the shaft body. The distance between two symmetrically arranged clusters of second cleaning bristles gradually decreases until the ends of these two clusters of second cleaning bristles away from the shaft body form a pointed structure. One end of the guide spring is connected to the mounting base and sleeved on the cleaning shaft. The adaptive pulp file is configured to rotate at a speed of 8000 RPM to 12000 RPM to facilitate the second cleaning bristles in cleaning the gutta-percha in the root canal.

[0015] Optionally, a sandwich is formed between the multiple clusters of second adhesive bristles and the end face of the shaft portion away from the mounting base; the first adhesive portion includes multiple clusters of third adhesive bristles, which are evenly distributed around the axis of the shaft portion and are all located within the sandwich; the distance between two symmetrically arranged clusters of third adhesive bristles gradually decreases until the ends of these two clusters of third adhesive bristles away from the shaft portion form a pointed structure; the height of the third adhesive bristles is lower than the height of the second adhesive bristles.

[0016] Optionally, the guide spring has a first notch at one end away from the mounting base; a portion of the first adhesive portion passes through the first notch to the outside of the guide spring.

[0017] Optionally, the guide spring includes a first elastic portion, a middle portion, and a second elastic portion arranged sequentially, the middle portion having a second notch; the middle portion includes: a C-shaped first sub-segment, a C-shaped second sub-segment, and a third sub-segment, one end of the first sub-segment being connected to the first elastic portion and having a receiving space for accommodating the shaft portion; one end of the second sub-segment being connected to the second elastic portion and having a receiving space for accommodating the shaft portion; the first sub-segment and the second sub-segment are spaced apart and coaxially arranged; one end of the third sub-segment is connected to the other end of the first sub-segment, and the other end of the third sub-segment is connected to the other end of the second sub-segment; the second notch is formed between the first sub-segment, the second sub-segment, and the third sub-segment.

[0018] Optionally, the adaptive pulp file further includes a second cleaning part disposed on the shaft portion, the second cleaning part being made of a flexible material; the second cleaning part includes a fourth cleaning bristle, one end of the fourth cleaning bristle being disposed on the shaft portion; when the guide spring is compressed, the other end of the fourth cleaning bristle passes through the second notch to the outside of the guide spring.

[0019] Compared to existing technologies, this embodiment incorporates a first cleaning section composed of fiber nanowires on the cleaning shaft of the adaptive pulp file. Utilizing the impact and fatigue resistance of the fiber nanowires, the risk of breakage in the first cleaning section is avoided. This section also allows for rapid cleaning of gutta-percha within the root canal without damaging the canal wall. This not only ensures the integrity and safety of the dentin structure but also effectively removes gutta-percha from complex root canals. Furthermore, this embodiment utilizes a guide spring in conjunction with the cleaning shaft. Compression of the guide spring exposes the working tip of the first cleaning section, facilitating control over the depth of the working tip's entry into the root canal. Attached Figure Description

[0020] To more clearly illustrate the embodiments of the present invention, the relevant accompanying drawings will be briefly described below. It should be understood that the drawings described below are only for illustrating some embodiments of the present invention, and those skilled in the art can obtain many other technical features and connections not mentioned herein based on these drawings.

[0021] Figure 1 This is a schematic diagram of the structure of one embodiment of an adaptive pulp file of the present invention; Figure 2 This is a partial structural diagram of an embodiment of the adaptive pulp file of the present invention. Figure 1 ; Figure 3 This is a cross-sectional schematic diagram of an embodiment of the adhesive removal shaft of an adaptive pulp file according to the present invention. Figure 1 ; Figure 4 This is a cross-sectional schematic diagram of an embodiment of the adhesive removal shaft of an adaptive pulp file according to the present invention. Figure 2 ; Figure 5 This is a cross-sectional schematic diagram of an embodiment of the adhesive removal shaft of an adaptive pulp file according to the present invention. Figure 3 ; Figure 6 This is a cross-sectional schematic diagram of an embodiment of the adaptive pulp file cleaning roller of the present invention. Figure 4 ; Figure 7 This is a cross-sectional schematic diagram of an embodiment of the adaptive pulp file cleaning roller of the present invention. Figure 5 ; Figure 8This is a cross-sectional schematic diagram of an embodiment of the adaptive pulp file cleaning roller of the present invention. Figure 6 ; Figure 9 This is a partial schematic diagram of an embodiment of a guide spring for an adaptive pulp file according to the present invention; Figure 10 This is a schematic diagram of one embodiment of the guide spring for an adaptive pulp file of the present invention; Figure 11 This is a partial structural diagram of an embodiment of the adaptive pulp file of the present invention. Figure 2 .

[0022] Explanation of reference numerals in the attached figures: 1. Mounting base; 11. Clamping post; 12. Positioning plate; 13. Clamping groove; 2. Glue-cleaning shaft; 21. Shaft body; 22. First glue-cleaning part; 23. First glue-cleaning bristles; 24. Second glue-cleaning bristles; 25. Interlayer; 26. Third glue-cleaning bristles; 27. Second glue-cleaning part; 28. Fourth glue-cleaning bristles; 3. Guide spring; 30. Spring body; 31. Reducing diameter part; 32. First notch; 33. First elastic part; 34. Middle part; 35. Second elastic part; 36. First segment; 37. Second segment; 38. Third segment; 39. Second notch. Detailed Implementation

[0023] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0024] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0025] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0026] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0027] Unless otherwise stated, the term "multiple" means two or more, and "multiple groups" means two or more groups.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0029] The applicant found that existing techniques, in root canal retreatment, are insufficient to completely and effectively remove gutta-percha from complex root canals while ensuring operational efficiency, dentin structural integrity, and safety.

[0030] In view of this, the inventors of the present invention provide an adaptive pulp file to solve the above-mentioned problems. Several specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0031] First Embodiment The adaptive pulp file mentioned in this embodiment, such as Figure 1 As shown, the adaptive pulp file includes a mounting base 1, a cleaning shaft 2, and a guide spring 3. The mounting base 1 includes a clamping post 11 and a positioning plate 12. One end of the clamping post 11 is fixedly connected to one side of the positioning plate 12, and the clamping post 11 and the positioning plate 12 are arranged coaxially. The outer wall of the clamping post 11 has a clamping groove 13, which surrounds the axis of the clamping post 11.

[0032] like Figure 1As shown, the cleaning shaft 2 includes a shaft body 21 and a first cleaning part 22. The shaft body 21 is made of metal. Preferably, the shaft body is made of nickel-titanium alloy. The first cleaning part 22 is made of flexible material. Preferably, the first cleaning part 22 is made of fiber nanomaterial. One end of the shaft body 21 is fixedly connected to the other side of the positioning plate 12, and the shaft body 21 and the positioning plate 12 are coaxially arranged. One end of the first cleaning part 22 is disposed on the end face of the other end of the shaft body 21, and the other end of the first cleaning part 22 is used for cleaning gutta-percha. A guide spring 3 is sleeved on the cleaning shaft 2, and one end of the guide spring 3 is connected to the other side of the positioning plate 12. The guide spring 3 and the cleaning shaft 2 are coaxially arranged.

[0033] In this invention, the fiber nanowires are made of carbon nanotube fibers or ultra-high molecular weight polyethylene nanofibers, which gives the fiber nanowires excellent energy absorption characteristics and impact and fatigue resistance. When the adaptive pulp file of this invention rotates at high speed, the fiber nanowires absorb energy through the extension and slippage of their molecular chains, which not only avoids the risk of fiber nanowire breakage but also facilitates the cleaning of gutta-percha.

[0034] In this embodiment, the settings for the adhesive removal shaft 2 are as follows: like Figure 1 As shown, the first cleaning section 22 includes a cluster of first cleaning bristles 23, which are composed of one or more fiber nanofilaments and have a conical structure. Specifically, from the direction of the mounting base 1 towards the direction of the first cleaning section 22, the cross-sectional area of ​​the first cleaning bristles 23 gradually decreases until the end of the first cleaning bristles 23 away from the mounting base 1 becomes a pointed structure, that is, the pointed end of the first cleaning bristles 23 is the working tip of the first cleaning bristles 23, which is used to clean the gutta-percha. This cluster of first cleaning bristles 23 is coaxially arranged with the shaft section 21 to ensure the cleaning effect of the gutta-percha.

[0035] Optionally, not shown in the figure, based on the above technical solution, the length of the shaft portion 21 is greater than or equal to the length of the first adhesive removal portion 22. Specifically, the length of the shaft portion 21 is 1 / 2 to 3 / 2 of the length of the adhesive removal shaft 2, and the length of the first adhesive removal portion 22 is 1 / 3 to 1 / 2 of the length of the adhesive removal shaft 2. By utilizing the length difference between the shaft portion 21 and the first adhesive removal portion 22, the structural strength of the first adhesive removal portion 22 can be improved, thereby enhancing the adhesive removal effect of the first adhesive removal portion 22.

[0036] In this embodiment, the structure of the guide spring 3 has also been improved, as follows: Optionally, the length of the guide spring 3 is equal to the length of the adhesive removal shaft 2. Optionally, the length of the guide spring 3 is shorter than the length of the cleaning shaft 2. Specifically, the end of the first cleaning bristle 23 away from the shaft body 21 is 1mm to 2mm higher than the end of the guide spring 3 away from the mounting base 1.

[0037] Optional, such as Figure 2 As shown, the guide spring 3 has a reduced diameter portion 31 at the end away from the mounting base 1. Specifically, from the direction of the mounting base 1 toward the direction of the first adhesive removal portion 22, the outer diameter of the reduced diameter portion 31 gradually decreases until it is the same as the diameter of the end of the first adhesive removal portion 23 near the shaft portion 21.

[0038] You may choose any one of the three technical solutions mentioned above.

[0039] The exemplary usage of the adaptive pulp file disclosed in this embodiment is as follows: During root canal retreatment, the patient lies on the recliner of the dental treatment machine, and the dentist uses the electric rotary tools provided with the dental treatment machine.

[0040] like Figure 1 , Figure 2 As shown, the dentist places the clamping post 11 of the adaptive pulp file on the rotating end of the electric rotary tool. When the end face of the rotating end abuts against one side of the positioning plate 12, it indicates that the pulp file is properly assembled. Subsequently, the clamping teeth inside the electric rotary tool enter the clamping groove 13, thus completing the installation of the adaptive pulp file on the electric rotary tool. Next, the cleaning shaft 2 is inserted into the root canal. When the guide spring 3 is limited by the root canal structure, as the cleaning shaft 2 continues to extend, the guide spring 3 begins to compress, and the working tip of the first cleaning bristles 23 of the first cleaning part 22 protrudes from the guide spring 3 and contacts the gutta-percha in the root canal. The dentist starts the electric rotary tool, causing the rotating end to begin rotating at a speed of 8000 RPM to 12000 RPM. In this embodiment, the adaptive pulp file also starts rotating at a speed of 8000 RPM to 12000 RPM, and the first cleaning bristles 23 begin to rotate accordingly. The high-speed rotating first cleaning bristles 23 clean the gutta-percha in the root canal. First Guttate Cleaner 23 can quickly remove gutta-percha without damaging the root canal walls.

[0041] Compared to existing technologies, this embodiment incorporates a first cleaning section 22 composed of fiber nanowires on the cleaning shaft 2 of the adaptive pulp file. Utilizing the impact and fatigue resistance of the fiber nanowires, the risk of breakage of the first cleaning section 22 is avoided. Furthermore, the first cleaning section 22 allows for rapid cleaning of gutta-percha within the root canal without damaging the canal wall. This not only ensures the integrity and safety of the dentin structure but also effectively removes gutta-percha from complex root canals. This embodiment also utilizes a guide spring 3 in conjunction with the cleaning shaft 2. Compression of the guide spring 3 exposes the working tip of the first cleaning section 22, facilitating control over the depth of the working tip's entry into the root canal.

[0042] The first cleaning part 22 of the adaptive pulp file of the present invention is made of a flexible material, so the first cleaning part 22 can conform to the root canal to clean gutta-percha, which is the embodiment of adaptability.

[0043] Second Embodiment In the first embodiment, the inventors found that using only the first cleaning bristles 23 to clean the gutta-percha may result in poor gutta-percha cleaning effect.

[0044] In view of this, this embodiment also proposes an adaptive pulp file. The second embodiment is a further improvement based on the first embodiment, the main improvement being that the first clearing part also includes a second clearing bristle, the specific solution of which is as follows: Optional, such as Figure 1 , Figure 3 As shown, the second cleaning bristles 24 are in multiple clusters, each cluster having a conical structure. Each cluster of second cleaning bristles 24 is composed of one or more fiber nanowires. Specifically, from the direction of the mounting base 1 towards the direction of the first cleaning part 22, the cross-sectional area of ​​the second cleaning bristles 24 gradually decreases until the end of the second cleaning bristle 24 away from the mounting base 1 becomes a pointed structure, that is, the pointed end of the second cleaning bristle 24 is the working tip of the second cleaning bristle 24. The second cleaning bristles 24 are inclined, that is, the working tip of the second cleaning bristle 24 is closely attached to the working tip of the first cleaning bristle 23, thus protecting the working tip of the first cleaning bristle 23. In use, the working tip of the second cleaning bristles 24 first pre-cleans the gutta-percha, and then the first cleaning bristles 23 clean the gutta-percha after being treated by the second cleaning bristles 24, thereby improving the cleaning effect of the first cleaning part 22 on the gutta-percha. When the number of clusters of the second cleaning bristles 24 is even, the two clusters of second cleaning bristles 24 located on both sides of the axis of the first cleaning bristles 23 are symmetrically arranged. That is, these two clusters of second cleaning bristles 24 are on the same straight line as the first cleaning bristles 23. In this technical solution, multiple clusters of second cleaning bristles 24 are used to assist the first cleaning bristles 23 in cleaning gutta-percha, thereby improving the cleaning effect of the first cleaning section 22.

[0045] Optionally, not shown in the figure, based on the above technical solution, the diameter of the end of the first cleaning bristle 23 near the shaft portion 21 is 1 / 3 of the diameter of the shaft portion 21, while the diameter of the end of the second cleaning bristle 24 near the shaft portion 21 is 1 / 6 of the diameter of the shaft portion 21. By utilizing the structural strength of the second cleaning bristle 24 and the first cleaning bristle 23, the cleaning effect of gutta-percha is improved.

[0046] Optional, such as Figure 1 , Figure 3 , Figure 4As shown, based on the above technical solution, the height of the first cleaning bristles 23 is lower than the height of the second cleaning bristles 24, making the texture of the first cleaning bristles 23 harder than that of the second cleaning bristles 24. This difference in texture is used to clean the gutta-percha. In use, the multiple clusters of second cleaning bristles 24 first clean the gutta-percha. As the guide spring is further compressed, the multiple clusters of second cleaning bristles 24 bend and deform away from the axis of the first cleaning bristles 23, thereby exposing the first cleaning bristles 23 so that the first cleaning bristles 23, which are harder than the second cleaning bristles 24, can clean the gutta-percha.

[0047] You may choose any one of the three technical solutions mentioned above.

[0048] Third Embodiment This embodiment also proposes an adaptive pulp file. The difference between the third embodiment and the first embodiment lies in the structure of the first clearing section, as detailed below: Optional, such as Figure 1 , Figure 5 As shown, the first adhesive removal section 22 includes multiple clusters of second adhesive removal fibers 24, each cluster consisting of one or more fiber nanowires. These clusters of second adhesive removal fibers 24 are evenly distributed around the axis of the shaft section 21. Specifically, from the direction of the mounting base 1 towards the direction of the first adhesive removal section 22, the cross-sectional area of ​​the second adhesive removal fibers 24 gradually decreases until the end of the second adhesive removal fiber 24 furthest from the mounting base 1 forms a pointed structure; that is, the pointed end of the second adhesive removal fiber 24 is the working tip of the second adhesive removal fiber 24. All clusters of second adhesive removal fibers 24 are inclined towards the axis of the shaft section 21, and the working tips of these clusters together form the working tip of the first adhesive removal section 22. At this time, a sandwich 25 is formed between the multiple clusters of second adhesive removal fibers 24 and the end face of the shaft section 21 furthest from the mounting base 1. When in use, the working tip of the first cleaning part 22 is used to clean the gutta-percha. Since the first cleaning part 22 is composed of multiple clusters of second cleaning bristles 24, the cleaning effect of the gutta-percha is further improved by using multiple clusters of second cleaning bristles 24.

[0049] Optionally, not shown in the figure, based on the above technical solution, when the number of clusters of the second cleaning bristles 24 is even, two clusters of the second cleaning bristles 24 located on both sides of the axis of the shaft portion 21 are symmetrically arranged. That is, these two clusters of the second cleaning bristles 24 are on the same straight line as the axis of the shaft portion 21. In the first cleaning portion 22, the distance between the two symmetrically arranged clusters of the second cleaning bristles 24 gradually decreases until the distance between the two clusters of the second cleaning bristles 24 is 0. When the distance between the two clusters of the second cleaning bristles 24 is 0, the ends of the two clusters of the second cleaning bristles 24 away from the shaft portion 21 form a pointed structure, and the working tips of all the second cleaning bristles 24 together form the working tip of the first cleaning portion 22. In this technical solution, multiple clusters of the second cleaning bristles 24 are used to clean the gutta-percha, which improves the cleaning effect of the gutta-percha.

[0050] Optionally, not shown in the figure, based on the above technical solution, the diameter of the end of the second cleaning bristles 24 near the shaft portion 21 is 1 / 7 to 1 / 3 of the diameter of the shaft portion 21. By increasing the diameter of the end of the second cleaning bristles 24 near the shaft portion 21 and utilizing the difference between the diameter of the multiple clusters of second cleaning bristles 24 and the diameter of the shaft portion 21, the structural strength of the first cleaning portion 22 is further increased, thereby improving the cleaning effect of gutta-percha.

[0051] You may choose any one of the three technical solutions mentioned above.

[0052] Fourth embodiment This embodiment also proposes an adaptive pulp file. The fourth embodiment is a further improvement based on the third embodiment. The main improvement is that the first clearing part 22 also includes a third clearing bristle 26. The specific solution is as follows: Optional, such as Figure 1 , Figure 6As shown, the third adhesive fibers 26 are arranged in multiple clusters, each cluster consisting of one or more fiber nanofilaments. These clusters of third adhesive fibers 26 are evenly distributed around the axis of the shaft portion 21, and are all located within the interlayer 25 between the shaft portion 21 and the second adhesive fibers 24. Specifically, from the direction of the mounting base 1 towards the direction of the first adhesive portion 22, the cross-sectional area of ​​the third adhesive fibers 26 gradually decreases until one end of the third adhesive fiber 26 away from the mounting base 1 forms a pointed structure; that is, the pointed end of the third adhesive fiber 26 is the working tip. The multiple clusters of third adhesive fibers 26 are all inclined towards the axis of the shaft portion 21, and the working tips of the multiple clusters of third adhesive fibers 26 and the working tips of the multiple clusters of second adhesive fibers 24 together form the working tip of the first adhesive portion 22. At this point, the multiple clusters of third cleaning bristles 26 form a sandwich 25 between the second cleaning bristles 24 and the shaft portion 21, dividing the space into two. During use, the working tips of the multiple clusters of third cleaning bristles 26 work in conjunction with the working tips of the second cleaning bristles 24 to clean the gutta-percha, improving the cleaning effect.

[0053] Optional, such as Figure 6 As shown, based on the above technical solution, when the number of clusters of the third cleaning bristles 26 is even, two clusters of the third cleaning bristles 26 are symmetrically arranged on both sides of the axis of the shaft portion 21. That is, these two clusters of the third cleaning bristles 26 are on the same straight line as the axis of the shaft portion 21. In the first cleaning portion 22, the distance between the two symmetrically arranged clusters of the third cleaning bristles 26 gradually decreases until the distance between the two clusters of the third cleaning bristles 26 is 0. When the distance between the two clusters of the third cleaning bristles 26 is 0, the ends of the two clusters of the third cleaning bristles 26 away from the shaft portion 21 form a pointed structure, and the working tips of all the third cleaning bristles 26 and all the working tips of the second cleaning bristles 24 together constitute the working tips of the first cleaning portion 22. In this technical solution, the working tips of multiple clusters of the third cleaning bristles 26 assist the working tips of the second cleaning bristles 24 in cleaning the gutta-percha, thereby improving the cleaning effect of the gutta-percha.

[0054] Optionally, not shown in the figure, based on the above technical solution, the diameter of the end of the second cleaning bristle 24 near the shaft portion 21 is 1 / 7 of the diameter of the shaft portion 21, and the diameter of the end of the third cleaning bristle 26 near the shaft portion 21 is 1 / 7 of the diameter of the shaft portion 21. By placing the third cleaning bristle 26 in the interlayer between the second cleaning bristle 24 and the shaft portion 21, and by limiting the diameter of the second cleaning bristle 24 and the diameter of the third cleaning bristle 26, the structural strength of the first cleaning portion 22 is further increased, thereby improving the cleaning effect of the gutta-percha.

[0055] Optional, such as Figure 7As shown, based on the above technical solution, the height of the third cleaning bristles 26 is lower than the height of the second cleaning bristles 24, making the texture of the third cleaning bristles 26 harder than that of the second cleaning bristles 24. This difference in texture is used to clean the gutta-percha. In use, the multiple clusters of second cleaning bristles 24 first clean the gutta-percha. As the guide spring is further compressed, the multiple clusters of second cleaning bristles 24 bend and deform away from the axis of the shaft 21, thus exposing the third cleaning bristles 26. This allows the harder third cleaning bristles 26 to then clean the gutta-percha.

[0056] You may choose any one of the four technical solutions mentioned above.

[0057] Fifth Embodiment This embodiment also proposes an adaptive pulp file. The fifth embodiment is a further improvement based on the third or fourth embodiment, with the main improvement being the guide spring. The specific solution is as follows: like Figure 8 , Figure 9 As shown, among the multiple clusters of second adhesive fibers 24, one cluster of second adhesive fibers 24 is higher than the other clusters. Correspondingly, the guide spring 3 has a first notch 32 at the end away from the mounting base 1, and the first notch 32 is located on one side of the axis of the guide spring 3. Specifically, the guide spring 3 includes a spring body 30 and a first elastic portion 33 with the first notch 32. One end of the spring body 30 is fixedly connected to the other side of the mounting plate 12, and the other end of the spring body 30 is connected to one end of the first elastic portion 33. The first elastic portion 33 includes a first sub-segment 36, a second sub-segment 37, and a third sub-segment 38. The first sub-segment 36 has a C-shaped structure and has a receiving space for accommodating the first adhesive fiber 22. The second sub-segment 37 has a C-shaped structure and has a receiving space for accommodating the first adhesive fiber 22. The first sub-segment 36 and the second sub-segment 37 are spaced apart and coaxially arranged. The first sub-segment 36 is coaxially arranged with the shaft body portion 21. The first segment 36 is located between the spring body 30 and the second segment 37. Both ends of the first segment 36 are connected to the spring body 30 via a third segment 38. Simultaneously, both ends of the first segment 36 are connected to both ends of the second segment 37 via the third segment 38. After the first segment 36 is connected to the second segment 37 via the third segment 38, the notch in the first segment 36 and the notch in the second segment 37 together form the first notch 32 of the first elastic part 33. This first notch 32 can also be considered as the first notch 32 of the guide spring 3. In use, as the dental file rotates, a cluster of second gutta-percha bristles 24, which is higher than the other clusters of second gutta-percha bristles 24, passes through the first notch 32 to the outside of the guide spring 3 and cleans the gutta-percha. This arrangement increases the cleaning range of the second gutta-percha bristles.

[0058] Sixth Embodiment This embodiment also proposes an adaptive pulp file. The sixth embodiment is a further improvement based on any one of the first to fourth embodiments, with the main improvement being: like Figure 10 , Figure 11 As shown, the guide spring 3 includes a first elastic portion 33, a middle portion 34, and a second elastic portion 35. From the direction of the mounting base 1 towards the direction of the first adhesive removal portion 22, the first elastic portion 33, the middle portion 34 with a second notch 39, and the second elastic portion 35 are arranged sequentially. The first elastic portion 33 is connected to the second elastic portion 35 through the middle portion 34. Specifically, the middle portion 34 includes a first sub-segment 36, a second sub-segment 37, and a third sub-segment 38. The first sub-segment 36 has a C-shaped structure and a receiving space for accommodating the shaft portion 21. The second sub-segment 37 also has a C-shaped structure and a receiving space for accommodating the shaft portion 21. The first sub-segment 36 and the second sub-segment 37 are spaced apart and coaxially arranged, and the first sub-segment 36 is coaxially arranged with the shaft portion 21. One end of the first segment 36 is fixedly connected to the end of the first elastic part 33 near the second elastic part 35. One end of the second segment 37 is fixedly connected to the end of the second elastic part 35 near the first elastic part 33. One end of the third segment 38 is fixedly connected to the other end of the first segment 36, and the other end of the third segment 38 is fixedly connected to the other end of the second segment 37. After the first segment 36 is connected to the second segment 37 through the third segment 38, the accommodating space of the first segment 36 and the accommodating space of the second segment 37 together form the second notch 39 of the middle part 34. This second notch 39 can also be regarded as the second notch 39 of the guide spring 3.

[0059] like Figure 11 As shown, the adaptive pulp file also includes a second cleaning portion 27, which is disposed on the shaft portion 21. The second cleaning portion 27 and the second notch 39 are both located on the same side of the axis of the shaft portion 21. The second cleaning portion 27 is disposed close to the mounting base 1. The second cleaning portion 27 is made of a flexible material. Preferably, the second cleaning portion 27 is made of a fiber nanomaterial. The second cleaning portion 27 includes a cluster of fourth cleaning fibers 28, which is composed of one or more fiber nanofilaments. One end of the fourth cleaning fiber 28 is fixedly connected to the outer wall of the shaft portion 21, and the other end of the fourth cleaning fiber 28 is oriented away from the mounting base 1. The fourth cleaning fiber 28 is located between the shaft portion 21 and the guide spring 3.

[0060] When not in use, the guide spring 3 restrains the fourth gutta-percha bristles 28 located on the shaft portion 21, confining them between the guide spring 3 and the shaft portion 21. At this time, the fourth gutta-percha bristles 28 are located at the end of the second notch 39 near the mounting base 1. During use, the operator inserts the gutta-percha shaft 2 into the root canal, and the guide spring 3 is compressed. The compressed guide spring 3 causes the second notch 39 to move towards the mounting base 1, while the other end of the fourth gutta-percha bristles 28 passes through the second notch 39 to the outside of the guide spring 3, cleaning the gutta-percha within the root canal as the adaptive pulp file rotates at high speed.

[0061] Finally, it should be noted that those skilled in the art will understand that many technical details have been presented in the embodiments of the present invention to facilitate a better understanding of the invention. However, even without these technical details and various variations and modifications based on the above embodiments, the technical solutions claimed in the claims of the present invention can be substantially achieved. Therefore, in practical applications, various changes in form and detail can be made to the above embodiments without departing from the spirit and scope of the present invention.

Claims

1. An adaptive pulp file, characterized in that, include: The mounting base is configured to be detachably connected to the rotating end of an electric rotary tool; A glue-removing shaft includes a shaft body and a first glue-removing part made of a flexible material. One end of the shaft body is connected to one end face of the mounting base, and one end of the first glue-removing part is connected to the other end of the shaft body. The first glue-removing part includes: A cluster of first adhesive-removing bristles is coaxially arranged with the shaft body; from the direction of the mounting base toward the direction of the first adhesive-removing part, the cross-sectional area of ​​the first adhesive-removing bristles gradually decreases until the end of the first adhesive-removing bristles away from the mounting base becomes a pointed structure. A guide spring, one end of which is connected to the mounting base and sleeved on the adhesive removal shaft; The adaptive pulp file is configured to rotate at 8000 RPM to 12000 RPM to encourage the first gutta-percha bristles to clean the gutta-percha within the root canal.

2. The adaptive pulp file according to claim 1, characterized in that, The length of the guide spring is less than or equal to the length of the adhesive strip.

3. The adaptive pulp file according to claim 1, characterized in that, The first adhesive removal section further includes: Multiple clusters of second-stage clear glue fibers are evenly distributed around the axis of the first-stage clear glue fibers.

4. The adaptive pulp file according to claim 3, characterized in that, The guide spring has a reduced diameter section at one end away from the mounting base; the outer diameter of the reduced diameter section gradually decreases from the direction of the mounting base toward the direction of the first adhesive removal section.

5. The adaptive pulp file according to any one of claims 1 to 4, characterized in that, The guide spring has a first notch at one end away from the mounting base; a portion of the first adhesive part passes through the first notch to the outside of the guide spring.

6. The adaptive pulp file according to claim 1, characterized in that, The guide spring includes a first elastic portion, a middle portion, and a second elastic portion arranged sequentially, wherein the middle portion has a second notch; the middle portion includes: The first segment is C-shaped, with one end connected to the first elastic part, and has a receiving space to accommodate the shaft part; The second segment is C-shaped, with one end connected to the second elastic part, and has a receiving space for accommodating the shaft part; the first segment and the second segment are spaced apart and coaxially arranged. The third sub-segment is connected at one end to the other end of the first sub-segment and at the other end to the other end of the second sub-segment; the second gap is formed between the first sub-segment, the second sub-segment, and the third sub-segment.

7. The adaptive pulp file according to claim 6, characterized in that, It also includes a second adhesive removal part disposed on the shaft portion, the second adhesive removal part being made of a flexible material; the second adhesive removal part includes: The fourth cleaning agent has one end located on the shaft body portion; When the guide spring is compressed, the other end of the fourth rubber bristle passes through the second notch to the outside of the guide spring.

8. The adaptive pulp file according to claim 6, characterized in that, The shaft body is made of nickel-titanium alloy material; The first and second clearing sections are made of fiber nanomaterials.

9. An adaptive pulp file, characterized in that, include: The mounting base is configured to be detachably connected to the rotating end of an electric rotary tool; A glue-removing shaft includes a shaft body and a first glue-removing part made of flexible material. One end of the shaft body is connected to one end face of the mounting base, and one end of the first glue-removing part is connected to the other end of the shaft body. The first adhesive removal section includes: Multiple clusters of second-stage adhesive fibers are evenly distributed around the axis of the shaft body. The distance between the two symmetrically arranged second clusters of clear adhesive fibers gradually decreases until one end of the two clusters of second clear adhesive fibers away from the shaft body forms a pointed structure. A guide spring, one end of which is connected to the mounting base and sleeved on the adhesive removal shaft; The adaptive pulp file is configured to rotate at 8000 RPM to 12000 RPM to encourage the second gutta-percha bristles to clean the gutta-percha within the root canal.

10. The adaptive pulp file according to claim 9, characterized in that, A layer is formed between the multiple clusters of second adhesive fibers and the end face of the shaft portion away from the mounting base; the first adhesive portion includes: Multiple clusters of third adhesive fibers are evenly distributed around the axis of the shaft body and are all located within the interlayer; the distance between two symmetrically arranged clusters of third adhesive fibers gradually decreases until the ends of these two clusters of third adhesive fibers away from the shaft body form a pointed structure; the height of the third adhesive fibers is lower than the height of the second adhesive fibers.

11. The adaptive pulp file according to any one of claims 9 to 10, characterized in that, The guide spring has a first notch at one end away from the mounting base; a portion of the first adhesive part passes through the first notch to the outside of the guide spring.

12. The adaptive pulp file according to claim 9, characterized in that, The guide spring includes a first elastic portion, a middle portion, and a second elastic portion arranged sequentially, wherein the middle portion has a second notch; the middle portion includes: The first segment is C-shaped, with one end connected to the first elastic part, and has a receiving space to accommodate the shaft part; The second segment is C-shaped, with one end connected to the second elastic part, and has a receiving space for accommodating the shaft part; the first segment and the second segment are spaced apart and coaxially arranged. The third sub-segment is connected at one end to the other end of the first sub-segment and at the other end to the other end of the second sub-segment; the second gap is formed between the first sub-segment, the second sub-segment, and the third sub-segment.

13. The adaptive pulp file according to claim 12, characterized in that, It also includes a second adhesive removal part disposed on the shaft portion, the second adhesive removal part being made of a flexible material; the second adhesive removal part includes: The fourth cleaning agent has one end located on the shaft body portion; When the guide spring is compressed, the other end of the fourth rubber bristle passes through the second notch to the outside of the guide spring.

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