An adaptive endodontic file

Abstract

The application particularly relates to an adaptive dental pulp file, comprising: a mounting seat configured to be detachably connected with a rotating end of an electric rotating tool; a gum cleaning shaft comprising a shaft body and a first gum cleaning part made of a flexible material, one end of the shaft body being connected with an end face of one end of the mounting seat, and one end of the first gum cleaning part being connected with the other end of the shaft body; the first gum cleaning part comprising: a cluster of first gum cleaning hairs coaxially arranged with the shaft body; from the direction of the mounting seat to the direction of the first gum cleaning part, the cross-sectional area of the first gum cleaning hairs gradually decreases until the end of the first gum cleaning hairs away from the mounting seat is in a pointed structure; and a guide spring connected with the mounting seat and sleeved on the gum cleaning shaft; the adaptive dental pulp file is configured to rotate at a speed of 8000 RPM to 12000 RPM to facilitate the first gum cleaning hairs to clean the dental pulp in the root canal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of root canal retreatment gutta-percha removal, and in particular to a self-adaptive endodontic file. BACKGROUND

[0002] Root canal retreatment is a complex and challenging clinical procedure in the field of endodontics. Its core goal is to safely and completely remove the original filling materials (mainly gutta-percha points and sealants) in the root canal to address the problem of failed primary root canal treatment, while maximizing the protection of healthy dentin structure and avoiding excessive cutting and perforation of the root canal wall.

[0003] Currently, the main methods for removing old filling materials in the root canal in clinical practice include the use of hand files, ultrasonic instruments, and chemical solvents. Hand file operation relies on the experience and feel of the operator, and the efficiency is relatively low. In addition, when dealing with curved or calcified root canals, it is easy to cause instrument breakage or root canal wall damage. Ultrasonic instruments can assist in removing filling materials through high-frequency vibration, but their range of action is limited, and the cleaning effect on the deep and curved areas of the root canal is not good, and a large amount of debris may be generated, increasing the risk of root canal blockage. Chemical solvents can soften gutta-percha, but their action time is long, and the cleaning effect on the root canal wall is not thorough, and there is a potential risk of irritation to the periapical tissue.

[0004] The above-mentioned prior art solutions generally have the problems of low efficiency, high operator fatigue, easy formation of debris blockage, poor cleaning effect on curved root canal apical area, and potential perforation risk, etc. in actual application. Especially when facing complex root canals that are curved, calcified, or contain broken instruments, the success rate of existing methods is difficult to effectively guarantee. Therefore, in the field of root canal retreatment, the existing technology is difficult to completely and effectively remove the old filling materials in the complex root canal while ensuring the operation efficiency, the integrity of the dentin structure, and the safety. SUMMARY

[0005] In order to solve or at least partially solve the above technical problems, the present application provides a self-adaptive endodontic file.

[0006] The application provides a self-adaptive dental pulp file, which comprises a mounting seat, a glue cleaning shaft and a guide spring, the mounting seat is configured to be detachably connected with a rotating end of an electric rotary tool; the glue cleaning shaft comprises a shaft body part and a first glue cleaning part made of flexible material, one end of the shaft body part is connected with an end face of the mounting seat, and one end of the first glue cleaning 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, the cluster of first glue cleaning hairs is coaxially arranged with the shaft body part; the cross-sectional area of the first glue cleaning hairs gradually decreases from the direction of the mounting seat to the direction of the first glue cleaning part until the end of the first glue cleaning hairs away from the mounting seat is in a pointed structure; one end of the guide spring is connected with the mounting seat and is sleeved on the glue cleaning shaft; the self-adaptive dental pulp file is configured to rotate at a speed of 8000 RPM-12000 RPM to facilitate the first glue cleaning hairs to clean the dental glue in the root canal.

[0007] Optionally, the length of the guide spring is less than the length of the glue cleaning shaft.

[0008] Optionally, the first glue cleaning part further comprises a plurality of clusters of second glue cleaning hairs, and the plurality of clusters of second glue cleaning hairs are uniformly arranged around the axis of the first glue cleaning hairs.

[0009] Optionally, the end of the guide spring away from the mounting seat is provided with a reduced diameter part, and the outer diameter of the reduced diameter part gradually decreases from the direction of the mounting seat to the direction of the first glue cleaning part.

[0010] Optionally, the end of the guide spring away from the mounting seat is provided with a first notch, and a part of the first glue cleaning part penetrates through the first notch to the outside of the guide spring.

[0011] Optionally, the guide spring comprises a first elastic part, an intermediate part and a second elastic part arranged in sequence, the intermediate part is provided with a second notch; the intermediate part comprises a C-shaped first subsegment, a C-shaped second subsegment and a third subsegment, one end of the first subsegment is connected with the first elastic part and has a containing space for containing the shaft body part, one end of the second subsegment is connected with the second elastic part and has a containing space for containing the shaft body part, the first subsegment and the second subsegment are arranged in a spaced manner and coaxially, one end of the third subsegment is connected with the other end of the first subsegment, and the other end of the third subsegment is connected with the other end of the second subsegment, and the first subsegment, the second subsegment and the third subsegment form the second notch.

[0012] Optionally, the self-adaptive dental pulp file further comprises a second glue cleaning part arranged on the shaft body part, the second glue cleaning part is made of flexible material; the second glue cleaning part comprises fourth glue cleaning hairs, one end of the fourth glue cleaning hairs is arranged on the shaft body part; when the guide spring is compressed, the other end of the fourth glue cleaning hairs penetrates through the second notch to the outside of the guide spring.

[0013] Optionally, the shaft body is made of a nickel-titanium alloy material; the first glue cleaning part and the second glue cleaning part are made of a fiber nano material.

[0014] The application provides a self-adaptive dental pulp file, which comprises a mounting seat, a glue cleaning shaft and a guide spring, the mounting seat is configured to be detachably connected with a rotating end of an electric rotary tool; the glue cleaning shaft comprises a shaft body and a first glue cleaning part made of a flexible material, one end of the shaft body is connected with an end face of the mounting seat, and one end of the first glue cleaning part is connected with the other end of the shaft body; the first glue cleaning part comprises a plurality of clusters of second glue cleaning hairs, the plurality of clusters of second glue cleaning hairs are uniformly arranged around an axis of the shaft body; the distance between the two clusters of second glue cleaning hairs symmetrically arranged gradually decreases until the two clusters of second glue cleaning hairs form a pointed structure away from the end of the shaft body; one end of the guide spring is connected with the mounting seat and is sleeved on the glue cleaning shaft; the self-adaptive dental pulp file is configured to rotate at a speed of 8000 RPM to 12000 RPM, so as to promote the second glue cleaning hairs to clean the dental cement in the root canal.

[0015] Optionally, a layer is formed between the plurality of clusters of second glue cleaning hairs and the end face of the end of the shaft body away from the mounting seat; the first glue cleaning part comprises a plurality of clusters of third glue cleaning hairs, the plurality of clusters of third glue cleaning hairs are uniformly arranged around the axis of the shaft body and are all located in the layer; the distance between the two clusters of third glue cleaning hairs symmetrically arranged gradually decreases until the two clusters of third glue cleaning hairs form a pointed structure away from the end of the shaft body; the height of the third glue cleaning hairs is lower than the height of the second glue cleaning hairs.

[0016] Optionally, the end of the guide spring away from the mounting seat is provided with a first notch; a part of the first glue cleaning part penetrates through the first notch to the outside of the guide spring.

[0017] Optionally, the guide spring comprises a first elastic part, an intermediate part and a second elastic part which are sequentially arranged, the intermediate part is provided with a second notch; the intermediate part comprises a C-shaped first subsegment, a C-shaped second subsegment and a third subsegment, one end of the first subsegment is connected with the first elastic part and has an accommodation space for accommodating the shaft body; one end of the second subsegment is connected with the second elastic part and has an accommodation space for accommodating the shaft body; the first subsegment and the second subsegment are arranged in a spaced manner and are coaxially arranged; one end of the third subsegment is connected with the other end of the first subsegment, and the other end of the third subsegment is connected with the other end of the second subsegment; the first subsegment, the second subsegment and the third subsegment form the second notch.

[0018] Optionally, the adaptive dental pulp file further comprises a second glue cleaning part arranged on the shaft body, the second glue cleaning part is made of flexible material; the second glue cleaning part comprises fourth glue cleaning hairs, one end of the fourth glue cleaning hairs is arranged on the shaft body; when the guide spring is compressed, the other end of the fourth glue cleaning hairs penetrates the second gap to the outside of the guide spring.

[0019] Compared with the prior art, the embodiment sets the first glue cleaning part composed of fiber nanofilaments on the glue cleaning shaft of the adaptive dental pulp file, and utilizes the impact resistance and fatigue resistance of the fiber nanofilaments to avoid the risk of breakage of the first glue cleaning part, and also utilizes the first glue cleaning part to quickly clean the dental glue in the root canal without damaging the root canal wall. Not only the integrity and safety of the dental structure are ensured, but also the dental glue in the complex root canal can be effectively removed. The embodiment also utilizes the compression of the guide spring and the exposure of the working tip of the first glue cleaning part through the cooperation of the guide spring and the glue cleaning shaft to facilitate the control of the depth of the working tip into the root canal. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application, the related drawings will be briefly introduced below. It can be understood that the drawings described below are only used to illustrate some embodiments of the present application, and those skilled in the art can also obtain many other technical features and connection relationships not mentioned in the text from these drawings.

[0021] Figure 1 is a structural schematic diagram of an embodiment of the adaptive dental pulp file of the present application;

[0022] Figure 2 is a partial structural schematic diagram of an embodiment of the adaptive dental pulp file of the present application Figure One ;

[0023] Figure 3 is a cross-sectional schematic diagram of an embodiment of the glue cleaning shaft of the adaptive dental pulp file of the present application Figure One ;

[0024] Figure 4 is a cross-sectional schematic diagram of an embodiment of the glue cleaning shaft of the adaptive dental pulp file of the present application Figure Two ;

[0025] Figure 5 is a cross-sectional schematic diagram of an embodiment of the glue cleaning shaft of the adaptive dental pulp file of the present application Figure Three ;

[0026] Figure 6 is a cross-sectional schematic diagram of an embodiment of the glue cleaning shaft of the adaptive dental pulp file of the present application Figure Four ;

[0027] Figure 7is a cross-sectional view of an embodiment of a self-adapting endodontic file cleaning shaft of the present invention Figure Five ;

[0028] Figure 8 is a cross-sectional view of an embodiment of a self-adapting endodontic file cleaning shaft of the present invention Figure Six ;

[0029] Figure 9 is a partial view of an embodiment of a guide spring of a self-adapting endodontic file of the present invention

[0030] Figure 10 is a view of an embodiment of a guide spring of a self-adapting endodontic file of the present invention

[0031] Figure 11 is a partial view of an embodiment of a self-adapting endodontic file of the present invention Figure Two .

[0032] BRIEF DESCRIPTION OF DRAWINGS

[0033] 1, mounting seat; 11, clamping column; 12, to the disc; 13, clamping groove; 2, cleaning shaft; 21, shaft body; 22, first cleaning part; 23, first cleaning hair; 24, second cleaning hair; 25, interlayer; 26, third cleaning hair; 27, second cleaning part; 28, fourth cleaning hair; 3, guide spring; 30, spring body; 31, reduced diameter part; 32, first notch; 33, first elastic part; 34, intermediate part; 35, second elastic part; 36, first subsegment; 37, second subsegment; 38, third subsegment; 39, second notch. DETAILED DESCRIPTION

[0034] In order to enable a more detailed understanding of the features and technical content of the present disclosure embodiments, the implementation of the present disclosure embodiments will be described in detail below with reference to the accompanying drawings, which are for reference only and do not limit the present disclosure embodiments. In the following technical description, in order to facilitate explanation, through multiple details, a sufficient understanding of the disclosed embodiments is provided. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0035] The terms "first", "second", and the like in the specification and claims of the present disclosure embodiments and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0036] 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.

[0037] 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.

[0038] Unless otherwise stated, the term "multiple" means two or more, and "multiple groups" means two or more groups.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0040] 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.

[0041] 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.

[0042] First Embodiment

[0043] 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.

[0044] like Figure 1As shown, the gum cleaning shaft 2 comprises a shaft body part 21 and a first gum cleaning part 22, and the shaft body part 21 is made of metal material. Preferably, the shaft body part is made of nickel-titanium alloy material. The first gum cleaning part 22 is made of flexible material. Preferably, the first gum cleaning part 22 is made of fiber nanometer material. One end of the shaft body part 21 is fixedly connected to the other side surface of the positioning disc 12, and the shaft body part 21 is coaxially arranged with the positioning disc 12. One end of the first gum cleaning part 22 is arranged on the other end surface of the shaft body part 21, and the other end of the first gum cleaning part 22 is used for cleaning the dental gum. The guide spring 3 is sleeved on the gum cleaning shaft 2, and one end of the guide spring 3 is connected to the other side surface of the positioning disc 12. The guide spring 3 is coaxially arranged with the gum cleaning shaft 2.

[0045] In the present application, the fiber nanometer wire is made of carbon nanometer tube fiber, or the fiber nanometer wire is made of ultra-high molecular weight polyethylene nanometer fiber, so that the fiber nanometer wire has excellent energy absorption characteristics and impact resistance and fatigue resistance. When the self-adaptive dental pulp file of the present application rotates at high speed, the fiber nanometer wire absorbs energy through the stretching and sliding of the molecular chain, which not only avoids the risk of breaking of the fiber nanometer wire, but also facilitates the cleaning of the dental gum.

[0046] In the present embodiment, the gum cleaning shaft 2 is arranged as follows:

[0047] As shown in the figure, Figure 1 The first gum cleaning part 22 comprises a cluster of first gum cleaning hairs 23, the cluster of first gum cleaning hairs 23 is composed of one or more fiber nanometer wires, and the cluster of first gum cleaning hairs 23 has a conical structure. Specifically, from the direction of the mounting seat 1 to the direction of the first gum cleaning part 22, the cross-sectional area of the first gum cleaning hair 23 gradually decreases until the end of the first gum cleaning hair 23 away from the mounting seat 1 has a pointed structure, that is, the end of the first gum cleaning hair 23 having a pointed structure is the working tip of the first gum cleaning hair 23, and the working tip is used for cleaning the dental gum. The cluster of first gum cleaning hairs 23 is coaxially arranged with the shaft body part 21 to ensure the cleaning effect of the dental gum.

[0048] Optionally, as shown in the figure, on the basis of the above technical solution, the length of the shaft body part 21 is greater than the length of the first gum cleaning part 22. Specifically, the length of the shaft body part 21 is 1 / 2~3 / 2 of the length of the gum cleaning shaft 2, and the length of the first gum cleaning part 22 is 1 / 3~1 / 2 of the length of the gum cleaning shaft 2. By using the length difference between the shaft body part 21 and the first gum cleaning part 22, the structural strength of the first gum cleaning part 22 can be improved, and thus the gum cleaning effect of the first gum cleaning part 22 can be enhanced.

[0049] In the present embodiment, the structure of the guide spring 3 is also improved, which is as follows:

[0050] Optionally, the length of the guide spring 3 is equal to the length of the gum cleaning shaft 2,

[0051] Optionally, the length of the guide spring 3 is shorter than the length of the glue cleaning shaft 2, and specifically, the end of the first glue cleaning hair 23 away from the shaft body part 21 is 1mm-2mm higher than the end of the guide spring 3 away from the mounting base 1.

[0052] Optionally, as shown in Figure 2 the end of the guide spring 3 away from the mounting base 1 is provided with a reduced diameter part 31. Specifically, from the direction of the mounting base 1 to the direction of the first glue cleaning part 22, the outer diameter of the reduced diameter part 31 gradually decreases until the same as the diameter of the end of the first glue cleaning hair 23 close to the shaft body part 21.

[0053] The above three optional technical solutions can be selected.

[0054] The exemplary use process of the self-adaptive dental pulp file disclosed in the embodiment is as follows:

[0055] When performing root canal retreatment, the patient lies on the reclining chair of the dental comprehensive treatment machine, and the doctor uses the electric rotary tool matched with the dental comprehensive treatment machine.

[0056] As shown in Figure 1 , Figure 2 the doctor sets the clamping column 11 of the self-adaptive dental 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 in-place disc 12, it indicates that the dental pulp file is assembled in place. Then the clamping teeth in the electric rotary tool enter the clamping groove 13, so that the installation of the self-adaptive dental pulp file on the electric rotary tool is completed. Then the glue cleaning shaft 2 is inserted into the root canal. When the guide spring 3 is limited by the structure of the root canal, the guide spring 3 starts to compress as the glue cleaning shaft 2 continues to be inserted. The working tip of the first glue cleaning hair 23 of the first glue cleaning part 22 is exposed from the guide spring 3 and contacts the gutta-percha in the root canal. The doctor starts the electric rotary tool and makes the rotating end start to rotate at a speed of 8000RPM-12000RPM. The self-adaptive dental pulp file of the embodiment also starts to rotate at a speed of 8000RPM-12000RPM. The first glue cleaning hair 23 starts to rotate at the same time. The high-speed rotating first glue cleaning hair 23 cleans the gutta-percha in the root canal. The first glue cleaning hair 23 can quickly clean the gutta-percha without damaging the root canal wall.

[0057] Compared with the prior art, the embodiment sets the first glue cleaning part 22 composed of fiber nanofilaments on the glue cleaning shaft 2 of the adaptive pulp file, and utilizes the impact resistance and fatigue resistance of the fiber nanofilaments to avoid the risk of breakage of the first glue cleaning part 22, and also utilizes the first glue cleaning part 22 to quickly clean the gutta-percha in the root canal without damaging the root canal wall. Not only the integrity and safety of the dentin structure are ensured, but also the gutta-percha in the complex root canal can be effectively removed. The embodiment also utilizes the compression of the guide spring 3 and the exposure of the working tip of the first glue cleaning part 22 by cooperating the guide spring 3 with the glue cleaning shaft 2 to facilitate the control of the depth of the working tip into the root canal.

[0058] The first glue cleaning part 22 of the adaptive pulp file is made of flexible material, so the first glue cleaning part 22 can adhere to the gutta-percha in the root canal cleaning, which is the embodiment of the adaptability.

[0059] Second embodiment

[0060] In the first embodiment, the inventor found that only using the first glue cleaning hair 23 to clean the gutta-percha may have the risk of poor cleaning effect.

[0061] Therefore, the embodiment also proposes an adaptive pulp file, and the second embodiment is a further improvement based on the first embodiment, and the main improvement is that the first glue cleaning part further includes a second glue cleaning hair, and the specific scheme is as follows:

[0062] Optionally, as shown in Figure 1 , Figure 3 The number of the second glue cleaning hair 24 is multiple clusters, and the multiple clusters of the second glue cleaning hair are in a conical structure. Each cluster of the second glue cleaning hair 24 is composed of one or more fiber nanofilaments. Specifically, from the direction where the mounting seat 1 is located to the direction where the first glue cleaning part 22 is located, the cross-sectional area of the second glue cleaning hair 24 gradually decreases until the end of the second glue cleaning hair 24 away from the mounting seat 1 is in a sharp structure, that is, the end of the second glue cleaning hair 24 in a sharp structure is the working tip of the second glue cleaning hair 24. The second glue cleaning hair 24 is obliquely arranged, that is, the working tip of the second glue cleaning hair 24 is arranged close to the working tip of the first glue cleaning hair 23, so that the working tip of the first glue cleaning hair 23 is protected. In use, the working tip of the second glue cleaning hair 24 first pre-cleans the gutta-percha, and then the first glue cleaning hair 23 cleans the gutta-percha treated by the second glue cleaning hair 24, thereby improving the cleaning effect of the first glue cleaning part 22 on the gutta-percha. When the number of clusters of the second glue cleaning hair 24 is even, two clusters of the second glue cleaning hair 24 on both sides of the axis of the first glue cleaning hair 23 are symmetrically arranged. That is, the two clusters of the second glue cleaning hair 24 and the first glue cleaning hair 23 are on the same straight line. In this technical solution, the multiple clusters of the second glue cleaning hair 24 assist the first glue cleaning hair 23 to clean the gutta-percha, thereby improving the cleaning effect of the first glue cleaning part 22.

[0063] Optionally, as shown in the figure, on the basis of the above technical solution, the diameter of the first glue cleaning hair 23 near one end of the shaft body part 21 is 1 / 3 of the diameter of the shaft body part 21, and the diameter of the second glue cleaning hair 24 near one end of the shaft body part 21 is 1 / 6 of the diameter of the shaft body part 21. By utilizing the structural strength of the second glue cleaning hair 24 and the first glue cleaning hair 23, the cleaning effect of the dental glue is further improved.

[0064] Optionally, as shown in the figure, Figure 1 , Figure 3 , Figure 4 On the basis of the above technical solution, the height of the first glue cleaning hair 23 is lower than the height of the second glue cleaning hair 24, which makes the texture of the first glue cleaning hair 23 harder than the texture of the second glue cleaning hair 24, and the texture difference is used to clean the dental glue. In use, the multiple clusters of the second glue cleaning hair 24 clean the dental glue first, and as the guide spring is further compressed, the multiple clusters of the second glue cleaning hair 24 will bend and deform away from the axis of the first glue cleaning hair 23, and then the first glue cleaning hair 23 is exposed, so that the first glue cleaning hair 23 with a harder texture than the second glue cleaning hair 24 cleans the dental glue.

[0065] The above three optional technical solutions can be selected.

[0066] Third embodiment

[0067] This embodiment also proposes a self-adaptive dental pulp file, and the difference between the third embodiment and the first embodiment is the structure of the first glue cleaning part. The specific scheme is as follows:

[0068] Optionally, as shown in the figure, Figure 1 , Figure 5 The first glue cleaning part 22 comprises the second glue cleaning hair 24, and the number of the second glue cleaning hair 24 is multiple clusters. Each cluster of the second glue cleaning hair 24 is composed of one or more fiber nanofilaments. The multiple clusters of the second glue cleaning hair 24 are uniformly arranged around the axis of the shaft body part 21. Specifically, from the direction of the installation seat 1 to the direction of the first glue cleaning part 22, the cross-sectional area of the second glue cleaning hair 24 gradually decreases until the end of the second glue cleaning hair 24 away from the installation seat 1 forms a pointed structure, that is, the end of the second glue cleaning hair 24 in the pointed structure is the working tip of the second glue cleaning hair 24. The multiple clusters of the second glue cleaning hair 24 are inclinedly arranged towards the axis of the shaft body part 21, and the working tips of the multiple clusters of the second glue cleaning hair 24 jointly form the working tip of the first glue cleaning part 22. At this time, the multiple clusters of the second glue cleaning hair 24 and the end face of the shaft body part 21 away from the installation seat 1 form a sandwich 25. In use, the working tip of the first glue cleaning part 22 is used to clean the dental glue. Since the first glue cleaning part 22 is composed of multiple clusters of the second glue cleaning hair 24, the cleaning effect of the dental glue is further improved.

[0069] Optionally, as shown in the figure, on the basis of the above technical solution, when the number of the second glue cleaning bristles 24 is even, the two groups of second glue cleaning bristles 24 located on both sides of the axis of the shaft body 21 are symmetrically arranged. That is, the two groups of second glue cleaning bristles 24 are on the same straight line with the axis of the shaft body 21. In the first glue cleaning part 22, the distance between the two groups of symmetrically arranged second glue cleaning bristles 24 gradually decreases until the distance between the two groups of second glue cleaning bristles 24 is 0. When the distance between the two groups of second glue cleaning bristles 24 is 0, the two groups of second glue cleaning bristles 24 form a pointed structure away from one end of the shaft body 21, and the working tips of all the second glue cleaning bristles 24 together form the working tip of the first glue cleaning part 22. In this technical solution, the multiple groups of second glue cleaning bristles 24 are used to clean the dental glue, thereby improving the cleaning effect of the dental glue.

[0070] Optionally, as shown in the figure, on the basis of the above technical solution, the diameter of the end of the second glue cleaning bristle 24 close to the shaft body 21 is 1 / 7-1 / 3 of the diameter of the shaft body 21. By increasing the diameter of the end of the second glue cleaning bristle 24 close to the shaft body 21 and using the difference between the diameter of the multiple groups of second glue cleaning bristles 24 and the diameter of the shaft body 21, the structural strength of the first glue cleaning part 22 is further increased, thereby improving the cleaning effect of the dental glue.

[0071] The above three optional technical solutions can be selected.

[0072] Fourth Embodiment

[0073] This embodiment also proposes a self-adaptive dental pulp file. The fourth embodiment is a further improvement based on the third embodiment, and the main improvement is that the first glue cleaning part 22 further includes third glue cleaning bristles 26, and the specific scheme is as follows:

[0074] Optionally, 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.

[0075] 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.

[0076] 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.

[0077] Optional, such as Figure 7As shown, the height of the third glue cleaning bristle 26 is lower than that of the second glue cleaning bristle 24, so that the texture of the third glue cleaning bristle 26 is harder than that of the second glue cleaning bristle 24, and the difference in texture is used to clean the dental glue. In use, the multiple second glue cleaning bristles 24 clean the dental glue first, and as the guide spring is further compressed, the multiple second glue cleaning bristles 24 will be bent and deformed away from the axis of the shaft body 21, and then the third glue cleaning bristles 26 are exposed, so that the third glue cleaning bristles 26 with a harder texture than the second glue cleaning bristles 24 clean the dental glue.

[0078] The above four optional technical solutions can be selected.

[0079] Fifth embodiment

[0080] This embodiment also proposes a self-adaptive dental pulp file, and the fifth embodiment is a further improvement based on the third or fourth embodiment, and the main improvement is the guide spring, and the specific scheme is as follows:

[0081] As Figure 8 , Figure 9As shown, in the multi-cluster second glue cleaning bristles 24, the height of one cluster of the second glue cleaning bristles 24 is higher than that of the other clusters. Correspondingly, the end of the guide spring 3 away from the mounting base 1 has a first notch 32, which is located on one side of the axis of the guide spring 3. Specifically, the guide spring 3 includes a spring body 30, a first elastic part 33 having the first notch 32, one end of the spring body 30 is fixedly connected to the other side surface of the positioning disc 12, and the other end of the spring body 30 is connected to one end of the first elastic part 33. The first elastic part 33 includes a first sub-section 36, a second sub-section 37, and a third sub-section 38. The first sub-section 36 has a C-shaped structure and has a receiving space for accommodating the first glue cleaning part 22. The second sub-section 37 has a C-shaped structure and has a receiving space for accommodating the first glue cleaning part 22. The first sub-section 36 and the second sub-section 37 are arranged in a spaced manner and coaxially arranged, and the first sub-section 36 is coaxially arranged with the shaft body 21. The first sub-section 36 is located between the spring body 30 and the second sub-section 37, and the two ends of the first sub-section 36 are connected to the spring body 30 through a third sub-section 38. At the same time, the two ends of the first sub-section 36 are connected to the two ends of the second sub-section 37 through a third sub-section 38. After the first sub-section 36 is connected to the second sub-section 37 through the third sub-section 38, the gap of the first sub-section 36 and the gap of the second sub-section 37 together form the first notch 32 of the first elastic part 33, which can also be regarded as the first notch 32 of the guide spring 3. In use, as the dental canal reamer rotates, one cluster of the second glue cleaning bristles 24 that is higher than the other clusters is arranged to pass through the first notch 32 to the outside of the guide spring 3 and clean the dental glue. Such an arrangement can increase the cleaning range of the second glue cleaning bristles on the dental glue.

[0082] Sixth embodiment

[0083] This embodiment also proposes a self-adaptive dental canal reamer, which is a further improvement based on any one of the first to fourth embodiments, and the main improvement is that:

[0084] As Figure 10 、 Figure 11As 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.

[0085] 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.

[0086] 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.

[0087] Finally, it should be noted that, for a better understanding of the present application, the embodiments thereof have been presented with a number of technical details. However, the skilled person in the art will appreciate that the technical solutions claimed in the claims of the present application can be substantially achieved even without these technical details and with various changes and modifications based on the above-described embodiments. Therefore, in practical applications, various changes can be made to the above-described embodiments in form and details without departing from the spirit and scope of the present application.

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 fiber nanowires. 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: A cluster of first clear adhesive fibers is coaxially arranged with the shaft body portion; Multiple clusters of second-stage adhesive fibers are evenly distributed around the axis of the first-stage adhesive fibers; From the direction of the mounting base toward the direction of the first adhesive removal part, the cross-sectional area of ​​the first adhesive removal bristles gradually decreases until the end of the first adhesive removal bristles away from the mounting base becomes a pointed structure, and the pointed structure of the first adhesive removal bristles is the working tip of the first adhesive removal bristles; the cross-sectional area of ​​the second adhesive removal bristles gradually decreases until the end of the second adhesive removal bristles away from the mounting base becomes a pointed structure, and the pointed structure of the second adhesive removal bristles is the working tip of the second adhesive removal bristles; the working tip of the second adhesive removal bristles is set close to the working tip of the first adhesive removal bristles; The height of the first adhesive bristle is lower than the height of the second adhesive bristle. 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 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.

4. The adaptive pulp file according to any one of claims 1 to 3, 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.

5. 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.

6. The adaptive pulp file according to claim 5, 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.

7. The adaptive pulp file according to claim 5, characterized in that, The shaft body is made of nickel-titanium alloy material; The second gelling section is made of fiber nanomaterials.

8. 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 fiber nanowires. 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 cleaning fibers are evenly distributed around the axis of the shaft body; the distance between two symmetrically arranged clusters of second cleaning fibers gradually decreases until the ends of these two clusters of second cleaning fibers away from the shaft body form a pointed structure, and the pointed structure of the second cleaning fibers is the working tip of the second cleaning fibers; a sandwich is formed between the multiple clusters of second cleaning fibers and the end face of the shaft body away from the mounting base. Multiple clusters of third cleaning 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 cleaning fibers gradually decreases until the ends of these two clusters of third cleaning fibers away from the shaft body form a pointed structure, and the pointed structure of the third cleaning fibers is the working tip of the third cleaning fibers; the working tips of the multiple clusters of third cleaning fibers and the working tips of the multiple clusters of second cleaning fibers together form the working tip of the first cleaning part; the height of the third cleaning fibers is lower than the height of the second cleaning fibers; 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.

9. The adaptive pulp file according to claim 8, 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.

10. The adaptive pulp file according to claim 8, 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.

11. The adaptive pulp file according to claim 10, 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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