Root canal file

Abstract

The utility model discloses a root canal file which comprises a root canal file body, the root canal file body is provided with an effective blade part, an insulation covering part, a handle arranging part and a measuring metal part, the effective blade part, the insulation covering part, the handle arranging part and the measuring metal part are arranged in sequence, and the effective blade part is provided with threads; the insulation structure is provided with an insulation handle and an insulation covering film; the insulating covering film wraps the insulating covering part, and the insulating handle wraps the handle setting part. The insulating covering film can prevent the metal part of the root canal file from being in contact with the metal dental crown of the patient, so that short circuit or alarm of the root canal length measuring instrument is avoided, the root canal length measuring instrument can be protected, and the service life of the root canal length measuring instrument is prolonged. When the front end of the effective blade part is in contact with the periapical membrane, the root canal length measuring instrument shows that a current loop is formed.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a root canal file. Background Technology

[0002] During measurement, one electrode of the root canal length measuring instrument is connected to the root canal file, and the other electrode is in contact with the oral mucosa. As the root canal file gradually penetrates into the root canal until it contacts the periapical membrane, a current circuit is formed, and the root canal length measuring instrument indicates that this area has been reached.

[0003] The structure of dental root canal files in the prior art is as follows: Figure 1 As shown, it includes a metal root canal file body and a plastic handle located at the end of the root canal file body. The plastic handle completely covers the end of the root canal file body. According to the tooth file design standard, the effective cutting edge (the threaded part) of the root canal file body is always 16mm. Depending on clinical needs, the total length excluding the plastic handle (i.e., the total length of the root canal file body not covered by the plastic handle) is 21mm, 25mm, 28mm, 31mm, etc.

[0004] Due to the structural design of existing dental root canal files, during current electrical testing, one probe of the testing instrument is typically in contact with the patient's gums, while the other probe is in contact with the root canal file body, specifically the part from the effective blade to the plastic handle, to measure the working length of the root canal.

[0005] During root canal treatment, there may be cases where teeth already have metal crowns that cannot be removed beforehand at the patient's request. When measuring teeth with metal crowns, the edge of the metal crown is in contact with the gum. If the electrode of the root canal length measuring instrument accidentally comes into contact with the metal crown, it will trigger an alarm and short circuit in the root canal length measuring instrument, making it impossible to accurately measure the root canal length. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a root canal file to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0007] The solution to the technical problem of this utility model is:

[0008] A root canal file, comprising:

[0009] The root canal file body has an effective cutting edge, an insulating cover, a handle setting part, and a measuring metal part, which are arranged sequentially. The effective cutting edge is threaded.

[0010] An insulating structure is provided, wherein the insulating structure has an insulating handle and an insulating covering film; the insulating covering film covers the insulating covering part, and the insulating handle covers the handle setting part.

[0011] As a further improvement to the above technical solution, the outer peripheral surface of the insulated handle is provided with anti-slip texture.

[0012] As a further improvement to the above technical solution, the anti-slip texture is a mesh pattern.

[0013] As a further improvement to the above technical solution, the outer peripheral surface of the insulating covering film is provided with a plurality of length indicator marks, and the plurality of length indicator marks are arranged along the length direction of the insulating covering film.

[0014] As a further improvement to the above technical solution, the measuring metal part has an anti-swallowing protrusion, which is used to connect with the linear structure.

[0015] As a further improvement to the above technical solution, two anti-swallowing protrusions are provided, and the two anti-swallowing protrusions are symmetrically arranged on both sides of the measuring metal part.

[0016] As a further improvement to the above technical solution, the effective cutting edge has various diameters, and the insulating structure has different colors corresponding to the effective cutting edge with different diameters.

[0017] As a further improvement to the above technical solution, the insulating handle is provided with a thread indicator mark, which is used to distinguish the thread shape.

[0018] As a further improvement to the above technical solution, the thread indicator is provided on the end face of the insulating handle away from the effective cutting edge.

[0019] As a further improvement to the above technical solution, the insulation structure is a plastic component.

[0020] The beneficial effects of this invention are as follows: When measuring root canal length, medical personnel place one electrode of the root canal length measuring instrument in contact with the measuring metal part and the other electrode in contact with the oral mucosa. Then, the medical personnel insert the root canal file into the root canal, ensuring the effective cutting edge fully enters the root canal and a portion of the insulating cover enters the root canal. The insulating cover prevents the metal part of the root canal file from contacting the patient's metal crown, thus preventing short circuits or alarms in the root canal length measuring instrument, thereby allowing for more accurate measurement of the actual root canal length. When the tip of the effective cutting edge contacts the periodontal membrane, the root canal length measuring instrument indicates that a current loop has been formed.

[0021] This invention relates to the field of medical device technology. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of a root canal file in the prior art;

[0024] Figure 2 This is a schematic diagram of the overall structure of the root canal file according to an embodiment of the present invention;

[0025] Figure 3 This is an exploded structural diagram of an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the overall structure from another angle of an embodiment of the present invention.

[0027] In the diagram, 100 is the main body of the root canal file; 110 is the measuring metal part; 111 is the anti-swallowing protrusion; 120 is the handle setting part; 130 is the insulating cover part; 140 is the effective cutting edge part; 200 is the insulating structure; 210 is the insulating cover film; 211 is the length indicator mark; 220 is the insulating handle; and 221 is the thread indicator mark. Detailed Implementation

[0028] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0031] During measurement, one electrode of the root canal length measuring instrument is connected to the root canal file, and the other electrode is in contact with the oral mucosa. As the root canal file gradually penetrates into the root canal until it contacts the periapical membrane, a current circuit is formed, and the root canal length measuring instrument indicates that this area has been reached.

[0032] The structure of dental root canal files in the prior art is as follows: Figure 1 As shown, it includes a metal root canal file body and a plastic handle located at the end of the root canal file body. The plastic handle completely covers the end of the root canal file body. According to the tooth file design standard, the effective cutting edge (the threaded part) of the root canal file body is always 16mm. Depending on clinical needs, the total length excluding the plastic handle (i.e., the total length of the root canal file body not covered by the plastic handle) is 21mm, 25mm, 28mm, 31mm, etc.

[0033] Due to the structural design of existing dental root canal files, during current electrical testing, one probe of the testing instrument is typically in contact with the patient's gums, while the other probe is in contact with the root canal file body, specifically the part from the effective blade to the plastic handle, to measure the working length of the root canal.

[0034] During root canal treatment, there may be cases where teeth already have metal crowns that cannot be removed beforehand at the patient's request. When measuring teeth with metal crowns, the edge of the metal crown is in contact with the gum. If the electrode of the root canal length measuring instrument accidentally comes into contact with the metal crown, it will trigger an alarm and short circuit in the root canal length measuring instrument, making it impossible to accurately measure the root canal length.

[0035] To solve the above technical problems, a new type of root canal file was designed.

[0036] Reference Figures 2 to 4 A root canal file includes a root canal file body 100 and an insulating structure 200.

[0037] The root canal file body 100 is provided with a measuring metal part 110, a handle setting part 120, an insulating cover part 130, and an effective cutting edge part 140. The measuring metal part 110, the handle setting part 120, the insulating cover part 130, and the effective cutting edge part 140 are arranged and fixed in sequence.

[0038] The outer circumferential surface of the effective cutting edge 140 is threaded. The threaded surface of the effective cutting edge 140 serves to enlarge the root canal, clear infected material, and establish a drainage channel for the periapical lesion. According to the dental file design standard, the length of the effective cutting edge 140 is 16mm.

[0039] The effective cutting edge 140 has various diameter specifications, and the diameter of the effective cutting edge 140 of different specifications is indicated by numbers. Common numbers are 06, 08, 10, 15, 20, 25, 30, 35 and 40.

[0040] The threads of the effective cutting edge 140 have different shapes, and root canal files with different thread shapes are distinguished by names such as K file, H file, C file, etc.

[0041] The root canal file body 100 has different specifications. The total length of the insulating cover 130 and the effective cutting edge 140 of the root canal file body 100 of different specifications is different. According to clinical needs, the total length of the insulating cover 130 and the effective cutting edge 140 of the root canal file body 100 has parameters such as 21mm, 25mm, 28mm, and 31mm.

[0042] Specifically, in this embodiment, the measuring metal part 110 is provided with two anti-swallowing protrusions 111, which are symmetrically arranged on both sides of the measuring metal part 110, so that the portion of the root canal file body 100 away from the effective cutting edge 140 has a T-shaped structure. During the use of this root canal file, medical staff can wrap dental floss around the anti-swallowing protrusions 111 for easy binding, thus preventing patients from accidentally swallowing or aspirating the floss in the absence of a rubber dam. The two anti-swallowing protrusions 111 make it less likely for the dental floss to detach from them.

[0043] The insulating structure 200 includes an insulating cover film 210 and an insulating handle 220.

[0044] An insulating covering film 210 covers the insulating covering portion 130. The insulating covering film 210 at the insulating covering portion 130 prevents the metal part of the root canal file from contacting the patient's metal crown, thus preventing short circuits or alarms in the root canal length measuring instrument. This allows for more accurate measurement of the actual root canal length and also provides some protection for the root canal length measuring instrument, thereby extending its service life.

[0045] An insulating handle 220 covers the handle setting portion 120. Specifically, in this embodiment, the outer peripheral surface of the insulating handle 220 is provided with anti-slip texture. Specifically, in this embodiment, the anti-slip texture is set as a mesh pattern. In other embodiments, the anti-slip texture may also be set as a pattern of multiple hemispherical grooves. Those skilled in the art can select the specific structure of the anti-slip texture according to actual needs.

[0046] The effective cutting edge 140 and the measuring metal part 110 of the root canal file body 100 are exposed to the insulating structure 200.

[0047] The insulating cover film 210 and the insulating handle 220 are integrally formed components.

[0048] Specifically, in this embodiment, both the insulating cover film 210 and the insulating handle 220 are medical plastic components, which are made by injection molding. During injection molding, the root canal file body 100 is first placed in the injection mold, and then injection molding is performed so that the root canal file body 100 is fixed to the insulating structure 200 after injection molding.

[0049] The insulation structure 200 comes in a variety of colors, with each color corresponding to a different diameter of the effective cutting edge 140. The colors are based on the design standards for dental files, with different numbers and models: pink corresponds to 06, gray to 08, purple to 10, white to 15, yellow to 20, red to 25, blue to 30, green to 35, and black to 40, so that medical staff can better distinguish between effective cutting edges 140 of different diameters.

[0050] Specifically, in this embodiment, a plurality of length indicator marks 211 are printed on the outer peripheral surface of the insulating cover film 210, and the plurality of length indicator marks 211 are arranged at equal intervals along the length direction of the insulating cover film 210. The length indicator marks 211 have a ring structure and surround the outer peripheral surface of the insulating cover film 210.

[0051] Specifically, in this embodiment, a thread indicator 221 is printed on the end face of the insulating handle 220 away from the effective cutting edge 140. The thread indicator 221 is printed on the insulating handle 220 according to the shape of the thread and is used to distinguish thread shapes such as K-files, H-files, and C-files. In other embodiments, the thread indicator 221 may also be printed on the side of the insulating handle 220. Those skilled in the art can select the specific position of the thread indicator 221 according to actual needs.

[0052] During root canal length measurement, medical staff contact one electrode of the root canal length measuring instrument with the measuring metal part 110 and the other electrode with the oral mucosa. Then, the medical staff inserts the root canal file into the root canal, with the effective cutting edge 140 fully entering the root canal and a portion of the insulating cover 130 entering the root canal. When the tip of the effective cutting edge 140 contacts the periapical membrane, the root canal length measuring instrument shows that a current circuit has been formed. The medical staff can know the length of the root canal through the length indicator 211 on the insulating cover 210.

[0053] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A root canal file, characterized in that: include: The root canal file body has an effective cutting edge, an insulating cover, a handle setting part, and a measuring metal part, which are arranged sequentially. The effective cutting edge is threaded. An insulating structure is provided, wherein the insulating structure has an insulating handle and an insulating covering film; the insulating covering film covers the insulating covering part, and the insulating handle covers the handle setting part.

2. The root canal file according to claim 1, characterized in that: The outer circumferential surface of the insulated handle is provided with anti-slip texture.

3. A root canal file according to claim 2, characterized in that: The anti-slip texture is a mesh pattern.

4. A root canal file according to claim 1, characterized in that: The outer peripheral surface of the insulating cover film is provided with a plurality of length indicator marks, which are arranged along the length direction of the insulating cover film.

5. A root canal file according to claim 1, characterized in that: The measuring metal part has a protrusion to prevent accidental swallowing, which is used to connect with the linear structure.

6. A root canal file according to claim 5, characterized in that: Two anti-swallowing protrusions are provided, and the two anti-swallowing protrusions are symmetrically arranged on both sides of the measuring metal part.

7. A root canal file according to claim 1, characterized in that: The effective cutting edge has various diameters, and the insulating structure has different colors corresponding to the effective cutting edge with different diameters.

8. A root canal file according to claim 1, characterized in that: The insulated handle is provided with a thread indicator mark, which is used to distinguish the thread shape.

9. A root canal file according to claim 8, characterized in that: The thread indicator is located on the end face of the insulated handle away from the effective cutting edge.

10. A root canal file according to claim 1, characterized in that: The insulation structure is a plastic component.

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