A root canal file

Abstract

The present invention discloses a root canal file, comprising: a root canal file body, wherein the root canal file body is provided with an effective blade, an insulating covering part, a handle setting part, and a measuring metal part, wherein the effective blade, the insulating covering part, the handle setting part, and the measuring metal part are arranged in sequence, and the effective blade is provided with a thread; an insulating structure, wherein the insulating structure is provided with 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. The insulating covering film can prevent the metal part of the root canal file from contacting the metal crown of the patient, thereby preventing the root canal length measuring instrument from short-circuiting or alarming, thereby protecting the root canal length measuring instrument and increasing the service life of the root canal length measuring instrument. When the front end of the effective blade contacts the periapical membrane, the root canal length measuring instrument displays that a current loop is formed.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a root canal file. Background Art

[0002] When measuring, 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 mucosa of the corner of the mouth. When the root canal file gradually penetrates into the root canal until it touches the periapical membrane, a current loop is formed, and the root canal length measuring instrument shows that it has reached this area.

[0003] The structure of the dental root canal file in the prior art is as follows: Figure 1 As shown, it includes a root canal file body made of metal and a plastic handle arranged 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 dental file design standard, the effective edge (threaded part) of the root canal file body is constant at 16mm, and 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. according to clinical needs.

[0004] Due to the structural design of dental root canal files in the prior art, during electrical testing, one probe of the test instrument is generally in contact with the patient's gums and the other probe is in contact with the root canal file body from the effective edge to the plastic handle to measure the root canal working length.

[0005] During the root canal treatment process, there may be cases where the tooth already has a metal crown, but it cannot be removed in advance due to the patient's wishes. When measuring the tooth with a metal crown, the edge of the metal crown is in contact with the gums. When the electrode of the root canal length measuring instrument accidentally contacts the metal crown, it will cause an alarm and a short circuit in the root canal length measuring instrument, making it impossible to accurately measure the root canal length. Summary of the invention

[0006] The technical problem to be solved by the present invention 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 choice or create conditions.

[0007] The solution of the present invention to solve its technical problem is:

[0008] A root canal file, comprising:

[0009] A root canal file body, wherein the root canal file body is provided with an effective blade, an insulating covering portion, a handle setting portion, and a measuring metal portion, wherein the effective blade, the insulating covering portion, the handle setting portion, and the measuring metal portion are arranged in sequence, and the effective blade is provided with a thread;

[0010] An insulating structure is provided with 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 of the above technical solution, the outer peripheral surface of the insulating handle is provided with anti-slip grooves.

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

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

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

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

[0016] As a further improvement of the above technical solution, the diameter of the effective blade portion is provided with a plurality of specifications, and the insulating structure has different colors corresponding to the effective blade portions of different diameters.

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

[0018] As a further improvement of the above technical solution, the thread indicator mark is arranged on the end surface of the insulating handle away from the effective blade.

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

[0020] The beneficial effect of the present invention is that when measuring the root canal length, the medical staff puts one electrode of the root canal length measuring instrument in contact with the measuring metal part and the other electrode in contact with the mucosa of the corner of the mouth, and then the medical staff puts the root canal file into the root canal, the effective blade part completely enters the root canal, and a part of the insulating covering part enters the root canal. The insulating covering film can prevent the metal part of the root canal file from contacting the metal crown of the patient, thereby preventing the root canal length measuring instrument from short-circuiting or alarming, so as to more accurately measure the actual root canal length. When the front end of the effective blade part contacts the periapical membrane, the root canal length measuring instrument shows that a current loop is formed.

[0021] The invention is used in the technical field of medical devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

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

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

[0025] Figure 3 is a schematic diagram of an exploded structure of an embodiment of the present invention;

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

[0027] In the figure, 100, root canal file body; 110, measuring metal part; 111, anti-accidental swallowing protrusion; 120, handle setting part; 130, insulating covering part; 140, effective blade part; 200, insulating structure; 210, insulating covering film; 211, length indication mark; 220, insulating handle; 221, thread indication mark. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0029] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] When measuring, 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 mucosa of the corner of the mouth. When the root canal file gradually penetrates into the root canal until it touches the periapical membrane, a current loop is formed, and the root canal length measuring instrument shows that it has reached this area.

[0032] The structure of the dental root canal file in the prior art is as follows: Figure 1 As shown, it includes a root canal file body made of metal and a plastic handle arranged 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 dental file design standard, the effective edge (threaded part) of the root canal file body is constant at 16mm, and 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. according to clinical needs.

[0033] Due to the structural design of dental root canal files in the prior art, during electrical testing, one probe of the test instrument is generally in contact with the patient's gums and the other probe is in contact with the root canal file body from the effective edge to the plastic handle to measure the root canal working length.

[0034] During the root canal treatment process, there may be cases where the tooth already has a metal crown, but it cannot be removed in advance due to the patient's wishes. When measuring the tooth with a metal crown, the edge of the metal crown is in contact with the gums. When the electrode of the root canal length measuring instrument accidentally contacts the metal crown, it will cause an alarm and a short circuit in the root canal length measuring instrument, making it impossible to accurately measure the root canal length.

[0035] In order to solve the above technical problems, a novel root canal file is 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 covering part 130 and an effective blade part 140. The measuring metal part 110, the handle setting part 120, the insulating covering part 130 and the effective blade part 140 are sequentially provided and fixed.

[0038] The outer peripheral surface of the effective blade 140 is provided with threads, and the threads of the effective blade 140 are used to expand the root canal, clean the infected substances and establish a drainage channel for the apical lesion. According to the design standard of the dental file, the length of the effective blade 140 is 16 mm.

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

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

[0041] The root canal file body 100 has different specifications. The total lengths of the insulating covering portion 130 and the effective blade portion 140 of the root canal file body 100 of different specifications are different. According to clinical needs, the total lengths of the insulating covering portion 130 and the effective blade portion 140 of the root canal file body 100 include parameters such as 21 mm, 25 mm, 28 mm, and 31 mm.

[0042] Specifically, in this embodiment, the measuring metal part 110 is provided with an anti-accidental swallowing protrusion 111, and the number of the anti-accidental swallowing protrusion 111 is set to two, and the two anti-accidental swallowing protrusions 111 are symmetrically arranged on both sides of the measuring metal part 110, so that the part of the root canal file body 100 away from the effective blade 140 is in a T-shaped structure. During the use of the root canal file, medical staff can wrap the dental floss around the anti-accidental swallowing protrusion 111 to facilitate the binding of the dental floss, so as to prevent the patient from swallowing or aspirating the dental floss by mistake without rubber dam isolation. The two anti-accidental swallowing protrusions 111 can prevent the dental floss from being easily separated from the anti-accidental swallowing protrusion 111.

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

[0044] The insulating covering film 210 covers the insulating covering part 130. The insulating covering film 210 is provided at the insulating covering part 130 to prevent the metal part of the root canal file from contacting the metal crown of the patient, thereby preventing the root canal length measuring instrument from short-circuiting or alarming, so that the actual root canal length can be measured more accurately, and the root canal length measuring instrument can be protected to a certain extent to increase the service life of the root canal length measuring instrument.

[0045] The 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 patterns. Specifically, in this embodiment, the anti-slip patterns are provided as mesh patterns. In other embodiments, the anti-slip patterns may also be provided as patterns of multiple hemispherical grooves. Those skilled in the art may select the specific structure of the anti-slip patterns according to actual needs.

[0046] That is, the effective blade portion 140 and the measuring metal portion 110 of the root canal file body 100 are exposed outside the insulating structure 200 .

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

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

[0049] The insulating structure 200 has a variety of different colors, and different colors correspond to effective blades 140 of different diameters. The colors are based on the design standards of dental files and different numbers and models: pink corresponds to 06, gray corresponds to 08, purple corresponds to 10, white corresponds to 15, yellow corresponds to 20, red corresponds to 25, blue corresponds to 30, green corresponds to 35, and black corresponds to 40, so that medical staff can better distinguish effective blades 140 of different diameters.

[0050] Specifically, in this embodiment, a plurality of length indication marks 211 are printed on the outer circumference of the insulating cover film 210, and the plurality of length indication marks 211 are arranged equidistantly along the length direction of the insulating cover film 210. The length indication marks 211 are annular in structure, and the length indication marks 211 surround the outer circumference of the insulating cover film 210.

[0051] Specifically, in this embodiment, the end surface of the insulating handle 220 away from the effective blade 140 is printed with a thread indicator 221, and the thread indicator 221 is printed on the insulating handle 220 according to the shape of the thread, and the thread indicator 221 is used to distinguish the thread shapes such as K file, H file, C file, etc. In other embodiments, the thread indicator 221 can also be printed on the side of the insulating handle 220, and those skilled in the art can select the specific position of the thread indicator 221 according to actual needs.

[0052] When measuring the root canal length, the medical staff contacts one electrode of the root canal length measuring instrument with the measuring metal part 110 and the other electrode with the mucosa of the corner of the mouth. Then the medical staff inserts the root canal file into the root canal, and the effective blade 140 completely enters the root canal and a part of the insulating covering part 130 enters the root canal. When the front end of the effective blade 140 contacts the periapical membrane, the root canal length measuring instrument shows that a current loop is formed, and the medical staff can know the length of the root canal through the length indication mark 211 on the insulating covering film 210.

[0053] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A root canal file, characterized in that: include: A root canal file body, wherein the root canal file body is provided with an effective blade, an insulating covering portion, a handle setting portion, and a measuring metal portion, wherein the effective blade, the insulating covering portion, the handle setting portion, and the measuring metal portion are arranged in sequence, and the effective blade is provided with a thread; An insulating structure is provided with 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. A root canal file according to claim 1, characterized in that: The outer peripheral surface of the insulating handle is provided with anti-slip grooves.

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

4. The 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 indicating marks, and the plurality of length indicating marks are arranged along the length direction of the insulating cover film.

5. The root canal file according to claim 1, characterized in that: The measuring metal part is protruded with an anti-accidental swallowing protrusion, and the anti-accidental swallowing protrusion is used to be connected with the linear structure.

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

7. The root canal file according to claim 1, characterized in that: The diameter of the effective blade portion is provided with a plurality of specifications, and the insulating structure has different colors corresponding to the effective blade portions of different diameters.

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

9. The root canal file according to claim 8, characterized in that: The thread indicator mark is arranged on the end surface of the insulating handle away from the effective blade portion.

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

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