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CN-224206903-U - Root canal file and root canal preparation machine

CN224206903UCN 224206903 UCN224206903 UCN 224206903UCN-224206903-U

Abstract

The application belongs to the technical field of dental instruments, and relates to a root canal file, which comprises a handle part and an operating part, wherein the operating part comprises a first blade part and a second blade part, the second blade part is arranged between the handle part and the first blade part, the first blade part and the second blade part are respectively in a common parallelogram, a diamond or a rectangle, and the shapes of the first blade part and the second blade part are different, wherein at least one of the first blade part and the second blade part is in a diamond or a common parallelogram for cutting two points in a root canal, and the first blade part and the second blade part are in smooth transition. The application also relates to a root canal preparation machine. The technical scheme provided by the application can enable the root canal file to absorb the advantages of the common parallelogram section and the rhombic section, and keep two-point contact all the time in the cutting process, so that more chip containing spaces are ensured, the cutting efficiency and stability of the tip are ensured, and the chip removing capacity is improved.

Inventors

  • QIU GUIBIN
  • SUN YU
  • YU JIANPING
  • LI JI
  • ZHANG TAO
  • WANG GONGMIN

Assignees

  • 赛乐(常州)医疗科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250415

Claims (10)

  1. 1. The root canal file is characterized by comprising a handle part (100) and an operation part (200), wherein the operation part (200) comprises a first blade part (1) and a second blade part (2), the second blade part (2) is arranged between the handle part (100) and the first blade part (1), the first blade part (1) and the second blade part (2) are respectively in a general parallelogram, a diamond shape or a rectangle shape, the first blade part (1) and the second blade part (2) are different in shape, at least one of the first blade part (1) and the second blade part (2) is in a diamond shape or a general parallelogram shape for cutting two points in a root canal, and the first blade part (1) and the second blade part (2) are in smooth transition.
  2. 2. The root canal file according to claim 1, wherein the cross section of the first blade (1) is a diamond for two-point cutting in the root canal, four corners of the diamond are denoted as A1, A2, A3 and A4, respectively, on the diamond, the A1, A2, A3 and A4 are distributed counterclockwise, the A1 and A3 are correspondingly arranged, and the A2 and A4 are correspondingly arranged, the apex of the A1 and the apex of the A3 are both located on the working circumference T1 of the first blade (1), and the A2 and the A4 are located inside the working circumference T1 of the first blade (1).
  3. 3. Root canal file according to claim 2, characterized in that the second blade (2) has a rectangular cross section.
  4. 4. Root canal file according to claim 1, characterized in that the cross section of the second blade (2) is a general parallelogram for two-point cutting in the canal, the four corners of which are denoted B1, B2, B3 and B4, respectively, on which general parallelogram the B1, B2, B3 and B4 are distributed anticlockwise and the B1 and B3 are arranged correspondingly and the B2 and B4 are arranged correspondingly, the vertex of the B1 and the vertex of the B3 both being on the working circumference T2 of the second blade (2), the B2 and the B4 being located inside the working circumference T2 of the second blade (2).
  5. 5. Root canal file according to claim 4, characterized in that the first blade (1) has a square cross section.
  6. 6. Root canal file according to claim 1, characterized in that the length L1 of the first blade (1) is 1-10mm, and/or, The length L2 of the second blade part (2) is 4-20mm, and/or, The length L3 of the operating part (200) is 5-40mm, and/or, The handle portion (100) has a diameter of 1-10mm, and/or, The diameter of the operating portion (200) gradually decreases in a direction away from the handle portion (100).
  7. 7. The file according to any of the claims 1-6, characterized in that the operating portion (200) further comprises a smooth portion (3), which smooth portion (3) is arranged between the second blade portion (2) and the handle portion (100).
  8. 8. Root canal file according to claim 7, characterized in that the smooth part (3) is provided with a number of score lines, the width of which is 0.1-1mm, and/or, The diameter of the smooth part (3) is 0.1-3mm.
  9. 9. The file according to claim 8, characterized in that the file further comprises a stop (4), the stop (4) being arranged between the handle portion (100) and the operating portion (200).
  10. 10. A root canal preparation machine comprising a root canal file as claimed in any one of claims 1 to 9.

Description

Root canal file and root canal preparation machine Technical Field The application relates to the technical field of dental instruments, in particular to an root canal file and a root canal preparation machine. Background Endodontic treatment is a common treatment regimen in the treatment of pulp and periapical diseases, which can maximally preserve natural teeth while thoroughly removing necrotic nerve tissue and sources of infection. The machine-used root canal file is used as a common tool in the root canal preparation process, and can efficiently clean and complete and smooth the inner cavity of the root canal in the root canal treatment process, thereby having important influence on the effective treatment of the root canal. Conventional root canal files generally employ a fixed cross-sectional shape (e.g., triangular, square, or diamond). From structural analysis, stress concentration is easy to generate in the use process of the root canal file by a single cross-sectional shape, so that the device is easy to fatigue and fracture, and from clinical analysis, the complex root canal system needs the device to have various performances, and the single cross-sectional shape is difficult to meet the requirements. In the prior art, some variable cross-section designs, such as a square design gradually changed into a rectangle, but the designs are generally four-point cutting, the friction force is large, the cutting angle between the cutting surface and the dentin surface is smaller, the cutting efficiency is insufficient, meanwhile, the chip containing rate space is lower, chips are extruded, and the chips are not easy to discharge. Disclosure of utility model The technical scheme of the application aims to solve the technical problems that in the prior art, the friction force of the root canal file is large, the cutting angle between the cutting surface and the dentin surface is small, the cutting efficiency is insufficient, meanwhile, the chip containing rate space is low, chips are extruded, and the chips are not easy to discharge. In order to solve the technical problems, the embodiment of the application provides an root canal file, which adopts the following technical scheme: The root canal file comprises a handle part and an operation part, wherein the operation part comprises a first blade part and a second blade part, the second blade part is arranged between the handle part and the first blade part, the first blade part and the second blade part are respectively in a common parallelogram, a diamond or a rectangle, and the shapes of the first blade part and the second blade part are different, at least one of the first blade part and the second blade part is in a diamond or a common parallelogram for cutting at two points in a root canal, and smooth transition is realized between the first blade part and the second blade part. Further, the cross section of the first blade part is a diamond for cutting two points in a root canal, four corners of the diamond are respectively marked as A1, A2, A3 and A4, on the diamond, the A1, A2, A3 and A4 are distributed anticlockwise, the A1 and the A3 are correspondingly arranged, the A2 and the A4 are correspondingly arranged, the vertex of the A1 and the vertex of the A3 are both positioned on a working circumference T1 of the first blade part, and the A2 and the A4 are positioned inside the working circumference T1 of the first blade part. Further, the second blade portion has a rectangular cross section. Further, the cross section of the second blade part is a common parallelogram for two-point cutting in a root canal, four corners of the common parallelogram are respectively marked as B1, B2, B3 and B4, on the common parallelogram, the B1, B2, B3 and B4 are distributed anticlockwise, the B1 and the B3 are correspondingly arranged, the B2 and the B4 are correspondingly arranged, the vertex of the B1 and the vertex of the B3 are both positioned on a working circumference T2 of the second blade part, and the B2 and the B4 are positioned inside the working circumference T2 of the second blade part. Further, the first blade portion has a square cross section. Further, the length L1 of the first blade part is 1-10mm, and/or, The length L2 of the second edge portion is 4-20mm, and/or, The length L3 of the operating part is 5-40mm, and/or, The handle portion having a diameter of 1-10mm, and/or, The diameter of the operating portion gradually decreases in a direction away from the handle portion. Further, the operation portion further includes a smooth portion provided between the second blade portion and the handle portion. Further, a plurality of score lines are arranged on the smooth part, the width of the score lines is 0.1-1mm, and/or, The diameter of the smooth part is 0.1-3mm. Further, the root canal file further comprises a limiting part, and the limiting part is arranged between the handle part and the operating part. In order to solve the technical problem