Root canal file capable of expanding hands while measuring

Abstract

The utility model provides a root canal file for measuring and expanding hands simultaneously. The root canal file comprises a conductive clamping seat, a screw cap and a file body, one end of the conductive clamping seat is provided with an electric connection structure, the other end of the conductive clamping seat is provided with at least two clamping jaws which are arranged at intervals in the circumferential direction, the clamping jaws define a clamping space used for containing one end of the file body, and the outer sides of the clamping jaws are provided with first inclined planes; a second inclined surface matched with the first inclined surface is arranged in the nut, the nut is sleeved outside each clamping jaw and is in threaded connection with the conductive clamping seat, and a through hole for the file body to pass through is formed in the end part of the nut; when the nut and the conductive clamping base are screwed tightly, the second inclined face abuts against the first inclined face so as to drive the clamping jaws to contract towards the clamping space. According to the root canal file, drilling and root testing can be conducted at the same time, tools do not need to be switched repeatedly, operation is easy, and therefore the efficiency of root canal preparation is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and particularly relates to a hand-held root canal file for measuring and expanding at the same time. Background Art

[0002] Teeth are very important organs for humans. Dental health problems will also cause physical health problems. Therefore, more and more people in modern society are beginning to pay attention to dental health.

[0003] Root canal therapy (RCT) is currently the most effective and commonly used method for treating pulp disease and periapical periodontitis. It uses special instruments and methods to clean and shape the root canal system (root canal preparation), disinfect and sterilize the root canal with effective drugs (root canal disinfection), and finally tightly fill the root canal (root canal filling), and perform coronal restoration in parallel to control infection, repair defects, promote the healing of periapical lesions or prevent the occurrence of periapical lesions. During root canal treatment, the most important step is to determine the position of the apical stop. At present, the apex locator is mainly used in clinical work, that is, the impedance of the gingival sulcus-oral mucosa is equal to the impedance of the periodontal membrane-oral mask to measure the position of the apical stop.

[0004] However, during root canal treatment, the tooth needs to be drilled before the apical stop point can be measured. A root canal file is used for drilling, and a root measuring instrument is used for measurement. Since different tools are used for drilling and measurement, root measuring operations need to be performed repeatedly during the drilling process, resulting in cumbersome operations and low efficiency. Utility Model Content

[0005] The technical purpose of the utility model is to provide a hand-held root canal file that can measure and expand at the same time, which can realize the connection between the root canal file and the detection end of the root measuring instrument, so as to realize drilling and root measuring at the same time without repeatedly switching tools, and the operation is simple, thereby improving efficiency.

[0006] To solve the above technical problems, the utility model is implemented as follows: a hand-held root canal file for measuring and expanding at the same time is provided, comprising a conductive clamping seat, a nut and a file body; one end of the conductive clamping seat is provided with an electrical connection structure, and the other end of the conductive clamping seat is provided with at least two clamping jaws arranged at intervals in the circumferential direction, each of the clamping jaws encloses a clamping space for accommodating one end of the file body, and the outer side of the clamping jaw is provided with a first inclined surface; a second inclined surface matching the first inclined surface is provided inside the nut, the nut is sleeved outside each of the clamping jaws and is threadedly connected to the conductive clamping seat, and a through hole for the file body to pass through is provided at the end of the nut; wherein, when the nut and the conductive clamping seat are tightened, the second inclined surface abuts against the first inclined surface to drive each of the clamping jaws to shrink toward the clamping space.

[0007] Furthermore, the clamping jaw includes a spring sheet connected to the main body of the conductive clamping seat and a clamping head connected to the end of the spring sheet, and the second inclined surface is arranged on the outer side of the clamping head.

[0008] Further, in the radial direction, the thickness of the spring sheet is smaller than the maximum thickness of the clamp.

[0009] Further, in the circumferential direction, the width of the spring sheet is smaller than the width of the clamp.

[0010] Furthermore, the main body of the conductive clamping seat has a clamping hole communicated with the clamping space.

[0011] Furthermore, the clamping jaws are arranged at equal angles around the central axis of the conductive clamping seat, and the first inclined surface and the second inclined surface are both conical surfaces with the central axis of the conductive clamping seat as the axis.

[0012] Furthermore, the outer periphery of the main body of the conductive clamping seat protrudes to form a shoulder, the clamping jaw is connected to the shoulder, the outer diameter of the shoulder is greater than or equal to the maximum outer diameter of the clamping jaw, and the nut is threadedly connected to the shoulder.

[0013] Furthermore, a covering area is provided between the shoulder and the electrical connection structure, and the measuring and expanding hand-held root canal file further comprises a soft rubber layer surrounding the covering area.

[0014] Furthermore, the covering area is an annular groove, and the soft rubber layer is sleeved in the groove or integrally filled in the groove.

[0015] Furthermore, the electrical connection structure is a head portion of the conductive clamping seat, and the head portion is provided with an electrical connection hole.

[0016] Compared with the prior art, the measuring and expanding hand root canal file of the utility model has the following beneficial effects:

[0017] The file body is needle-shaped, with a head end and a blade end. The cross section of the blade end can be a regular polygon, a convex polygon or a concave polygon, etc., so that it is used for drilling holes. The head end is used to be clamped and fixed. In this solution, the nut and the conductive clamping seat are threaded and sleeved outside each clamping jaw. The head end of the file body can pass through the through hole of the nut to enter the clamping space formed by each clamping jaw. Afterwards, by tightening the nut, the second inclined surface can be pressed against the first inclined surface, thereby squeezing the outer side of the clamping jaw, so that the clamping jaw shrinks inward, the clamping space becomes narrower, and finally, each clamping jaw can stably clamp the file body. When using the root canal file, the electrical connection structure is connected to the root measuring instrument. In this way, the electrical connection with the file body can be achieved through the clamping seat, so that drilling and root measuring can be carried out simultaneously, without repeatedly switching tools. The operation is simple, thereby improving the efficiency of root canal preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional schematic diagram of a partially cut-open root canal file for measuring and expanding in an embodiment of the utility model.

[0019] In the accompanying drawings, the reference numerals represent: 1. conductive clamping seat; 11. clamping claw; 111. spring piece; 112. chuck; 12. electrical connection structure; 2. nut; 3. file body; 4. soft rubber layer. DETAILED DESCRIPTION

[0020] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships 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 referred device or element 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.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] In this embodiment, combined with Figure 1The measuring and expanding hand root canal file comprises a conductive clamping seat 1, a nut 2 and a file body 3; one end of the conductive clamping seat 1 is provided with an electrical connection structure 12, and the other end of the conductive clamping seat 1 is provided with at least two clamping jaws 11 arranged at intervals in the circumferential direction, each clamping jaw 11 encloses a clamping space for accommodating one end of the file body 3, and the outer side of the clamping jaw 11 is provided with a first inclined surface; a second inclined surface matching the first inclined surface is provided in the nut 2, the nut 2 is sleeved outside each clamping jaw 11 and is threadedly connected to the conductive clamping seat 1, and a through hole for the file body 3 to pass through is provided at the end of the nut 2; wherein, when the nut 2 and the conductive clamping seat 1 are tightened, the second inclined surface abuts against the first inclined surface to drive each clamping jaw 11 to shrink toward the clamping space.

[0024] The file body 3 is needle-shaped, with a head end and a blade end. The cross section of the blade end can be a regular polygon, a convex polygon or a concave polygon, etc., so that it is used for drilling holes. The head end is used to be clamped and fixed. In this solution, the nut 2 and the conductive clamping seat 1 are threadedly matched and sleeved on the outside of each clamping jaw 11. The head end of the file body 3 can pass through the through hole of the nut 2 and enter the clamping space formed by each clamping jaw 11. Afterwards, by tightening the nut 2, the second inclined surface can abut against the first inclined surface, thereby squeezing the outer side of the clamping jaw 11, so that the clamping jaw 11 shrinks inward, and the clamping space becomes narrower. Finally, each clamping jaw 11 can stably clamp the file body 3. When using the root canal file, the electrical connection structure 12 is connected to the root measuring instrument. In this way, the electrical connection with the file body 3 can be achieved through the clamping seat, so that drilling and root measuring can be carried out simultaneously, without repeatedly switching tools, and the operation is simple, thereby improving the efficiency of root canal preparation.

[0025] Furthermore, the clamping jaw 11 comprises a spring sheet 111 connected to the main body of the conductive clamping seat 1 and a clamping head 112 connected to the end of the spring sheet 111, and the second inclined surface is arranged on the outer side of the clamping head 112. The arrangement of the spring sheet 111 can make the clamping jaw 11 more easily deformable, and the position change of the clamping head 112 is more sensitive during the process of tightening or loosening the nut, so that it is easier to clamp or loosen the file body 3.

[0026] Furthermore, in the radial direction, the thickness of the spring sheet 111 is smaller than the maximum thickness of the chuck 112; in the circumferential direction, the width of the spring sheet 111 is smaller than the width of the chuck 112, and specifically, an arc-shaped notch can be provided at the edge of the spring sheet 111. By setting the thickness and width of the spring sheet 111, the deformation ability of the spring sheet 111 can be made stronger, and the clamping force of the chuck 112 can be more concentrated on the file body 3, and the clamping is more secure.

[0027] Furthermore, the main body of the conductive clamping seat 1 has a clamping hole connected to the clamping space. The clamping hole can accommodate a part of the head end of the file body 3, so as to facilitate the adjustment of the length of the clamped file body 3.

[0028] Furthermore, the clamping jaws 11 are arranged at equal angles around the central axis of the conductive clamping seat 1, and the first inclined surface and the second inclined surface are both conical surfaces with the central axis of the conductive clamping seat 1 as the axis. In this way, the clamping jaws 11 can apply force to the file body 3 more evenly, and the clamping is more stable and reliable.

[0029] In this embodiment, the inner side of each clamping jaw 11 is an arc surface, so the clamping space is a cylindrical space, which is adapted to the file body 3, and the root canal file for measuring and expanding while hand-held includes four clamping jaws 11. In some embodiments, the root canal file for measuring and expanding while hand-held canal can include two, three, five, six, etc. clamping jaws 11, which can be adaptively set according to actual conditions.

[0030] Furthermore, the outer periphery of the main body of the conductive clamping seat 1 protrudes to form a shoulder, the clamping jaw 11 is connected to the shoulder, the outer diameter of the shoulder is greater than or equal to the maximum outer diameter of the clamping jaw 11, and the nut 2 is threadedly connected to the shoulder. The setting of the shoulder can improve the connection reliability of the clamping jaw 11 on the one hand, and on the other hand, it can facilitate the nut 2 to be sleeved outside the clamping jaw 11 and tightly connected with the shoulder thread, so that the second inclined surface squeezes the first inclined surface during the process of tightening the nut 2 to the shoulder, so that each clamp 112 shrinks inward to achieve the clamping action.

[0031] Furthermore, there is a coating area between the shoulder and the electrical connection structure 12, and the measuring and expanding hand root canal file also includes a soft rubber layer 4 wrapped around the coating area. Specifically, the coating area is an annular groove, and the soft rubber layer 4 is sleeved in the groove or integrally filled in the groove. The soft rubber layer 4 can be a silicone material or a rubber material, etc., and the setting of the soft rubber layer 4 can be convenient for hand use. It should be understood that the outer shape of the soft rubber layer 4 and the connection structure of the conductive clamping seat 1 can be adaptively set according to actual needs, as long as the soft rubber layer 4 can be set on the outer side of the conductive clamping seat 1.

[0032] Furthermore, the electrical connection structure 12 is the head of the conductive clamping seat 1, and the head has an electrical connection hole. The electrical connection end of the root detector can be electrically connected to the conductive clamping seat 1 by connecting to the electrical connection hole, thereby realizing electrical connection between the root detector and the file body 3, so as to realize the root detection function during the root canal preparation process.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A root canal file for measuring and expanding, characterized in that: It comprises a conductive clamping seat, a nut and a file body; one end of the conductive clamping seat is provided with an electrical connection structure, the other end of the conductive clamping seat is provided with at least two clamping jaws arranged circumferentially and spaced apart, each of the clamping jaws encloses a clamping space for accommodating one end of the file body, and the outer side of the clamping jaw is provided with a first inclined surface; the nut is provided with a second inclined surface matching the first inclined surface, the nut is sleeved outside each of the clamping jaws and is threadedly connected to the conductive clamping seat, and the end of the nut is provided with a through hole for the file body to pass through; When the nut and the conductive clamping seat are tightened, the second inclined surface abuts against the first inclined surface to drive each of the clamping jaws to shrink toward the clamping space.

2. The root canal file for measuring and expanding according to claim 1, characterized in that: The clamping jaw comprises an elastic sheet connected to the main body of the conductive clamping seat and a clamping head connected to the end of the elastic sheet, and the second inclined surface is arranged on the outer side of the clamping head.

3. The root canal file for measuring and expanding according to claim 2, characterized in that: In the radial direction, the thickness of the spring sheet is smaller than the maximum thickness of the clamp.

4. The root canal file for measuring and expanding according to claim 2, characterized in that: In the circumferential direction, the width of the spring sheet is smaller than the width of the clamp.

5. The root canal file for measuring and expanding according to claim 1, characterized in that: The main body of the conductive clamping seat has a clamping hole communicated with the clamping space.

6. The root canal file for measuring and expanding according to claim 1, characterized in that: The clamping jaws are arranged at equal angles around the central axis of the conductive clamping seat, and the first inclined surface and the second inclined surface are both conical surfaces with the central axis of the conductive clamping seat as the axis.

7. The root canal file for measuring and expanding according to claim 1, characterized in that: The outer periphery of the main body of the conductive clamping seat protrudes to form a shoulder, the clamping jaw is connected to the shoulder, the outer diameter of the shoulder is greater than or equal to the maximum outer diameter of the clamping jaw, and the nut is threadedly connected to the shoulder.

8. The root canal file for measuring and expanding according to claim 7, characterized in that: A covering area is provided between the shoulder and the electrical connection structure, and the measuring and expanding hand-held root canal file further comprises a soft rubber layer surrounding the covering area.

9. The root canal file for measuring and expanding according to claim 8, characterized in that: The covering area is an annular groove, and the soft rubber layer is sleeved in the groove or integrally filled in the groove.

10. The root canal file for measuring and expanding according to claim 1, characterized in that: The electrical connection structure is the head of the conductive clamping seat, and the head is provided with an electrical connection hole.

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