CN217066624U

CN217066624U - Tooth glue taking-out file for root canal retreatment

Info

Publication number: CN217066624U
Application number: CN202220256061.4U
Authority: CN
Inventors: 李焱垚; 邹玲; 季梦真; 颜愈佳; 朱华玲; 赤雅旗; 王也; 付笛
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2022-02-08
Filing date: 2022-02-08
Publication date: 2022-07-29
Anticipated expiration: 2032-02-08

Abstract

The utility model relates to the technical field of auxiliary medical equipment, and discloses a root canal retreatment gutta-percha taking-out file, which comprises a handle and a file rod, wherein the handle end is defined as the rear end, the end far away from the handle is defined as the front end, and the file rod is sequentially provided with a cutting part, a burr part and a smooth part from the front end to the rear end; a plurality of barbs are uniformly distributed on the burr part. The utility model discloses a file is taken out to root canal retreatment gutta-percha, the form cutting part of front end can effectively cut the gutta-percha, makes in the apparatus gets into the gutta-percha, and the barb of burr portion can provide bigger gomphosis power, makes the art person can carry and draw with bigger strength and longer time, slowly takes out the root canal with the gutta-percha monoblock.

Description

Tooth glue taking-out file for root canal retreatment

Technical Field

The utility model relates to an auxiliary medical instrument technical field, concretely relates to root canal retreatment gutta-percha takes out file.

Background

After the root canal is filled in the dental root canal treatment, when undesirable conditions such as overfilling and underfilling appear, the gutta-percha at the apical section needs to be taken out, and at present, the gutta-percha in the root canal is clinically taken out by adopting a root canal H file or a broach which is made of stainless steel. The root canal H file is an embedded force formed after the gutta-percha is screwed in through threads, the gutta-percha is taken out of the root canal by lifting, but because the gutta-percha has stronger retention force with the wall of the root canal after the root canal is filled densely, the root canal H file has certain taper, the sufficient force cannot be provided when the root canal H file is screwed in too shallow, the gutta-percha can only be removed by lifting a bit after being screwed in for many times, the time is long, and more fragments are generated; if the screw is screwed too deep, the upper-section gutta-percha is easily crushed, so that the gutta-percha cannot be integrally removed, the later-stage chips are difficult to clean, meanwhile, the stainless steel has poor toughness, and the risk of separation of instruments is also caused when the screw is screwed too deep; when the broach is used for taking the gutta-percha, a heat carrier which can generate high temperature is needed to melt the upper section of the gutta-percha, then the broach is inserted into the softened gutta-percha, and the gutta-percha is tried to be pulled out after the broach is cooled and solidified.

SUMMERY OF THE UTILITY MODEL

In order to solve the deficiencies in the prior art, the utility model provides a root canal retreatment gutta-percha takes out file, is convenient for wholly take out root canal apex section gutta-percha.

In order to realize the technical purpose, the utility model discloses a technical scheme is:

a tooth glue taking-out file for root canal retreatment comprises a handle and a file rod, wherein the end of the handle is defined as a rear end, the end far away from the handle is defined as a front end, and the file rod sequentially comprises a cutting part, a burr part and a smooth part from the front end to the rear end; a plurality of barbs are uniformly distributed on the burr part.

Further, the cutting part is spiral with a sagittal plane approximately conical cross section approximately circular.

Furthermore, the taper of the sagittal plane of the cutting part is 1-4 degrees.

Preferably, the sagittal plane taper of the cutting portion is 2 degrees.

Preferably, the diameter of the tip of the cutting part is 0.15-0.4 mm.

Preferably, the length of the cutting part is 2-3 mm.

Preferably, the length of the burr part is 8-10 mm.

Preferably, the file rod is made of stainless steel or nickel-titanium alloy material.

Preferably, the handle is made of a wood material, a plastic material or a metal material.

Furthermore, an anti-skid structure is arranged on the handle.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the utility model discloses a file is taken out to root canal retreatment gutta-percha, the form cutting part of front end can effectively cut gutta-percha, makes the apparatus enter into the gutta-percha, the barb of burr portion can provide bigger embedding power, makes the art person can use bigger strength and longer time to carry and draw, slowly takes out the root canal with the gutta-percha monoblock; 2) the cutting part is only 2-3mm long, and the burr part has no taper, so that the upper gutta-percha is not crushed when the cutting part enters too deep due to the increase of the rear diameter, and the generation of chips is reduced; 3) the handle is provided with an anti-slip structure, so that slipping in the use process is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Reference numerals: 1-handle, 2-file rod, 21-cutting part, 22-burr part, 23-smooth part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

A file for taking out gutta-percha in root canal retreatment is shown in figure 1 and comprises a handle 1 and a file rod 2, wherein the handle end is defined as a rear end, one end far away from the handle is defined as a front end, and the file rod 2 is sequentially provided with a cutting part 21, a burr part 22 and a smooth part 23 from the front end to the rear end. The cutting part 21 is spiral with a sagittal plane approximate to a cone and a cross section approximate to a circle, and the taper of the sagittal plane of the cutting part is 1-4 degrees, preferably 2 degrees; the tip diameter of the cutting part 21 is 0.15-0.4 mm, preferably, the tip diameter is 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, which respectively corresponds to a 15#, 20#, 25#, 30#, 35#, 40# file; the length of the cutting part 21 is 2-3 mm; burr portion 22 and the smooth portion 23 of file pole are cylindricly, and a plurality of short and small barbs have evenly been laid to burr portion 22 periphery, burr portion 22's length is about 8 ~ 10 mm. The length of the file rod has three specifications of 21mm, 25mm and 31 mm.

The file rod 2 is made of stainless steel or nickel-titanium alloy materials so as to meet different difficulty requirements.

The handle 1 is made of wood materials, plastic materials or metal materials, and the anti-skidding salient points or the anti-skidding sleeves are arranged on the handle 1 in a sleeved mode, so that slipping in use is avoided.

According to the file for taking out the gutta-percha for the root canal retreatment, the spiral cutting part at the front end can effectively cut the gutta-percha, so that an instrument enters the gutta-percha, meanwhile, the tip is only 2-3mm long, the rear part is cylindrical, the diameter of the rear part cannot be increased, the upper gutta-percha is prevented from being broken when the instrument enters too deep, and the generation of fragments is reduced; the barb of burr portion can provide bigger gomphosis power, makes the art person can be with bigger strength and longer time carry and draw, slowly takes out the root canal with the gutta-percha monoblock.

Compared with stainless steel, the nickel-titanium alloy has better mechanical property, is folding-resistant and fatigue-resistant, can meet the requirements of complex root canal therapy and retreatment, reduces the risk of instrument breakage in the root canal, and can meet the conventional requirements by stainless steel materials.

The utility model reduces the difficulty of completely taking out the gutta-percha after the root canal filling operation, especially when the gutta-percha is found to exceed the apical foramen, and is favorable for avoiding the postoperative complication caused by the gutta-percha fracture left outside the apical foramen; when the root canal is retreated, the utility model can be used for removing the original filling material or taking out the loose objects with the structures such as cotton balls, drug twists and the like in the root canal, avoiding pushing out the apical foramen to cause infection, and providing convenience for taking the super-tooth-filling gutta-percha, retreating the tooth-taking gutta-percha and taking the objects in the root canal.

Of course, the present invention may have other embodiments, and those skilled in the art may make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims

1. The utility model provides a file is taken out to root canal retreatment gutta percha, includes handle (1) and file pole (2), and definition handle end is the rear end, and the one end of keeping away from the handle is the front end, its characterized in that: the file rod (2) is provided with a cutting part (21), a burr part (22) and a smooth part (23) from the front end to the rear end in sequence; a plurality of barbs are uniformly distributed on the burr part (22).

2. The root canal retreatment gutta percha extraction file as recited in claim 1, wherein: the cutting part (21) is spiral with a sagittal plane approximately conical cross section approximately circular.

3. The root canal retreatment gutta percha extraction file as recited in claim 2, wherein: the taper of the sagittal plane of the cutting part (21) is 1-4 degrees.

4. The root canal retreatment gutta percha extraction file as recited in claim 3, wherein: the sagittal taper of the cutting part (21) is 2 degrees.

5. The root canal retreatment gutta percha extraction file as recited in claim 3, wherein: the diameter of the tip of the cutting part (21) is 0.15-0.4 mm.

6. The root canal retreatment gutta percha extraction file as recited in claim 3, wherein: the length of the cutting part (21) is 2-3 mm.

7. The root canal retreatment gutta percha extraction file as set forth in claim 1, wherein: the length of burr portion (22) is 8 ~ 10 mm.

8. The root canal retreatment gutta percha extraction file as recited in claim 1, wherein: the file rod (2) is made of stainless steel or nickel-titanium alloy materials.

9. The root canal retreatment gutta percha extraction file as recited in claim 1, wherein: the handle (1) is made of wood materials, plastic materials or metal materials.

10. The root canal retreatment gutta percha extraction file as recited in claim 9, wherein: the handle (1) is provided with an anti-skid structure.