Root canal file capable of accurately measuring working length of root canal

Abstract

The utility model provides a root canal file capable of accurately measuring the working length of a root canal, and relates to the field of root canal files, the root canal file capable of accurately measuring the working length of the root canal comprises a handle, a needle body and a limiting device, the top of the handle is provided with a placing groove, the bottom wall of an inner cavity of the placing groove is provided with a through hole, and the needle body is movably inserted into the through hole in the inner wall of the placing groove; the root canal file comprises a needle body and a limiting device, a containing groove is formed in the needle body, a plurality of length prompting areas are arranged on the surface of the needle body at equal intervals, the limiting device is installed in the containing groove, and the limiting device is used for limiting the needle body. In addition, when the needle body is damaged, the needle body can be mounted or dismounted by rotating the first lantern ring, so that the needle body can be replaced independently, and the effect of saving cost is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of root canal files, especially to a root canal file for accurately measuring root canal working length. BACKGROUND

[0002] A root canal file is an important tool used in dental treatment for root canal treatment (also known as endodontic treatment). Root canal treatment is mainly aimed at the infection or inflammation inside the tooth, usually caused by tooth decay, tooth cracks or other damage to the dental pulp (the part inside the tooth containing nerves and blood vessels). The goal of root canal treatment is to remove the infected dental pulp tissue, clean and shape the root canal system, and then tightly fill it to prevent reinfection.

[0003] During the root canal expansion process, different types of files are selected for operation, and each time the vernier needs to be fixed at this position to guide clinical operation. However, during the root canal treatment process, the plastic vernier is easily displaced, often leading to inaccurate length control during the root canal expansion process, resulting in underfilling or overfilling of the root canal, and the doctor needs to move the vernier during the operation and then use a measuring ruler to measure. These make the clinical operation more complex, and also prolong the patient's treatment time and the clinical chair occupation time.

[0004] Therefore, it is necessary to provide a new root canal file for accurately measuring root canal working length to solve the above technical problems. SUMMARY

[0005] To solve the above technical problems, the utility model provides a root canal file for accurately measuring root canal working length.

[0006] The root canal file for accurately measuring root canal working length provided by the utility model comprises a handle, a needle body and a limiting device, a placing groove is formed at the top of the handle, a through hole is formed in the bottom wall of the inner cavity of the placing groove, the needle body is movably inserted into the through hole in the inner wall of the placing groove, a plurality of length prompt areas are equidistantly arranged on the surface of the needle body, and the limiting device is installed in the placing groove and used for limiting the needle body.

[0007] The limiting device comprises a fixing ring, a driving member and a plurality of moving members, the fixing ring is fixedly connected to the inner wall of the placing groove, the driving member is sleeved on the fixing ring, the plurality of moving members are uniformly inserted into the side wall of the fixing ring, the driving member can drive the plurality of moving members to move towards the inner side of the fixing ring, the end portion of the moving member located on the inner side of the fixing ring is slidably provided with a positioning block, the positioning block is provided with a downward inclined surface at one end, and the other end of the positioning block is installed on the moving member through a first spring.

[0008] Preferably, the driving component includes a first collar, a second collar, and a plurality of inclined driving blocks. The first collar is threaded onto the fixed ring, the second collar is sleeved onto the fixed ring, and the second collar is rotatably connected to the first collar. The plurality of inclined driving blocks are all fixedly connected to the second collar.

[0009] Preferably, the moving component includes an inclined follower block, a vertical plate, and a second spring. The inclined follower block movably passes through the side wall of the fixed ring, and the inclined surface of the inclined follower block is in contact with the inclined surface of the inclined drive block. The positioning block is slidably disposed in a groove opened at the end of the inclined follower block. The two ends of the first spring are respectively fixedly connected to the end of the positioning block and the bottom wall of the groove of the inclined follower block. The vertical plate is fixed on the inclined follower block, and the two ends of the second spring are respectively fixed to the side wall of the vertical plate and the inner wall of the fixed ring.

[0010] Preferably, a movable block is fixed on the inner wall of the second ring, and one end of the movable block is slidably disposed in a groove opened on the outer surface of the fixed ring.

[0011] Preferably, a baffle is fixedly connected to the inner wall of the fixing ring near the top.

[0012] Preferably, there are 8 length indication areas, each with a length of 0.5 mm. The distance between two adjacent length indication areas is equal to the length of the length indication area. The 8 length indication areas are marked with different colors, and each length indication area has a numerical scale indication.

[0013] Compared with related technologies, the root canal file for accurately measuring the working length of root canals provided by this utility model has the following beneficial effects:

[0014] When the needle is damaged during use, the device can be installed or removed by rotating the first ring. Therefore, the needle can be replaced separately, which saves costs.

[0015] This device has a length indication area on the needle body, so when measuring the working length of the root canal, you can directly measure according to the length indication area without using a measuring ruler. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of the root canal file for accurately measuring the working length of the root canal provided by this utility model;

[0017] Figure 2 for Figure 1 The diagram shows the structure of the limiting device.

[0018] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the structure.

[0019] The figure label: 1, handle; 2, needle body; 3, fixed ring; 4, positioning block; 5, first spring; 6, first sleeve ring; 7, second sleeve ring; 8, inclined surface driving block; 9, inclined surface driven block; 10, vertical plate; 11, second spring; 12, moving block; 13, baffle; 14, length prompt area; 15, placing groove. DETAILED DESCRIPTION

[0020] The utility model will be further described below in combination with the drawings and embodiments.

[0021] Please refer to Figures 1-3 , wherein, Figure 1 The structure schematic view of the root canal file for accurately measuring the working length of root canal provided by the utility model; Figure 2 is Figure 1 The structure schematic view of the limiting device shown; Figure 3 is Figure 2 The structure schematic view of the structure shown in the section.

[0022] In the specific implementation process, as Figures 1-3 Shown, including handle 1, needle body 2 and limiting device, the top of handle 1 is provided with placing groove 15, the bottom wall of the inner cavity of placing groove 15 is provided with through hole, needle body 2 is movably inserted into the through hole of the inner wall of placing groove 15, a plurality of length prompt areas 14 are equidistantly arranged on the surface of needle body 2, the limiting device is installed in placing groove 15, the limiting device is used for limiting needle body 2, the limiting device includes fixed ring 3, driving part and a plurality of moving parts, fixed ring 3 is fixedly connected to the inner wall of placing groove 15, driving part is sleeved on fixed ring 3, a plurality of moving parts are evenly inserted into the side wall of fixed ring 3, driving part can drive a plurality of moving parts to move to the inside of fixed ring 3, the end portion of moving part located at the inside of fixed ring 3 is slidably provided with positioning block 4, one end of positioning block 4 is inclined surface downward, the other end of positioning block 4 is installed on moving part through first spring 5, when needle body 2 moves to a plurality of positioning blocks 4, the inclined surface of a plurality of positioning blocks 4 is extruded, so that positioning block 4 moves to the groove inner wall of inclined surface driven block 9, first spring 5 is compressed, under the action of first spring 5, positioning block 4 exerts certain force on needle body 2, which plays the role of preliminary positioning and limiting of needle body 2;

[0023] The driving member comprises a first collar 6, a second collar 7 and a plurality of inclined driving blocks 8, the first collar 6 is threadedly sleeved on the fixed ring 3, the second collar 7 is sleeved on the fixed ring 3, and the second collar 7 is rotationally connected with the first collar 6, a moving block 12 is fixed on the inner wall of the second collar 7, one end of the moving block 12 is slidingly arranged in a groove formed on the outer surface of the fixed ring 3, and the plurality of inclined driving blocks 8 are all fixedly connected on the second collar 7; the moving member comprises an inclined driven block 9, a vertical plate 10 and a second spring 11, the inclined driven block 9 is movably penetrated through the side wall of the fixed ring 3, the inclined surface of the inclined driven block 9 is in abutment with the inclined surface of the inclined driving block 8, the positioning block 4 is slidingly arranged in a groove formed at the end of the inclined driven block 9, the first spring 5 is fixedly connected at both ends to the end of the positioning block 4 and the bottom wall of the groove of the inclined driven block 9, the vertical plate 10 is fixed on the inclined driven block 9, and both ends of the second spring 11 are fixed on the side wall of the vertical plate 10 and the inner wall of the fixed ring 3; when the first collar 6 is rotated, the second collar 7 is limited by the moving block 12, so that when the first collar 6 is rotated, the second collar 7 drives the plurality of inclined driving blocks 8 to move downward, the plurality of inclined driving blocks 8 press the plurality of inclined driven blocks 9 to move inward of the fixed ring 3, the second spring 11 is stretched, and the first spring 5 is compressed; finally, the end of the inclined driving block 8 abuts against the needle body 2, so that the needle body 2 is limited.

[0024] The inner wall of the fixed ring 3 near the top is fixedly connected with a baffle 13, and the baffle 13 is arranged to enable the needle body 2 to move to a suitable position.

[0025] 8 length prompt areas 14 (the length prompt areas can also be distinguished by different colors and be provided with numerical scales) are plated on the surface of the tungsten steel, and are not prone to displacement and other problems, and help doctors to accurately control the length of the prepared post channel; the 8 length prompt areas 14 are arranged, and the length of each length prompt area 14 is 0.5 mm; the distance between two adjacent length prompt areas 14 is equal to the length of the length prompt area 14; the lower edge of the first length prompt area 14 is 10 mm away from the needle tip, and the upper edge of the eighth length prompt area 14 is 17.5 mm away from the needle tip; the length prompt areas 14 are arranged, so that the dentist can directly measure according to the length prompt areas 14 when measuring the working length of the root canal, and does not need to use a measuring scale again; compared with the traditional root canal file, the vernier is not needed, the clinical steps are simplified, the treatment time of the patient is shortened, the chair occupation time of the clinic is saved, and the success rate of root filling is improved.

[0026] The working principle of the device is as follows: when the device is used, the top end of the needle body 2 is inserted into the through hole of the placing groove 15, so that the top end of the needle body 2 abuts against the baffle 13; when the needle body 2 moves to the plurality of positioning blocks 4, the inclined surfaces of the plurality of positioning blocks 4 are extruded, so that the positioning block 4 moves to the groove inner wall of the inclined driven block 9, and the first spring 5 is compressed; under the action of the first spring 5, the positioning block 4 exerts a certain force on the needle body 2, which plays a role of preliminary positioning and limiting of the needle body 2; then, the first sleeve ring 6 is rotated; since the second sleeve ring 7 is limited by the moving block 12, when the first sleeve ring 6 rotates, the second sleeve ring 7 drives the plurality of inclined driving blocks 8 to move downward, the plurality of inclined driving blocks 8 extrude the plurality of inclined driven blocks 9 to move to the inner side of the fixed ring 3, the second spring 11 is stretched, and the first spring 5 is compressed; finally, the end of the inclined driving block 8 abuts against the needle body 2, limiting the needle body 2; at the same time, the positioning block 4 also exerts a force on the needle body 2, improving the stability of the needle body 2 after limiting; when the needle body 2 is damaged during use of the device, the needle body 2 can be replaced alone, thereby saving cost; in addition, the device is provided with the length prompt area 14 on the needle body 2, so that the length prompt area 14 can be directly measured when the root canal working length is measured, and a measuring scale is not needed.

[0027] The circuit and the control involved in the utility model are prior art, and too much elaboration is not made here.

[0028] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structures or equivalent process transformations made by using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields are also included in the patent protection range of the utility model.

Claims

1. A root canal file for precise measurement of root canal working length, characterized in that, The device includes a handle (1), a needle body (2), and a limiting device. The top of the handle (1) is provided with a placement groove (15), and the bottom wall of the inner cavity of the placement groove (15) is provided with a through hole. The needle body (2) is movably inserted into the through hole of the inner wall of the placement groove (15). Multiple length indication areas (14) are equidistantly arranged on the surface of the needle body (2). The limiting device is installed in the placement groove (15) and is used to limit the needle body (2). The limiting device includes a fixed ring (3), a driving component, and multiple moving components. The fixed ring (3) is fixedly connected to the inner wall of the placement groove (15). The driving component is sleeved on the fixed ring (3). Multiple moving components are evenly inserted on the side wall of the fixed ring (3). The driving component can drive multiple moving components to move towards the inside of the fixed ring (3). A positioning block (4) is slidably provided at the end of the moving component located inside the fixed ring (3). One end of the positioning block (4) is inclined downward, and the other end of the positioning block (4) is installed on the moving component by a first spring (5).

2. The root canal file for precise measurement of root canal working length according to claim 1, characterized in that, The driving component includes a first collar (6), a second collar (7), and a plurality of inclined driving blocks (8). The first collar (6) is threaded onto the fixed ring (3), the second collar (7) is sleeved onto the fixed ring (3), and the second collar (7) is rotatably connected to the first collar (6). The plurality of inclined driving blocks (8) are all fixedly connected to the second collar (7).

3. The root canal file for precise measurement of root canal working length according to claim 2, characterized in that, The moving part includes an inclined follower block (9), a vertical plate (10), and a second spring (11). The inclined follower block (9) is movably inserted through the side wall of the fixed ring (3). The inclined surface of the inclined follower block (9) is in contact with the inclined surface of the inclined drive block (8). The positioning block (4) is slidably disposed in the groove opened at the end of the inclined follower block (9). The two ends of the first spring (5) are respectively fixedly connected to the end of the positioning block (4) and the bottom wall of the groove of the inclined follower block (9). The vertical plate (10) is fixed on the inclined follower block (9). The two ends of the second spring (11) are respectively fixed on the side wall of the vertical plate (10) and the inner wall of the fixed ring (3).

4. The root canal file for precise measurement of root canal working length according to claim 3, characterized in that, A movable block (12) is fixed on the inner wall of the second ring (7), and one end of the movable block (12) is slidably disposed in the groove opened on the outer surface of the fixed ring (3).

5. The root canal file for precise measurement of root canal working length according to claim 4, characterized in that, A baffle (13) is fixedly connected to the inner wall of the fixed ring (3) near the top.

6. The root canal file for precise measurement of root canal working length according to claim 5, characterized in that, There are 8 length indication areas (14), each length indication area (14) is 0.5mm long, the distance between two adjacent length indication areas (14) is equal to the length of the length indication area (14), the 8 length indication areas (14) are marked with different colors, and each length indication area (14) has a numerical scale indication.

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