An adjustable root canal preparation device

Abstract

This utility model belongs to the field of dental medical machinery technology, and particularly relates to a root canal preparation device with adjustable length. It includes a housing, a bending tube transmission assembly on the side of the housing, which meshes with a drive rod assembly rotatably connected within the housing. The drive rod assembly engages with a driven rod assembly slidably connected within the housing, and the driven rod assembly is slidably connected to a root canal file. The upper end of the root canal file is rotatably connected to an adjusting cover plate, which is threaded onto the upper end of the housing. A handle is installed at the end of the bending tube transmission assembly. A motor assembly within the handle drives the bending tube transmission assembly to rotate, which in turn drives the drive rod assembly, the driven rod assembly, and the root canal file. The root canal file grinds the tooth root canal. By rotating the adjusting cover plate, the root canal file is raised or lowered, thereby changing its extension length and adapting to grinding teeth of different mouth shapes and positions, thus exhibiting strong adaptability.

Description

Technical Field

[0001] This utility model belongs to the field of dental medical machinery technology, and in particular relates to a root canal preparation device that is easy to adjust in length. Background Technology

[0002] Root canal treatment is a core procedure in endodontics, aiming to remove infected or necrotic pulp tissue, clean and reshape the root canal system, and ultimately achieve tight filling of the root canals to preserve the affected tooth and restore its function. Currently, the root canal preparation equipment widely used in clinical practice mainly uses root canal preparation devices. Manual instrument operation relies on the dentist's experience and tactile feedback, and the depth is controlled by gradually inserting and withdrawing. However, the length of the root canal file is fixed and cannot be adjusted, which can easily lead to under-preparation or over-preparation problems. It is necessary to change root canal files of different lengths, which prolongs the treatment time.

[0003] For example, Chinese patent application number CN202222861582.5 discloses a root canal preparation machine that is easy to disassemble and install, including a head assembly and a handle assembly. The head assembly includes a head housing, with a head at one end and a head connecting part at the other end. The handle assembly includes a handle housing, with a handle connecting part at one end. The head connecting part includes a slot, a guide post, and a button assembly. The handle connecting part includes a plug, a guide groove, and a spring limiting assembly. However, the disadvantage of this technical solution is that the length of the root canal file inside the head is fixed and cannot be adjusted, which can easily lead to under-preparation or over-preparation problems. Utility Model Content

[0004] The purpose of this invention is to provide a root canal preparation device with easily adjustable length to solve the problems in the prior art. The specific technical solution is as follows:

[0005] An adjustable root canal preparation device includes a housing, a tube bending drive assembly on the side of the housing, the tube bending drive assembly engaging with a drive rod assembly rotatably connected inside the housing, the drive rod assembly engaging with a driven rod assembly slidably connected inside the housing, the driven rod assembly slidably connected to a root canal file, the upper end of the root canal file being rotatably connected to an adjusting cover plate, and the adjusting cover plate being threadedly connected to the upper end of the housing.

[0006] Furthermore, the housing is rotatably connected to the end of the adjusting screw, and the adjusting screw is threadedly connected to the driven rod assembly.

[0007] Furthermore, the bending tube transmission assembly includes a bending tube, which is fixedly installed on the side of the housing. A rod sleeve is provided inside the bending tube, and a gear rod is rotatably connected inside the rod sleeve. The gear rod meshes with the drive rod assembly for transmission.

[0008] Furthermore, the active rod assembly includes a bevel gear that rotates within the housing and meshes with the end of a gear rod for transmission. An active rod is slidably connected inside the bevel gear, and an active turntable is fixed to the upper end of the active rod. The active turntable engages with the driven rod assembly for transmission.

[0009] Furthermore, a spring is provided between the bevel gear and the drive turntable.

[0010] Furthermore, the driven rod assembly includes a support plate, which slides within the housing. A driven turntable is rotatably connected within the support plate, and the driven turntable engages with the driving turntable for transmission.

[0011] Furthermore, the driven turntable is fixedly connected to the driven rod, the driven rod rotates inside the driving rod, and a root canal file is slidably connected inside the driven rod.

[0012] Furthermore, an adjusting block is fixed to the side of the support plate, and the adjusting screw is threadedly connected to the adjusting block.

[0013] Furthermore, the adjusting cover plate includes a threaded cover plate, which is threadedly connected to the upper end of the housing, and the upper end of the root canal file is rotatably connected to the threaded cover plate.

[0014] Furthermore, an adjusting nut is fixed to the upper end of the threaded cover plate.

[0015] The advantages of this utility model are:

[0016] 1. A handle is installed at the end of the bending tube transmission assembly. The motor assembly inside the handle drives the bending tube transmission assembly to rotate, which in turn drives the drive rod assembly to rotate, which in turn drives the driven rod assembly to rotate, which in turn drives the root canal file to rotate. The root canal file grinds the tooth root canal. By rotating the adjusting cover plate, the root canal file is raised or lowered, thereby changing the extension length of the root canal file, thus adapting to the grinding of teeth with different mouth shapes and positions, and has strong adaptability.

[0017] 2. When the root canal file encounters resistance exceeding the preset value, the root canal file and the driven rod assembly are restricted from rotating, and the driving rod assembly and the driven rod assembly slide, which can prevent the motor assembly from burning out or the parts from being damaged, thereby increasing the service life of the overall device. Attached Figure Description

[0018] Figure 1 This is an exploded view of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the overall structure of the present invention. Figure 3 ;

[0022] Figure 5 This is a schematic diagram of the active rod assembly structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the driven rod assembly structure of this utility model;

[0024] Explanation of markings in the diagram:

[0025] Adjusting cover plate 1; threaded cover plate 101; adjusting nut 102; driven rod assembly 2; support plate 201; driven turntable 202; driven rod 203; adjusting block 204; housing 3; adjusting screw 4; driving rod assembly 5; bevel gear 501; driving turntable 502; driving rod 503; spring 504; root canal file 6; tube bending transmission assembly 7; gear rod 701; rod sleeve 702; tube bend 703. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] Example 1

[0029] like Figures 1-6 As shown, a root canal preparation device with adjustable length includes a housing 3. A tube bending transmission assembly 7 is provided on the side of the housing 3. The tube bending transmission assembly 7 engages with a drive rod assembly 5 rotatably connected inside the housing 3. The drive rod assembly 5 engages with a driven rod assembly 2 slidably connected inside the housing 3. The driven rod assembly 2 is slidably connected to a root canal file 6. The upper end of the root canal file 6 is rotatably connected to an adjusting cover plate 1. The adjusting cover plate 1 is threadedly connected to the upper end of the housing 3.

[0030] The working principle of the above technical solution is as follows: A handle is installed at the end of the bending tube transmission assembly 7. The motor assembly inside the handle drives the bending tube transmission assembly 7 to rotate, which in turn drives the active rod assembly 5 to rotate, drives the driven rod assembly 2 to rotate, and drives the root canal file 6 to rotate. The root canal file 6 grinds the tooth root canal. By rotating the adjusting cover plate 1, the root canal file 6 is raised or lowered, thereby changing the extension length of the root canal file 6, thus adapting to the grinding of teeth with different mouth shapes and positions, and has strong adaptability.

[0031] In addition, when the root canal file 6 encounters resistance exceeding a preset value, the root canal file 6 and the driven rod assembly 2 are restricted from rotating, and the driving rod assembly 5 and the driven rod assembly 2 slide, which can prevent the motor assembly from burning out or the parts from being damaged, thereby increasing the service life of the overall device.

[0032] Example 2

[0033] like Figures 1-6 As shown, the housing 3 is rotatably connected to the end of the adjusting screw 4, and the adjusting screw 4 is threadedly connected to the driven rod assembly 2;

[0034] The working principle of the above technical solution is as follows: Rotating the adjusting screw 4 causes the driven rod assembly 2 to rise or fall within the housing 3, thereby changing the pressure between the active rod assembly 5 and the driven rod assembly 2, which in turn changes the locking force between the active rod assembly 5 and the driven rod assembly 2, and changes the preset resistance value when the root canal file 6 encounters resistance, thus adapting to different working scenarios.

[0035] Example 3

[0036] like Figures 1-6 As shown, the bending tube transmission assembly 7 includes a bending tube 703, which is fixedly installed on the side of the housing 3. A rod sleeve 702 is provided inside the bending tube 703, and a gear rod 701 is rotatably connected inside the rod sleeve 702. The gear rod 701 meshes with the drive rod assembly 5 for transmission.

[0037] The working principle of the above technical solution is as follows: A handle is installed at the end of the bent tube 703. The motor assembly inside the handle drives the gear rod 701 to rotate, which in turn drives the active rod assembly 5 to rotate, which in turn drives the driven rod assembly 2 to rotate, which in turn drives the root canal file 6 to rotate. The root canal file 6 grinds the tooth root canal. The sleeve 702 ensures the stable rotation of the gear rod 701 and prevents it from moving easily.

[0038] Example 4

[0039] like Figures 1-6 As shown, the active rod assembly 5 includes a bevel gear 501, which rotates inside the housing 3. The bevel gear 501 meshes with the end of the gear rod 701 for transmission. An active rod 503 is slidably connected inside the bevel gear 501. An active turntable 502 is fixed at the upper end of the active rod 503. The active turntable 502 is engaged with the driven rod assembly 2 for transmission.

[0040] A spring 504 is provided between the bevel gear 501 and the drive turntable 502;

[0041] The working principle of the above technical solution is as follows: The motor assembly inside the handle drives the gear rod 701 to rotate, which in turn drives the bevel gear 501 to rotate, which in turn drives the active rod 503 to rotate, which in turn drives the active turntable 502 to rotate. Under the elastic force of the spring 504, the spring 504 pushes the active turntable 502 against the driven rod assembly 2, which drives the driven rod assembly 2 to rotate, which in turn drives the root canal file 6 to rotate. The root canal file 6 performs grinding on the tooth root canal.

[0042] When the root canal file 6 encounters resistance exceeding a preset value, the root canal file 6 and the driven rod assembly 2 are restricted from rotating, the drive turntable 502 slides between the driven rod assembly 2, and the spring 504 is compressed, which can prevent the motor assembly from burning out or the parts from being damaged, thereby increasing the service life of the overall device.

[0043] Example 5

[0044] like Figures 1-6 As shown, the driven rod assembly 2 includes a support disk 201, which slides inside the housing 3. A driven turntable 202 is rotatably connected inside the support disk 201, and the driven turntable 202 is engaged with the driving turntable 502 for transmission.

[0045] The driven turntable 202 is fixedly connected to the driven rod 203. The driven rod 203 rotates within the driving rod 503. A root canal file 6 is slidably connected within the driven rod 203.

[0046] An adjusting block 204 is fixed to the side of the support plate 201, and the adjusting screw 4 is threadedly connected to the adjusting block 204.

[0047] The working principle of the above technical solution is as follows: The motor assembly inside the handle drives the gear rod 701 to rotate, which in turn drives the bevel gear 501 to rotate, which in turn drives the active rod 503 to rotate, which in turn drives the active turntable 502 to rotate. Under the elastic force of the spring 504, the spring 504 pushes the active turntable 502 against the driven rod assembly 2, which drives the driven turntable 202 to rotate, which in turn drives the driven rod 203 to rotate, which in turn drives the root canal file 6 to rotate. The root canal file 6 performs grinding on the tooth root canal.

[0048] When the root canal file 6 encounters resistance exceeding the preset value, the root canal file 6 and the driven rod 203 are restricted from rotating, the driving turntable 502 and the driven turntable 202 slide, and the spring 504 is compressed, which can prevent the motor assembly from burning out or the parts from being damaged, thereby increasing the service life of the entire device.

[0049] Rotating the adjusting screw 4 causes the driven rod assembly 2 to rise or fall within the housing 3, thereby changing the pressure between the driving rod assembly 5 and the driven rod assembly 2, which in turn changes the engagement force between the driving rod assembly 5 and the driven rod assembly 2, thus changing the preset resistance value of the root canal file 6 to adapt to different working scenarios.

[0050] Rotating the adjusting screw 4 causes the support plate 201 to rise or fall within the housing 3, which in turn causes the active turntable 502 to rise or fall, changing the initial elastic force of the spring 504, thereby changing the engagement force between the active turntable 502 and the driven turntable 202, and changing the preset resistance value when the root canal file 6 encounters resistance, adapting to different working scenarios.

[0051] Example 6

[0052] like Figures 1-6 As shown, the adjusting cover plate 1 includes a threaded cover plate 101, which is threadedly connected to the upper end of the housing 3, and the upper end of the root canal file 6 is rotatably connected to the threaded cover plate 101.

[0053] An adjusting nut 102 is fixed to the upper end of the threaded cover plate 101;

[0054] The working principle of the above technical solution is as follows: rotating the adjusting nut 102 causes the threaded cover plate 101 to rotate, which in turn causes the root canal file 6 to rise or fall within the driven rod 203, thereby changing the extension length of the root canal file 6 and adapting it to the grinding of teeth with different mouth shapes and positions, thus having strong adaptability.

[0055] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A root canal preparation device for facilitating length adjustment, characterized in that, Includes a housing (3), and a bending tube transmission assembly (7) is provided on the side of the housing (3). The bending tube transmission assembly (7) meshes with the active rod assembly (5) which is rotatably connected in the housing (3). The active rod assembly (5) engages with the driven rod assembly (2) which is slidably connected in the housing (3). The driven rod assembly (2) is slidably connected to the root canal file (6). The upper end of the root canal file (6) is rotatably connected to the adjusting cover plate (1). The adjusting cover plate (1) is threadedly connected to the upper end of the housing (3).

2. A root canal preparation device for ease of length adjustment according to claim 1, wherein, The housing (3) is rotatably connected to the end of the adjusting screw (4), and the adjusting screw (4) is threadedly connected to the driven rod assembly (2).

3. A root canal preparation device for ease of length adjustment according to claim 2, wherein, The bending tube transmission assembly (7) includes a bending tube (703), which is fixedly installed on the side of the housing (3). A rod sleeve (702) is provided inside the bending tube (703), and a gear rod (701) is rotatably connected inside the rod sleeve (702). The gear rod (701) meshes with the drive rod assembly (5) for transmission.

4. A root canal preparation device for ease of length adjustment according to claim 3, wherein, The active rod assembly (5) includes a bevel gear (501), which rotates inside the housing (3). The bevel gear (501) meshes with the end of the gear rod (701) for transmission. An active rod (503) is slidably connected inside the bevel gear (501). An active turntable (502) is fixed at the upper end of the active rod (503). The active turntable (502) engages with the driven rod assembly (2) for transmission.

5. A root canal preparation device for ease of length adjustment according to claim 4, wherein, A spring (504) is provided between the bevel gear (501) and the drive turntable (502).

6. A root canal preparation device for ease of length adjustment according to claim 5, wherein, The driven rod assembly (2) includes a support plate (201), which slides inside the housing (3). A driven turntable (202) is rotatably connected inside the support plate (201), and the driven turntable (202) is engaged with the driving turntable (502) for transmission.

7. A root canal preparation device for ease of length adjustment according to claim 6, wherein, The driven turntable (202) is fixedly connected to the driven rod (203), the driven rod (203) rotates inside the driving rod (503), and a root canal file (6) is slidably connected inside the driven rod (203).

8. A root canal preparation device for ease of length adjustment according to claim 7, wherein, An adjusting block (204) is fixed to the side of the support plate (201), and the adjusting screw (4) is threadedly connected to the adjusting block (204).

9. A root canal preparation device with adjustable length according to claim 8, characterized in that, The adjusting cover plate (1) includes a threaded cover plate (101), which is threadedly connected to the upper end of the housing (3), and the upper end of the root canal file (6) is rotatably connected to the threaded cover plate (101).

10. A root canal preparation device with adjustable length according to claim 9, characterized in that, An adjusting nut (102) is fixed to the upper end of the threaded cover plate (101).

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