Root canal gutta-percha cleaning device

Abstract

The utility model relates to a root canal gutta-percha cleaning device which comprises a handle, a connecting neck, a working head, a rotary driving device and a heating device, the connecting neck is arranged between the handle and the working head, a bending part is arranged at one end, close to the working head, of the connecting neck, and the heating device is arranged at the other end of the connecting neck. A certain included angle is formed between the axis of the working head and the axis of the handle; the rotary driving device is used for driving the working head to rotate around the axis of the working head; the heating device is arranged in the handle, the connecting neck and the working head and is used for heating the working head; the working head is installed at the end, away from the handle, of the connecting neck and can rotate around the axis of the working head, and a gutta-percha embedding structure is arranged on the outer surface of the working head. The gutta-percha extractor is more convenient to hold and operate, when the gutta-percha is taken out, the gutta-percha is subjected to tangential force brought by rotation and axial force brought by pulling, the gutta-percha is more convenient to take out from a root canal integrally, operation is convenient, and cleaning is more thorough.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a root canal gutta-percha cleaning device. Background Technology

[0002] Root canal treatment is the preferred and most effective treatment for pulpitis and periapical periodontitis. The principle of root canal treatment is to remove infected material from the root canal using mechanical and chemical methods, and then fill the root canal and seal the coronal portion to prevent periapical lesions or promote the healing of existing periapical lesions. If overfilling or underfilling occurs after root canal filling during treatment, the gutta-percha in the periapical segment needs to be removed. Currently, in clinical practice, stainless steel H-files or pulp avulsion tools are commonly used to remove gutta-percha from root canals. The H-file for root canals uses the interlocking force created by screwing the file into the gutta-percha to pull it out of the root canal. However, because the gutta-percha is tightly packed in the root canal, it has a strong retention force with the canal wall. Since the file itself has a certain taper, if it is screwed in too shallowly, the upper part of the gutta-percha is easily crushed, making it impossible to remove the entire piece and making it difficult to clean up the debris later. When using a plucking needle to remove gutta-percha, it is necessary to first use a heat carrier that can generate high temperature to melt the upper part of the gutta-percha, and then insert the plucking needle into the softened gutta-percha. After it cools and hardens, you can try to pull out the gutta-percha. This method makes it easier to remove the gutta-percha in one piece. However, currently, disposable plucking needles are mostly used in clinical practice. They are soft and do not have a handle at the end for easy holding.

[0003] To address the aforementioned problems, Chinese patent CN216985203U discloses a heated working tip and a tool for root canal retreatment. The tool includes a working tip with a heating device connected to its wide end; and a concave-convex structure disposed at the narrow end of the working tip. This structure connects with the gutta-percha as the working tip enters the gutta-percha and prevents the working tip from exiting the gutta-percha. In contrast, the heated working tip in the prior art, used for removing gutta-percha from the root canal, first heats the tool to facilitate insertion of the cooled gutta-percha. After insertion, the portion of the gutta-percha in contact with the concave-convex structure softens and integrates into the structure. Heating is then stopped, and the tool cools, allowing the gutta-percha to solidify again. At this point, the gutta-percha integrated into the concave-convex structure forms a dense and strong connection with it. Removing the working tip causes the concave-convex structure to apply an axial force to the gutta-percha, thus pulling it out. This solves the technical problem of difficult gutta-percha removal in the prior art.

[0004] However, the aforementioned existing technology still has some problems. Because the retention between gutta-percha and the root canal wall is relatively strong, it is difficult to pull out the working tip after it is connected to the gutta-percha. It requires a lot of force and sometimes the gutta-percha is not completely removed. At the same time, the patient will also feel a pulling sensation. Utility Model Content

[0005] The present invention aims to provide a root canal gutta-percha cleaning device to overcome the shortcomings of the prior art. The technical problem to be solved by the present invention is achieved through the following technical solution.

[0006] A root canal gutta-percha cleaning device includes a handle, a connecting neck, a working head, a rotary drive mechanism, and a heating device. The connecting neck is disposed between the handle and the working head for connecting the two. The end of the connecting neck near the working head has a bend, so that the axis of the working head forms a certain angle with the axis of the handle. The rotary drive mechanism is disposed within the handle and the connecting neck for driving the working head to rotate around its own axis. The heating device is disposed within the handle, the connecting neck, and the working head for heating the working head. The working head is mounted on the end of the connecting neck away from the handle and can rotate around its own axis. The outer surface of the working head has a gutta-percha fitting structure for embedding into the gutta-percha within the root canal to facilitate removal of the gutta-percha. A button is provided on the handle for controlling the operation of the rotary drive mechanism and the heating device.

[0007] Preferably, the button includes a heating button and a rotation button, wherein the heating button is used to control the operation of the heating device, and the rotation button is used to control the operation of the rotation drive device.

[0008] Preferably, the button is located on the front left side of the handle.

[0009] Preferably, the rotary drive device includes a micro motor installed inside the handle. The output end of the micro motor is fixedly connected to the driving bevel gear. The driving bevel gear is located at one end of the connecting neck near the working head. A driven bevel gear is installed at the upper end of the working head. After the working head is installed on the connecting neck, the driving bevel gear and the driven bevel gear mesh with each other.

[0010] Preferably, the output end of the micro motor is fixedly connected to the drive shaft, a bushing is installed inside the connecting neck, the drive shaft passes through the bushing, and one end of the drive shaft that passes through the bushing is fixedly connected to the drive bevel gear.

[0011] Preferably, the upper end of the working head is fixedly connected to the driven bevel gear via a driven shaft, and a seated bearing is mounted on the outside of the driven shaft. The upper end of the seated bearing is fixedly connected to the end of the connecting neck, so that the working head is connected to the connecting neck.

[0012] Preferably, the heating device includes a power module and a heating wire that are electrically connected to each other. The power module is installed inside the handle, and the heating wire is disposed inside the working head.

[0013] Preferably, the gutta-percha interlocking structure consists of a plurality of protrusions evenly arranged on the outer surface of the working head.

[0014] Preferably, the protrusion is in the shape of a wolf tooth or a four-sided pyramid with the tip curved upwards.

[0015] Preferably, the gutta-percha interlocking structure is a spiral protrusion or groove covering the outer surface of the working head.

[0016] In this invention, when using the root canal gutta-percha cleaning device, hold the handle and first place the end of the working head against the exposed gutta-percha of the tooth. Control the heating device to work using the button on the handle to heat the working head, thereby softening the gutta-percha in the root canal, making it easier for the working head to be inserted into the softened gutta-percha. As the gutta-percha continues to soften, after the working head is inserted to a certain depth, the gutta-percha fully integrates with the gutta-percha fitting structure of the working head. Control the heating device to stop heating using the button. After the gutta-percha cools and hardens again, control the rotation drive device to work using the button to drive the working head to rotate. At the same time, hold the handle and pull the working head outward, so that the gutta-percha is more easily removed from the root canal as a whole under the action of rotational tangential force and pulling axial force, reducing the pulling sensation.

[0017] This utility model provides a root canal gutta-percha cleaning device. The handle makes it easier to hold and operate; the buttons, rotation drive, and heating device facilitate the integration of the gutta-percha fitting structure with the gutta-percha. Furthermore, during gutta-percha removal, the device applies tangential force from rotation and axial force from pulling, making it easier to remove the gutta-percha as a whole from the root canal. This makes operation convenient, cleaning more thorough, and improves the patient's treatment experience, reducing their fear of treatment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the rotary drive device in this utility model;

[0020] Figure 3 This is a schematic diagram of one embodiment of the gutta-percha interlocking structure on the working head in this utility model;

[0021] Figure 4 This is a schematic diagram of another embodiment of the gutta-percha fitting structure on the working head in this utility model;

[0022] Figure 5This is a schematic diagram of another embodiment of the gutta-percha fitting structure on the working head of this utility model; the reference numerals in the figure are as follows: 1, handle, 2, button, 21, heating button, 22, rotary button, 3, connecting neck, 4, working head, 5, rotary drive device, 51, micro motor, 52, drive shaft, 53, drive bevel gear, 54, driven bevel gear, 55, bearing with seat, 56, bushing, 6, heating wire. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] An improved root canal gutta-percha cleaning device includes a handle 1, a connecting neck 3, a working head 4, a rotary drive mechanism, and a heating device. The connecting neck 3 is disposed between the handle 1 and the working head 4, connecting the two. The end of the connecting neck 3 near the working head 4 has a bend, so that the axis of the working head 4 forms a certain angle with the axis of the handle 1. The rotary drive mechanism is disposed within the handle 1 and the connecting neck 3, driving the working head 4 to rotate around its own axis. The heating device is disposed within the handle 1, the connecting neck 3, and the working head 4, heating the working head 4. The working head 4 is mounted on the end of the connecting neck 3 away from the handle 1 and can rotate around its own axis. The outer surface of the working head 4 has a gutta-percha fitting structure, which is used to embed into the gutta-percha within the root canal to facilitate removal of the gutta-percha. The handle 1 has a button 2 for controlling the operation of the rotary drive mechanism and the heating device.

[0025] In this embodiment, when using the gutta-percha cleaning device, hold the handle 1 and first place the end of the working head 4 against the exposed gutta-percha of the tooth. Control the heating device to work using the button 2 on the handle 1 to heat the working head 4, thereby softening the gutta-percha in the root canal and making it easier for the working head 4 to be inserted into the softened gutta-percha. As the gutta-percha continues to soften, after the working head 4 is inserted to a certain depth, the gutta-percha fully combines with the gutta-percha fitting structure of the working head 4. Control the heating device to stop heating using the button 2. After the gutta-percha cools and hardens again, control the rotation drive device to work using the button 2 to drive the working head 4 to rotate. At the same time, hold the handle and pull the working head 4 outward, so that the gutta-percha is more smoothly removed from the root canal as a whole under the action of rotational tangential force and pulling axial force, reducing the pulling sensation.

[0026] This embodiment provides a gutta-percha cleaning device for root canals. The handle makes it easier to hold and operate; the buttons, rotation drive, and heating device facilitate the integration of the gutta-percha fitting structure with the gutta-percha. Furthermore, during gutta-percha removal, the device applies tangential force from rotation and axial force from pulling, making it easier to remove the gutta-percha as a whole from the root canal. This makes operation convenient, cleaning more thorough, and improves the patient's treatment experience, reducing their fear of treatment.

[0027] Furthermore, the button 2 includes a heating button 21 and a rotary button 22. The heating button 21 is used to control the operation of the heating device, and the rotary button 22 is used to control the operation of the rotary drive device.

[0028] Furthermore, the button 2 is located on the front left side of the handle 1, making it easier to operate with the right hand.

[0029] Furthermore, the rotary drive device includes a micro motor 51, which is installed inside the handle 1. The output end of the micro motor 51 is fixedly connected to the driving bevel gear 53. The driving bevel gear 53 is located at one end of the connecting neck 3 near the working head 4. A driven bevel gear 54 is installed at the upper end of the working head 4. After the working head 4 is installed on the connecting neck 3, the driving bevel gear 53 and the driven bevel gear 54 mesh with each other.

[0030] Furthermore, the output end of the micro motor 51 is fixedly connected to the drive shaft 52, a bushing 56 is installed in the connecting neck 3, the drive shaft 52 passes through the bushing 56, and one end of the drive shaft 52 that passes through the bushing 56 is fixedly connected to the drive bevel gear 53.

[0031] Furthermore, the upper end of the working head 4 is fixedly connected to the driven bevel gear 54 via a driven shaft. A seated bearing 55 is mounted on the outside of the driven shaft. The upper end of the seated bearing 55 is fixedly connected to the end of the connecting neck 3, so that the working head 4 is connected to the connecting neck 3.

[0032] In this embodiment, the axis of the drive shaft 52 coincides with the axis of the handle 1. A curved portion is provided at the end of the connecting neck 2 away from the handle 1. Through the cooperation of the drive bevel gear 53 and the driven bevel gear 54, the rotation axis of the working head 4 forms a certain angle with the axis of the handle 1, making it easier for the working head 4 to enter the oral cavity. When the rotary drive device is working, the micro motor 51 is controlled to rotate by rotating the button 22, which drives the drive bevel gear 53 to rotate, thereby driving the driven bevel gear 54 to rotate, and thus causing the working head 4 to rotate around its own axis. The bushing 56 limits the movement of the drive shaft 52, preventing it from shaking during rotation. Furthermore, the drive shaft 52 and the bushing 56 experience rolling friction, reducing energy consumption and extending the service life of the root canal gutta-percha cleaning device. The seated bearing 56 serves both to connect the working head 4 to the connecting neck 3 and to allow the driven shaft to rotate.

[0033] Furthermore, the angle between the axis of the working head 4 and the axis of the handle 1 is an obtuse angle.

[0034] Furthermore, the heating device includes a power module and a heating wire 6 that are electrically connected to each other. The power module is installed inside the handle 1, and the heating wire 6 is disposed inside the working head 4.

[0035] In this embodiment, when the heating device is working, the power module is controlled to work by the heating button 21 so that the heating wire 6 in the working head 4 heats up, thereby heating the working head 4.

[0036] Furthermore, the gutta-percha interlocking structure consists of several protrusions evenly arranged on the outer surface of the working head 4.

[0037] Furthermore, the protrusion is in the shape of a wolf tooth or a four-sided pyramid with its tip curved upwards.

[0038] Furthermore, the gutta-percha interlocking structure is a spiral protrusion or groove covering the outer surface of the working head 4.

[0039] Furthermore, the power module is a storage battery or a button battery.

[0040] Alternatively, the power module may include a rechargeable battery, and the end of the handle 1 may be provided with a charging interface for charging the rechargeable battery.

[0041] It should be noted that the above detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0042] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments described in this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0044] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0045] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0046] In the detailed description above, reference has been made to the accompanying drawings, which form part of this document. In the drawings, similar symbols typically identify similar parts unless the context otherwise indicates otherwise. The illustrated embodiments described in the detailed specification, drawings, and claims are not intended to be limiting. Other embodiments may be used and other changes may be made without departing from the spirit or scope of the subject matter presented herein.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A root canal gutta-percha cleaning device, characterized in that: The device includes a handle (1), a connecting neck (3), a working head (4), a rotary drive device, and a heating device. The connecting neck (3) is disposed between the handle (1) and the working head (4) to connect the handle (1) and the working head (4). One end of the connecting neck (3) near the working head (4) has a curved portion so that the axis of the working head (4) forms a certain angle with the axis of the handle (1). The rotary drive device is disposed within the handle (1) and the connecting neck (3) to drive the working head (4) to rotate around its own axis. The heating device... A heating device is disposed in the handle (1), the connecting neck (3) and the working head (4) for heating the working head (4); the working head (4) is installed at the end of the connecting neck (3) away from the handle (1) and can rotate around its own axis; the outer surface of the working head (4) is provided with a gutta-percha fitting structure, which is used to embed into the gutta-percha in the root canal and combine with the gutta-percha to facilitate the removal of the gutta-percha from the root canal; a button (2) is provided on the handle (1), which is used to control the operation of the rotation drive device and the heating device.

2. The root canal gutta-percha cleaning device according to claim 1, characterized in that: The button (2) includes a heating button (21) and a rotary button (22). The heating button (21) is used to control the operation of the heating device, and the rotary button (22) is used to control the operation of the rotary drive device.

3. The root canal gutta-percha cleaning device according to claim 1, characterized in that: The button (2) is located on the front left side of the handle (1).

4. The root canal gutta-percha cleaning device according to claim 1, characterized in that: The rotary drive device includes a micro motor (51) installed inside the handle (1). The output end of the micro motor (51) is fixedly connected to the active bevel gear (53). The active bevel gear (53) is placed at one end of the connecting neck (3) near the working head (4). A driven bevel gear (54) is installed at the upper end of the working head (4). After the working head (4) is installed on the connecting neck (3), the active bevel gear (53) and the driven bevel gear (54) mesh with each other.

5. A gutta-percha cleaning device for root canals according to claim 4, characterized in that: The output end of the micro motor (51) is fixedly connected to the drive shaft (52). A bushing (56) is installed in the connecting neck (3). The drive shaft (52) passes through the bushing (56). One end of the drive shaft (52) that passes through the bushing (56) is fixedly connected to the drive bevel gear (53).

6. A root canal gutta-percha cleaning device according to claim 5, characterized in that: The upper end of the working head (4) is fixedly connected to the driven bevel gear (54) via a driven shaft. A seated bearing (55) is installed on the outside of the driven shaft. The upper end of the seated bearing (55) is fixedly connected to the end of the connecting neck (3) so that the working head (4) is connected to the connecting neck (3).

7. The root canal gutta-percha cleaning device according to claim 1, characterized in that: The heating device includes a power module and a heating wire (6) that are electrically connected to each other. The power module is installed in the handle (1), and the heating wire (6) is disposed in the working head (4).

8. The root canal gutta-percha cleaning device according to claim 1, characterized in that: The gutta-percha interlocking structure consists of several protrusions evenly arranged on the outer surface of the working head (4).

9. A gutta-percha cleaning device for root canals according to claim 8, characterized in that: The protrusions are in the shape of wolf teeth or square pyramids with their tips curving upwards.

10. A gutta-percha cleaning device for root canals according to claim 1, characterized in that: The gutta-percha interlocking structure is a spiral protrusion or groove covering the outer surface of the working head (4).

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