Device for root canal treatment and medical instrument thereof

Abstract

A device for root canal treatment, comprising a tube with a first taper configuration and a plurality of through holes on the tube wall. A brush is assembled in the tube, comprising bristles and a brush rod, and the bristles are attached to the brush rod at one end. A control member is used to control the shape of the brush, and the bristles attached to the brush rod are unfolded outside the tube wall, so that the brush has a second taper and is in contact with the inner wall of the root canal cavity established by the root canal file. The water generated by ultrasonic oscillation flows in the tube, and flows out from the through holes along the bristles and into the root canal prepared by the root canal file for filling. It has been verified that the device is easy to put into the root canal prepared by the root canal file, the tube wall tissue debris is used for flushing, the residual in the root canal is effectively avoided, the filling of the root canal is facilitated, the postoperative repeated infection is prevented, the recovery of the tooth function is accelerated, and the healthy oral environment is maintained.

Description

Technical Field

[0001] This utility model relates to a tool for assisting in surgical procedures, and more particularly to a tissue cleaning tool that meets the needs of pulp cavity cleaning, and the medical device thereof. Background Technology

[0002] Root canal therapy is a primary treatment method in dentistry for pulpitis and periapical periodontitis. Simply put, when the dental pulp (containing nerves, blood vessels, and other tissues) inside a tooth is infected or damaged due to cavities, trauma, or wear, root canal therapy is necessary to remove the infected tissue, kill bacteria, and fill the root canal with medication and filling materials. This protects the tooth, prevents pain or further deterioration, and facilitates the restoration of tooth function and oral health.

[0003] During treatment, specialized files and other instruments are needed to clean, shape, and disinfect the root canals, removing bacteria and contaminants from the canal walls and shaping them for easy filling. Various tissue debris or contaminants generated during this process are cleaned or irrigated using an ultrasonic squeegee. However, clinically used ultrasonic squeegees have a #02 taper, which is incompatible with the taper of root canal files. Furthermore, the volume and force of the water entering the root canal are relatively weak, making it difficult for the ultrasonically vibrating water flow to remove debris. This is especially true when the root canal is curved or heavily contaminated with a thick smear layer, where the squeegee's effect is insufficient to achieve the desired cleaning. Utility Model Content

[0004] One objective of this invention is to provide a device for root canal treatment that facilitates the removal of tissue debris, bacteria, and contaminants from the root canal walls during root canal treatment.

[0005] Another objective of this invention is to provide a medical device, which is assembled into an ultrasonic rinsing apparatus to perform root canal cleaning.

[0006] An instrument for root canal treatment, comprising:

[0007] A pipe fitting having a first taper structure and several through holes provided on the pipe wall;

[0008] A brush, which is assembled inside a pipe fitting, includes bristles and a brush handle, with one end of the bristles attached to the brush handle;

[0009] The control element controls the shape of the brush, spreading the bristles attached to the brush handle outside the tube wall, giving the brush a second taper, and making it contact the inner wall of the root canal cavity established by the root canal file.

[0010] After the brush is assembled with the pipe fitting, the brush bristles extend out of the pipe wall through the through hole, or retract into the pipe wall through the through hole.

[0011] Another type of device used for root canal treatment includes:

[0012] Pipe fittings, which have a tapered structure and several through holes in the pipe wall;

[0013] A brush, which is assembled inside a pipe fitting, includes bristles and a brush handle, with one end of the bristles attached to the brush handle;

[0014] The control component, including a control button and a stroke groove, controls the shape of the brush. One end of the control button is located inside the cavity of the stroke groove and connected to the brush rod, while the other end is located outside the groove opening. When force is applied, the control button moves along the groove opening shape, and the brush rod moves synchronously in a straight line inside the tube, causing the other end of the bristles to extend from the through hole to the outside of the tube wall or retract to the inside of the tube wall.

[0015] The taper of the tube is less than or equal to that of the root canal file. On the one hand, this makes it easier to insert into the root canal prepared by the root canal file. On the other hand, it helps the control element to maintain a shape that matches the taper of the root canal file after the bristles are unfolded, which is more conducive to cleaning tissue debris, as well as bacteria and contaminants on the root canal wall.

[0016] Another type of device used for root canal treatment has the same taper as a root canal file, such as #06.

[0017] Another type of device used for root canal treatment has a smaller taper than the root canal file, such as #04. When the control bristles are unfolded, it forms the same taper as the root canal file, such as #06.

[0018] Another device used for root canal treatment has a travel groove with a spiral coil at the opening. When the control button is applied, it moves gradually from the outer circle of the spiral coil towards the center, pushing the brush rod to move synchronously in a straight line towards the distal end inside the tube. This causes the other end of the brush bristles to extend from the through hole to the outside of the tube wall. When the control button stops at the center of the spiral coil, the brush rod reaches its maximum travel, and the brush bristles stop extending out of the tube wall.

[0019] Another device used for root canal treatment has a spiral groove. When the control button is applied, it moves gradually outward from the center of the spiral, pulling the brush rod to move in a straight line towards the proximal end inside the tube, so that the other end of the brush bristles is retracted from the outside of the tube wall to the inside of the tube wall.

[0020] Another type of device used in root canal treatment includes a stop, placed outside the canal wall to prevent the device from extending further into the root canal, thus improving safety. For example, a silicone ring can be used to stop the device outside the canal wall.

[0021] Water generated by ultrasonic vibration flows inside the tube and flows out through the through-hole along the bristles, entering the root canal that has been prepared by the root canal file for easy filling.

[0022] A specific embodiment of a brush used in the device of this utility model includes several bristle assemblies, each bristle assembly including two or more bristles, such as three or four bristles. Each bristle assembly is distributed along the axial direction of the brush handle, and only one bristle assembly is arranged radially on the brush handle.

[0023] Another specific embodiment of the brush used in the device of this utility model is made of nickel-titanium shape memory metal, with both the bristles and the brush handle made of nickel-titanium shape memory metal and integrally formed.

[0024] Verification has shown that the device of this invention is easy to insert into the root canal prepared by a root canal file, and the use of fine tissue debris from the tube wall for flushing effectively avoids residue in the root canal, facilitates filling of the root canal, prevents recurrent infection after surgery, accelerates the recovery of tooth function, and maintains a healthy oral environment.

[0025] The device of this invention can be used as a medical device and installed on existing ultrasonic rinsing equipment, making it convenient for medical personnel to use. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of an embodiment of the device of this utility model applied to a dental root canal;

[0027] Figure 2 This is a schematic diagram of another state in which the device of this utility model is applied to the root canal. Detailed Implementation

[0028] The technical solution of this utility model is described in detail below with reference to the accompanying drawings. The embodiments of this utility model are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of the utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

[0029] Figure 1 This is a schematic diagram showing an embodiment of the device of this utility model applied to a dental root canal. Figure 2 This is a schematic diagram illustrating another state of the device of this utility model applied to a dental root canal. For example... Figure 1 and Figure 2 As shown, a root canal file (not shown), with a taper of #06, has completed the modification of root canal 20, forming cavity 21 for filling.

[0030] The fitting 100 has a first taper (e.g., #04) structure, which is smaller than the taper of the root canal file, making it easy to insert into the root canal prepared by the root canal file. The lumen can hold water generated by ultrasonic vibration, and the water is discharged to the outside of the fitting 100 through several through holes (not shown) on the wall of the fitting 100, which irrigates the cavity 21, removes tissue debris, helps prevent recurrent postoperative infection, accelerates the recovery of tooth function, and maintains a healthy oral environment.

[0031] The control element controls the shape of the brush 300, unfolding the bristles 320 attached to the brush handle 310, so that the unfolded bristles 320 form a second taper, which is usually greater than or equal to the first taper. As a result, the outer edge of the device entering the cavity 21 contacts the inner wall of the cavity 21 established by the root canal file, scraping or brushing away the bacteria and contaminants 30 attached thereto.

[0032] In this embodiment, the brush 300 is assembled inside the pipe fitting 100, allowing the bristles 320 to extend out of the pipe wall through the through hole or retract into the pipe wall through the through hole. The control component includes a control button 210 and a travel groove 220. One end of the control button 210 is located inside the cavity of the travel groove 220 and connected to the brush rod 310, while the other end is located outside the groove opening 221 of the travel groove. When the control button 210 is subjected to force, for example, when an external force is applied to the end located outside the groove opening 221 of the travel groove, the control button 210 is pushed to move along the shape of the groove opening 221. Simultaneously, the brush rod 310 moves linearly within the pipe fitting cavity, causing one end of the bristles 320 to extend out of the pipe wall through the through hole provided in the pipe wall.

[0033] For example, when the control button 210 is applied, it moves gradually from the outer circle of the spiral coil towards the center along the spiral coil's travel groove 221. Simultaneously, it pushes the brush rod 310 to move synchronously along a straight line towards the distal end, causing one end of the bristles 320 to extend out of the tube wall through the through-hole. As the bristles outside the tube wall become longer, the taper of the device within the cavity 21 in this embodiment increases, forming a two-stage taper adjustment. After the bristles are extended, the portion of the device within the cavity 21 maintains a shape that matches the taper of the root canal file, making it easier to contact bacteria and contaminants 30 on the root canal wall for scraping or brushing, achieving the purpose of deep cleaning. When the control button 210 stops at the center of the spiral coil, the brush rod 310 reaches its maximum stroke, the bristles 320 stop extending out of the tube wall, and the extension range reaches its maximum, which is beneficial for situations where the taper of the cavity 21 is slightly off.

[0034] Driven by the force, the spiral groove 221 of the control button 210 moves gradually from the center of the spiral coil outwards, simultaneously pulling the brush rod 310 to move in a straight line towards the proximal end inside the tube. The bristles 320, which are spread out outside the tube wall, gradually retract into the tube wall. Water generated by ultrasonic vibration is discharged through the through hole to the outside of the tube wall, rinsing away the fine debris after scraping or brushing and expelling it from the cavity 21. At the same time, the second water outlet 400 of the instrument is located in the oral cavity, continuing to rinse to prevent fine debris from returning to the cavity 21.

[0035] A stop 500 is also installed outside the fitting 100, for example, a silicone ring is used to fit outside the wall of the fitting 100 to prevent the fitting from continuing to extend into the root canal and improve safety.

[0036] Several bristle assemblies are distributed along the axial direction of the brush handle, with only one bristle assembly arranged radially. Each bristle assembly consists of two or more bristles, such as three or four, arranged radially around the brush handle. For example, two bristles are arranged at 180°, three at 120°, or two at 90°. Each bristle typically consists of one or more individual bristles, or a bundle of bristles. The brush handle is made of nickel-titanium shape memory metal, or both the bristles and the brush handle are made of nickel-titanium shape memory metal and molded as a single piece.

[0037] The cleaning taper created by the tube and the extended bristles forms a secondary taper fit. The extended bristles then perfectly match the shape of the root canal shaped by the root canal file, further cleaning away bacteria and contaminants remaining on the canal walls. This makes the device easier to operate. On one hand, it improves the fit of the root canal shaped by the root canal file, increasing cleaning efficiency. On the other hand, it achieves deep cleaning of bacteria and contaminants from the canal walls, increasing the amount and area of ​​bacteria and contaminants removed, significantly reducing residue. This facilitates root canal filling, prevents postoperative recurrent infections, accelerates tooth function recovery, and maintains a healthy oral environment.

Claims

1. A device for root canal treatment, characterized in that, include: A pipe fitting having a first taper structure and several through holes provided on the pipe wall; A brush, which is assembled inside a pipe fitting, includes bristles and a brush handle, with one end of the bristles attached to the brush handle; The control element controls the shape of the brush, spreading the bristles attached to the brush handle outside the tube wall, giving the brush a second taper, and making it contact the inner wall of the root canal cavity established by the root canal file.

2. The device for root canal treatment according to claim 1, characterized in that The taper of the tube is less than or equal to the taper of the root canal file.

3. The device for root canal treatment according to claim 1, characterized in that... The control component includes a control button and a stroke groove. One end of the control button is located inside the cavity of the stroke groove and connected to the brush rod, while the other end is located outside the groove opening. When subjected to force, the control button moves along the groove opening shape, and the brush rod moves synchronously in a straight line inside the tube, causing the other end of the bristles to extend from the through hole to the outside of the tube wall or retract to the inside of the tube wall.

4. The device for root canal treatment according to claim 3, characterized in that... The groove opening of the stroke groove is formed into a spiral coil.

5. The device for root canal treatment according to claim 4, characterized in that... When the control button is subjected to force, it gradually moves towards the center along the outer ring of the spiral coil, pushing the brush rod to move synchronously along a straight line towards the far end inside the pipe, so that the other end of the brush bristles extends out of the through hole to the outside of the pipe wall. When the control button stops at the center of the spiral coil, the brush rod reaches its maximum stroke and the brush bristles stop extending out of the pipe wall.

6. The device for root canal treatment according to claim 4, characterized in that... When the control button is subjected to force, it gradually moves outward along the center of the spiral coil, pulling the brush rod to move synchronously in a straight line towards the near end inside the tube, so that the other end of the brush bristles is retracted from the outside of the tube wall to the inside of the tube wall.

7. The device for root canal treatment according to claim 1, characterized in that... It also includes a stop, which is placed outside the tube wall to prevent the tube from continuing to extend into the root canal.

8. The device for root canal treatment according to claim 1, characterized in that... The brush includes several bristle assemblies, each bristle assembly is distributed along the axial direction of the brush handle, and only one bristle assembly is arranged radially on the brush handle.

9. The device for root canal treatment according to claim 8, characterized in that... Each of the described brush components includes two or more brush bristles.

10. A medical device, characterized in that... Includes the device for root canal treatment as described in claim 1.

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