Root canal irrigator for dental clinic

Abstract

The utility model discloses a root canal swabbing device for stomatological department relates to dental medical instrument technical field, aims at solving the technical problem of current cleaning effect is insufficient, and impurity is inconvenient to discharge, including swabbing device body, and the swabbing device body includes the swabbing head of mounting shaft and mounting shaft excess mounting, the swabbing head includes the connector of mounting shaft connection and the working tip of connector setting, is provided with the flow through cavity in the working tip, the outer surface of working tip is provided with helical groove, and the helical groove forms the continuous helical tab with the inner wall of flow through cavity, and the outer surface of working tip avoids helical groove and is provided with the flow hole of communicating with flow through cavity. The utility model has the advantages that the working tip helical groove cooperates with the helical path hemisphere convex, and the helical vortex shear force and physical friction are used, the root canal wall cleanliness is improved, the bacterial residue is reduced, the helical tab forms the directional liquid flow, and the impurity is discharged through the flow hole and flow through cavity, avoiding the deposition in the narrow place.

Description

Technical Field

[0001] This utility model relates to the field of dental medical device technology, and more specifically, to a root canal irrigator for dental use. Background Technology

[0002] In clinical dental treatment, root canal treatment is the core method for treating pulpitis and periapical periodontitis. Root canal irrigation, as a key step in root canal treatment, aims to remove necrotic pulp tissue, bacteria and their metabolic products, dentin debris and other contaminants from the root canal, as well as remove the smear layer on the root canal wall, creating a clean and sterile environment for subsequent root canal filling, which directly affects the success rate of root canal treatment.

[0003] Currently, rotary root canal sizing devices generate intense eddies and turbulence in the root canal through rotation, using the shearing and impact forces of the liquid to remove contaminants. However, the sizing heads are primarily truncated cones, making it easy for impurities to accumulate in narrow areas such as the root apex and lateral canal openings, hindering their removal with the rinsing fluid. Therefore, we propose a new root canal sizing device for dental use. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a dental root canal irrigator to solve the current technical problems of insufficient cleaning effect and inconvenience in removing impurities.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a root canal irrigator for dental use, comprising an irrigator body, the irrigator body comprising a mounting shaft and an irrigator head interference-fitted onto the mounting shaft, the mounting shaft comprising an inner shaft and a sleeve shaft integrally formed on the outer surface of the inner shaft, the irrigator head comprising a connector connected to the mounting shaft and a working tip disposed on the connector head, the working tip having a gradually decreasing diameter along its long axis, a flow cavity disposed within the working tip, a spiral groove disposed on the outer surface of the working tip, the spiral groove forming a continuous spiral protrusion on the inner wall of the flow cavity, a flow hole communicating with the flow cavity being opened on the outer surface of the working tip avoiding the spiral groove, and a hemispherical protrusion disposed on the outer surface of the working tip.

[0006] Preferably, an installation cavity is formed between the inner shaft and the sleeve shaft, and an array of arc-shaped recesses are provided on the outer surface of the inner shaft.

[0007] Preferably, the connector is inserted into the mounting cavity, and the inner wall and outer surface of the connector are fixed to the inner wall of the mounting cavity by friction. The inner wall of the connector is provided with an array of semi-cylindrical protrusions, which are located in an arc-shaped recess.

[0008] Preferably, the outer surface of the connector has through holes arrayed at positions corresponding to the semi-cylindrical protrusions, and an extrusion member is disposed within the through holes.

[0009] Preferably, the extruder is made of rubber, the front end of the extruder is hemispherical, the end of the extruder is adapted to the shape of the semi-cylindrical protrusion, the front end of the extruder is pressed against the inner wall of the sleeve shaft, and the tail end of the extruder is pressed against the outer surface of the inner shaft.

[0010] Preferably, the hemispherical protrusion is arranged in a spiral path along the long axis of the working tip, and the hemispherical protrusion avoids the spiral groove and the flow hole.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through the design of the working tip structure, utilizes the spiral grooves on the outer surface of the working tip to drive the rinsing fluid into a spiral vortex when rotating at high speed. This vortex, aided by the shear force of the liquid, removes contaminants adhering to the root canal wall. Simultaneously, the hemispherical protrusions arranged along the long axis of the working tip in a spiral path not only directly scrape away stubborn smears and dentin debris through physical friction but also further agitate the rinsing fluid, generating a stronger turbulence effect. This dual action significantly improves cleaning efficiency and reduces bacterial and metabolic product residues. Furthermore, the continuous spiral protrusions formed by the spiral grooves inside the working tip generate a liquid driving force "towards the coarse end of the working tip" during rotation, forming a directional liquid flow. This design allows the rinsing fluid to carry impurities into the flow chamber from the flow hole at the fine end of the working tip (near the root apex) and then out of the root canal from the flow hole at the coarse end, ensuring timely removal of contaminants, maintaining a clean environment within the root canal, and solving the current problems of insufficient cleaning effect and difficulty in removing impurities.

[0012] 2. This utility model also features a structural design where the inner shaft and sleeve shaft of the mounting shaft enclose a mounting cavity. After the connector is inserted into the mounting cavity, it is initially fixed by the friction between the inner / outer surface of the connector and the inner wall of the mounting cavity. Simultaneously, the semi-cylindrical protrusion on the inner wall of the connector is embedded in the arc-shaped recess on the outer surface of the inner shaft, restricting circumferential rotation and preventing slippage of the rinsing head during rotation. The rubber extrusion component, through elastic deformation, extrudes the inner wall of the sleeve shaft at its front end and the outer surface of the inner shaft at its tail end, further filling the assembly gap. This triple fixing structure ensures that the rinsing head remains stable and does not fall off during high-speed rotation, guaranteeing clinical operation safety. Compared to traditional threaded connections and direct plug-in connections, this utility model's "plug-in + elastic extrusion" connection method allows for the replacement of the rinsing head without rotation or twisting. Medical staff can quickly switch between different specifications of working tips to adapt to different root canal diameters, reducing operation steps and time costs. It is especially suitable for efficient switching in multi-root canal treatment scenarios in clinical practice. Attached Figure Description

[0013] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a schematic diagram of the connector and mounting shaft of this utility model; Figure 3 This is a cross-sectional view of the connector and mounting shaft of this utility model; Figure 4 This is a partial front view schematic diagram of the shampoo head structure of this utility model; Figure 5 This is a partial cross-sectional view of the shampoo head of this utility model.

[0014] The following are the labels in the diagram: 101, Washer body; 102, Mounting shaft; 1021, Sleeve shaft; 1022, Inner shaft; 1023, Arc-shaped recess; 1024, Mounting cavity; 200, Washing head; 201, Connector; 202, Through hole; 203, Extrusion part; 204, Semi-cylindrical protrusion; 205, Working tip; 2051, Spiral groove; 2052, Hemispherical protrusion; 2053, Flow hole; 2054, Spiral convex plate; 2055, Flow cavity. Detailed Implementation

[0015] like Figures 1 to 5As shown, this utility model relates to a dental root canal irrigator, including an irrigator body 101. The irrigator body 101 includes a mounting shaft 102 and an irrigator head 200 interference-fitted onto the mounting shaft 102. The mounting shaft 102 includes an inner shaft 1022 and a sleeve shaft 1021 integrally formed on the outer surface of the inner shaft 1022. The irrigator head 200 includes a connector 201 connected to the mounting shaft 102 and a working tip 205 provided on the connector 201. The diameter of the working tip 205 gradually decreases along its long axis. A flow cavity 2055 is provided inside the working tip 205. A spiral groove 2051 is provided on the outer surface of the working tip 205. The spiral groove 2051 forms a continuous spiral protrusion 2054 on the inner wall of the flow cavity 2055. A flow hole 2053 communicating with the flow cavity 2055 is opened on the outer surface of the working tip 205, avoiding the spiral groove 2051. A hemispherical protrusion 2052 is also provided on the outer surface of the working tip 205. The working tip 205, with its diameter gradually decreasing along its long axis, adapts to the physiological structure of the root canal, which gradually narrows from the opening to the apex. This ensures that the working tip 205 can penetrate deep into the root canal and maintain proper contact with the canal wall during rinsing. As the working tip 205 rotates at high speed, the spiral groove 2051 can generate a spiral vortex in the rinsing fluid, which is beneficial for cleaning the root canal. The hemispherical protrusion 2052 can not only scrape away stubborn impurities attached to the root canal wall through physical friction, but also generate a greater degree of vortex and turbulence in the rinsing fluid, further improving the cleaning effect. Secondly, the spiral protrusion 2054 formed by the spiral groove 2051 can drive the liquid to flow towards the coarse end of the working tip 205 when the working tip 205 rotates. This allows the impurities washed down to enter the flow chamber 2055 through the flow hole 2053 at the fine end of the working tip 205, and then be discharged from the flow hole 2053 at the coarse end of the working tip 205. This effectively removes the impurities washed down from inside the root canal and ensures the rinsing effect of the root canal.

[0016] This invention utilizes the spiral groove 2051 of the working tip 205 and the hemispherical protrusion 2052 of the spiral path to improve the cleanliness of the root canal wall and reduce bacterial residue through the spiral vortex shear force and physical friction. The spiral protrusion 2054 forms a directional fluid flow, which helps impurities to be discharged through the flow hole 2053 and the flow cavity 2055, avoiding deposition in narrow areas. Furthermore, the "plug-in + elastic compression" connection method makes the rinsing head 200 easy to assemble and disassemble, adaptable to different root canals, and ensures safe and efficient operation.

[0017] Specifically, an installation cavity 1024 is formed between the inner shaft 1022 and the sleeve shaft 1021, and an array of arc-shaped recesses 1023 are provided on the outer surface of the inner shaft 1022. The installation cavity 1024 provides a space for accommodating the connector 201 and the installation shaft 102, ensuring coaxiality when the two are connected, and avoiding rotational imbalance of the washing head 200 due to installation misalignment. The arc-shaped recesses 1023 on the outer surface of the inner shaft 1022 and the semi-cylindrical protrusions 204 on the inner wall of the connector 201 form a matching structure, which can restrict the circumferential rotation of the connector 201 in the installation cavity 1024, and ensure that the rotational power of the installation shaft 102 can be stably transmitted to the washing head 200.

[0018] Furthermore, the connector 201 is inserted into the mounting cavity 1024. The inner wall and outer surface of the connector 201 are fixed to the inner wall of the mounting cavity 1024 by friction. The inner wall of the connector 201 is provided with an array of semi-cylindrical protrusions 204, which are located within the arc-shaped recess 1023. The plug-in connection method facilitates medical staff to quickly change different sizes of irrigating heads 200 to meet the treatment needs of different root canal diameters. The frictional fixation between the connector 201 and the inner wall of the mounting cavity 1024 can initially achieve axial fixation between the two, preventing the irrigating head 200 from falling off during use. The design of the semi-cylindrical protrusions 204 embedded in the arc-shaped recess 1023 further enhances the circumferential fixation effect, preventing the irrigating head 200 from slipping. Compared with the existing threaded connection method, it is more convenient to disassemble and assemble, and compared with the existing direct plug-in connection method, the connection is more secure.

[0019] It is worth noting that through holes 202 are arrayed on the outer surface of the connector 201 corresponding to the positions of the semi-cylindrical protrusions 204, and extrusion members 203 are disposed within the through holes 202. The position of the through holes 202 corresponds to the semi-cylindrical protrusions 204, which ensures that the extrusion members 203 can accurately act on the contact area between the semi-cylindrical protrusions 204 and the inner shaft 1022 and the sleeve shaft 1021. The extrusion members 203 can generate extrusion force through their own elastic deformation, enhance the fit between the connector 201 and the inner wall of the mounting cavity 1024, compensate for the gap caused by wear after long-term use, and maintain the firmness of the connection.

[0020] It is worth mentioning that the extrusion component 203 is made of rubber. The front end of the extrusion component 203 is hemispherical, and the end of the extrusion component 203 is adapted to the shape of the semi-cylindrical protrusion 204. The front end of the extrusion component 203 presses against the inner wall of the sleeve shaft 1021, and the tail end of the extrusion component 203 presses against the outer surface of the inner shaft 1022. The rubber extrusion component 203 has good elasticity and biocompatibility, which will not cause rigid wear to the mounting shaft 102 or the connector 201, and can continuously provide stable elasticity under extrusion. The hemispherical design at the front end can reduce the frictional resistance between the extrusion component 203 and the inner wall of the sleeve shaft 1021, avoiding jamming during installation or disassembly.

[0021] It is worth noting that the hemispherical protrusion 2052 is arranged in a spiral path along the long axis of the working tip 205, avoiding the spiral groove 2051 and the flow hole 2053. This spiral path arrangement allows the hemispherical protrusion 2052 to form a spiral friction trajectory when the working tip 205 rotates, covering more area of ​​the root canal wall and effectively scraping away smears and dentin debris. The design of avoiding the spiral groove 2051 and the flow hole 2053 prevents the hemispherical protrusion 2052 from obstructing these structures, facilitating the removal of impurities and preventing their deposition within the root canal.

[0022] Working Principle: This embodiment provides a dental root canal irrigator. In use, the connector 201 of the irrigator head 200 is aligned with the mounting cavity 1024 of the mounting shaft 102 (formed by the inner shaft 1022 and the sleeve shaft 1021) and inserted. During insertion, ensure that the semi-cylindrical protrusions 204 arrayed on the inner wall of the connector head 201 are precisely embedded in the arc-shaped recesses 1023 on the outer surface of the inner shaft 1022. At this time, the inner wall of the connector head 201 and the outer surface of the inner shaft 1022, and the outer surface of the connector head 201 and the inner surface of the sleeve shaft 1021 are initially fixed by friction. Simultaneously, the rubber extrusion member 203 inside the through hole 202 on the outer surface of the connector head 201 is compressed during insertion. The hemispherical front end of the irrigator 200 tightly presses against the inner wall of the sleeve shaft 1021, while the tail end adheres to and presses against the outer surface of the inner shaft 1022 with the semi-cylindrical protrusion 204. This further strengthens the fit between the connector 201 and the mounting cavity 1024, preventing the irrigator head 200 from slipping or falling off during high-speed rotation. This completes the assembly of the irrigator head 200 and the mounting shaft 102. Then, the medical staff operates the irrigator body 101 to perform the operation. The drive device inside the irrigator body 101 drives the mounting shaft 102 to rotate the irrigator head 200 at high speed. Subsequently, the working tip 205 (whose diameter gradually decreases along the long axis to adapt to the physiological structure of the root canal that gradually narrows from the opening to the apex) is slowly inserted into the root canal. During the high-speed rotation of the working tip 205, the spiral grooves 2051 on its outer surface drive the rinsing fluid in the root canal to form a spiral vortex. Simultaneously, the hemispherical protrusions 2052 (avoiding the spiral grooves 2051 and flow holes 2053 to prevent obstruction) arranged along the long axis of the working tip 205 in a spiral path, on the one hand, scrape away stubborn smears, dentin debris, and other impurities adhering to the root canal wall through physical friction; on the other hand, they further agitate the rinsing fluid, enhancing the intensity of the vortex and turbulence, improving the cleaning effect on the inner wall of the root canal and narrow areas such as the openings of lateral root canals. At the same time, the continuous spiral protrusions 2054 formed by the spiral grooves 2051 inside the working tip 205 generate a directional... The liquid driving force at the coarse end of the working tip 205 causes the rinsing fluid carrying impurities to pass through the flow hole 2053 opened in the spiral groove 2051 on the outer surface of the working tip 205 and enter the flow chamber 2055 inside the working tip 205. Then, it is discharged from the flow hole 2053 near the coarse end of the working tip 205 to the outside of the root canal. This effectively prevents impurities from depositing at the root apex or the opening of the lateral root canal, and maintains a clean environment inside the root canal. After rinsing is completed, turn off the driving device and remove the working tip 205 from the root canal. If it is necessary to replace the root canal or adjust the size of the rinsing head 200, the old rinsing head 200 can be pulled out directly, and the above assembly steps can be repeated to replace the new and compatible rinsing head 200.

[0023] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A dental root canal irrigator, characterized in that, The device includes a washer body (101), which includes a mounting shaft (102) and an interference-fitted washer head (200) on the mounting shaft (102). The mounting shaft (102) includes an inner shaft (1022) and a sleeve shaft (1021) integrally formed on the outer surface of the inner shaft (1022). The washer head (200) includes a connector (201) connected to the mounting shaft (102) and a working tip (205) provided on the connector (201). The diameter of the working tip (205) along its long axis is... To gradually reduce the size of the device, a flow cavity (2055) is provided inside the working tip (205), and a spiral groove (2051) is provided on the outer surface of the working tip (205). The spiral groove (2051) forms a continuous spiral protrusion (2054) on the inner wall of the flow cavity (2055). A flow hole (2053) communicating with the flow cavity (2055) is opened on the outer surface of the working tip (205) away from the spiral groove (2051). A hemispherical protrusion (2052) is also provided on the outer surface of the working tip (205).

2. The dental root canal irrigator according to claim 1, characterized in that, An installation cavity (1024) is formed between the inner shaft (1022) and the sleeve shaft (1021), and an arc-shaped recess (1023) is arranged on the outer surface of the inner shaft (1022).

3. A dental root canal irrigator according to claim 2, characterized in that, The connector (201) is inserted into the mounting cavity (1024). The inner wall and outer surface of the connector (201) are fixed to the inner wall of the mounting cavity (1024) by friction. The inner wall of the connector (201) is provided with an array of semi-cylindrical protrusions (204), which are located in the arc-shaped recess (1023).

4. A dental root canal irrigator according to claim 3, characterized in that, The outer surface of the connector (201) is provided with through holes (202) at positions corresponding to the semi-cylindrical protrusions (204), and an extrusion member (203) is provided in the through holes (202).

5. A dental root canal irrigator according to claim 4, characterized in that, The extrusion member (203) is made of rubber. The front end of the extrusion member (203) is hemispherical. The end of the extrusion member (203) is adapted to the shape of the semi-cylindrical protrusion (204). The front end of the extrusion member (203) is pressed against the inner wall of the sleeve shaft (1021), and the tail end of the extrusion member (203) is pressed against the outer surface of the inner shaft (1022).

6. A dental root canal irrigator according to claim 5, characterized in that, The hemispherical protrusion (2052) is arranged in a spiral path along the long axis of the working tip (205), and the hemispherical protrusion (2052) avoids the spiral groove (2051) and the flow hole (2053).

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