Multi-blade efficient medullary cavity file
The design of the multi-bladed medullary file solves the problem of low filing efficiency in existing technologies, achieving efficient removal of lesions in the root canal, and improving surgical efficiency and patient comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BAODING KANGNENG MACHINERY TECHNOLOGY CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-28
AI Technical Summary
In existing technologies, pulp canal files with a single blade or a small number of blades have low filing efficiency when dealing with complex root canals, making it difficult to quickly and completely remove diseased tissue within the root canal, prolonging the operation time and increasing patient discomfort, which may lead to root canal treatment failure.
A multi-bladed, high-efficiency pulp file is designed, employing a first-blade and a second-blade working in tandem to remove large pieces of pulp tissue and finely trim the inner pulp cavity wall. Simultaneously, the design incorporates a side retainer, a reinforcing rubber ring, and a connection port with a side through-hole to enhance connection stability and irrigation functionality.
It improves filing efficiency, ensures the smoothness and flatness of the medullary cavity wall, reduces operation time, enhances connection stability, and improves patient comfort through the irrigation function.
Smart Images

Figure CN224166422U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a multi-bladed, high-efficiency medullary cavity file. Background Technology
[0002] A pulp file is a medical device commonly used in the field of oral medicine, especially in the treatment of pulpitis and periapical periodontitis.
[0003] In existing technologies, pulp canal files with a single blade or a small number of blades have low filing efficiency when dealing with complex root canals, making it difficult to quickly and thoroughly remove diseased tissue within the root canal. This not only prolongs the operation time and increases patient discomfort, but may also lead to root canal treatment failure due to incomplete cleaning. Utility Model Content
[0004] The purpose of this invention is to solve the problem that existing pulp canal files with single blades or a small number of blades have low filing efficiency when dealing with complex root canals, making it difficult to quickly and thoroughly remove diseased tissue in the root canal. This not only prolongs the operation time and increases the patient's discomfort, but may also lead to root canal treatment failure due to incomplete cleaning. Therefore, a multi-bladed high-efficiency pulp canal file is proposed.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a multi-bladed high-efficiency medullary file, comprising a medullary file body, a first cutting edge and a second cutting edge on the outer surface of the medullary file body, a connecting rod fixedly connected to one side of the upper end of the medullary file body, a connecting port fixedly connected to the upper end of the medullary file body, and a central hole opened inside the connecting rod.
[0006] Preferably, a side clamping plate is fixedly connected to the outer surface of the connecting rod, and a limiting clamping cavity is opened in the middle of the side clamping plate.
[0007] Preferably, a reinforcing rubber ring is fixedly connected inside the defined cavity, and the two sides of the reinforcing rubber ring are arc-shaped.
[0008] Preferably, the medullary canal file body has a hollow channel inside, which is connected to the connection port.
[0009] Preferably, a side through hole is provided in the lower middle part of the hollow channel, and the side through hole is located below the second cutting edge.
[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0011] In this invention, the design of a first and a second cutting edge allows for the removal of larger pieces of pulp tissue and decay by the larger cutting edge of the first edge, while the second edge refines the inner pulp cavity wall. The two cutting edges work together to improve overall filing efficiency and ensure the smoothness and flatness of the pulp cavity wall, facilitating subsequent treatment procedures. The side retainer and central hole increase the connection area, thereby enhancing connection stability. The reinforcing rubber ring allows for compression of the insertion rod during fixation, further increasing connection stability. The connection port and side through-hole allow for the connection of a water supply device, with water flowing out through the side through-hole for rinsing the surgical area, making it convenient to use. Attached Figure Description
[0012] Figure 1 A three-dimensional structural diagram of a multi-bladed, high-efficiency medullary canal file is provided for this utility model;
[0013] Figure 2 This invention proposes a multi-bladed, high-efficiency medullary canal file. Figure 1 Enlarged structural diagram of region A in the middle;
[0014] Figure 3 This invention provides a schematic diagram of the internal structure of a multi-bladed, high-efficiency medullary canal file.
[0015] Figure 4 This invention proposes a multi-bladed, high-efficiency medullary canal file. Figure 3 A magnified structural diagram of region B in the middle.
[0016] Legend: 1. Medullary canal file body; 2. Connecting rod; 3. Central hole; 4. Connecting port; 5. Side clamping plate; 6. Limiting clamping cavity; 7. Reinforcing rubber ring; 8. Side through hole; 9. Hollow channel; 10. First cutting edge; 11. Second cutting edge. Detailed Implementation
[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0019] Example: Figures 1-4As shown, this utility model provides a multi-bladed high-efficiency medullary file, including a medullary file body 1. The outer surface of the medullary file body 1 has a first cutting edge 10 and a second cutting edge 11. A connecting rod 2 is fixedly connected to one side of the upper end of the medullary file body 1. A connecting port 4 is fixedly connected to the upper end of the medullary file body 1. A side retaining plate 5 is fixedly connected to the outer surface of the connecting rod 2. A limiting retaining cavity 6 is opened in the middle of the side retaining plate 5. A reinforcing rubber ring 7 is fixedly connected inside the limiting retaining cavity 6. The two sides of the reinforcing rubber ring 7 are arc-shaped. A hollow channel 9 is opened inside the medullary file body 1. The hollow channel 9 communicates with the connecting port 4. A side through hole 8 is opened below the middle of the hollow channel 9. The side through hole 8 is located below the second cutting edge 11. A central hole 3 is opened inside the connecting rod 2.
[0020] The specific settings and functions of this embodiment are described in detail below. With the first cutting edge 10 and the second cutting edge 11, during use, the larger cutting edge of the first cutting edge 10 removes larger pieces of pulp tissue and decay, while the second cutting edge 11 refines the inner pulp cavity wall. The two cutting edges work together, improving overall filing efficiency and ensuring the smoothness and flatness of the pulp cavity wall, which is beneficial for subsequent treatment operations. The side retaining plate 5 and the central hole 3 increase the connection area, thereby increasing connection stability. The reinforcing rubber ring 7 allows for compression of the insertion rod during fixation, further increasing connection stability. The connection port 4 and the side through hole 8 allow for connection to a water supply device during use, with water flowing out through the side through hole 8 for rinsing the surgical area, making it convenient to use.
[0021] The method of use and working principle of this device: Connect the connecting rod 2 to the connecting equipment, connect the water supply equipment through the connecting port 4, insert the insertion tube into the limiting cavity 6, and further fix the connecting rod 2. Once the installation is complete, it can be used.
[0022] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.
Claims
1. A multi-bladed, high-efficiency medullary canal file, comprising a medullary canal file body (1), characterized in that: The outer surface of the medullary file body (1) has a first cutting edge (10) and a second cutting edge (11). A connecting rod (2) is fixedly connected to one side of the upper end of the medullary file body (1). A connecting port (4) is fixedly connected to the upper end of the medullary file body (1). A central hole (3) is opened inside the connecting rod (2).
2. The multi-bladed high-efficiency medullary canal file according to claim 1, characterized in that: A side clamping plate (5) is fixedly connected to the outer surface of the connecting rod (2), and a limiting clamping cavity (6) is opened in the middle of the side clamping plate (5).
3. The multi-bladed, high-efficiency medullary canal file according to claim 2, characterized in that: The internal fixed connection of the limiting cavity (6) is a reinforcing rubber ring (7), and the two sides of the reinforcing rubber ring (7) are arc-shaped.
4. The multi-bladed, high-efficiency medullary canal file according to claim 1, characterized in that: The body (1) of the medullary canal has a hollow channel (9) inside, which is connected to the connection port (4).
5. The multi-bladed, high-efficiency medullary canal file according to claim 4, characterized in that: A side through hole (8) is provided in the lower middle part of the hollow channel (9), and the side through hole (8) is located below the second cutting edge (11).