Flat bone drill and alveolar bone trimming device

Abstract

The utility model discloses a flat bone drill and alveolar bone trimming device, including drill bit, on the drill bit is formed cutting edge and the chip pocket that corresponds to cutting edge, the cutting edge has the first relief angle that ensures the cutting sharpness and the second relief angle that reduces the cutting resistance, and the first relief angle and the second relief angle adjoin each other. The first rear angle of the cutting edge of the flat bone drill is used for guaranteeing cutting sharpness, mainly plays a cutting role and can improve cutting efficiency, and the second rear angle is used for reducing cutting resistance and facilitating chip removal, so that heat production is reduced, heat production can be reduced on the premise that the cutting role is guaranteed, and the service life of the flat bone drill is prolonged. Therefore, the problem of osteoblast necrosis caused by overheat of the alveolar bone in the cutting process can be improved.

Description

Technical Field

[0001] This utility model relates to the field of dental drill technology, specifically to a flat bone drill and alveolar bone trimming device. Background Technology

[0002] Because the shape of the alveolar bone varies from person to person, and the location of dental implants differs, the alveolar bone also varies considerably, sometimes exhibiting irregular growth. A mismatch between the surface shape of the alveolar bone surrounding the implant and the healing abutment is common, leading to unstable bonding or failure to position the abutment properly. Therefore, alveolar bone reshaping is necessary during the implantation process. Studies have shown that if bone tissue is treated at 47°C for 1 minute during implantation, bone cell necrosis can occur, and if treated at 60°C for 1 minute, irreversible bone cell necrosis may result. Therefore, special attention must be paid to the processing temperature during implantation, especially during alveolar bone reshaping. However, current flat bone drills, due to poor cutting edge design, generate excessive heat when reshaping alveolar bone, often causing excessively high alveolar bone temperatures, posing a risk of bone cell necrosis. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a flat bone drill, which mainly solves the technical problem of excessive heat generation during the use of existing flat bone drills.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A flat drill includes a drill bit with a cutting edge and a corresponding chip groove formed on the drill bit. The cutting edge has a first clearance angle to ensure cutting sharpness and a second clearance angle to reduce cutting resistance, and the first clearance angle and the second clearance angle are adjacent to each other.

[0006] Furthermore, the drill bit is equipped with a positioning pin for positioning.

[0007] Furthermore, a protective platform for protecting the implant is formed at the end face of the drill bit.

[0008] Furthermore, the positioning post is located at the center of the protection platform.

[0009] Furthermore, the positioning post includes a cylindrical head for rapid guidance and a tapered base that mates with the conical surface of the implant's inner bore.

[0010] Furthermore, the drill bit has four cutting edges and four chip grooves corresponding to each cutting edge.

[0011] Furthermore, it also includes a quick-release lever that is fixedly connected to the drill bit for detachable engagement with a dental implant handpiece.

[0012] Furthermore, the positioning pin, drill bit, and quick-release rod are arranged coaxially.

[0013] Based on the same inventive concept, this utility model also provides an alveolar bone trimming device, including a dental implant handpiece and any of the above-described flat bone drills.

[0014] The above technical solution has the following advantages or beneficial effects:

[0015] In the flat bone drill and alveolar bone trimming device of this utility model, the first clearance angle of the cutting edge is used to ensure the sharpness of the cutting and mainly plays the cutting role, which can improve the cutting efficiency. The second clearance angle is used to reduce the cutting resistance and facilitate chip removal, thereby reducing heat generation. In this way, heat generation can be reduced while ensuring the cutting effect, which is conducive to improving the problem of alveolar bone overheating and bone cell necrosis caused by the cutting process. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the flat bone drill according to an embodiment of the present invention.

[0017] Figure 2 This is a front view of the flat bone drill according to an embodiment of the present invention.

[0018] Figure 3 This is a top view of the flat bone drill according to an embodiment of the present invention.

[0019] Label Explanation:

[0020] 1. Drill bit, 2. Cutting edge, 3. Chip groove, 4. Locating pin, 5. Protective platform, 6. Quick-release rod, 21. First clearance angle, 22. Second clearance angle, 41. Cylindrical head, 42. Conical base. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0023] Please refer to the appendix. Figure 1 To be continued Figure 3One embodiment of this utility model provides a flat bone drill, including a drill bit 1. The drill bit 1 has a cutting edge 2 and a corresponding chip groove 3 formed on the cutting edge 2. The cutting edge 2 has a first clearance angle 21 for ensuring cutting sharpness and a second clearance angle 22 for reducing cutting resistance, and the first clearance angle 21 and the second clearance angle 22 are adjacent to each other. It can be understood that in this embodiment, the first clearance angle 21 of the cutting edge 2 is used to ensure cutting sharpness, mainly playing a cutting role and improving cutting efficiency, while the second clearance angle 22 is used to reduce cutting resistance, facilitating chip removal and thus reducing heat generation. In this way, heat generation can be reduced while ensuring the cutting effect, which is beneficial to improving the problem of alveolar bone overheating and bone cell necrosis caused during the cutting process.

[0024] Please refer to the appendix. Figure 1 To be continued Figure 3 In one preferred embodiment, a protective platform 5 for protecting the implant is formed at the end face of the drill bit 1. The protective platform 5 protects the top structure of the implant from the impact of the drill bit 1 and prevents the implant from being scratched by the drill bit 1.

[0025] Please refer to the appendix. Figure 1 To be continued Figure 3 In one preferred embodiment, the drill bit 1 is provided with a positioning post 4 for positioning, and the positioning post 4 is located at the center of the protective platform 5. Preferably, the positioning post 4 includes a cylindrical head 41 for quick guidance and a conical base 42 that mates with the conical surface of the implant's inner hole. In this embodiment, the cylindrical head 41 of the positioning post 4 is used for guiding the engagement with the inner hole of the implant, making it easier for the positioning post 4 to be inserted into the inner hole of the implant. At the same time, the conical base 42 is used for stable engagement with the conical surface of the implant's inner hole, making the positioning engagement between the drill bit 1 and the implant more precise and stable, less prone to deviation, and greatly improving cutting efficiency and bone smoothness quality.

[0026] Please refer to the appendix. Figure 1 To be continued Figure 3 In one preferred embodiment, four cutting edges 2 and four chip grooves 3 corresponding to each cutting edge 2 are evenly distributed on the drill bit 1. However, those skilled in the art should understand that in other embodiments, other numbers of cutting edges 2 and corresponding chip grooves 3 may be arranged on the drill bit 1, and it is not limited to the specific implementation disclosed in this embodiment. Those skilled in the art can make specific settings according to specific needs.

[0027] Please refer to the appendix. Figure 1 To be continued Figure 3 In one preferred embodiment, a quick-release lever 6 is fixedly connected to the drill bit 1 for detachable engagement with a dental implant handpiece, thereby enabling the drill bit 1 to be quickly attached to and detached from the dental implant handpiece.

[0028] Please refer to the appendix. Figure 1 To be continued Figure 3 In one preferred embodiment, the positioning post 4, the drill bit 1, and the quick-release rod 6 are arranged coaxially.

[0029] Please refer to the appendix. Figure 1 To be continued Figure 3 An embodiment of this utility model also provides an alveolar bone trimming device, including a dental implant handpiece and any of the above-described flat bone drills.

[0030] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model. Therefore, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A flat bone drill comprising a drill head (1) having a cutting edge (2) and a chip pocket (3) corresponding to the cutting edge (2) formed thereon, characterized in that: The cutting edge (2) has a first clearance angle (21) for ensuring cutting sharpness and a second clearance angle (22) for reducing cutting resistance, and the first clearance angle (21) and the second clearance angle (22) are adjacent to each other.

2. The flat bone drill according to claim 1, characterized in that: The drill (1) is provided with a positioning column (4) for positioning.

3. The flat bone drill according to claim 2, characterized in that: The drill (1) is provided with a protection platform (5) for protecting the implant at the end surface.

4. The flat bone drill according to claim 3, characterized in that: The positioning column (4) is arranged at the center of the protection platform (5).

5. The flat bone drill according to claim 2, wherein: The positioning column (4) comprises a cylindrical head (41) for quick guiding and a tapered base (42) matched with the inner hole tapered surface of the implant.

6. The flat bone drill according to claim 1, wherein: The drill (1) is uniformly provided with four cutting edges (2) and four chip grooves (3) corresponding to the cutting edges (2) respectively.

7. A flat bone drill according to any one of claims 2 to 6, characterized in that: The drill (1) is further provided with a quick mounting rod (6) fixedly connected with the drill (1) for detachable cooperation with the dental implant handpiece.

8. The flat bone drill according to claim 7, characterized in that: The positioning column (4), the drill (1) and the quick mounting rod (6) are coaxially arranged.

9. An alveolar bone trimming device, characterized by: The dental implant handpiece and the flat bone drill according to any one of claims 1 to 8 are included.

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