Tooth fracture micro-implant extraction tool

Abstract

The utility model discloses a tooth fracture micro-implant extraction tool which comprises an operation board, a connecting handle is arranged at the bottom of the operation board, a nail pulling barrel is arranged at the bottom of the connecting handle, a cavity of a conical structure is formed in the nail pulling barrel, reverse threads matched with a fracture metal screw are formed in the inner wall of the cavity, and the reverse threads are matched with the fracture metal screw. And cutting teeth which are distributed at equal intervals are arranged at the bottom of the circumference of the nail pulling barrel. The tool for taking out the broken tooth micro-implant is composed of an operation board, a connecting handle and a nail pulling barrel, reverse threads matched with a broken metal screw are arranged on the inner wall of the nail pulling barrel, cutting teeth used for cutting an alveolar bone are arranged at the bottom of the nail pulling barrel, the reverse threads and the broken metal screw are locked, and the cutting teeth are connected with the broken metal screw. And the broken metal screw broken in the alveolar bone can be clamped, so that the broken metal screw can be conveniently taken out.

Description

Technical Field

[0001] This utility model relates to the field of dental treatment technology, and in particular to a tool for removing micro-implants from broken teeth. Background Technology

[0002] Miniature implants are increasingly being used in orthodontic techniques, and the technology is becoming more and more mature. However, due to the large differences in bone density at different locations of the alveolar bone and the different materials used in miniature implants, miniature implants are prone to breakage when the doctor applies excessive torque during implantation.

[0003] With the increasing use of micro-implants, micro-implant fracture has become a challenging clinical problem. Most implant fractures are flush with the bone surface, and the fractured part is often located under the bone, making removal difficult.

[0004] Therefore, a tool is needed to remove broken micro-implants from teeth. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a tool for removing micro-implants from fractured teeth.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A tool for removing micro-implants from fractured teeth includes an operating disc, the bottom of which is provided with a connecting handle, and the bottom of the connecting handle is provided with a screw-removing cylinder.

[0008] The nail-pulling cylinder has a conical cavity inside;

[0009] The inner wall of the cavity is provided with a reverse thread adapted to the broken metal screw.

[0010] The bottom circumference of the nail-pulling cylinder is provided with equally spaced cutting teeth.

[0011] Preferably, the slope of the cavity is 4°.

[0012] Preferably, the vertical height of the nail-removing cylinder is 7mm, and the thickness of the top of the nail-removing cylinder is 2mm.

[0013] Preferably, the vertical height of the reverse threaded region on the inner wall of the cavity is 3.5 mm.

[0014] Preferably, the lower inner diameter of the nail-removing cylinder is 1.6mm, 1.85mm, or 2.1mm.

[0015] Preferably, the outer diameter of the nail-removing cylinder is 3mm, 3.25mm or 3.5mm.

[0016] The beneficial effects of this utility model are as follows:

[0017] The tool for removing broken micro-implants for teeth proposed in this utility model consists of an operating disc, a connecting handle, and a screw-removing cylinder. The inner wall of the screw-removing cylinder is provided with a reverse thread adapted to the broken metal screw. The bottom of the screw-removing cylinder is provided with cutting teeth for cutting alveolar bone. The reverse thread locks with the broken metal screw, which can hold the broken metal screw in the alveolar bone and facilitate the removal of the broken metal screw. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the tooth fracture micro-implant removal tool proposed in this utility model.

[0019] Figure 2 This is a cross-sectional view of the tooth fracture micro-implant removal tool proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the working structure of the tooth fracture micro-implant removal tool proposed in this utility model.

[0021] In the diagram: 1. Control panel; 2. Connecting handle; 3. Screw puller; 4. Cavity; 5. Reverse thread; 6. Cutting teeth; 7. Alveolar bone; 8. Broken metal screw. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1, referring to Figure 1-3 The tool for removing micro-implants from broken teeth consists of an operating disc 1, a connecting handle 2, and a screw-removing cylinder 3.

[0024] The nail-removing cylinder 3 has a conical cavity 4 inside;

[0025] The inner wall of cavity 4 is provided with a reverse thread 5 that is compatible with the broken metal screw 8;

[0026] The bottom of the nail-removing cylinder 3 is provided with equally spaced cutting teeth 6.

[0027] The slope of cavity 4 is 4°.

[0028] The inner wall of the screw puller 3 is provided with a reverse thread 5 that is compatible with the broken metal screw 8. The bottom of the screw puller 3 is provided with cutting teeth 6 for cutting alveolar bone 7. The reverse thread 5 locks with the broken metal screw 8, which can hold the broken metal screw 8 that broke in the alveolar bone 7, making it easy to remove the broken metal screw 8.

[0029] The specific dimensions are as follows:

[0030] The vertical height of the nail puller 3 is 7mm, and the thickness of the top of the nail puller 3 is 2mm.

[0031] The vertical height of the reverse thread 5 region on the inner wall of cavity 4 is 3.5mm.

[0032] The inner diameter of the lower part of the nail puller 3 is 1.6mm, 1.85mm or 2.1mm.

[0033] The outer diameter of the nail puller 3 is 3mm, 3.25mm, or 3.5mm.

[0034] Working principle: The inner wall of the nail puller 3 is provided with a reverse thread 5 that is compatible with the broken metal screw 8. The bottom of the nail puller 3 is provided with cutting teeth 6 for cutting alveolar bone 7. The reverse thread 5 locks with the broken metal screw 8, which can hold the broken metal screw 8 that broke in the alveolar bone 7, making it easy to remove the broken metal screw 8.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tool for removing micro-implants from fractured teeth, comprising an operating disc (1), characterized in that, The bottom of the operating panel (1) is provided with a connecting handle (2), and the bottom of the connecting handle (2) is provided with a nail-removing cylinder (3); The nail-removing cylinder (3) has a conical cavity (4) inside; The inner wall of the cavity (4) is provided with a reverse thread (5) that is compatible with the broken metal screw (8); The bottom of the nail-removing cylinder (3) is provided with equally spaced cutting teeth (6).

2. The tool for removing fractured micro-implants according to claim 1, characterized in that, The slope of the cavity (4) is 4°.

3. The tool for removing fractured micro-implants according to claim 1, characterized in that, The vertical height of the nail-removing cylinder (3) is 7mm, and the thickness of the top of the nail-removing cylinder (3) is 2mm.

4. The tool for removing fractured micro-implants according to claim 1, characterized in that, The vertical height dimension of the reverse thread (5) region on the inner wall of the cavity (4) is 3.5 mm.

5. The tool for removing fractured micro-implants according to claim 1, characterized in that, The lower inner diameter of the nail-removing cylinder (3) is 1.6mm, 1.85mm or 2.1mm.

6. The tool for removing fractured micro-implants according to claim 1, characterized in that, The outer diameter of the nail-removing cylinder (3) is 3mm, 3.25mm or 3.5mm.

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