Built-in self-stressing gap-increasing dental elevator

Abstract

The utility model discloses a built-in self-stressing gap-increasing dental elevator which comprises a handle column and a dental elevator rod fixedly connected with the handle column, the other end of the dental elevator rod is fixedly provided with an elevator tip, the upper end of the handle column is fixedly connected with an electromagnet provided with a switch, a stressing cavity is formed in the axial direction of an inner cavity of the handle column, and a fixing shaft is fixedly connected in the axial direction of the stressing cavity. The outer wall of the fixing shaft is slidably connected with a counterweight iron block which is magnetically attracted to the electromagnet, and one end, close to the tappet, of the stress application cavity is fixedly provided with a buffer piece which penetrates through the fixing shaft and is collided with the counterweight iron block to reduce vibration. According to the utility model, knocking force with stable direction can be provided for the tooth tappet rod and the tappet tip, the knocking direction is controllable, the knocking force can be vertically conducted to the tail end of the tooth extraction tappet, gap increasing power is provided for the tappet tip, the tappet tip is ensured to be inserted into a correct position, and the tooth extraction effect is ensured; a patient can keep stable under the condition that the balance weight iron block cannot be seen, and normal extraction of teeth is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of tooth extraction elevator technology, and in particular to a tooth extraction elevator with built-in self-adjusting force to increase clearance. Background Technology

[0002] In clinical practice, for teeth that cannot be saved, extraction elevators are used for removal. The specific procedure is as follows: After local anesthesia, the blade of the extraction elevator is inserted between the root of the tooth to be extracted and the alveolar bone near the middle. The elevator is then inserted to create a gap between the root and the alveolar bone, thereby loosening the tooth and allowing for extraction. However, because the periodontal ligament between the root and the alveolar bone is quite tight, inserting the extraction elevator between the root and the alveolar bone is difficult. In some cases, the root and alveolar bone are fused together, and conventional force cannot separate them. Therefore, in such situations, an assistant often needs to use a metal hammer to strike the handle of the extraction elevator to provide power and assist in inserting the elevator into the gap between the root and the alveolar bone to remove the root.

[0003] However, the direction of the tapping when using a metal hammer to strike the handle of the extraction elevator is uncontrollable, and the striking force cannot be transmitted vertically to the end of the extraction elevator, which can easily lead to the elevator being inserted into the wrong position. In more serious cases, the hammer or elevator may even slip out, resulting in oral accessory injuries. Secondly, the tapping process can cause patients to feel great fear, making them prone to trembling, which can affect the extraction of the tooth. Utility Model Content

[0004] To address the technical problems of existing technologies, such as the uncontrollable striking direction when using a metal hammer to strike the handle of a tooth extraction elevator, the inability to transmit striking force vertically to the end of the elevator, the easy insertion of the elevator into the wrong position, and the significant fear and trembling experienced by patients during the striking process, which can affect tooth extraction, this invention provides the following technical solution.

[0005] This utility model discloses a built-in self-adjusting force-increasing extraction elevator, comprising a handle post and an extraction elevator rod fixedly connected to the handle post. The other end of the extraction elevator rod is fixedly provided with an extraction tip. An electromagnet with a switch is fixedly connected to the upper end of the handle post. A force-increasing cavity is provided in the axial direction of the inner cavity of the handle post. A fixed shaft is fixedly connected in the axial direction of the force-increasing cavity. A counterweight block attracted by the magnetism of the electromagnet is slidably connected to the outer wall of the fixed shaft. A buffer member that passes through the fixed shaft and impacts the counterweight block is fixedly provided at one end of the force-increasing cavity near the extraction elevator rod to reduce vibration.

[0006] As a further technical solution, the buffer includes a fixed disk fixedly connected to the bottom of the force-applying cavity and a buffer disk slidably connected to the fixed shaft, with a spring provided between the fixed disk and the buffer disk.

[0007] As a further technical solution, the upper and lower ends of the spring are fixedly connected to the fixed disk and the buffer disk, respectively.

[0008] As a further technical solution, the buffer disk is provided with a lifting groove that matches the fixed shaft.

[0009] As a further technical solution, the outer diameter of the counterweight block is smaller than the inner diameter of the force-applying cavity.

[0010] As a further technical solution, the buffer is an elastic pad.

[0011] As a further technical solution, the fixed shaft includes a shaft body and a plurality of limiting strips located on the outer wall of the shaft body, and the counterweight block is provided with a sliding groove that matches the shaft body and a limiting groove that matches the limiting strips.

[0012] The beneficial effects of this invention are as follows: The handle post of this invention has a force-applying chamber containing an axially sliding counterweight attracted by the magnetism of an electromagnet. Controlled by the electromagnet, the counterweight moves up and down along the axis of the handle post, providing a stable striking force to the elevator and its tip. The striking direction is controllable, and the striking force is vertically transmitted to the end of the elevator, providing clearance-building power to ensure the correct insertion position and thus guaranteeing the extraction effect. The counterweight moves up and down within the force-applying chamber, allowing the patient to remain stable without visual inspection, thus ensuring psychological stability and successful tooth extraction. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the external structure of the built-in self-adjusting force-increasing tooth extraction elevator of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the force-adding cavity of the built-in self-applying force-increasing extraction elevator of this utility model;

[0015] Figure 3 This is a schematic diagram of the counterweight block of the built-in self-adjusting force-increasing tooth extraction elevator of this utility model;

[0016] Figure 4 This is a schematic diagram of the buffer component of the built-in self-adjusting force-increasing tooth extraction elevator of this utility model;

[0017] In the diagram: 1-Handle post; 101-Force-applying chamber; 2-Ejector rod; 3-Ejector tip; 4-Electromagnet; 5-Switch; 6-Fixed shaft; 601-Shaft body; 602-Limiting strip; 7-Counterweight block; 701-Slide groove; 702-Limiting groove; 8-Buffer component; 801-Fixed plate; 802-Spring; 803-Buffer plate; 804-Lifting groove. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0019] In the description of this utility model, it should be understood that the terms "upper" and "lower" are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] like Figure 1 As shown, this utility model discloses a built-in self-adjusting force-increasing tooth extraction elevator, which includes a hollow handle post 1 and an elevator rod 2 fixedly connected to the handle post 1. The other end of the elevator rod 2 is fixedly provided with an elevator tip 3. The elevator rod 2 and the elevator tip 3 adopt existing structures, which will not be described in detail here.

[0021] like Figure 2 As shown, in a preferred embodiment, an electromagnet 4 with a switch 5 is fixedly connected to the upper end of the handle post 1. For ease of use by the operator, the switch 5 can be extended to one side of the handle post 1 via a cable. A force-applying cavity 101 is provided along the axial direction of the inner cavity of the handle post 1. Both the handle post 101 and the inner wall of the force-applying cavity 101 are coated with a shielding layer to prevent interference with the electromagnet 4. A fixed shaft 6 is fixedly connected along the axial direction of the force-applying cavity 101. The fixed shaft 6 is made of a high-strength non-metallic material to prevent the electromagnet 4 from generating a magnetic attraction effect on it. The fixed shaft 6 can be made of high-strength and wear-resistant materials such as nylon 6, nylon 66, or nylon 12.

[0022] A counterweight 7, magnetically attracted to the electromagnet 4, is slidably connected to the outer wall of the fixed shaft 6. The electromagnet 4 has an outer casing and is fixedly connected to the handle post 1 by bolts. When energized, the electromagnet 4 magnetically attracts the counterweight 7 in the force-applying cavity 101, causing the counterweight 7 to rise. When de-energized, the counterweight 7 falls freely. Thus, under the action of the electromagnet 4, the counterweight 7 moves up and down relative to the fixed shaft 6. When the counterweight 7 moves from the upper part to the lower part of the fixed shaft 6, it generates a striking force on the bottom of the force-applying cavity 101, which in turn generates a striking force on the dental elevator 2 and the elevator tip 3. The striking force can be vertically transmitted to the end of the extraction elevator, providing clearance-increasing power for the elevator tip 3 and ensuring that the elevator tip 3 is inserted in the correct position. To reduce the friction when the counterweight 7 slides up and down, the outer diameter of the counterweight 7 is smaller than the inner diameter of the force-applying cavity 101 to prevent friction between the counterweight 7 and the inner wall of the force-applying cavity 101.

[0023] like Figure 3 As shown, in a preferred embodiment, the fixed shaft 6 includes a shaft body 601 and a plurality of limiting strips 602 located on the outer wall of the shaft body 601. The shaft body 601 has a cylindrical structure, and its two ends are fixedly connected to the upper and lower ends of the force-applying cavity 101, respectively. The counterweight block 7 is provided with a sliding groove 701 that matches the shaft body 601 and a limiting groove 702 that matches the limiting strips 602. In this way, the counterweight block 7 can move up and down relative to the fixed shaft 6 along the axial direction of the fixed shaft 6, preventing the radial rotation of the counterweight block 7 from interfering with the shaking of the handle column 1.

[0024] In a preferred embodiment, a buffer 8 is fixedly provided at one end of the force-applying cavity 101 near the dental elevator 2. The buffer 8 passes through the fixed shaft 6 and is fixedly connected to the bottom of the force-applying cavity 101. When the counterweight block 7 slides downward from the upper part of the force-applying cavity 101 and provides a striking force to the elevator tip 3, the buffer 8 is used to buffer and dampen the striking force to prevent excessive striking force from damaging the tooth root. At this time, the buffer 8 can be an elastic pad with a certain elasticity. Of course, the buffer 8 can also be other structures with buffering and damping functions.

[0025] like Figure 4As shown, in a preferred embodiment, the buffer 8 includes a fixed disk 801 fixedly connected to the bottom of the force-applying cavity 101 and a buffer disk 803 slidably connected to the fixed shaft 6. The buffer disk 803 is made of non-metallic material, and a spring 802 is provided between the fixed disk 801 and the buffer disk 803. At this time, both the fixed shaft 6 and the fixed disk 801 are fixedly connected to the bottom of the force-applying cavity 101. The upper and lower ends of the spring 802 are fixedly connected to the fixed disk 801 and the buffer disk 803, respectively. The spring 802 is sleeved on the outer periphery of the fixed shaft 6, and the buffer disk 803 is provided with a lifting groove 804 that matches the fixed shaft 6. When the counterweight 7 falls, it impacts the buffer disk 803. The counterweight 7 and the buffer disk 803 simultaneously compress the spring 802 and slide slowly along the fixed shaft 6, thus buffering and damping the impact force from the counterweight 7 and preventing excessive impact force from damaging the tooth root.

[0026] The preferred embodiments and examples of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, various changes or equivalent substitutions can be made without departing from the concept of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A built-in self-adjusting force-enhancing extraction elevator, comprising a handle post (1) and an elevator rod (2) fixedly connected to the handle post (1), wherein the other end of the elevator rod (2) is fixedly provided with an elevator tip (3), characterized in that: An electromagnet (4) with a switch (5) is fixedly connected to the upper end of the handle post (1). A force-applying cavity (101) is provided in the axial direction of the inner cavity of the handle post (1). A fixed shaft (6) is fixedly connected in the axial direction of the force-applying cavity (101). A counterweight (7) that is magnetically attracted to the electromagnet (4) is slidably connected to the outer wall of the fixed shaft (6). A buffer (8) that passes through the fixed shaft (6) and impacts the counterweight (7) is fixedly provided at one end of the force-applying cavity (101) near the toothed rod (2).

2. The built-in self-adjusting force-enhancing extraction elevator according to claim 1, characterized in that: The buffer (8) includes a fixed disk (801) fixedly connected to the bottom of the force chamber (101) and a buffer disk (803) slidably connected to the fixed shaft (6), and a spring (802) is provided between the fixed disk (801) and the buffer disk (803).

3. The built-in self-adjusting force-enhancing extraction elevator according to claim 2, characterized in that: The upper and lower ends of the spring (802) are fixedly connected to the fixed plate (801) and the buffer plate (803), respectively.

4. The built-in self-adjusting force-enhancing extraction elevator according to claim 2, characterized in that: The buffer plate (803) is provided with a lifting groove (804) that matches the fixed shaft (6).

5. The built-in self-adjusting force-increasing extraction elevator according to claim 1, characterized in that: The outer diameter of the counterweight block (7) is smaller than the inner diameter of the force-applying cavity (101).

6. The built-in self-adjusting force-enhancing extraction elevator according to claim 1, characterized in that: The buffer (8) is an elastic pad.

7. The built-in self-adjusting force-enhancing extraction elevator according to claim 1, characterized in that: The fixed shaft (6) includes a shaft body (601) and a plurality of limiting strips (602) located on the outer wall of the shaft body (601). The counterweight block (7) is provided with a sliding groove (701) that matches the shaft body (601) and a limiting groove (702) that matches the limiting strips (602).

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