Anti-slip dental forceps

Abstract

The invention relates to the technical field of dental forceps, in particular to an anti-slip dental forceps which comprises a forceps body. The two clamp arms are symmetrically hinged to the clamp body, and each clamp arm is provided with an independent rotating center to form a double-fulcrum structure; the synchronous pressurizing mechanism is arranged in the clamp body and has an avoiding state and a locking state; the synchronous pressurizing mechanism is configured to allow the two clamp arms to rotate asymmetrically in the avoiding state so as to adapt to the complex tooth form, and the synchronous pressurizing mechanism is configured to drive the jaws of the two clamp arms to synchronously pressurize in the closing direction in the locking state. According to the invention, the technical prejudice that a single hinge shaft is generally adopted as a common fulcrum of two forceps arms of the traditional conventional dental forceps, and synchronous closing can be ensured only by rotating the two forceps arms around the same axis is changed, a double-rotation center structure is adopted to correspond to the two forceps arms, and each forceps arm has an independent fulcrum; the two forceps arms are allowed to independently rotate in an asymmetric path to adapt to teeth of an asymmetric structure.

Description

Technical Field

[0001] The present invention relates to the technical field of extraction forceps, and specifically to an anti-slip extraction forceps. Background Art

[0002] An extraction forceps is a commonly used instrument in oral clinical practice. Its core function is to hold the tooth by the jaws and apply an external force to complete the tooth extraction operation.

[0003] Traditional extraction forceps mostly have a single fulcrum structure in terms of structure, which is difficult to adapt to the asymmetric root morphology. Especially when extracting multi-root teeth or curved teeth, the jaws are prone to shift, resulting in uneven force application. And during the tooth extraction process, it relies on medical staff to continuously hold the handle tightly to maintain the clamping force. However, during the pulling process, it is impossible to achieve the dynamic matching of the pulling force and the clamping force, so the tooth is prone to slip off. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides an anti-slip extraction forceps, and the specific technical solutions are as follows:

[0005] An anti-slip extraction forceps includes:

[0006] A forceps body;

[0007] Two forceps arms symmetrically hinged to the forceps body, and both of the two forceps arms have independent rotation centers to form a double fulcrum structure;

[0008] And a synchronous pressure boosting mechanism arranged in the forceps body, and the synchronous pressure boosting mechanism has an avoidance state and a locking state;

[0009] In the avoidance state of the synchronous pressure boosting mechanism, it is configured to allow the two forceps arms to rotate asymmetrically to adapt to complex tooth morphologies. In the locking state of the synchronous pressure boosting mechanism, it is configured to drive the jaws of the two forceps arms to synchronously boost pressure in the closing direction.

[0010] As a further technical solution of the present invention, the synchronous pressure boosting mechanism includes two rotating components and a traction arm rotatably arranged in the forceps body. The two rotating components are symmetrically arranged in the forceps body and respectively correspond to the two forceps arms. The rotating component includes a rotating shaft and a helical gear coaxially connected to the outside of the rotating shaft. The traction arm is arranged between the two rotating components, and tooth block groups meshing with the helical gears are evenly arranged on the end faces facing the two rotating components. When the traction arm is pulled, it meshes with the helical gears and enters the locking state.

[0011] As a further technical solution of the present invention, the free end of the traction arm extends outside the forceps body and is connected with a handle, and the traction arm and the handle are vertically connected to form a T-shaped structure.

[0012] As a further technical solution of the present invention, both ends of the handle have inward bends.

[0013] As a further technical solution of the present invention, a sleeve is provided inside the pliers body, and the traction arm is hidden inside the sleeve under normal conditions to avoid the independent rotation of the pliers arm.

[0014] As a further technical solution of the present invention, the pliers arm has a connecting piece, a pliers mouth part and a power arm. The connecting piece is rotatably arranged on the pliers body, and the pliers mouth part and the power arm are respectively located on both sides of the rotation center to form a lever structure.

[0015] As a further technical solution of the present invention, a slideway corresponding to the handle is provided on the power arm, and the handle extends laterally and penetrates through the slideway.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) In the present application, the traditional conventional tooth extraction forceps usually use a single hinge axis as the common fulcrum of the two pliers arms, believing that the two pliers arms must rotate around the same axis to ensure synchronous closing. This technical prejudice is overcome. A double-rotation center structure is adopted to correspond to the two pliers arms, that is, each pliers arm has an independent fulcrum, allowing the two pliers arms to rotate independently along an asymmetric path to adapt to teeth with an asymmetric structure, solving the problem of insufficient adaptability of the traditional single-fulcrum structure when clamping complex tooth bodies.

[0018] (2) In the present application, a synchronous boosting mechanism is provided at the same time, which can avoid the independent rotation of the pliers arm during the clamping stage of the teeth, and can realize synchronous boosting when the pliers mouth parts of the two pliers arms close inward when being pulled, automatically converting the axial pulling force into the closing force of the pliers mouth, realizing the mechanical characteristic of "the tighter it is pulled", without relying on continuous manual grip force. Description of the Drawings

[0019] Figure 1 Shows a schematic diagram of the overall structure of an anti-slip tooth extraction forceps;

[0020] Figure 2 Shows a schematic diagram of the structure of two pliers arms;

[0021] Figure 3 Shows a schematic diagram of the structure of the synchronous boosting mechanism;

[0022] Figure 4 Shows a schematic diagram of the structure of the traction arm and the handle.

[0023] Description of the Drawings: 100, pliers body; 200, pliers arm; 210, connecting piece; 220, pliers mouth part; 230, power arm; 231, slideway; 300, synchronous boosting mechanism; 310, rotating shaft; 320, helical gear; 330, traction arm; 340, handle; 341, bent-back part; 350, sleeve. Detailed Embodiments

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0025] Figure 1 The overall structural schematic diagram of an anti-slip tooth extraction forceps is shown; Figure 1 In the figure, it includes a forceps body 100, two forceps arms 200 symmetrically hinged on the forceps body 100, and a synchronous boosting mechanism 300 arranged inside the forceps body 100. The synchronous boosting mechanism 300 is configured to drive the jaws of the two forceps arms 200 to synchronously boost in the closing direction when being pulled; that is to say, when the two forceps arms 200 rotate and close to clamp the tooth, applying a pulling force away from the tooth to the synchronous boosting mechanism 300 can drive the jaws of the two forceps arms 200 to boost in the closing direction, which can not only ensure the pulling force away from the tooth but also synchronously increase the clamping force of the clamping, avoiding the tooth from slipping after being clamped.

[0026] During clinical use, first align the jaws 220 with the target tooth and independently rotate the two forceps arms 200 to adapt to the root morphology of the tooth. When it is confirmed that the clamping is stable, pull the handle 340 outwards to trigger the synchronous boosting mechanism 300. At this time, the axial pulling force is converted into the jaw closing pressure through the traction arm 330 to achieve dynamic boosting.

[0027] In actual manufacturing, both the forceps body 100 and the forceps arms 200 are made of medical-grade stainless steel or titanium alloy materials to meet the requirements of high strength and biocompatibility.

[0028] Figure 2 The structural schematic diagram of the two forceps arms 200 is shown; Figure 2In this case, the pliers arm 200 has a connecting member 210, a jaw portion 220, and a power arm 230. The connecting member 210 is rotatably provided on the pliers body 100. The jaw portion 220 and the power arm 230 are respectively located on both sides of the rotation center to form a lever structure. The connection between the connecting member 210 and the pliers body 100 enables the pliers arm 200 to rotate integrally relative to the pliers body 100. The jaw portion 220 can extend into the teeth to clamp the teeth. The power arm 230, as the power arm, has a length much greater than that of the jaw portion 220, so that the power can be amplified to form a labor-saving lever. It should be noted that the specific ratio of the power arm 230 to the jaw portion 220 is not limited in this application. Moreover, the power arm 230 and the jaw portion 220 are distributed on different sides of the fulcrum. That is to say, when the power arms 230 of the two pliers arms 200 approach each other, the jaw portions 220 in the two pliers arms 200 also approach each other relatively for clamping. The rotation centers of the two pliers arms 200 are symmetric with respect to the center of the pliers body 100, which changes the technical prejudice that the traditional conventional extraction forceps usually use a single hinge axis as the common fulcrum of the two pliers arms and believes that the two pliers arms must rotate around the same axis to ensure synchronous closing. A double-rotation center structure is adopted to correspond to the two pliers arms 200, that is, each pliers arm has an independent fulcrum. In cooperation with the setting of the synchronous pressure increasing mechanism 300, the two pliers arms are allowed to rotate independently along an asymmetric path to adapt to the teeth with an asymmetric structure. At the same time, the synchronous pressure increasing mechanism 300 is used to force synchronization to apply symmetric pressure increase, solving the problem of insufficient adaptability of the traditional single-fulcrum structure when clamping complex tooth bodies.

[0029] Figure 3 The structural schematic diagram of the synchronous pressure increasing mechanism 300 is shown; Figure 4 The structural schematic diagram of the traction arm 330 and the handle 340 is shown; Figure 3 and Figure 4In the embodiment, the synchronous boosting mechanism 300 includes two rotating components rotatably arranged in the caliper body 100 and a traction arm 330 driving the two rotating components to rotate in opposite directions. The two rotating components are symmetrically arranged in the caliper body 100 and correspond to the two caliper arms 200 respectively; that is, the two caliper arms 200 are respectively connected to the caliper body 100 through the rotating components; the rotating component includes a rotating shaft 310 and a bevel gear 320 coaxially connected to the outside of the rotating shaft 310, one end of the connecting member 210 is connected to the caliper body 100, and the other end is connected to the caliper arm 200, and when rotating, the caliper arm 200 can be driven to rotate around it, that is, the rotating shaft The axis of 310 is the fulcrum; the traction arm 330 is arranged between the two rotating components and the end faces facing the two rotating components are evenly provided with tooth block groups that mesh with the bevel gears 320; that is, when the traction arm 330 is pulled, the tooth block groups on both sides of the traction arm 330 simultaneously mesh with the two bevel gears 320, thereby driving the two rotating components to rotate in opposite directions, thereby achieving synchronous pressurization when the jaws 220 of the two clamp arms 200 are closed inwardly; the axial pulling force is automatically converted into the closing force of the jaws, thereby achieving the mechanical characteristic of "the more you pull, the tighter it is", without relying on continuous manual grip, subverting the traditional operating logic.

[0030] It should be noted that, during the clamping stage of the teeth, the traction arm 330 moves toward the direction of the pliers body 100 and causes the tooth block group to avoid the bevel gear 320 to allow the pliers arm 200 to rotate independently; and during the tooth extraction stage after the teeth are clamped, pulling the traction arm 330 outward can drive the two pliers arms 200 to increase pressure inward synchronously, which is beneficial for tooth extraction.

[0031] Continue to see Figure 3 and Figure 4 The free end of the traction arm 330 extends to the outside of the pliers body 100 and is connected to a handle 340. The power arm 230 is provided with a slideway 231 corresponding to the handle 340, and both ends of the handle 340 have an inward bend 341; the traction arm 330 and the handle 340 are vertically connected to form a T-shaped structure, which is convenient for holding, and the handle 340 extends laterally through the slideway 231, so that the operator can pull the handle 340 after holding the two power arms 230 and clamping them, which is convenient for one-handed operation, and the setting of the bend 341 prevents the fingers from slipping to both sides; a sleeve 350 is provided in the pliers body 100, and the traction arm 330 is hidden in the sleeve 350 under normal conditions to avoid the independent rotation of the pliers arm 200; the surface of the handle 340 is provided with anti-slip textures, thereby increasing the friction of the hand and ensuring the stability of the hand during the pulling process.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. An anti-slip tooth extraction forceps, characterized in that, Comprising: A pliers body (100); Two pliers arms (200) symmetrically hinged to the pliers body (100), both of the two pliers arms (200) having independent rotation centers to form a double fulcrum structure; And a synchronous supercharging mechanism (300) disposed within the pliers body (100), the synchronous supercharging mechanism (300) having an avoidance state and a locking state; In the avoidance state, the synchronous supercharging mechanism (300) is configured to allow the two pliers arms (200) to rotate asymmetrically to adapt to complex tooth morphologies, and in the locking state, the synchronous supercharging mechanism (300) is configured to drive the jaws of the two pliers arms (200) to synchronously supercharge in the closing direction.

2. The anti-slip tooth extraction forceps according to claim 1, characterized in that: The synchronous supercharging mechanism (300) includes two rotating components rotatably disposed within the pliers body (100) and a traction arm (330). The two rotating components are symmetrically disposed within the pliers body (100) and respectively correspond to the two pliers arms (200). The rotating component includes a rotating shaft (310) and a helical gear (320) coaxially connected outside the rotating shaft (310). The traction arm (330) is disposed between the two rotating components, and tooth block groups meshing with the helical gears (320) are uniformly disposed on the end faces facing the two rotating components. When the traction arm (330) is pulled, it meshes with the helical gears (320) and enters the locking state.

3. The anti-slip tooth extraction forceps according to claim 2, wherein: The free end of the traction arm (330) extends outside the pliers body (100) and is connected with a handle (340). The traction arm (330) and the handle (340) are perpendicularly connected to form a T-shaped structure, and both ends of the handle (340) have inward bends (341).

4. The anti-slip tooth extraction forceps according to claim 2, wherein: Both ends of the handle (340) have inward bends (341).

5. The anti-slip tooth extraction forceps according to claim 2, characterized in that: A sleeve (350) is disposed within the pliers body (100), and the traction arm (330) is hidden within the sleeve (350) under normal conditions to avoid the independent rotation of the pliers arm (200).

6. The anti-slip tooth extraction forceps according to claim 2, characterized in that: The pliers arm (200) has a connecting member (210), a jaw portion (220), and a power arm (230). The connecting member (210) is rotatably disposed on the pliers body (100), and the jaw portion (220) and the power arm (230) are respectively located on both sides of the rotation center to form a lever structure.

7. The anti-slip tooth extraction forceps according to claim 5, characterized in that: A slideway (231) corresponding to the handle (340) is formed on the power arm (230), and the handle (340) extends laterally and passes through the slideway (231).

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