A type of orthodontic wire forceps

Abstract

This utility model discloses an orthodontic fine wire forceps, including a first handle and a second handle. The first handle has a fixing block at its end, and a mounting platform on its surface. The second handle has a mounting plate at its end, which is rotatably positioned above the mounting platform. A turntable is located between the mounting platform and the mounting plate. An extension block is located on one side of the turntable, and a second jaw is located at the end of the extension block. The fixing block has a first jaw at its end. The first and second jaws are symmetrically arranged. A compression cone is mounted on the surface of the first jaw. A semi-circular curved surface is located on the inner side of the second jaw, and angle markings are provided on its surface. The second jaw has an arc-shaped groove that mates with the compression cone. The turntable is rotatably connected to the mounting platform and the mounting plate via a pin. The mounting plate has a positioning pin that mates with a positioning hole. The semi-circular curved surface and arc-shaped groove enable rapid bending of the fine wire at 90° and 180°. The detachable positioning pin structure prevents fine wire indentation and enhances the safety of instrument use.

Description

Technical Field

[0001] This utility model belongs to the field of orthodontic fine wire forceps technology, specifically relating to an oral orthodontic fine wire forceps. Background Technology

[0002] In orthodontic treatment, to achieve precise tooth movement, orthodontists typically need to bend and shape the orthodontic wire according to the treatment plan to create an archwire that meets mechanical requirements. Current orthodontic forceps usually rely on manual experience to judge the bending angle when bending the wire, resulting in inconsistent bending angle accuracy and poor repeatability. Furthermore, when bending common angles such as 90° or 180°, the lack of clear positioning and guiding structures easily leads to inaccurate bending, affecting the treatment outcome.

[0003] Furthermore, some existing pliers are prone to causing indentations on the surface of thin wires due to excessive pressure during the bending and pressing process, affecting their mechanical properties and aesthetics. This problem is particularly pronounced when the user applies uneven force or makes operational errors. Some pliers lack protective mechanisms and cannot release the force transmission under overload conditions, frequently resulting in damage to the pliers or the thin wires. Utility Model Content

[0004] To address the problems existing in the prior art, the purpose of this utility model is to provide an orthodontic wire forceps that can achieve high-precision bending at multiple angles and has pressure limiting protection, thereby improving bending efficiency and treatment quality, and solving problems such as inaccurate bending angle control, easy indentation of the wire, and lack of overload protection in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an orthodontic fine wire forceps, comprising a first handle and a second handle, wherein a fixing block is provided at the end of the first handle, and an installation platform is provided on the surface of the fixing block; and an installation plate is provided at the end of the second handle, wherein the installation plate is rotatably positioned above the installation platform.

[0006] A turntable is installed between the installation platform and the installation plate. An extension block is provided on one side of the turntable. A second clamping beak is installed at the end of the extension block, and a first clamping beak is installed at the end of the fixing block.

[0007] The first and second jaws are symmetrically arranged. The front end of the inner side of the first jaw is provided with a flat surface, and the front end of the inner side of the second jaw is provided with a semi-circular curved surface. A compression cone is installed on the surface of the first jaw.

[0008] Furthermore, the inner side of the first jaw is provided with an installation groove, the extrusion cone rotates inside the installation groove, the positions of the two sides of the first jaw corresponding to the installation groove are set as vertical planes, the upper surface of the vertical plane is lower than the rotation axis of the extrusion cone, and the surface of the second jaw is provided with an arc-shaped pressure groove adapted to the extrusion cone.

[0009] Furthermore, the extrusion cone has a tapered structure that is smaller at the front and larger at the back, and the surface of the extrusion cone is uniformly provided with grooves.

[0010] Furthermore, any cross-section of the semicircular surface along the axis is a semicircle, and the surface of the semicircular surface is uniformly engraved with angle lines.

[0011] Furthermore, the mounting platform, mounting plate, and turntable are rotatably mounted together via pins, and positioning holes are symmetrically provided on the upper surface of the turntable.

[0012] Furthermore, the mounting plate has symmetrical bosses on its upper surface, the bosses corresponding to the positioning holes, and positioning pins slidably installed inside the bosses. The bottom outer edge of the positioning pins has an arc surface, and the bottom of the positioning pins is placed inside the positioning holes.

[0013] Furthermore, an extension rod is provided at the top center of the positioning pin, the extension rod extends beyond the upper surface of the boss, and a connecting crossbar is connected between the two extension rods. A spring is sleeved on the surface of the extension rod, the spring is placed inside the boss, and the spring applies a pushing force to the positioning pin toward the turntable.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By setting up a first jaw and a second jaw, and by creating a semi-circular curved surface on the inner side of the second jaw and engraving angle lines on its surface, a clear angle reference can be provided during the bending of the fine wire. This allows the operator to have a visual control basis when performing bending at commonly used angles such as 90° and 120°, thereby effectively solving the problem that the bending angle of traditional orthodontic forceps relies entirely on experience and has low bending accuracy.

[0016] A rotatable extrusion cone is mounted on the first jaw, and multiple grooves of different sizes are provided on its surface. In conjunction with the arc-shaped pressure groove on the surface of the second jaw, the orthodontic filament can be bent 180°. At the same time, the guiding effect of the vertical plane ensures that the filament is in the same direction after bending, effectively solving the problem that existing clamps cannot achieve stable 180° bending or that the filament is severely deformed after bending.

[0017] The rotary structure connects to the forceps beak via an extension block. Combined with the rotating mounting structure of the mounting platform and mounting plate, the forceps body can be rotated, improving the flexibility of bending operations and further enhancing the control precision of the bending angle. This effectively solves the problems of existing orthodontic forceps having a small operating angle range and a fixed structure that prevents rotation.

[0018] The locating pin with an arc-shaped structure is provided with a spring to reliably engage with the locating hole. This ensures stable positioning of the clamp body during bending operations. When the force is too great, the locating pin can automatically slip out to release the overload, preventing indentations on the filament surface. This effectively solves the problem of filament damage or instrument deformation caused by excessive force in traditional structures. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the installation three-dimensional structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the first clamp handle and turntable mounting structure of this utility model;

[0021] Figure 3 This is a cross-sectional structural diagram of the turntable and mounting plate of this utility model;

[0022] Figure 4 This is a schematic diagram of the second pincer beak structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the first jaw and extrusion cone structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the first pincer beak structure of this utility model.

[0025] The components represented by each number in the attached diagram are listed below: 1. First clamp handle; 11. Fixing block; 12. Mounting platform; 2. Second clamp handle; 21. Mounting plate; 22. Boss; 3. Turntable; 31. Positioning hole; 32. Extension block; 4. Positioning pin; 41. Arc surface; 42. Extension rod; 43. Connecting crossbar; 5. First jaw; 51. Flat surface; 52. Mounting groove; 53. Vertical surface; 6. Second jaw; 61. Semi-circular curved surface; 62. Angle marking; 63. Arc-shaped pressure groove; 7. Extrusion cone rod; 71. Wire groove; 8. Spring. Detailed Implementation

[0026] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0027] refer to Figures 1-6As shown, an orthodontic fine wire forceps includes a first handle 1 and a second handle 2. A fixing block 11 is provided at the end of the first handle 1, and a mounting platform 12 is provided on the surface of the fixing block 11. A mounting plate 21 is provided at the end of the second handle 2, and the mounting plate 21 is rotatably positioned above the mounting platform 12. A turntable 3 is provided between the mounting platform 12 and the mounting plate 21 to realize the rotation function of the forceps. The turntable 3 is interconnected with the mounting platform 12 and the mounting plate 21 via a pin assembly to form a rotatable structure. One side of the turntable 3 has an outwardly extending... The extension block 32 has a second jaw 6 installed at its end, which is used to cooperate with the first jaw 5 to complete the filament bending action. The end of the fixing block 11 is equipped with the first jaw 5. The first jaw 5 and the second jaw 6 are arranged symmetrically in pairs. The front end of the inner side of the first jaw 5 is provided with a plane 51 for contacting the filament. The front end of the inner side of the second jaw 6 is provided with a semi-circular curved surface 61, which is used to realize the 90° bending operation of the filament. The surface of the first jaw 5 is equipped with a pressing cone 7, which is used to realize the pressing and positioning function of bending the filament at 180°.

[0028] refer to Figure 5 and Figure 6 As shown, the first jaw 5 has an installation groove 52 on its inner side. The extrusion cone 7 is set inside the installation groove 52 through the central axis and can be rotated and adjusted to adapt to different bending requirements. Vertical surfaces 53 are set on both sides of the first jaw 5 corresponding to the installation groove 52. The upper surface of the vertical surface 53 is lower than the rotation axis of the extrusion cone 7. It is used to guide the two ends of the filament to be vertically aligned downward and fit against the vertical surface 53 after the filament is bent 180°. The surface of the second jaw 6 has an arc-shaped pressing groove 63 that matches the pressing part at the front end of the extrusion cone 7. When the first jaw 5 and the second jaw 6 are closed, the arc-shaped pressing groove 63 gradually covers the conical surface of the extrusion cone 7, thereby progressively pressing the filament placed in it to complete the precise 180° bending operation.

[0029] refer to Figure 5 As shown, the extrusion cone 7 has a tapered structure that is smaller at the front and larger at the back. Multiple grooves 71 are evenly opened on the outer surface of the extrusion cone 7 along the axial direction. The size of the grooves 71 increases with the increase of the diameter of the cone, which makes it easy to select a suitable groove to meet the needs of filaments with different diameters or different bending radii. This tapered design can provide multiple bending radii, expand the applicable range of filament bending function, and improve the flexibility and efficiency of orthodontic operation.

[0030] refer to Figure 4As shown, any cross-section of the semicircular surface 61 along the axial direction has a standard semicircular structure, which facilitates accurate guidance of the filament and 180° bending deformation. The outer surface of the semicircular surface 61 is uniformly engraved with angle lines 62, which are used by the operator to observe the bending angle of the filament in real time during the bending process. This makes the quantitative bending operation at different angles such as 90°, 120°, 150°, and 180° more intuitive and accurate, effectively solving the problem that the bending angle of traditional orthodontic forceps depends on experience.

[0031] refer to Figure 2 and Figure 3 As shown, the mounting platform 12, mounting plate 21 and turntable 3 are rotated together by a pin assembly. The upper surface of the turntable 3 is symmetrically provided with positioning holes 31. The positioning holes 31 are used to cooperate with the positioning mechanism to control the rotation range of the turntable 3 and realize the position fixing function, thereby stabilizing the posture of the clamp body in the bending operation and improving the overall operability and safety.

[0032] refer to Figure 3 As shown, the upper surface of the mounting plate 21 is symmetrically provided with bosses 22. The bosses 22 are used to install the positioning mechanism that mates with the positioning hole 31. The positioning pin 4 is slidably installed inside the bosses 22. The bottom outer edge of the positioning pin 4 is provided with an arc surface 41. The arc surface 41 can guide the bottom of the positioning pin 4 to slide out of the positioning hole 31 when the force is too large, thereby realizing an overload relief function, thus preventing irreversible indentation on the surface of the filament due to excessive force, and protecting the integrity of the clamp body structure.

[0033] refer to Figure 3 As shown, an extension rod 42 is provided at the top center of the positioning pin 4. The extension rod 42 extends from the upper surface of the boss 22. The two extension rods 42 are connected by a connecting crossbar 43, which enhances the structural synchronization and stability between the two positioning pins 4. A spring 8 is sleeved on the surface of the extension rod 42. The spring 8 is pressed inside the boss 22 and applies a continuous downward thrust to the positioning pin 4, so that the positioning pin 4 always keeps in close contact with the positioning hole 31 of the turntable 3, thereby realizing the synchronous rotation and stable bending control of the pliers handle during use.

[0034] The working principle of this utility model is as follows: When in use, the spring 8 pushes the bottom of the positioning pin 4 into the positioning hole 31, which causes the second clamp 2 and the turntable 3 to rotate relative to the first clamp 1. This allows the user to control the opening and closing of the first jaw 5 and the second jaw 6. When bending the filament, the filament can be placed on the surface of the semi-circular surface 61. By controlling the first jaw 5 and the second jaw 6, the filament is squeezed. Then, the clamp body is rotated so that the filament rotates around the surface of the semi-circular surface 61, thereby achieving bending. The bending angle can be effectively controlled by observing the angle markings 62. The semi-circular surface 61 is semi-circular. When the filament passes around the semi-circular surface 61 and adheres to the side of the second jaw 6, the angle is exactly 90 degrees, thus achieving a rapid bending at a 90° angle.

[0035] When a 180-degree bend is required, the wire can be placed inside the wire groove 71, and then the first jaw 5 and the second jaw 6 are brought closer together. At this time, the arc-shaped pressure groove 63 will gradually cover the upper surface of the extrusion cone 7 to squeeze the wire, so that the wire bends around the trajectory of the wire groove 71. When the first jaw 5 and the second jaw 6 are completely overlapped, the arc-shaped pressure groove 63 just covers half of the area of ​​the extrusion cone 7. At this time, the wire completes a rapid 180-degree bend. The upper surface of the vertical surfaces 53 on both sides is lower than the axis of the extrusion cone 7, which ensures that after bending, the two ends of the wire are vertically downward along the surface of the vertical surface 53. The extrusion cone 7 has a structure that is smaller in the front and larger in the back, so the multiple wire grooves 71 on its surface are also different in size to meet different bending requirements.

[0036] If too much force is applied during use, a shearing force will occur between the turntable 3 and the mounting plate 21. At this time, the shearing force will act on the positioning pin 4. Due to the presence of the arc surface 41, when the shearing force is too large, the bottom of the positioning pin 4 will be forced to slide out of the positioning hole 31. At this time, the force of the second clamp handle 2 cannot act on the turntable 3, thereby preventing excessive squeezing force from causing indentations on the surface of the wire.

[0037] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A type of orthodontic fine wire forceps, comprising a first handle (1) and a second handle (2), characterized in that: The first clamp handle (1) is provided with a fixing block (11) at its end, and the surface of the fixing block (11) is provided with an installation platform (12). The second clamp handle (2) is provided with an installation plate (21) at its end, and the installation plate (21) is rotated and placed above the installation platform (12). A turntable (3) is installed between the installation platform (12) and the installation plate (21). An extension block (32) is provided on one side of the turntable (3). A second jaw (6) is installed at the end of the extension block (32). A first jaw (5) is installed at the end of the fixing block (11). The first jaw (5) and the second jaw (6) are symmetrically arranged. The front end of the inner side of the first jaw (5) is provided with a plane (51), and the front end of the inner side of the second jaw (6) is provided with a semi-circular curved surface (61). A compression cone rod (7) is installed on the surface of the first jaw (5).

2. The orthodontic fine wire forceps according to claim 1, characterized in that: The first jaw (5) has an installation groove (52) on its inner side. The extrusion cone (7) rotates inside the installation groove (52). The positions of the first jaw (5) corresponding to the installation groove (52) are set as vertical surfaces (53). The upper surface of the vertical surface (53) is lower than the rotation axis of the extrusion cone (7). The second jaw (6) has an arc-shaped pressure groove (63) adapted to the extrusion cone (7) on its surface.

3. The orthodontic fine wire forceps according to claim 2, characterized in that: The extrusion cone (7) has a tapered structure that is smaller at the front and larger at the back, and the surface of the extrusion cone (7) is uniformly provided with grooves (71).

4. The orthodontic fine wire forceps according to claim 3, characterized in that: The semicircular surface (61) has a semicircle at any cross section along the axis, and angle lines (62) are uniformly engraved on the surface of the semicircular surface (61).

5. The orthodontic fine wire forceps according to claim 1, characterized in that: The mounting platform (12), mounting plate (21) and turntable (3) are rotatably mounted together by a pin, and positioning holes (31) are symmetrically opened on the upper surface of the turntable (3).

6. The orthodontic fine wire forceps according to claim 5, characterized in that: The mounting plate (21) has symmetrical bosses (22) on its upper surface. The bosses (22) correspond to the positioning holes (31). A positioning pin (4) is slidably installed inside the bosses (22). The bottom outer edge of the positioning pin (4) is provided with an arc surface (41). The bottom of the positioning pin (4) is placed inside the positioning hole (31).

7. The orthodontic fine wire forceps according to claim 6, characterized in that: An extension rod (42) is provided at the top center of the positioning pin (4). The extension rod (42) extends beyond the upper surface of the boss (22). The two extension rods (42) are connected to a crossbar (43). A spring (8) is sleeved on the surface of the extension rod (42). The spring (8) is placed inside the boss (22). The spring (8) applies a pushing force to the positioning pin (4) towards the turntable (3).

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