A special pliers for free traction hook

Abstract

The present invention discloses a special pliers for free traction hooks, belonging to the technical field of medical supplies. A first clamp on the first rod is provided with a groove for clamping the traction hook; a second clamp on the second rod is provided with a force-applying part, which is a V-shaped structure formed by two inclined surfaces; the sharp edge of the V-shaped knot is opposite to the groove; an elastic clamping part is also provided between the first clamp and the first rod; the first clamp is mainly composed of a left clamp and a right clamp, wherein the groove is composed of two opposite groove surfaces at the top of the left clamp and the right clamp; the elastic clamping part includes a first support rod and a second support rod, the top ends of the first support rod and the second support rod are fixedly connected to the bottom ends of the left clamp and the right clamp respectively; the bottom ends of the first support rod and the second support are fixedly connected to the same position at the top end of the first rod. The present invention enables the free traction hook to be completely, conveniently and quickly removed from the orthodontic wire, which can save time and avoid the waste of the free traction hook.

Description

Technical Field

[0001] The invention relates to the technical field of medical supplies, in particular to a pair of special pliers for free traction hooks. Background Art

[0002] Free traction hooks are used for orthodontic treatment and are suitable for different ethnic groups, different symptoms, and different stages of correction. When used, the free traction hook is fixed to the orthodontic wire, and a slight but persistent force is applied to the orthodontic wire using auxiliary materials such as elastic bands or rubber bands. This slowly moves the teeth and adjusts their position to restore the correct occlusal relationship, thus achieving correction. They are generally installed on the orthodontic wire and are sometimes used in conjunction with orthodontic anchorage pins and invisible braces. Free traction hook pliers are an indispensable tool when using free traction hooks for treatment.

[0003] In the existing technology, the free traction hook itself is very small and not easy to be placed in the insertion slot; and the free traction hook is easy to move back and forth after being placed in the insertion slot, which brings great inconvenience to the implantation of the free traction hook; in addition, since different manufacturers have different standards for the neck of the free traction hook and there are errors in the production of the traction hook, there are differences in the size of the neck of the free traction hook, which may cause some free traction hooks to be unable to be placed in the insertion slot and cannot be used, resulting in a waste of resources.

[0004] In the existing technology, the traction hook insertion slot of the free traction hook forceps can only accommodate one free traction hook, while ordinary patients usually need 2 to 3 free traction hooks. Clamping the free traction hook during surgery easily wastes time, increases the patient's dependence time, and brings a bad feeling to the patient. Summary of the Invention

[0005] The purpose of the present invention is to provide a special pliers for free traction hooks, which can enable the free traction hooks to be completely, conveniently and quickly removed from the orthodontic wire, thereby saving time and avoiding waste of the free traction hooks.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A pliers for free-drawing hooks, comprising a first rod and a second rod hingedly connected by a pin; a first clamp on the first rod is provided with a groove for clamping the traction hook; a second clamp on the second rod is provided with a force-applying portion, which is a V-shaped structure formed by two inclined surfaces; the sharp edge of the V-shaped hook faces the groove;

[0008] An elastic clamping portion is further provided between the first clamping head and the first rod; the first clamping head mainly comprises a left clamping portion and a right clamping portion, wherein the groove is formed by two opposite groove surfaces at the top of the left clamping portion and the top of the right clamping portion; the elastic clamping portion comprises a first support rod and a second support rod with toughness, the top ends of the first support rod and the second support rod being fixedly connected to the bottom ends of the left clamping portion and the right clamping portion respectively; the bottom ends of the first support rod and the second support rod are fixedly connected to the same position at the top end of the first rod;

[0009] The middle positions of the first support rod and the second support rod are both bent portions, and the bent portions of the first support rod and the second support rod intersect.

[0010] Furthermore, the groove surface is provided with thin protrusions arranged sequentially from top to bottom and parallel to each other.

[0011] Furthermore, the tops of the left clamping part and the right clamping part are both provided with fixing tips, and the tips of the two fixing tips are facing each other.

[0012] Furthermore, there is a spacing greater than zero between the groove surfaces; platforms are provided below the groove surfaces of the left and right clamping parts, and when the two platforms are close together, the spacing between the groove surfaces is the smallest; springs are provided on the upper surfaces of the platforms, and the axes of the springs are perpendicular to the upper surfaces of the platforms; a baffle is provided on the top of the springs.

[0013] Furthermore, a ball joint structure is provided between the spring and the baffle.

[0014] Furthermore, a baffle groove is provided below the V-shaped structure of the second clamp; one side of the baffle extends toward the baffle groove and has the freedom to move up and down in the baffle groove.

[0015] Furthermore, a limit plate hole is provided below the baffle groove; a limit plate is provided in the limit plate hole, and the limit plate can move freely along the axial direction of the limit plate hole; a threaded hole is provided on one side of the limit plate hole, and the threaded hole passes through the limit plate hole; a locking knob is provided in the threaded hole and is threadedly connected to it, and the screw of the locking knob passes through the threaded hole and rests on the limit plate.

[0016] Furthermore, a square hole penetrating to the baffle groove is provided on the top of the second clamp.

[0017] The beneficial effects of the present invention are:

[0018] 1. The bottom end of the clamping part is fixed. Due to the effect of elastic force, the free traction hook can be easily placed in the clamping part without displacement, which facilitates the implantation of the free traction hook and reduces the time required for orthodontic surgery.

[0019] 2. The opening size of the clamping part is adjustable (left clamping part and right clamping part), which is suitable for free traction hooks of all specifications and models from all manufacturers and those with errors in production but which do not affect the treatment effect.

[0020] 3. Spring propulsion device: Place the free traction hook into the clamping part. The back of the free traction hook's neck contacts the spring clamping part baffle, providing forward force for the traction hook. After the first free traction hook is implanted, the thrust of the device will cause the subsequent free traction hooks to continue to move forward, reducing the time spent manually pushing the traction hook forward while avoiding contamination. The baffle at the front end of the propulsion device not only allows the free traction hook to be pushed forward stably, but also cooperates with the force-applying part to cut the orthodontic wire flush.

[0021] 4. The free traction hook removal part is composed of two mutually symmetrical semi-conical surfaces. When in use, the left and right semi-conical surfaces are respectively clamped on the left and right sides of the lower end of the free traction hook, and force is applied to the middle part to separate the originally clamped free traction hook. The free traction hook can be easily opened, so that the free traction hook can be completely, conveniently and quickly removed from the orthodontic wire, which can save time, avoid waste of the free traction hook, and prevent the free traction hook from falling.

[0022] 5. The height of the limit plate can be adjusted according to the size of the free traction hook to determine the clamping force.

[0023] 6. The clamping part is 3mm long and can hold 1 to 3 free traction hooks at the same time, meeting the needs of most orthodontic patients and avoiding the waste of time in re-clamping the free traction hooks during surgery.

[0024] 7. The side ends of the clamping part are provided with parallel thin strip protrusions, which make the clamping of the free traction hook more stable and can also fix the top of the spring propulsion device to facilitate the placement of the free traction hook. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of an embodiment of the present invention;

[0026] Figure 2 yes Figure 1 Schematic diagram of the top structure of the first rod;

[0027] Figure 3 yes Figure 1 Schematic diagram of the top structure of the second rod;

[0028] Figure 4 It is a structural diagram of a free traction hook.

[0029] In the figure: 1. second rod, 2. first rod, 3. pin, 4. spring propulsion device, 5. elastic clamping part, 6. fixing part (free traction hook removal part), 7. limit plate, 8. force applying part, 4-1. spring, 4-2. baffle, 5-1. bending part, 9. right clamping part, 10. left clamping part, 11. thin protrusion, 12. locking knob, 13. baffle groove, 14. square hole. DETAILED DESCRIPTION

[0030] The following is a clear and complete description of the technical solutions in the embodiments of the present invention with reference to the accompanying drawings and examples. However, the embodiments described herein are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0031] A pliers for free-drawing hooks, comprising a first rod and a second rod hingedly connected by a pin; a first clamp on the first rod is provided with a groove for clamping the traction hook; a second clamp on the second rod is provided with a force-applying portion, which is a V-shaped structure formed by two inclined surfaces; the sharp edge of the V-shaped hook faces the groove;

[0032] An elastic clamping portion is further provided between the first clamping head and the first rod; the first clamping head mainly comprises a left clamping portion and a right clamping portion, wherein the groove is formed by two opposite groove surfaces at the top of the left clamping portion and the top of the right clamping portion; the elastic clamping portion comprises a first support rod and a second support rod with toughness, the top ends of the first support rod and the second support rod being fixedly connected to the bottom ends of the left clamping portion and the right clamping portion respectively; the bottom ends of the first support rod and the second support rod are fixedly connected to the same position at the top end of the first rod;

[0033] The middle positions of the first support rod and the second support rod are both bent portions, and the bent portions of the first support rod and the second support rod intersect.

[0034] Furthermore, the groove surface is provided with thin protrusions arranged sequentially from top to bottom and parallel to each other.

[0035] Furthermore, the tops of the left clamping part and the right clamping part are both provided with fixing tips, and the tips of the two fixing tips are facing each other.

[0036] Furthermore, there is a spacing greater than zero between the groove surfaces; platforms are provided below the groove surfaces of the left and right clamping parts, and when the two platforms are close together, the spacing between the groove surfaces is the smallest; springs are provided on the upper surfaces of the platforms, and the axes of the springs are perpendicular to the upper surfaces of the platforms; a baffle is provided on the top of the springs.

[0037] Furthermore, a ball joint structure is provided between the spring and the baffle.

[0038] Furthermore, a baffle groove is provided below the V-shaped structure of the second clamp; one side of the baffle extends toward the baffle groove and has the freedom to move up and down in the baffle groove.

[0039] Furthermore, a limit plate hole is provided below the baffle groove; a limit plate is provided in the limit plate hole, and the limit plate can move freely along the axial direction of the limit plate hole; a threaded hole is provided on one side of the limit plate hole, and the threaded hole passes through the limit plate hole; a locking knob is provided in the threaded hole and is threadedly connected to it, and the screw of the locking knob passes through the threaded hole and rests on the limit plate.

[0040] Furthermore, a square hole penetrating to the baffle groove is provided on the top of the second clamp.

[0041] The structural features of this embodiment are described in detail below:

[0042] Reference Figures 1 to 3 , the structural features of this embodiment are:

[0043] The elastic clamping part has a fixed bottom, and the two parts interlock to control the size of the opening of the elastic clamping part. By pressing the elastic clamping part inward, the free traction hook can be inserted more conveniently and quickly. At the same time, the elastic force of the clamping part can clamp the free traction hook tightly, preventing it from shifting. Moreover, the opening size is adjustable, which can accommodate free traction hooks of all neck sizes. The side ends of the clamping part have parallel thin protrusions to ensure a more secure grip on the free traction hook. The clamping part is longer than that of ordinary free traction hook clamps, and can accommodate one to three free traction hooks according to the needs of different patients.

[0044] The lower rear end of the elastic clamping part is equipped with a spring propulsion device (composed of a spring and a baffle). After the first free traction hook is implanted, the thrust of the device will cause subsequent free traction hooks to continue to move forward, reducing the time spent manually pushing the traction hooks forward while avoiding contamination. The baffle at the front end of the propulsion device not only ensures the free traction hooks are steadily propelled forward, but also cooperates with the force-applying part to cut the orthodontic wire flush. At the same time, the baffle can be rotated via a ball joint structure, and after the spring is compressed, the baffle is clamped on the protrusion of the clamping part, facilitating the placement of the free traction hook.

[0045] A square hole is provided at the top of the force-applying part, which can be used to insert the orthodontic wire and then cooperate with the front end baffle of the spring to cut it off.

[0046] The free traction hook removal part is composed of two symmetrical semi-conical shapes. The removal part can be moved by the elastic clamping part to open the free traction hook so that the free traction hook can be completely and quickly removed from the orthodontic wire. The structure of the free traction hook is as follows: Figure 4, which can save time and avoid the waste of free traction hooks; at the same time, the device (fixed tip) at the removal part can also prevent the free traction hook from falling.

[0047] The limit plate can be adjusted in height according to the size of the free traction hook. By adjusting the knob on the side, when the clamp reaches the height of the limit plate, the upper part of the free traction hook clamp will stop due to the obstruction of the limit plate, thereby determining the size of the clamping force.

[0048] The limit plate and the force-applying part have a small hole for placing the orthodontic wire. The length of the spring in its natural state is flush with the lower end of the force-applying part.

[0049] The following is a principle explanation of the usage process of this embodiment:

[0050] First, the orthodontic wire required for the orthodontic process is determined in length and placed into the square hole 14. The first and second rods move, and the orthodontic wire is cut straight by the baffle at the front end of the spring. After the spring is compressed and the front end is clamped on the thin protrusion on the groove surface of the clamping part, 3-4 free traction hooks to be used are clamped in the groove. The limit plate is adjusted to an appropriate height, and the free traction hooks are clamped. If the position of the free traction hook needs to be changed after the correction is completed or during the correction process, the left and right fixing tips can be clamped on the left and right sides of the lower end of the free traction hook respectively, and force can be applied to the middle part to separate the originally clamped free traction hooks, thereby conveniently and quickly completing the clamping and replacement of the free traction hooks.

Claims

1. A pliers for free traction hook, comprising a first rod and a second rod hingedly connected by a pin; characterized in that: A groove for clamping the traction hook is provided on the first clamp on the first rod; a force-applying portion is provided on the second clamp on the second rod, and the force-applying portion is a V-shaped structure formed by two inclined surfaces; the sharp edge of the V-shaped hook faces the groove; An elastic clamping portion is further provided between the first clamping head and the first rod; the first clamping head mainly comprises a left clamping portion and a right clamping portion, wherein the groove is formed by two opposite groove surfaces at the top of the left clamping portion and the top of the right clamping portion; the elastic clamping portion comprises a first support rod and a second support rod with toughness, the top ends of the first support rod and the second support rod being fixedly connected to the bottom ends of the left clamping portion and the right clamping portion respectively; the bottom ends of the first support rod and the second support rod are fixedly connected to the same position at the top end of the first rod; The middle positions of the first support rod and the second support rod are both bent portions, and the bent portions of the first support rod and the second support rod intersect; There is a spacing greater than zero between the groove surfaces; platforms are provided below the groove surfaces of the left clamping part and the right clamping part, and when the two platforms are close together, the spacing between the groove surfaces is the smallest; springs are also provided on the upper surfaces of the platforms, and the axes of the springs are perpendicular to the upper surfaces of the platforms; a baffle is provided on the top of the springs.

2. A special pliers for free traction hook according to claim 1, characterized in that: The groove surface is provided with thin protrusions arranged sequentially from top to bottom and parallel to each other.

3. The special pliers for free traction hook according to claim 1, characterized in that: The tops of the left clamping part and the right clamping part are both provided with fixing tips, and the tips of the two fixing tips are facing each other.

4. The special pliers for free traction hook according to claim 1, characterized in that: A ball joint structure is also provided between the spring and the baffle.

5. The special pliers for free traction hook according to claim 1, characterized in that: A baffle groove is provided below the V-shaped structure of the second clamping head; one side of the baffle extends toward the baffle groove and has the freedom to move up and down in the baffle groove.

6. The special pliers for free traction hook according to claim 5, characterized in that: A limit plate hole is also provided below the baffle groove; a limit plate is provided in the limit plate hole, and the limit plate can move freely along the axial direction of the limit plate hole; a threaded hole is provided on one side of the limit plate hole, and the threaded hole passes through the limit plate hole; a locking knob is provided in the threaded hole and is threadedly connected to it, and the screw of the locking knob passes through the threaded hole and rests on the limit plate.

7. The special pliers for free traction hook according to claim 5, characterized in that: A square hole penetrating to the baffle groove is provided on the top of the second clamp.

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