Kirschner wire shaping scissors

Abstract

The utility model discloses a pair of kirschner wire shaping scissors. The pair of kirschner wire shaping scissors comprises a base, a shearing rod B and a bending part B, a positioning shaft is arranged on the surface of the base, a connecting block is hinged to the surface, located on the surface of the positioning shaft, of the base, and a shearing rod A is connected to one side of the connecting block; the shearing rod B is hinged to the surface of the positioning shaft and located on the surface of the connecting block. Through the specially designed shearing rod A, the shearing rod B, the bending part A, the bending part B and the bending part C on the shearing rod A, the shearing rod B and the bending part C, the kirschner wire can be accurately sheared, bent and sheared, the shaping efficiency and precision of the kirschner wire can be effectively improved, and different use requirements are met; the shearing rod A and the shearing rod B can be automatically rebounded to the initial positions after operation through a torsional spring in the rebounding mechanism, convenience and rapidness are achieved, the working efficiency is improved, and meanwhile the labor intensity of a user is reduced; a positioning structure composed of the rotating shaft, the limiting piece and the bolt can be used for limiting movement between the shearing rod A and the shearing rod B.

Description

Technical Field

[0001] This utility model relates to the technical field of Kirschner wire cutters, specifically Kirschner wire shaping cutters. Background Technology

[0002] Internal fixation implants in orthopedic surgery are typically secured with Kirschner wires. After fracture reduction, the inserted Kirschner wire tail needs to be bent and cut to retain its length outside the bone cortex or skin, preventing it from loosening and slipping into the bone. The usual practice is to bend the wire with forceps after fixation, and then cut it with Kirschner wire scissors, embedding it subcutaneously or leaving it outside the skin.

[0003] However, the entire process is prone to issues such as Kirschner wire retraction, loosening, and difficulty in controlling the bending angle and remaining length. More importantly, the fixed bone blocks are prone to loosening and displacement, making it difficult for the shaped Kirschner wires to meet high precision requirements. Furthermore, the operation is cumbersome, inefficient, and cannot well adapt to diverse usage needs. After each cutting operation, the cutting components need to be manually returned to their original positions, which not only increases the number of steps, wastes time, and reduces work efficiency, but also causes user fatigue and increases labor intensity due to frequent operation. Therefore, we have introduced Kirschner wire shaping shears. Utility Model Content

[0004] The purpose of this invention is to provide Kirschner wire shaping shears to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: Kirschner wire shaping shears, comprising: a base, a shearing rod B, and a bending part B;

[0006] The base has a positioning shaft on its surface, and a connecting block is hinged to the surface of the base on the surface of the positioning shaft. A shearing rod A is connected to one side of the connecting block.

[0007] The shearing rod B is hinged to the surface of the positioning shaft and located on the surface of the connecting block. A bending part A is provided on one side of the surface of the shearing rod B, and the bending part A and the shearing rod B are integrally formed.

[0008] The bending part B is provided on one side of the connecting block, and the connecting block and the bending part B are integrally formed. The other side of the surface of the shearing rod B is provided with a bending part C, and the bending part C and the shearing rod B are integrally formed. The surface of the base is provided with a positioning post, and the positioning post and the base are fixedly connected.

[0009] A spring-back mechanism is provided between shear rod A and shear rod B. The torsion spring of the spring-back mechanism drives shear rod A and shear rod B to move back to their initial positions to form a spring-back motion.

[0010] Preferably, the rebound mechanism includes a positioning pin that connects the surfaces of shear rod A and shear rod B, and a torsion spring is connected between the two sets of positioning pins, with both ends of the torsion spring connected to the surfaces of the positioning pins respectively.

[0011] Preferably, the surface of the shearing rod A is connected to a support column A, and the support column A penetrates the base; the surface of the shearing rod B is connected to a support column B, and the support column B penetrates the base.

[0012] Preferably, the base has limiting grooves on both sides of its surface for sliding support column A and support column B, and the limiting grooves are integrally formed with the base.

[0013] Preferably, the surface of the base is provided with a sliding groove for sliding the positioning shaft, and the sliding groove and the base are integrally formed.

[0014] Preferably, the inside of the bent portion C is provided with a through groove, and the through groove and the bent portion C are integrally formed, and the through groove facilitates the passage of Kirschner wires.

[0015] Preferably, the surface of the positioning post is located on the Kirschner wire connected between the bend A and the bend C.

[0016] Preferably, the surface of the shearing rod A is covered with an anti-slip sleeve A, and the surface of the shearing rod B is covered with an anti-slip sleeve B.

[0017] Preferably, a rotating shaft is connected to the surface of the shearing rod A, and a limiting member is provided on the surface of the rotating shaft. The limiting member extends to the top of the shearing rod B, and a bolt is connected to the other side surface of the limiting member. The bolt extends into the interior of the shearing rod B. By rotating the limiting member to the position of the anti-slip sleeve A on the surface of the shearing rod B, the bolt is screwed in, allowing the bolt to pass through the limiting member and enter the interior of the shearing rod B to form a fixation, so as to prevent accidental collision.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through specially designed shearing rod A, shearing rod B and bending parts A, B and C on them, can accurately perform shearing and bending operations on Kirschner wires, which can effectively improve the molding efficiency and accuracy of Kirschner wires and meet different usage needs. The through groove opened inside the bending part C provides a certain space for Kirschner wires during shearing and bending operations, which is convenient for operation and also helps to better control the shape changes of Kirschner wires.

[0019] The torsion spring in the rebound mechanism enables shearing rods A and B to automatically return to their initial positions after operation, which is convenient and quick, reduces the number of operation steps for users, improves work efficiency, and also reduces the labor intensity of users.

[0020] The positioning structure, consisting of a pivot, a limiting component, and bolts, can be used to restrict the movement between shear rod A and shear rod B, thus making it more convenient to use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of shear rod B and shear rod A when they are connected in three dimensions.

[0023] Figure 3 This is a schematic diagram of the structure of shear rod B and shear rod A when they rotate;

[0024] Figure 4 This is a top view of the structure of this utility model.

[0025] In the diagram: 1. Anti-slip sleeve A; 2. Shearing rod B; 3. Bending part C; 4. Base; 5. Shearing rod A; 6. Positioning post; 7. Support post A; 8. Bending part A; 9. Positioning shaft; 10. Bending part B; 11. Slide groove; 12. Limiting groove; 13. Support post B; 14. Anti-slip sleeve B; 15. Positioning pin; 16. Torsion spring; 17. Through groove; 18. Connecting block; 19. Kirschner wire; 20. Rotating shaft; 21. Limiting component; 22. Bolt. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-4 This utility model provides a technical solution: Kirschner wire shaping shear, including: a base 4, a positioning shaft 9 is provided on the surface of the base 4, a connecting block 18 is hinged to the surface of the base 4 on the surface of the positioning shaft 9, and a shearing rod A5 is connected to one side of the connecting block 18;

[0028] Shearing rod B2 is hinged to the surface of positioning shaft 9 and located on the surface of connecting block 18. A bending part A8 is provided on one side of the surface of shearing rod B2.

[0029] The bending part B10 is provided on one side of the connecting block 18, the bending part C3 is provided on the other side of the surface of the shearing rod B2, and the positioning post 6 is provided on the surface of the base 4.

[0030] A spring-back mechanism is provided between shearing rod A5 and shearing rod B2. The torsion spring 16 of the spring-back mechanism drives shearing rod A5 and shearing rod B2 to move back to their initial positions to form a spring-back motion.

[0031] The rebound mechanism includes a positioning pin 15 that connects the shear rod A5 and the shear rod B2. The torsion spring 16 is connected between the two sets of positioning pins 15, and the two ends of the torsion spring 16 are respectively connected to the surface of the positioning pin 15.

[0032] The surface of the shearing rod A5 is connected to a support column A7, and the support column A7 penetrates the base 4. The surface of the shearing rod B2 is connected to a support column B13, and the support column B13 penetrates the base 4.

[0033] The base 4 has limiting grooves 12 on both sides of its surface for sliding support columns A7 and B13, and the limiting grooves 12 and the base 4 are integrally formed.

[0034] The surface of the base 4 is provided with a sliding groove 11 for sliding the positioning shaft 9, and the sliding groove 11 and the base 4 are integrally formed.

[0035] The bending portion C3 has a through groove 17 inside, and the through groove 17 and the bending portion C3 are integrally formed. The through groove 17 facilitates the passage of Kirschner wires 19.

[0036] The surface of the positioning post 6 is located at the Kirschner wire 19 connecting the bending part A8 and the bending part C3.

[0037] The surface of the shearing rod A5 is covered with an anti-slip sleeve A1, and the surface of the shearing rod B2 is covered with an anti-slip sleeve B14.

[0038] The shearing rod A5 is connected to a rotating shaft 20. The rotating shaft 20 is provided with a limiting member 21, which extends to the top of the shearing rod B2. The other side of the limiting member 21 is connected to a bolt 22, which extends into the interior of the shearing rod B2. By rotating the limiting member 21 to the position of the anti-slip sleeve A1 on the surface of the shearing rod B2, the bolt 22 is screwed in, allowing the bolt 22 to pass through the limiting member 21 and enter the interior of the shearing rod B2, thus forming a fixed position to prevent accidental collision.

[0039] Specifically, in use, the Kirschner wire 19 is passed through the through groove 17 inside the bent portion C3, so that one end of the Kirschner wire 19 is located on the lower surface of the positioning post 6 (e.g., Figure 3(As shown), the user then holds the anti-slip sleeve A1 on the surface of shearing rod A5 and the anti-slip sleeve B14 on the surface of shearing rod B2, applying pressure with their hand to rotate shearing rod A5 and shearing rod B2 relative to each other around the positioning axis 9 (the torsion spring 16 will be compressed). At this time, the bent part A8 on shearing rod B2 and the bent part B10 on connecting block 18 approach each other, thereby bending the Kirschner wire 19. The bending arc angle is approximately 180° (as shown). Figure 3 As shown), the bent part C3 on one side of the shearing rod B2 performs a shearing operation on the Kirschner wire 19 on the surface of the positioning post 6.

[0040] When the hand is released, the spring mechanism set between the shearing rod A5 and the shearing rod B2, namely the torsion spring 16 connected between the two sets of positioning pins 15, takes effect. The torsion spring 16 uses its own elastic restoring force to drive the shearing rod A5 and the shearing rod B2 to move back to the initial position, thereby achieving springback and preparing for the next shearing operation.

[0041] During the movement of shearing rods A5 and B2, the support columns A7 and B13 connected to their surfaces slide within the limiting grooves 12 opened on both sides of the base 4, which serve to guide and stabilize the structure, ensuring the smoothness of the shearing and rebound process. At the same time, the sliding groove 11 on the surface of the base 4 is used to slide the positioning shaft 9, ensuring the relative fixation of the position of the positioning shaft 9, thereby maintaining the stability of the entire device structure.

[0042] The anti-slip sleeve A1 on the surface of shearing rod B2 and the anti-slip sleeve B14 on the surface of shearing rod A5 increase the friction between the hand and the shearing rod, making it easier for the user to operate. In addition, the structure of the rotating shaft 20, the limiting member 21 and the bolt 22 connected to the surface of shearing rod A5 can be used to limit the movement between shearing rod A5 and shearing rod B2, thus making it more convenient to use.

[0043] One end of the Kirschner wire 19, where it is inserted into the bone surface, is pointed. The tail of the Kirschner wire 19 is bent or cut as described above (e.g., Figure 3 (Status shown).

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A trocar punch, characterized in that The utility model relates to a cutting bar A (5) is connected to one side of the connecting block (18), and the cutting bar B (2) is hinged to the surface of the locating shaft (9) on the surface of the connecting block (18), and the surface of the cutting bar B (2) is provided with a bending part A (8) on one side. The utility model relates to a bending part B (10) is arranged on one side of the connecting block (18), and the surface of the cutting bar B (2) is provided with a bending part C (3) on the other side, and the surface of the base (4) is provided with a locating column (6). The utility model relates to a resilient mechanism arranged between the cutting bar A (5) and the cutting bar B (2), and the torsional spring (16) of the resilient mechanism drives the cutting bar A (5) and the cutting bar B (2) to move to the initial position to form resilience. The utility model relates to a resilient mechanism arranged between the cutting bar A (5) and the cutting bar B (2), and the torsional spring (16) of the resilient mechanism drives the cutting bar A (5) and the cutting bar B (2) to move to the initial position to form resilience. The utility model relates to a resilient mechanism arranged between the cutting bar A (5) and the cutting bar B (2), and the torsional spring (16) of the resilient mechanism drives the cutting bar A (5) and the cutting bar B (2) to move to the initial position to form resilience.

2. The K-wire plasticity scissors according to claim 1, characterized in that, The utility model relates to a resilient mechanism arranged between the cutting bar A (5) and the cutting bar B (2), and the torsional spring (16) of the resilient mechanism drives the cutting bar A (5) and the cutting bar B (2) to move to the initial position to form resilience.

3. The K-wire plasticity scissors according to claim 1, characterized in that, The utility model relates to a resilient mechanism arranged between the cutting bar A (5) and the cutting bar B (2), and the torsional spring (16) of the resilient mechanism drives the cutting bar A (5) and the cutting bar B (2) to move to the initial position to form resilience.

4. The K-wire plasticity shears according to claim 3, wherein, The utility model relates to a resilient mechanism arranged between the cutting bar A (5) and the cutting bar B (2), and the torsional spring (16) of the resilient mechanism drives the cutting bar A (5) and the cutting bar B (2) to move to the initial position to form resilience.

5. The K-wire plasticity shears according to claim 1, wherein, The utility model relates to a resilient mechanism arranged between the cutting bar A (5) and the cutting bar B (2), and the torsional spring (16) of the resilient mechanism drives the cutting bar A (5) and the cutting bar B (2) to move to the initial position to form resilience.

6. The K-wire plasticity shears according to claim 1, wherein, The utility model relates to a resilient mechanism arranged between the cutting bar A (5) and the cutting bar B (2), and the torsional spring (16) of the resilient mechanism drives the cutting bar A (5) and the cutting bar B (2) to move to the initial position to form resilience.

7. The K-wire plasticity shears according to claim 1, wherein, The utility model relates to a resilient mechanism arranged between the cutting bar A (5) and the cutting bar B (2), and the torsional spring (16) of the resilient mechanism drives the cutting bar A (5) and the cutting bar B (2) to move to the initial position to form resilience.

8. The K-wire plasticity shears according to claim 1, wherein, ​ 9. The K-wire plasticity shears according to claim 1, wherein, ​

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