Internal fixation kirschner wire for orthopedics department

Abstract

The utility model relates to the field of medical instruments, and discloses an orthopedic internal fixation kirschner wire which comprises a wire body, a needle point is arranged on the left side of the wire body, a thread-shaped groove is formed in the outer portion of the left side of the wire body, an internal thread groove is formed in the wire body, and a connecting assembly for fixing is arranged in the internal thread groove. A protective cap is fixedly connected to the right side of the connecting assembly, a fixing block is fixedly connected to the right side of the protective cap, a distinguishing block is arranged in the fixing block, a protective layer is fixedly connected to the exterior of the needle body, the connecting assembly comprises an external threaded rod, and the external thread of the external threaded rod is connected to the interior of the internal threaded groove. According to the kirschner wire, the protection cap is matched and screwed with the external threaded rod at the tail of the wire body through the internal threaded groove in the protection cap, and the fixing block has an auxiliary fixing function, so that the stability of the whole kirschner wire in a skeleton is greatly improved, and the tail of the wire body is prevented from loosening and displacing.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to an orthopedic internal fixation Kirschner wire. Background Art

[0002] Kirschner wires are mainly used to assist in the reduction and fixation of fractures. Due to their advantages such as simple operation, flexibility, small trauma, and low price, they are widely used in orthopedic clinics. The existing Kirschner wires are slender needle-shaped, can be used alone or in combination with other instruments, and are commonly used for the temporary fixation of fracture fragments or the long-term fixation of smaller fracture fragments in orthopedic surgeries. In addition, ordinary Kirschner wires are smooth columnar structures on the surface, with relatively small holding force on fracture fragments, and are prone to loosening, displacement and other situations.

[0003] After retrieval, a Kirschner wire in the field of medical devices with the publication number CN214805269U includes a pressurizing guide pin, a needle tip and a sphere module. A needle hole is provided in the middle of the sphere module. One end of the pressurizing guide pin passes through the needle hole and is connected to the sphere module. The sphere module is located on the outer edge of the pressurizing guide pin. One end of the pressurizing guide pin is provided with a threaded portion, the threaded portion is located on one side of the sphere module, and the top of the threaded portion is connected to the needle tip, and the needle tip is conical. An annular notch is provided on the outer wall of the sphere module. The other end of the pressurizing guide pin is provided with a triangular prism portion. The design of the sphere module of the utility model can control the depth of needle insertion, prevent nerve, blood vessel and important organ injuries caused by excessive needle insertion, and improve safety; the threaded portion design can enhance the holding force on the bone; and further pressurization or distraction operations can be performed on the fracture ends in cooperation with corresponding tool forceps. According to different diameters, total lengths and lengths of the threaded portions of the Kirschner wires, different models are provided to meet various clinical needs.

[0004] The above-mentioned patent mentions that "the design of the sphere module can control the depth of needle insertion, prevent nerve, blood vessel and important organ injuries caused by excessive needle insertion, and improve safety; the threaded portion design can enhance the holding force on the bone; and further pressurization or distraction operations can be performed on the fracture ends in cooperation with corresponding tool forceps". However, in the specific use process, the tail of the Kirschner wire will protrude outside the skin, which is easily contaminated by bacteria, dust, etc., thereby increasing the risk of infection. Therefore, in view of the above problems, an orthopedic internal fixation Kirschner wire is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose an orthopedic internal fixation Kirschner wire, aiming to improve the problem that the tail of the Kirschner wire cannot be limited and protected in the prior art.

[0006] To achieve the above object, the present utility model provides the following technical solutions: An orthopedic internal fixation Kirschner wire, comprising a needle body, a needle tip is provided on the left side of the needle body, a threaded groove is provided on the outer side of the left side of the needle body, an internal threaded groove is provided inside the needle body, a connecting component for fixation is provided inside the internal threaded groove, a protective cap is fixedly connected to the right side of the connecting component, a fixing block is fixedly connected to the right side of the protective cap, a discrimination block is provided inside the fixing block, and a protective layer is fixedly connected to the outer side of the needle body.

[0007] As a further description of the above technical solution:

[0008] The connecting component includes an external threaded rod, and the outer side of the external threaded rod is threadedly connected inside the internal threaded groove.

[0009] As a further description of the above technical solution:

[0010] The material of the needle body is titanium alloy material, and the length of the needle tip is 1.2 mm.

[0011] As a further description of the above technical solution:

[0012] The material of the protective cap is silicone material.

[0013] As a further description of the above technical solution:

[0014] The material of the fixing block is transparent silicone material.

[0015] As a further description of the above technical solution:

[0016] The outer side of the external threaded rod is threadedly connected inside the needle body.

[0017] As a further description of the above technical solution:

[0018] The material of the protective layer is calcium phosphate material.

[0019] As a further description of the above technical solution:

[0020] The right side of the external threaded rod is fixedly connected to the left side of the fixing block.

[0021] Compared with the prior art, the present utility model has the following beneficial effects:

[0022] 1. In the present utility model, the protective cap is mutually matched and tightened with the external threaded rod at the tail of the needle body through the internal threaded groove inside, and with the auxiliary fixing effect of the fixing block, the overall stability of the Kirschner wire in the bone is greatly improved, preventing loosening and displacement at the tail of the needle body.

[0023] 2. In the present utility model, the identification block facilitates medical staff to quickly identify information such as the model and specification of the Kirschner wire, improving the efficiency and accuracy of surgical operations. The protective layer covers the surface of the needle body, reducing the friction between the needle body and tissues, and playing a certain antibacterial and antiseptic role, protecting the patient's body from infection, being beneficial to the patient's postoperative recovery, and reducing the occurrence of complications. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 FIG. is a perspective view of an orthopedic internal fixation Kirschner wire proposed by the present utility model;

[0025] Figure 2 FIG. is a schematic structural view of the needle body of an orthopedic internal fixation Kirschner wire proposed by the present utility model;

[0026] Figure 3 FIG. is a schematic structural view of the fixing block of an orthopedic internal fixation Kirschner wire proposed by the present utility model;

[0027] Figure 4 is Figure 1 an enlarged view of part A in

[0028] Figure 5 is Figure 2 an enlarged view of part B in

[0029] LEGEND DESCRIPTION:

[0030] 1. Needle body; 2. Needle tip; 3. Threaded groove; 4. Internal threaded groove; 5. External threaded rod; 6. Protective cap; 7. Fixing block; 8. Identification block; 9. Protective layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Refer to Figure 1 and Figure 4As shown in the figure, an embodiment provided by the present utility model is an orthopedic internal fixation Kirschner wire, which includes a needle body 1, which is the main part of the entire orthopedic internal fixation Kirschner wire and is made of a strong titanium alloy material. This material has good biocompatibility and high strength, can stably play a fixation role in the human body, and is not easy to cause adverse reactions such as allergies. A needle tip 2 is provided on the left side of the needle body 1, which can easily penetrate the bone tissue, reducing the pain and damage caused to the patient during insertion. The material of the needle body 1 is titanium alloy material, the length of the needle tip 2 is 1.2 mm, and a threaded groove 3 is provided on the outer side of the left side of the needle body 1, increasing the friction between the needle body 1 and the bone, making the Kirschner wire more stable in the bone and not easy to displace.

[0033] Referring to Figure 2 and Figure 3 , Figure 5 As shown, an internal threaded groove 4 is provided inside the needle body 1. The internal threaded groove 4 is for installing and connecting an external threaded rod 5. A connecting component for fixation is provided inside the internal threaded groove 4. The connecting component includes an external threaded rod 5. The right side of the external threaded rod 5 is fixedly connected to the left side of a fixing block 7. The external thread of the external threaded rod 5 is connected to the inside of the needle body 1, and the external thread of the external threaded rod 5 is connected to the inside of the internal threaded groove 4. A protective cap 6 is fixedly connected to the right side of the connecting component. It has good elasticity and flexibility, mainly for protecting the tail of the needle body 1, preventing bacteria and pollutants from the outside from entering the inside of the needle body 1 and causing infection. At the same time, the protective cap 6 can also reduce the stimulation of the tail of the needle body 1 to the surrounding tissues and improve the comfort of the patient. The material of the protective cap 6 is silicone material.

[0034] Referring to Figures 1 to 2 As shown, a fixing block 7 is fixedly connected to the right side of the protective cap 6. A distinguishing block 8 is provided inside the fixing block 7. The fixing block 7 is for installing and connecting the distinguishing block 8. The distinguishing block 8 is convenient for medical staff to quickly identify information such as the model and specification of the Kirschner wire. The distinguishing block 8 can be distinguished by different colors, shapes or marks for different Kirschner wires, enabling medical staff to quickly and accurately select the appropriate Kirschner wire during the operation. A protective layer 9 is fixedly connected to the outside of the needle body 1. The material of the protective layer 9 is calcium phosphate material. The protective layer 9 plays a certain antibacterial and anti-corrosion role, protecting the patient's body from infection. Calcium phosphate material has good biocompatibility and osteoconductivity, and can promote bone growth and repair.

[0035] Working principle: When in use, first insert the needle body 1 into the part of the bone that needs to be fixed through the needle tip 2. The threaded groove 3 on the needle body 1 can increase the contact stability with the bone to ensure the fixation effect.

[0036] After the needle body 1 is inserted in place, the protection of the tail of the needle body 1 is mainly achieved by the cooperation of the protective cap 6 and the fixing block 7. The external threaded rod 5 fixed on the left side of the protective cap 6 cooperates with the internal threaded groove 4 opened inside the needle body 1. By rotating the protective cap 6, it is gradually tightened along the external threaded rod 5 until it is firmly fixed to the tail of the needle body 1.

[0037] The fixing block 7 and the identification block 8 play the roles of assisting in fixing and identifying. The fixing block 7 can increase the stability of the connection between the protective cap 6 and the tail of the needle body 1, preventing the protective cap 6 from loosening accidentally. The identification block 8 facilitates medical staff to quickly identify information such as the model and specification of the Kirschner wire.

[0038] Meanwhile, the protective layer 9 covers the surface of the needle body 1, which can not only reduce the friction between the needle body 1 and tissues, but also play a certain antibacterial and antiseptic role to protect the patient's body from infection.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An orthopedic internal fixation Kirschner wire, comprising a needle body (1), characterized in that: The left side of the needle body (1) is provided with a needle tip (2). A threaded groove (3) is formed on the outer side of the left side of the needle body (1). An internal threaded groove (4) is formed inside the needle body (1). A connection component for fixation is arranged inside the internal threaded groove (4). The right side of the connection component is fixedly connected to a protective cap (6). The right side of the protective cap (6) is fixedly connected to a fixing block (7). A discrimination block (8) is arranged inside the fixing block (7). A protective layer (9) is fixedly connected to the outer side of the needle body (1).

2. An orthopedic internal fixation Kirschner wire according to claim 1, characterized in that: The connection component includes an external threaded rod (5), and the external thread of the external threaded rod (5) is connected inside the internal threaded groove (4).

3. An orthopedic internal fixation Kirschner wire according to claim 1, characterized in that: The material of the needle body (1) is titanium alloy, and the length of the needle tip (2) is 1.2 mm.

4. An orthopedic internal fixation Kirschner wire according to claim 1, characterized in that: The material of the protective cap (6) is silica gel.

5. An orthopedic internal fixation Kirschner wire according to claim 1, characterized in that: The material of the fixing block (7) is transparent silica gel.

6. The orthopedic internal fixation Kirschner wire according to claim 2, characterized in that: The external thread of the external threaded rod (5) is connected inside the needle body (1).

7. An orthopedic internal fixation Kirschner wire according to claim 1, characterized in that: The material of the protective layer (9) is calcium phosphate.

8. An orthopedic internal fixation Kirschner wire according to claim 2, characterized in that: The right side of the external threaded rod (5) is fixedly connected to the left side of the fixing block (7).

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