CN214805269U - Kirschner wire - Google Patents

Abstract

The utility model relates to a kirschner wire, which relates to the field of medical appliances, and comprises a pressurizing guide pin, a needle head and a ball module, wherein the middle part of the ball module is provided with a needle hole, one end of the pressurizing guide pin passes through the needle hole and is connected with the ball module, and the ball module is positioned at the outer edge of the pressurizing guide pin; one end of the pressurizing guide pin is provided with a threaded part, the threaded part is positioned on one side of the sphere module, the top end of the threaded part is connected with the needle head, and the needle head is conical; the outer wall of the sphere module is provided with an annular gap; the other end of the pressurizing and guiding needle is provided with a triangular prism part. The utility model has the advantages that the design of the sphere module can control the needle insertion depth, prevent the damage of nerves, blood vessels and important organs caused by too deep needle insertion, and improve the safety; the design of the thread part can enhance the holding force on bones; the fracture broken end can be further pressed or expanded by matching with a corresponding tool clamp. According to the difference of the diameter, the total length and the length of the thread part of the Kirschner wire, different models are provided to adapt to various clinical requirements.

Description

Kirschner wire

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a kirschner wire.

Background

The kirschner wire is mainly used for assisting the reduction and fixation of fracture, and is widely applied to orthopedics clinic because of the advantages of simple and flexible operation, small wound, low price and the like. The existing kirschner wire is in a slender needle shape, can be used independently, can also be used together with other instruments, and is commonly used for temporary fixation of fracture blocks in orthopedic surgery or long-term fixation of smaller fracture blocks. Because the common kirschner wire has no depth limiting device, the over-deep insertion of the needle is easy to occur, and blood vessels, nerves or important organs can be damaged, thereby causing serious consequences. In addition, the common kirschner wire is a cylindrical structure with a smooth surface, the holding force on a fracture block is small, the fracture block is easy to loosen and shift, the fracture reduction is lost, and even the kirschner wire drifts to damage important organs.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a kirschner wire for solve above-mentioned technical problem, and show the security that strengthens the kirschner wire and use.

The utility model adopts the technical scheme as follows:

a pin relates to a Kirschner wire, which comprises a pressurizing and guiding pin, a needle head and a ball module, wherein the middle part of the ball module is provided with a needle hole, one end of the pressurizing and guiding pin penetrates through the needle hole and is connected with the ball module, and the ball module is positioned at the outer edge of the pressurizing and guiding pin; one end of the pressurizing guide pin is provided with a threaded part, the threaded part is positioned on one side of the sphere module, the top end of the threaded part is connected with the needle head, and the needle head is conical; an annular gap is arranged on the outer wall of the sphere module; and the other end of the pressurizing and guiding needle is provided with a triangular prism part.

As a further preference, the sphere module includes at least one sphere structure connecting the pressurization guide pin and the threaded portion.

As a further preference, the sphere module includes two sphere structures, the two sphere structures are a first sphere and a second sphere, and the annular notch is located at an outer edge of one end of the first sphere close to the second sphere.

Preferably, an edge of one end of the first ball connected to the annular notch has a rounded chamfer.

Further preferably, the pressurizing and guiding needle and the ball module are integrally formed.

Preferably, the surface of the annular gap is provided with a wear-resistant coating.

As a further preferred, the pressure guide pin and the sphere module are laser welded.

More preferably, the pressure and guide needle is made of titanium alloy or other alloy materials.

Compared with the prior art, the technical scheme has the positive effects that:

the utility model discloses a spheroid module, the needle insertion degree of depth of steerable kirschner wire prevents that the needle insertion is too dark to arouse the damage of nerve, blood vessel and important internal organs, has improved the security.

The utility model discloses a be equipped with screw thread portion on the pressurization guide pin, can show the reinforcing and to the power of controlling of skeleton, can avoid the removal of fracture piece and ke shi needle, reduce unexpected risk.

The kirschner wires penetrate through the fixed fracture blocks through the nail holes of the bone fracture steel plates, and the bone fracture steel plates can be directly and temporarily fixed on bones by utilizing the characteristic that the ball body modules of the kirschner wires are larger than the nail holes of the bone fracture steel plates, so that the operation steps of the operation are simplified, the operation time is saved, and the bleeding and infection risks are reduced.

The utility model discloses be equipped with the spheroid, cooperate corresponding pressurization or strut instrument pincers, can carry out necessary pressurization or strut the operation to the fracture broken end, be favorable to the better fixed that resets of fracture.

Different models are arranged according to the difference of the diameter, the total length and the length of the thread part of the Kirschner wire, so that various requirements in clinic can be well met.

Drawings

Fig. 1 is a schematic structural diagram of the kirschner wire according to the present invention.

In the figure: 1. pressurizing and guiding a needle; 2. a sphere module; 3. a threaded portion; 4. a needle head; 5. an annular gap; 6. chamfering with an arc; 7. a first sphere; 8. a second sphere; 9. triangular prism part.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

A Kirschner wire comprises a pressurizing guide pin 1, a needle head 4 and a sphere module 2, wherein the middle part of the sphere module 2 is provided with a needle hole, one end of the pressurizing guide pin 1 penetrates through the needle hole and is connected with the sphere module 2, and the sphere module 2 is positioned at the outer edge of the pressurizing guide pin 1; one end of the pressurizing and guiding needle 1 is provided with a thread part 3, the thread part 3 is positioned at one side of the sphere module 2, the top end of the thread part 3 is connected with a needle head 4, and the needle head 4 is conical; the outer wall of the sphere module 2 is provided with an annular gap 5; the other end of the pressure guide needle 1 is provided with a triangular prism part 9.

The utility model discloses a be equipped with the screw thread on pressurization guide pin 1, possess good sclerotin and control power, can avoid the unexpected removal of fracture piece and ke shi needle. The utility model discloses be equipped with spheroid module 2, the ke shi needle passes fixed fracture piece via the nail hole of coaptation steel sheet, utilizes the big characteristic in ke shi needle spheroid module 2 ratio coaptation steel sheet nail hole, can be fixed in the skeleton with coaptation steel sheet directness interim, and the operation on next step of being convenient for shortens operation time.

Wherein, can be according to the distance difference of spheroid module 2 and 4 tops of syringe needle, be equipped with different limit for depth length, steerable needle insertion degree of depth prevents that the needle insertion is too deep to cause the damage of nerve, blood vessel and important viscera.

Wherein the needle head 4 is conical, so that the kirschner wire can enter the bone more easily. Preferably, the needle 4 is in the shape of a triangular pyramid or a polygonal pyramid.

The annular gap 5 of the ball head module is designed to be matched with a clamping head of a matched tool clamp, so that the tool clamp can hold a Kirschner wire through the ball head module, and accordingly corresponding spreading or pressurizing operation is performed, and better resetting of a fracture block is assisted.

Wherein, the other end of the pressurizing and guiding needle 1 is provided with a triangular prism structure 9. The triangular prism structure 9 can be better matched with a Y-shaped interface of the electric drill, the assembly and disassembly are more convenient, and the torsion can be enhanced.

Wherein, the diameter, the total length and the length of screw thread portion according to the kirschner wire are different, are equipped with different models, can satisfy the demand of different skeletons well.

Preferably, the length of the pressure guide needle is 100 to 250mm, the diameter is 1.0 to 4.0mm, and the length of the thread part 3 is 10mm to 60 mm.

Further, as a preferred embodiment, the ball module 2 includes at least one ball structure, and the ball structure connects the pressurization guiding pin 1 and the screw portion 3. The design of the ball head module can play a role in limiting the Kirschner wire from entering the important tissue damaged too deeply and can play a role in pressurizing.

Further, as a preferred embodiment, the sphere module 2 includes two sphere structures, the two sphere structures are a first sphere 7 and a second sphere 8, and the annular gap 5 is located at an outer edge of an end of the first sphere 7 close to the second sphere 8. The design of the annular gap 5 of the double-ball head module is matched with a clamping head of a matched tool clamp, so that the tool clamp can hold a Kirschner wire through the ball head module, and accordingly corresponding spreading or pressurizing operation is carried out, and better resetting of a fracture block is assisted.

Further, as a preferred embodiment, the edge of the end of the first ball 7 connected to the annular notch 5 has a rounded chamfer 6. The design of the arc chamfer 6 can effectively avoid the danger that a doctor is scratched by the chamfer when using the Kirschner wire, and greatly improve the safety of the Kirschner wire in use.

Further, as a preferred embodiment, the pressurizing and guiding needle 1 and the sphere module 2 are integrally formed. The pressurizing guide pin 1 and the ball body module 2 are integrally formed, so that the strength and the integrity of the Kirschner wire are improved, the production and processing links are simplified, the defect points of products are reduced, the integrally formed processing steps are simple, and the processing period is greatly shortened.

Further, as a preferred embodiment, the surface of the annular gap 5 is provided with a wear-resistant coating. The friction force between the tool clamp head and the annular notch 5 is increased, so that the tool clamp is better matched with the Kirschner wire, and the holding force of the tool clamp on the Kirschner wire is improved. In addition, the friction strength between the tool pliers and the kirschner wire can be increased by adopting different modes of increasing the anti-skid pad, rough machining and the like, so that the use efficiency of the kirschner wire is improved.

Further, as a preferred embodiment, the pressure guide needle 1 and the sphere module 2 are laser welded. The laser welding has the advantages of low deformation, no filler metal, high precision and the like; the connection strength between the pressurizing and guiding needle 1 and the ball module 2 is improved.

Further, as a preferred embodiment, the pressing and guiding needle 1 is made of titanium alloy or other alloy materials. The titanium alloy material has the characteristics of high strength, mechanical property close to that of human bones, strength far superior to that of pure titanium, fatigue resistance, corrosion resistance, excellent biocompatibility and the like. Besides, stainless steel or other alloy materials can be adopted, so that the application range of the pressurizing and guiding needle 1 is expanded.

According to the first embodiment, when the bone fracture plate is used, according to the specific situation of the fracture of a patient, the Kirschner wire with a proper type is selected after the fracture is reset, the Kirschner wire is driven into a bone through an electric drill, a fracture block is temporarily fixed, then the fracture end is fixed through the bone fracture plate, and then the Kirschner wire can be pulled out.

In the embodiment, the kirschner wire is provided with the sphere module 2, when the kirschner wire penetrates deeply until the sphere module 2 touches the bone, the kirschner wire cannot continue to penetrate deeply due to the limitation of the ball head, and the damage to nerves, blood vessels and important visceral organs caused by the over-deep penetration can be avoided. If necessary, the kirschner wire can penetrate through the fixed fracture block through the nail hole of the bone fracture steel plate, and the bone fracture steel plate can be temporarily fixed on the bone by utilizing the characteristic that the kirschner wire ball module 2 is larger than the nail hole of the bone fracture steel plate, thereby simplifying the operation steps of the operation, saving the operation time and reducing the bleeding and infection risks.

The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.

Claims (8)

1. The Kirschner wire is characterized by comprising a pressurizing and guiding needle (1), a needle head (4) and a sphere module (2), wherein a needle hole is formed in the middle of the sphere module (2), one end of the pressurizing and guiding needle (1) penetrates through the needle hole and is connected with the sphere module (2), and the sphere module (2) is positioned at the outer edge of the pressurizing and guiding needle (1); one end of the pressurizing and guiding needle (1) is provided with a threaded part (3), the threaded part (3) is positioned on one side of the sphere module (2), the top end of the threaded part (3) is connected with the needle head (4), and the needle head (4) is conical; the outer wall of the sphere module (2) is provided with an annular gap (5); the other end of the pressurizing and guiding needle (1) is provided with a triangular prism part (9).

2. Kirschner wire according to claim 1, characterized in that the sphere module (2) comprises at least one sphere structure connecting the pressurization and guide wire (1) and the threaded portion (3).

3. Kirschner wire according to claim 2, characterized in that the sphere module (2) comprises two sphere structures, a first sphere (7) and a second sphere (8), the annular notch (5) being located at the outer edge of the first sphere (7) at the end close to the second sphere (8).

4. Kirschner wire according to claim 3, characterized in that the edge of the end of the first sphere (7) connecting with the annular indentation (5) has a rounded chamfer (6).

5. Kirschner wire according to claim 1, characterized in that the pressurizing and guiding needle (1) and the sphere module (2) are integrally formed.

6. Kirschner wire according to claim 4, characterized in that the surface of the annular indentation (5) is provided with a wear-resistant coating.

7. Kirschner wire according to claim 1, characterized in that the pressure guide pin (1) and the sphere module (2) are laser welded.

8. The kirschner wire of claim 1, wherein the pressurizing and guiding needle (1) is made of titanium alloy or other alloy materials.

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