CN210931758U - Kirschner wire - Google Patents

Abstract

The utility model provides a kirschner wire, including the needle bar body, the needle bar both ends all are provided with the syringe needle, whole be provided with the screw thread on the needle bar, still be provided with a pair of nut on the needle bar. The kirschner wire has the function close to that of a screw, is not easy to loosen, cannot excessively pressurize, and is simple and convenient when the broken end of the fracture is fixed.

Description

Kirschner wire

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to kirschner wire.

Background

The kirschner wire is a commonly used internal fixation material in orthopedics, can be used as a guide pin before positioning or cannulated screw insertion, can also be used for auxiliary reduction of fracture, and can even be used for final fixation, such as patellar fracture, ulna olecranal fracture, distal humeral fractured fracture and the like. But because the kirschner wire is smooth and achieves the function of sliding and pressurizing at the fracture end, the most frequently occurring complication in the fixing process is easy loosening; in addition, because the position of the end of the kirschner wire is important when the fracture is fixed, in order to enable the kirschner wire to be fixed at the optimal fixed position of the fracture end, an operator uses the kirschner wire to drill a hole from the fracture end and retreat, then the tail part of the kirschner wire enters the fracture end in a reverse direction through a drilled tunnel, the point of the kirschner wire is retreated to the fracture end, and after the fracture is restored, the point of the kirschner wire is drilled to the other end and fixed, the process is troublesome, more time and energy are needed, and the connection between an electric drill and the kirschner wire needs to be replaced for many times in the process of replacing the direction of the kirschner wire; meanwhile, the smooth kirschner wire can be over-stressed during the sliding compression process, and the fractured fracture can be displaced again.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a kirschner wire. The kirschner wire has the function close to that of a screw, is not easy to loosen, cannot excessively pressurize, and is simple and convenient when the broken end of the fracture is fixed.

The utility model provides a technical problem adopt following technical scheme to realize:

the utility model provides a kirschner wire, includes the needle bar body, the needle bar both ends all are provided with the syringe needle, whole be provided with the screw thread on the needle bar, still be provided with a pair of nut on the needle bar.

The Kirschner wire of the utility model has the advantages that the two ends are provided with the needle heads, so that the other needle head is pushed to the fracture end, and after the fracture is restored, the needle point of the needle head is drilled into the other end, so that the operation flow is simplified. Meanwhile, the whole Kirschner wire is provided with threads, after the Kirschner wire is arranged at a proper position, nuts are sleeved at two ends of the Kirschner wire and screwed, and then the redundant tail part of the Kirschner wire is cut off, so that the contact area with surrounding soft tissues is increased, and the soft tissues or the skin is not easy to puncture. Furthermore, the Kirschner wire of the utility model is fixed at the fracture part, and does not need to be fixed by steps such as depth measurement and tapping.

Preferably, the thickness of the screw cap is 1-4 mm.

By adopting the preferred scheme, the fracture of different types of bones can be fixed.

Preferably, the needle rod and the two needles are provided with through holes communicated with each other.

By adopting the preferable scheme, the Kirschner wire body can be partially hollow, so that the weight of the Kirschner wire can be reduced.

Preferably, the needle head is triangular pyramid or polygonal pyramid.

Preferably, the needle head and the needle rod can be made of metal materials or high polymer materials.

Preferably, the screw cap is tapered or cylindrical.

By adopting the preferable scheme, the conical screw cap is more slender, so that the screw cap and the Kirschner wire are fixed more firmly, and one end of the conical screw cap is sharp and can enter the bone, thereby being beneficial to the fixation of cancellous bone.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure, 1-needle head, 2-thread, 3-nut, 4-needle bar and 5-through hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

The Kirschner wire comprises a needle rod 4, wherein needle heads 1 are arranged at two ends of the needle rod 4, threads 2 are arranged on the needle rod 4, and a pair of screw caps 3 are arranged on the needle rod 4. In this embodiment, k-wire body both ends are provided with syringe needle 1, and the art person uses k-wire to bore the hole from the one end of fracture needle feeding, need not directly get the needle, can directly push away another syringe needle to the fracture end, after waiting to restore the fracture back, with this syringe needle 1 the needle point bore the other end can, at this in-process, only need change once the connection of electric drill and k-wire can accomplish the fracture of k-wire and reset the butt joint, simplified the operation flow. After the Kirschner wire enters the optimal position, the two ends of the Kirschner wire are sleeved in the screw caps 3 and screwed down to complete the fixation of the Kirschner wire, and the steps of depth measurement, tapping and the like are not required when the Kirschner wire is fixed, so that the fixation process of the Kirschner wire in an operation is simplified. And the needle bar is more stable when being full thread, and the condition of over pressurization is difficult to appear. After the Kirschner wire is fixed and locked, the redundant tail part of the Kirschner wire is cut off, the contact area with surrounding soft tissues is increased, and the soft tissues or the skin is not easy to puncture.

Example 2

Based on the above example 1, the thickness of the spiral 3 is 1-4 mm. The thickness of the nut 3 is generally selected to be 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm and 4mm according to the application range of the Kirschner wire, so that the Kirschner wire can fix fractures of different types of bones. In this embodiment, other undescribed contents are the same as those in the above embodiment, and are not described again here.

Example 3

Based on the above embodiment 1, the needle bar 4 and the two needles 1 are provided with through holes communicating with each other. The kirschner wire can be partially hollow, so that the weight of the kirschner wire is reduced. In this embodiment, other undescribed contents are the same as those in the above embodiment, and are not described again here.

Example 4

Based on the embodiment 1, the needle head is of a triangular pyramid shape or a polygonal pyramid shape. The needles at the two ends are generally triangular pyramids, and moreover, the needles can also be polygonal pyramids. In this embodiment, other undescribed contents are the same as those in the above embodiment, and are not described again here.

Example 5

Based on the above embodiment 1, the needle head and the needle rod may be made of metal or polymer material. The needle head and the needle rod can be made of metal materials which are light in texture and not easy to damage, and can also be made of polymer materials which are not easy to damage and are non-toxic. In this embodiment, other undescribed contents are the same as those in the above embodiment, and are not described again here.

Example 6

Based on the above embodiment 1 or 2, the screw cap is tapered or cylindrical. In this embodiment, the nut is tapered, so that the nut is more slender, the nut and the kirschner wire can be fixed more firmly, and meanwhile, the sharp end of the tapered nut can enter cancellous bone to help fix the fracture. The shape of the screw cap is not limited to a cone shape, but a cone shape is only one preferable way in the present embodiment. In this embodiment, other undescribed contents are the same as those in the above embodiment, and are not described again here.

The above description is only exemplary of the present invention and should not be taken as limiting, and all changes, equivalents, and improvements made within the spirit and principles of the present invention should be understood as being included in the scope of the present invention.

Claims (5)

1. The utility model provides a kirschner wire, includes the needle bar body, its characterized in that, the needle bar both ends all are provided with the syringe needle, whole be provided with the screw thread on the needle bar, still be provided with a pair of nut on the needle bar, needle bar and two the syringe needle is provided with the through-hole of mutual intercommunication.

2. A k-wire as claimed in claim 1, wherein said nut has a thickness of 1-4 mm.

3. The k-wire of claim 1, wherein said tip is of triangular pyramid or polygonal pyramid shape.

4. The kirschner wire of claim 1, wherein the needle head and the needle shaft are made of metal or polymer.

5. A k-wire as claimed in claim 1 or claim 2, wherein said nut is tapered or cylindrical.

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