Pressurized kirschner wire

Abstract

The invention belongs to the field of kirschner wires for fracture fixation, and specifically discloses a pressurized kirschner wire. The kirschner wire includes a kirschner wire body; the kirschner wire body is provided with a needle tip part, a thin needle body part, a needle body transitional part and a rear needle body part; the needle tip part is an imitated cone sharp point, and the rear endof the needle tip part is connected to the thin needle body part; the diameter of the thin needle body part is less than that of the needle body transitional part and the rear needle body part; the rear end part of the thin needle body part is connected to the needle body transitional part, and the end part of the needle body transitional part extends to the end part of the rear needle body part;and the needle body transitional part is connected to the rear needle body part to form a smooth conical surface structure. When the kirschner wire fixes fractures, the broken ends of fractured bonescan be pressurized, the widths of fracture lines can be decreased, stronger mechanical stability can be obtained, and the recovery of fractures can be promoted; and skin soft-tissue infection at needle inserting parts and granulation proliferation during the fixing of the kirschner wire can be reduced, and infection and bleeding caused by residual needle passages after the kirschner wire is removed can be reduced as well.

Description

technical field [0001] The invention relates to the field of Kirschner wires used in orthopedics, in particular to a pressurized Kirschner wire. Background technique [0002] Kirschner wire is a commonly used internal fixation material in orthopedics. It is used to fix small fractures or avulsion fractures and other fractures with low stress. It is also used in the fixation of temporary fracture fragments in orthopedic operations. [0003] The existing clinically used Kirschner wire has a single structure, being only a straight needle, which is inserted into the bone for fixation during use. Taking fractures as an example, when a fracture occurs, the fracture line often passes through the transitional part of the junction of cancellous bone and cortical bone. When a fracture is fixed with a Kirschner wire, it is often necessary to fix the cancellous bone and cortical bone through the fracture line. In terms of mechanical stability, the mechanical strength of cancellous bone...

AI Technical Summary

Problems solved by technology

In terms of mechanical stability, the mechanical strength of cancellous bone and cortical bone is different, and the current clinical use of Kirschner wires with the same thickness before and after can not obtain the best mechanical stability

[0004] Moreover, when the existing clinical use of Kirschner wires is used for fixation, only the two ends of the fracture are penetrated and connected, which cannot press the two ends of the fracture during the needle insertion process, and cannot achieve the purpose of reducing the separation and displacement of the broken ends of the fracture. At the same time, the current clinical use of Kirschner wires is a non-absorbable material for the human body. After the treatment is completed and the Kirschner wires are removed, there are complications such as secondary infection and bleeding in the residual Kirschner wires.

[0005] Moreover, in the prior art, the thickness of the Kirschner wire is consistent before and after the use of the Kirschner wire. After the Kirschner wire is used for fixation, there is a risk that the needle tail will continue to move forward after being squeezed; Complications and risks of skin and soft tissue infection and granulation hyperplasia at the needle site

Images