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Internal fixing Kirschner wire for fracture

A K-wire and needle bar technology, applied in the field of medical devices

Active Publication Date: 2012-01-25
SUZHOU KANGLI ORTHOPEDICS INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the Kirschner wire penetrates into the bone, the Kirschner wire will recede for a period of time. After analysis, it is found that the Kirschner wire has no thread and is only inserted into the bone without any holding force.

Method used

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  • Internal fixing Kirschner wire for fracture
  • Internal fixing Kirschner wire for fracture

Examples

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Embodiment Construction

[0012] The present invention will be described in further detail below through specific examples.

[0013] A kind of Kirschner wire for internal fixation of fracture, such as figure 1 As shown, it includes a needle bar 1 and a needle point 2 arranged on the head of the needle bar 1. The needle point 2 is designed as a self-tapping screw head. The needle bar 1 is provided with a stopper 3 with a threading hole 4. The lateral dimension of the limiting portion 3 is greater than the diameter of the needle bar 1, the threading hole 4 can be a round hole, or a long hole, and the limiting portion 3 is approximately circular, and of course, it can also be in other shapes , such as rhombus, square, or other irregular shapes, as long as the lateral dimension of the limiting part 3 is larger than the diameter of the needle shaft 1, so that after the Kirschner wire is inserted, the limiting part 3 can prevent Kirschner from Needle inserted too far into human tissue. The tail end of the...

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Abstract

The invention discloses an internal fixing Kirschner wire for fracture. The Kirschner wire can prevent the rear shaft of the Kirschner wire from retreating, and can also prevent the Kirschner wire from excessively inserting into human body tissues in an axial direction. The internal fixing Kirschner wire for fracture comprises a needle bar and a needle point arranged at the head part of the needle bar, wherein the needle point is in self-tapping needle head design, the needle bar is provided with a limiting part with a threading hole, the lateral size of the limiting part is larger than the diameter of the needle bar, and the tail end of the needle bar is in a triangular prism shape.

Description

technical field [0001] The invention relates to a medical device, in particular to a Kirschner wire for fracture internal fixation. Background technique [0002] Kirschner wire is a commonly used internal fixation material in orthopedics. Its original size is generally about 20 centimeters, and there are several different specifications with a diameter of 0.5-2 mm. It is used to fix small fractures or avulsion fractures and other fractures with low stress. It is also often used in the fixation of temporary fracture blocks in orthopedic surgery. In recent years, with the wide application of external fixation brackets, the maximum diameter of Kirschner wires has been gradually increased to 4 mm, and external fixation screws can be used to fix emergency large fractures such as pelvic fractures and calcaneal fractures. However, after the Kirschner wire penetrates into the bone, the Kirschner wire will retreat for a while. After analysis, it is found that the Kirschner wire has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/68
Inventor 陈永兵陆军曹刚
Owner SUZHOU KANGLI ORTHOPEDICS INSTR
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