A kind of fracture reduction external fixation device with variable stiffness and its manufacturing method

A manufacturing method and external fixation technology, which can be applied to external fixators, fixators, etc., can solve the problems of large stress change and unfavorable stress stimulation of fractured ends, and achieve the effects of good reduction and fixation effect, small trauma, and suitable for popularization and use.

Active Publication Date: 2022-04-22
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This adjustment method requires the screws on multiple fixing clips to make an adjustment response at the same time, and the large range of stress changes is not conducive to the stress stimulation of the fracture end.

Method used

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  • A kind of fracture reduction external fixation device with variable stiffness and its manufacturing method
  • A kind of fracture reduction external fixation device with variable stiffness and its manufacturing method
  • A kind of fracture reduction external fixation device with variable stiffness and its manufacturing method

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Experimental program
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Embodiment Construction

[0036] The present invention is further described below in conjunction with accompanying drawing:

[0037] see Figure 1 to Figure 5 , the present invention establishes a three-dimensional digital model of the fracture through CT scan data after injecting a steel needle into the broken end of the patient's fracture.

[0038] The device of the present invention is designed according to the position of the steel needle in the three-dimensional digital model.

[0039] The main body of the external fixation is designed as a block structure connected by columns.

[0040] Bolt holes for connecting and fixing are designed on the upper and lower sides of the front and rear parts of the external fixation.

[0041] The place where the front part of the external fixation is connected with the steel needle is designed with a double-headed stud to adjust the stress of the broken end.

[0042] The block adjacent to the steel needle at the front of the external fixation is embedded with a...

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PUM

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Abstract

A fracture reduction external fixation device with variable stiffness and its manufacturing method, comprising a front fixation body, a rear fixation body and an adjustment device; the front fixation body and the rear fixation body are buckled and fixedly connected to form a hollow cylindrical structure, on the front fixation body An opening is provided, and an adjustment device is provided in the opening; the main body of the fixer of the present invention is composed of two block-shaped structural components, the front and the rear, and there are connecting columns between the block structures. The rigidity of the fixer is adjusted by adjusting the block structure through the adjustment device Compared with the existing solutions, the reset and fixation effect is good, the trauma is small, and the personalized order is low in cost; at the same time, the present invention uses 3D printing materials, and the different elastic modulus is conducive to the reduction of the overall external fixation stiffness of the adjustment device. Or enhanced.

Description

technical field [0001] The invention belongs to the technical field of bone external fixation devices, and in particular relates to a fracture reduction external fixation device with variable stiffness and a manufacturing method thereof. Background technique [0002] External fixation is a common instrument for fracture fixation. The common external fixator mainly uses steel needles percutaneously placed at the proximal and distal ends of the fracture, and then connects the steel needles exposed outside the skin with connecting rods and fixing clips. Connected to form a new spatial mechanical stability system to fix fractures; it is widely used in fractures. [0003] Appropriate stress stimulation during fracture recovery can promote the reconstruction and growth of bone tissue. According to Perren's strain theory, the formation of callus when the fracture grows requires a certain amount of stress stimulation to the broken end at different periods of growth, and the relativ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/66
CPCA61B17/66
Inventor 李宏伟李涤尘乔锋黄桂林李智凯
Owner XI AN JIAOTONG UNIV
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