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Intelligent self-adaptive fracture fixation apparatus based on shape memory polymer

A memory polymer and fixation device technology, applied in fractures, medical science and other directions, can solve the problems of easily compressing tissue blood supply, fracture displacement, lack of elasticity, etc. The effect of sexual ulcers

Inactive Publication Date: 2016-01-06
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention aims to solve the problem that the traditional fracture fixation device lacks elasticity, and in the case of swelling after limb trauma, it is easy to compress the tissue to cause blood circulation disorder, and after the swelling is reduced, the fracture may be displaced due to the loose cast

Method used

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  • Intelligent self-adaptive fracture fixation apparatus based on shape memory polymer
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  • Intelligent self-adaptive fracture fixation apparatus based on shape memory polymer

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specific Embodiment approach 1

[0021] Specific implementation mode one: combine figure 1 — Figure 6 To describe this embodiment,

[0022] An intelligent self-adaptive fracture fixation device based on shape memory polymer, whose shape is the same as the shape of the limb at the fracture; the fracture fixation device is made of a shape memory polymer material or a composite material composed of a shape memory polymer and a reinforcing material solidified;

[0023] According to the change of the external environment, the shape memory polymer is based on the shape memory effect of the transition between the glass state and the rubber state, so that the fracture fixation device shows self-adaption;

[0024] The diameter or circumference of the original shape of the immobilization device is smaller than the diameter or circumference of the limb at the fracture site;

[0025] Changing the diameter or circumference of the fixation device prior to installation so that it is larger than the diameter or circumfer...

specific Embodiment approach 2

[0029] The shape memory polymer material in this embodiment contains reinforcing materials.

[0030] Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0031] The shape-memory polymer material in this embodiment is a thermoplastic shape-memory polymer, a thermosetting shape-memory polymer, or a composite of the two.

[0032] Other steps and parameters are the same as those in the specific embodiment 1 to 2.

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Abstract

An intelligent self-adaptive fracture fixation apparatus based on shape memory polymer relates to a fracture fixation apparatus and solves problems of hemodynamic disorder due to compression upon swell after limb trauma due to the lack of elasticity of a traditional fracture fixation apparatus, and fracture displacement due to excessive loose of a pipe after detumescence. The intelligent self-adaptive fracture fixation apparatus based on shape memory polymer is in a cylindrical shape the same as a limb shape of the fracture part. Shape memory polymer material or compound material combined by the shape memory polymer and reinforcing material is solidified to form the fracture fixation apparatus; and self-adaptive property can be produced for the fracture fixation apparatus according to external environment changes and the shape memory effect of the shape memory polymer transferring between a glass state and a rubber state. The intelligent self-adaptive fracture fixation apparatus based on shape memory polymer is applied to fracture fixation.

Description

technical field [0001] The invention relates to a fracture fixation device. Background technique [0002] At present, the existing main fracture fixation is plaster bandage fixation or wooden splint fixation. Although these two fixation methods can ensure the positioning of the bones, neither of these two fixation methods can accurately position the bones, especially after physical activity. Just can't guarantee the exact positioning of bones. [0003] At the same time, plaster bandage fixation or wooden splint fixation lacks elasticity, and it is easy to compress the tissue and cause blood circulation disorder when swelling occurs after limb trauma, and once the swelling subsides, the fracture may be displaced due to loose cast. [0004] Moreover, the fixation method of plaster bandages has poor air permeability, no elasticity, and it is very difficult to adjust the degree of tightness; plaster bandages or wooden splints generally need to go beyond the upper and lower join...

Claims

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Application Information

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IPC IPC(8): A61F5/05
Inventor 刘彦菊冷劲松赵伟刘立武杜海洋
Owner HARBIN INST OF TECH