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Fracture healing simulation method based on ultrasonic effect and mechanical environment

A technology of fracture healing and mechanical environment, applied in informatics, medical simulation, medical informatics, etc., can solve the problems of lack of, not finding the positive effect of mathematical models, not considering the influence of cell proliferation and differentiation, etc.

Pending Publication Date: 2020-12-04
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

[0003] At present, there is a lack of computer simulation models that can express that ultrasound plays such an important role in the fracture healing process. First, it does not consider the impact of ultrasound on the proliferation and differentiation of cells in the tissue during the fracture healing process; second, it does not consider what form of ultrasound is used. The energy delivered to the fracture site; there is no suitable mathematical model to express the positive effect of ultrasound on the fracture healing process

Method used

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  • Fracture healing simulation method based on ultrasonic effect and mechanical environment
  • Fracture healing simulation method based on ultrasonic effect and mechanical environment
  • Fracture healing simulation method based on ultrasonic effect and mechanical environment

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specific Embodiment approach 1

[0080] Specific embodiment one: set up the three-dimensional geometric model of fracture site; The establishment process of fracture site three-dimensional geometric model is as follows:

[0081] 1) Multiple images in DICOM format are obtained from medical imaging CT scans;

[0082] 2) Then import it into Minics software for three-dimensional reconstruction;

[0083] 3) Import the 3D reconstructed model into Geomagic software for smoothing and solidification operations to obtain a 3D geometric model of the fracture site.

specific Embodiment approach 2

[0084] Specific embodiment two: import the geometric model that obtains into Hypermesh and carry out grid division, set up the finite element model of the bone of linear elasticity and callus.

specific Embodiment approach 3

[0085] Specific implementation mode three: the material property at the initial moment in the callus is assigned the material property value of the granulation tissue, and the applied force is the maximum value of the force that the fracture site can bear when it moves normally.

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Abstract

The invention discloses a fracture healing simulation method based on an ultrasonic effect and a force environment. The fracture healing simulation method specifically comprises the following steps: establishing a three-dimensional model of a fracture part; meshing the obtained geometric model, and establishing a finite element model of bones and callus; analyzing and resolving the finite elementmodel, and solving expansion strain and distortion strain of the fracture area; establishing an ultrasonic three-dimensional diffusion model of the fracture area; carrying out finite element calculation on the ultrasonic three-dimensional diffusion model to obtain sound field distribution of a fracture area; establishing a fuzzy mathematical model of force and ultrasonic sound field distribution joint control; calculating new material attributes in the organization; establishing a fracture healing simulation process based on the ultrasonic effect and the mechanical environment according to thesteps, judging whether the material attribute in the tissue reaches the material attribute value of the bone or not according to the tissue material attribute value calculated in the step 8, and finishing simulation if the material attribute value of the bone is reached; otherwise, updating the organization material attribute value and entering the next iterative simulation.

Description

technical field [0001] The invention relates to a fracture healing simulation method based on ultrasonic action and mechanical environment. Background technique [0002] In recent years, with the rapid development of construction, transportation and other industries and the aging population in China, the number of construction injuries, traffic injuries and elderly osteoporotic fractures has increased rapidly every year. According to the statistics of traffic accidents in 2015, there were 10,597,358 car accidents in 2015, of which 98.5% were injured; according to the big data on the health of the elderly in China in 2015, osteoporosis has jumped to the seventh place among common diseases and frequently-occurring diseases bit. Among them, the prevalence rate of people over 60 years old is 56%, and women account for 60%-70%. In these diseases, the incidence of fractures is close to one-third of the total data, and the annual medical expenses are about 15 billion yuan, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/20G16H50/50
CPCG06T17/20G16H50/50G06T2210/41
Inventor 王沫楠史小康
Owner HARBIN UNIV OF SCI & TECH
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