Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Modeling method of necrosis caput femoris restoring model based on umbrella-shaped caput femoris supporter

A technology for repairing models and modeling methods. It is applied in 3D modeling, instruments, image data processing, etc., and can solve problems such as large trauma, small supporting force, and no solution.

Inactive Publication Date: 2015-03-25
XIAN UNIV OF SCI & TECH
View PDF5 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The memory metal nickel-titanium alloy (Ni-Ti) tennis ball designed by Wang Yan et al. is made of metal wire. Although the supporting area is relatively large, the supporting force is correspondingly small.
In addition, the metal tennis ball needs to open the femoral head, which is relatively traumatic
It can be seen that although there are many treatment options for avascular necrosis of the femoral head, there is no single most reliable solution. After verification by finite element analysis, many problems have been exposed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Modeling method of necrosis caput femoris restoring model based on umbrella-shaped caput femoris supporter
  • Modeling method of necrosis caput femoris restoring model based on umbrella-shaped caput femoris supporter
  • Modeling method of necrosis caput femoris restoring model based on umbrella-shaped caput femoris supporter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0128] Such as figure 1 The method for modeling a necrotic femoral head repair model based on an umbrella-shaped femoral head support is shown, including the following steps:

[0129] Step 1: Obtaining the three-dimensional model of the femoral head to be repaired: using image processing equipment to obtain the NURBS surface model of the femoral head to be repaired, and synchronously storing the obtained NURBS surface model.

[0130] The femoral head to be repaired is a femoral head that has a femoral tissue necrosis area and is pre-repaired with a femoral head supporter. The femoral head support is composed of an umbrella-shaped support 1 and a support sleeve 2 for supporting the umbrella-shaped support 1. The umbrella-shaped support 1 is composed of a plurality of supporting ribs 3 and the lower end of the umbrella handle 4 Socket with support sleeve 2, see details figure 2 .

[0131] Step 2: Establishment of the necrotic femoral head model: First, according to the shape of the u...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Arc lengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a modeling method of a necrosis caput femoris restoring model based on an umbrella-shaped caput femoris supporter. The modeling method comprises the steps that firstly, a three-dimensional model of a to-be-restored caput femoris is obtained, wherein the NURBS curved surface model of the to-be-restored caput femoris is obtained, the to-be-restored caput femoris is a caput femoris which exists in the thigh tissue necrosis area and is pre-restored by the caput femoris supporter, and the caput femoris supporter is composed of an umbrella-shaped supporter body and a supporting sleeve; secondly, the necrosis area needing to be separated is determined according to the shape of the umbrella-shaped supporter body, and a necrosis caput femoris model is established; thirdly, a caput femoris supporter model is established; fourthly, a necrosis caput femoris implantation model is established, wherein the necrosis caput femoris implantation model with an implantation channel and a three-dimensional model of an implanted bone are established; fifthly, the necrosis caput femoris restoring model is established. The modeling method is simple in step, reasonable in design, convenient to achieve and good in using effect, the restoring model of the caput femoris supporter implanted into the necrosis caput femoris can be easily, conveniently and quickly established, and the quality of the established restoring model is high.

Description

Technical field [0001] The invention relates to a modeling method, in particular to a modeling method of a necrotic femoral head repair model based on an umbrella-shaped femoral head support. Background technique [0002] There are many studies abroad on the treatment of avascular necrosis of the femoral head. Castro and others of the Department of Plastic Surgery of Tulane University School of Medicine analyzed the efficacy of core decompression in the treatment of avascular necrosis of the femoral head through Meta analysis, and conducted statistical research on the efficacy of single core decompression surgery. Analysis shows that the success rate of core decompression is statistically better than conservative treatment, but it is still not the best treatment. Meta analysis is a type of statistical method that integrates many research results of the same subject with specific conditions. This analysis method is often used for statistical research of clinical data, but because...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06F17/50G06T17/00
Inventor 龚晓燕吴哲杜东鹏薛河邢娟
Owner XIAN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com