Manufacturing method of individualized prosthesis with porous structure

A technology of porous structure and manufacturing method, applied in prosthesis, medical science, bone implants, etc., can solve problems such as limited bone resources, difficult recovery of external shape, and damage to bone harvesting sites, so as to facilitate osseointegration and restore the face Morphological, highly individual effects

Inactive Publication Date: 2017-11-24
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is not easy to reject and can achieve good osseointegration, but the bone resources are limited, it will cause damage to the bone harvesting site, and the external shape is not easy to restore

Method used

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  • Manufacturing method of individualized prosthesis with porous structure
  • Manufacturing method of individualized prosthesis with porous structure
  • Manufacturing method of individualized prosthesis with porous structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] Select a head CT scan data, import it into mimics10.0 software, set a reasonable gray threshold, and extract the mandible model separately. The mandibular triangular surface model extracted by mimics10.0 software was imported into geomagicstudio software for reverse modeling through smoothing and denoising, contour line editing, surface patch construction, surface fitting and other operations, and the mandibular solid model in IGS format was obtained.

[0026] Import the mandibular solid model in IGS format into rhino software, intercept the part of the diseased mandibular segment to be replaced by the prosthesis, and design the solid shell and fixed wings on both sides of it. Among them, considering the formability of laser selective melting molding equipment and the original thickness (2 mm) of mandibular cortical bone, and considering that the elastic modulus of metal is much higher than that of cortical bone, the thickness of the solid shell is set to 0.5-1 mm. The ...

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Abstract

The invention discloses a manufacturing method of an individualized prosthesis with a porous structure. The method comprises the steps of extracting CT data; reversely modeling; forward designing; adding supports and cutting into slices: importing an acquired design model into Materialise Magics software to add the supports and cut into slices; importing sliced data into RPPPath software to plan a scanning path and importing into selective laser melting molding equipment for molding; and post-processing: post-processing molded prosthesis components for a part to be repaired, so as to finally acquire the individualized titanium alloy prosthesis with the porous structure for the part to be repaired. A selective laser melting molding technology is used for manufacturing, relatively high individualization is achieved, and a face form of a patient can be well recovered; the method provided by the invention adopts a microcosmic porous structure with suitable porous parameters, so that synostosis is facilitated; the method is high in practicability instead of staying in a model level, and relative design content is applicable to different cases and different cut bone forms.

Description

technical field [0001] The invention relates to the field of prosthesis preparation, in particular to a method for manufacturing a prosthesis with a personalized porous structure. Background technique [0002] With the development of scientific and medical technology, complex operations such as mandibular defect and missing repair have also gradually improved. At present, mandibular repair is mostly used to intercept human autogenous bone (such as fibula) and connect it with the healthy jaw parts at both ends under the fixation of prefabricated titanium plate and titanium nail. Although this method is not easy to reject and can achieve good osseointegration, but the bone resources are limited, it will cause damage to the bone harvesting site, and the external shape is not easy to restore. [0003] In recent years, scholars have found that some porous metal materials such as porous titanium and porous nickel-titanium are ideal substitutes for human bones. The porous structur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/28
CPCA61F2/2875A61F2002/3093A61F2002/30948A61F2002/3097
Inventor 杨永强肖然宋长辉张明康
Owner SOUTH CHINA UNIV OF TECH
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