Three-dimensional printing technology based method for forming medical porous pure titanium implant

A technology of three-dimensional printing and implants, which is applied in the field of preparation of individualized medical porous pure titanium implants, which can solve the problems of inability to achieve individualization, complex shapes and tiny details, and achieve low cost and method Simple, well-matched effect

Inactive Publication Date: 2010-12-29
SHANGHAI NINTH PEOPLES HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the biggest feature of medical implant materials is that the size varies from person to person, the shape is complex, and the tiny details are rich, which puts forward highe

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method for forming individualized medical porous pure titanium implants based on three-dimensional printing technology, comprising:

[0021] (1) Mix pure titanium powder with a particle size of about 30 μm and water-soluble bonding material (polyvinyl alcohol) in a weight ratio of 5:95, and then grind it so that the powder does not agglomerate;

[0022] (2) The above-mentioned ground powder is transported to the platform, and the layer is rolled and laminated; the size of the titanium implant specimen is designed to be 36mm×12mm×6mm, and it is input into the supporting software of the three-dimensional printing equipment. According to the cross-section information of each layer of the specimen CAD, the print head sprays the binder (1% polyvinylpyrrolidone concentration) on the titanium powder to form a two-dimensional plane, and sprays each layer of binder twice. After one layer is processed, the workbench is lowered by 0.1mm, and the next layer is process...

Embodiment 2

[0024] A preparation method for forming individualized medical porous pure titanium implants based on three-dimensional printing technology, comprising:

[0025] (1) Mix pure titanium powder with a particle size of about 30 μm and water-soluble bonding material (polyvinyl alcohol) in a weight ratio of 10:90, and then grind it so that the powder does not agglomerate;

[0026] (2) Transport the above-mentioned ground powder to the platform, and roll the layer. The size of the titanium implant specimen was designed to be 36mm×12mm×6mm, and it was input into the supporting software of the 3D printing equipment. According to the cross-section information of each layer of the specimen CAD, the print head sprays the binder (1% polyvinylpyrrolidone concentration) on the titanium powder to form a two-dimensional plane, and sprays each layer of binder twice. After one layer is processed, the workbench is lowered by 0.1mm, and the next layer is processed, and the layers are piled up and...

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PUM

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Abstract

The invention relates to a three-dimensional printing technology based method for forming a medical porous pure titanium implant, comprising the following steps of: (1) mixing pure titanium powder with water-soluble binding materials, and grinding; (2) conveying the pure titanium powder to a platform, and inputting a designed titanium implant CAD file into matching software of three-dimensional printing equipment to direct the three-dimensional printing equipment to work; spraying binders to the titanium powder to form a two-dimensional plane by a printing head, , descending a work table to process a next layer after finishing processing one layer, and piling layer by layer for forming till a processed article is sprayed and formed completely; after the processed article is formed, standing the processed article, sweeping unbounded powder to obtain an initially forming article, and then sintering so as to obtain the medical porous pure titanium implant. The method is simple, has low cost and is suitable for industrialized production; the obtained medical porous pure titanium implant has high matching degree with a natural bone and can be better combined with a bone tissue due to a formed porous structure.

Description

technical field [0001] The invention belongs to the field of forming individualized medical porous pure titanium implants, in particular to a preparation method for forming individualized medical porous pure titanium implants based on three-dimensional printing technology. Background technique [0002] Compared with other metals, titanium has excellent mechanical properties, corrosion resistance, chemical stability and biological safety, and relatively low price. In the 1940s, Bothe and others first carried out animal experiments on titanium as a medical implant material, and found that there was no adverse reaction between titanium and bone tissue, and thus opened the application of titanium in the field of biomedicine. At present, it is widely used clinically as a medical implant material and has achieved success. However, they have a higher elastic modulus than human bone tissue (titanium is about 100-110GPa, and human bone is about 2-40GPa), so it is easy to cause the e...

Claims

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Application Information

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IPC IPC(8): B22F3/00B22F10/14B22F10/64
Inventor 孙健熊耀阳陈萍张富强
Owner SHANGHAI NINTH PEOPLES HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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