Method for preparing porous tantalum medical implant material through three-dimensional printing forming

An implant material and a three-dimensional printer technology, which are applied in the field of preparation of porous medical metal implant materials, can solve the problems of complex shapes of biological materials, high requirements for tiny details, and failure to meet the requirements, and achieve three-dimensional connected distribution, low cost, and no cost. The effect of poisonous dust

Active Publication Date: 2012-11-28
CHONGQING RUNZE PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest feature of biomaterials is the complex shape and high requirements for tiny details. Therefore, high requirements are placed on the molding technology. However, the traditional molding technology cannot meet the requirements due to the limitation of the mold.

Method used

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  • Method for preparing porous tantalum medical implant material through three-dimensional printing forming
  • Method for preparing porous tantalum medical implant material through three-dimensional printing forming
  • Method for preparing porous tantalum medical implant material through three-dimensional printing forming

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for preparing a porous tantalum medical implant material, first fully mixing pure tantalum powder with a particle size of 15 μm and stearic acid at a volume ratio of 70:30, then grinding, passing through a 200-mesh sieve to agglomerate the powder into a larger Particles, but there is no agglomeration between the particles; the mixed tantalum particles prepared above are transported to the three-dimensional printing platform, rolled and laminated, and the sample size to be prepared is designed to be φ10×100mm, and its UG file is input In the three-dimensional printing equipment, according to the cross-section information of each layer of the sample, the print head sprays the α-ethyl cyanoacrylate binder with a mass concentration of 1% on the above-mentioned mixed tantalum powder particles to form a two-dimensional plane, and each layer sticks The binder is sprayed 3 times. After one layer is processed, the workbench is lowered by 80 μm, and the next layer is proc...

Embodiment 2

[0024] A method for preparing a porous tantalum medical implant material, first fully mixing pure tantalum powder with a particle size of 20 μm and zinc stearate at a volume ratio of 60:40, then grinding, and passing through a 200-mesh sieve to agglomerate the powder Large particles, but no agglomeration between particles; transport the above-mentioned mixed tantalum particles to the 3D printing platform, roll the layer, design the sample to be prepared, and input its UG file into the 3D printing device In the process, according to the cross-section information of each layer of the sample, the print head sprays the α-ethyl cyanoacrylate binder with a mass concentration of 0.8% on the mixed tantalum powder particles to form a two-dimensional plane, and each layer of binder sprays 3 times, after one layer is processed, the workbench is lowered by 100 μm, and the next layer is processed, and the layers are piled up and formed until the final sample is completed. After the sample i...

Embodiment 3～8

[0025] Embodiment 3~8: carry out according to following steps and process parameter, all the other are the same as embodiment 1.

[0026]

[0027]

[0028]

[0029]

[0030]

[0031] The obtained porous tantalum finished product is three-dimensionally completely connected, the pores are evenly distributed, and the biocompatibility is good. The test results according to the aforementioned method are as follows:

[0032] Example

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PUM

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Abstract

The invention discloses a method for preparing a porous tantalum medical implant material. The method comprises the following steps of: feeding mixed tantalum power formed by mixing pure tantalum powder and a forming agent into a printing platform of a three-dimensional printer, and rolling and paving; spraying an adhesion agent by a printing head of the three-dimensional printer to adhere the mixed tantalum powder so as to form a two-dimensional plane; descending a working table 80 to 100 mu m, and processing the next layer; accumulating and forming layer by layer; removing the tantalum powder particles which are not adhered to obtain an initially formed sample; and performing aftertreatment such as degreasing, vacuum sintering, cooling and the like to obtain the porous tantalum medical implant material, wherein the volume ratio of the pure tantalum powder to the forming agent is (60-80):(20-40), and the adhesion agent is 1 mass percent alpha-cyanoacrylate adhesive. The pores of the porous tantalum medical implant material prepared by the method are completely communicated in a three-dimensional mode; the porous tantalum medical implant material prepared by the method is high in biocompatibility; and meanwhile, the mechanical property of the porous tantalum medical implant material prepared by the method is consistent with that of loading bone tissues of a human body.

Description

technical field [0001] The invention relates to the field of preparation of porous medical metal implant materials, in particular to a method for preparing porous medical metal implant materials using three-dimensional printing technology. Background technique [0002] Porous medical metal implant materials have important and special uses in the treatment of bone tissue trauma and femoral tissue necrosis. Common materials of this type include metal stainless steel and porous metal titanium. As a porous implant material used in the treatment of bone tissue trauma and femoral tissue necrosis, its porosity should reach 30-80%, and the pores should be all connected and evenly distributed, or partially connected and evenly distributed according to the needs, so that it can be connected with The growth of bone tissue in the human body is consistent, and the weight of the material itself is reduced, so that it is suitable for human implantation. [0003] The refractory metal tanta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08C22C27/02A61L27/56
CPCB22F2301/20A61L27/04B22F2999/00A61L27/56B22F3/008B22F3/1146C22C1/08C22C27/02A61L27/047A61L2430/02B33Y80/00B33Y70/00B33Y10/00B29C64/165Y02P10/25B22F10/64B22F10/14B22F10/34B22F2003/241B22F2003/248B22F3/1007
Inventor 叶雷
Owner CHONGQING RUNZE PHARM CO LTD
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