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Method for preparing porous tantalum medical implant material

An implant material, porous tantalum technology, applied in medical science, prosthesis, etc., can solve problems such as unsatisfactory needs, achieve the effect of ensuring biocompatibility and biosafety, simple process, and simple preparation method

Active Publication Date: 2014-04-02
CHONGQING RUNZE PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, high requirements are placed on the molding technology, and the traditional molding technology cannot meet the needs due to the limitation of the preparation process

Method used

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  • Method for preparing porous tantalum medical implant material
  • Method for preparing porous tantalum medical implant material
  • Method for preparing porous tantalum medical implant material

Examples

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Embodiment 1

[0024] A preparation method of a porous tantalum medical implant material is carried out as follows:

[0025] a. Mix pure tantalum powder (powder particle size 8-10 μm) with methyl cellulose aqueous solution with a mass percent concentration of 4% at a mass ratio of 7:1, stir well and evenly, and prepare a tantalum powder slurry;

[0026] b. Put the fully three-dimensionally connected polymer template bracket with a porosity of 20% to 50% into the steel mold, then pour the prepared tantalum powder slurry into the steel mold and flow over the polymer template bracket Finally, apply pressure slowly and evenly around the steel mold so that the tantalum powder is fully filled into the polymer template. The applied pressure is increased from 0MPa to 10Mpa at a constant speed, and the time used for the pressurization process is 5h, so that the tantalum powder particles and The particles are closely combined with each other, and the moisture in the tantalum powder slurry seeps out of...

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Abstract

The invention discloses a method for preparing a porous tantalum medical implant material. The method comprises the following steps: uniformly mixing pure tantalum powder and an adhesive to obtain tantalum powder slurry; putting a polymer resin template stent which has the porosity of 20-50 percent and is completely in three-dimensional connection into a steel mold, pouring the prepared tantalum powder slurry into the steel mold, and allowing the slurry to spill over the polymer resin template stent; slowly and uniformly pressurizing the periphery of the steel mold, so that the tantalum powder is fully and completely filled in the polymer resin template stent, the applied pressure is increased from 0MPa to 8-12MPa at a constant speed, and the used time in the pressurization process is 2-5 hours; removing the polymer resin template stent through chemical dissolution, thereby obtaining a porous tantalum blank framework; and finally, degreasing, sintering, cooling and performing after-treatment to obtain the biomedical porous tantalum implant material. The prepared porous tantalum implant material is high in biocompatibility and excellent in mechanical property.

Description

[0001] The application of the present invention is a divisional application with application number 201210021891.X, application date January 31, 2012, and the title of the invention "a method for preparing a porous tantalum medical implant material". technical field [0002] The invention relates to the field of preparation of a porous tantalum medical metal implant material, in particular to a molding preparation of a porous tantalum medical metal implant material that replaces the bone tissue of a load-bearing part. Background technique [0003] Porous medical metal implant materials are used to replace relevant tissues of the human body, and have good therapeutic prospects. For example, they have important and special uses such as the treatment of bone tissue trauma and femoral tissue necrosis. Now such materials are metal stainless steel, porous metal titanium, etc. , porous tantalum, etc. As a porous implant material used in the treatment of bone tissue trauma and femor...

Claims

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Application Information

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IPC IPC(8): A61L27/56A61L27/04C22C1/08C22C27/02
Inventor 叶雷
Owner CHONGQING RUNZE PHARM CO LTD
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