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Method for preparing medical metal implant material multi-hole niobium

An implant material, a technology of porous niobium, applied in the field of preparation of porous niobium implant materials, can solve the problems of reduced biological safety, insufficient purity of finished products, carbon skeleton residues, etc., to achieve reduced impurity content, good mechanical properties, optimized The effect of process conditions

Active Publication Date: 2013-12-25
CHONGQING RUNZE PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitations of its preparation method, the purity of the obtained finished product is not enough, and there are carbon skeleton residues, resulting in a decrease in biological safety

Method used

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  • Method for preparing medical metal implant material multi-hole niobium
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  • Method for preparing medical metal implant material multi-hole niobium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: Weigh 12.5 g of polyvinyl alcohol and put it into a container with 240 ml of distilled water; place it on an electric furnace to heat and stir to make it an aqueous solution of polyvinyl alcohol. Use a 200g balance to weigh 60g of niobium powder with an average particle size of less than 43 microns and an oxygen content of less than 0.1% and 5.3g of starch, add 15m1 of cooled polyvinyl alcohol aqueous solution, stir and mix evenly, and make it a mixed slurry. Use 10×10×30mm porous polyurethane foam (average pore diameter is 0.48mm, density 0.025g / cm 3 , hardness 50°) into it and pour until the pores of the polyurethane foam are filled with slurry, then use clips to take out the polyurethane foam that has absorbed the slurry and put it into a porcelain plate. Dry in a vacuum drying oven at a drying temperature of 70° C., a drying time of 8 hours, and a vacuum degree of 1 Pa. Degreasing treatment: the vacuum degree is lower than 1×10 -3 pa, the temperature is...

Embodiment 2

[0035] Example 2: Weigh 10 g of polyvinyl alcohol and put it into a container with 200 ml of distilled water; place it on an electric stove to heat and stir to make it into an aqueous solution of polyvinyl alcohol. Use a 200g balance to weigh 40g of niobium powder with an average particle size of less than 43 μm and an oxygen content of less than 0.1% and 2.6g of starch, add 10ml of polyvinyl alcohol aqueous solution, stir and mix evenly, and make it a mixed slurry. Use 10×10×25mm porous polyurethane foam (average pore diameter is 0.56mm, density 0.030g / cm 3 , hardness 60 0 ) into it and pour until the pores of the polyurethane foam are filled with the slurry, and the polyurethane foam that has absorbed the slurry is taken out with a clip and put into a porcelain plate. Dry in a vacuum drying oven, the drying temperature is 70 ° C, the drying time is 6 hours, and the vacuum degree is kept at 1×10 -2 Pa. Degreasing treatment: the vacuum degree is lower than 1×10 -3 pa, the ...

Embodiment 3

[0038] Example 3: Weigh 11 g of polyvinyl alcohol and put it into a container with 220 ml of distilled water; place it on an electric furnace to heat and stir to make it an aqueous solution of polyvinyl alcohol. Use a 200g balance to weigh 45g of niobium powder with an average particle size of less than 43μm and an oxygen content of less than 0.1% and 2.8g of starch, add 12m1 of polyvinyl alcohol aqueous solution, stir and mix evenly, and make it a mixed slurry. Use 8×8×25mm porous polyurethane foam (average pore diameter is 0.70mm, density 0.035g / cm 3 , hardness 70°) into it and pour until the pores of the polyurethane foam are filled with slurry, then use a clamp to take out the polyurethane foam filled with niobium powder slurry and put it into a porcelain plate. Dry in a vacuum drying oven, the drying temperature is 75 ° C, the drying time is 6 hours, and the vacuum degree is kept at 1×10 -1 pa. Degreasing treatment: the vacuum degree is lower than 1×10 -3 pa, the tempe...

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Abstract

Disclosed is a method for preparing medical metal implant material multi-hole niobium. A solution is obtained by adopting polyvinyl alcohol as an organic binding agent and distilled water as a dispersing agent, and mixed with mixed powder of starch and niobium powder with the mean grain size smaller than 43 micrometers and the oxygen content smaller than 0.1% to obtain a niobium powder sizing agent which is poured into an organic foamed body, then, the niobium powder sizing agent is dried, the dispersing agent in the organic foamed body with the poured niobium sizing agent is removed, under the inert gas shielding atmosphere, the ungrease treatment is carried out to remove the organic binding agent and the organic foamed body, sintering is carried out in vacuum to obtain a multi-hole sintering body, and then annealing in the vacuum and conventional postprocessing are carried out to obtain the multi-hole niobium. In the mixed powder of the metal niobium powder and the starch, the content of the starch is 5-10%. The obtained medical metal implant material multi-hole niobium has excellent biological compatibility and biological safety, meanwhile, the multi-hole niobium is of a sintering-neck structure, the mechanical performance like the malleability of the multi-hole niobium is improved, and according to the method, the multi-hole niobium can be conveniently and effectively implanted into medical metal.

Description

[0001] The application of the present invention is a divisional application with the application number 201010563420.2, the application date of November 29, 2010, and the title of the invention "Preparation Method of Porous Material for Medical Metal Implantation". technical field [0002] The invention relates to a preparation method of a medical metal implant material, in particular to a preparation method of porous niobium as a medical metal implant material, in particular to a preparation method of a porous niobium implant material suitable for light-bearing parts of a human body. Background technique [0003] Porous medical metal implant materials have important and special purposes such as treating bone tissue trauma and femoral tissue necrosis. The common materials of this type include porous 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...

Claims

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Application Information

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