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Preparation method of bioelectricity activity implant with multistage composite structure

A composite structure and bioelectric technology, applied in the direction of prosthesis, electrolytic coating, superimposed layer plating, etc., can solve the problem of poor biological activity of the coating, and achieve the effect of strong interface binding force, improved biological activity, and tight combination

Active Publication Date: 2017-05-10
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of poor biological activity of the prepared coating in the existing method for preparing macroscopic / microscopic dual-level pore structure bioactive micro-arc oxidation ceramic coatings, and to provide a bioelectric coating with a multi-level composite structure. A method for preparing active implants, which uses tin dioxide nanorods and micro-arc oxidation coatings to give implants bioelectric activity

Method used

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  • Preparation method of bioelectricity activity implant with multistage composite structure
  • Preparation method of bioelectricity activity implant with multistage composite structure
  • Preparation method of bioelectricity activity implant with multistage composite structure

Examples

Experimental program
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Effect test

Embodiment 1

[0037] 1) One-time micro-arc corrosion oxidation: Add the electrolyte solution containing chloride ions into the stainless steel tank, put the titanium sample into the electrolyte solution containing chloride ions at 20°C, use the titanium sample as the positive electrode, and use the stainless steel tank body As the negative electrode, perform micro-arc oxidation. The parameters of micro-arc oxidation are as follows: under the conditions of current 4A, working frequency 900 Hz and duty cycle 15%, micro-arc oxidation is performed for 15 minutes to obtain a titanium sample with grooves on the surface; Wherein, the electrolyte solution containing chloride ions is prepared by adding sodium chloride and sodium hydroxide to water, the concentration of sodium hydroxide in the electrolyte solution is 0.01mol / L, and the concentration of sodium chloride is 0.5mol / L. The titanium sample is TA2 industrial pure titanium;

[0038] 2) Secondary micro-arc oxidation treatment: NaOH and β-C 3...

Embodiment 2

[0043] 1) One-time micro-arc corrosion oxidation: Add the electrolyte solution containing chloride ions into the stainless steel tank, put the titanium sample into the electrolyte solution containing chloride ions at 30°C, use the titanium sample as the positive electrode, and use the stainless steel tank body As the negative electrode, perform micro-arc oxidation. The parameters of micro-arc oxidation are as follows: under the conditions of current being 5A, operating frequency being 700Hz and duty ratio being 4%, micro-arc oxidation is carried out for 5min to obtain a titanium sample with grooves on the surface; Wherein, the electrolytic solution containing chloride ions is prepared by adding potassium chloride and sodium hydroxide to water, the concentration of sodium hydroxide in the electrolytic solution is 0.1 mol / L, and the concentration of potassium chloride is 0.08 mol / L. The titanium sample is TA3 industrial pure titanium;

[0044] 2) Secondary micro-arc oxidation tr...

Embodiment 3

[0048] 1) One-time micro-arc corrosion oxidation: Add the electrolyte solution containing chloride ions into the stainless steel tank, put the titanium sample into the electrolyte solution containing chloride ions at 40°C, use the titanium sample as the positive electrode, and use the stainless steel tank body As the negative electrode, perform micro-arc oxidation. The parameters of micro-arc oxidation are as follows: under the conditions of current of 7A, operating frequency of 400Hz and duty cycle of 10%, micro-arc oxidation is performed for 10 minutes to obtain a titanium sample with grooves on the surface; Wherein, the electrolytic solution containing chloride ions is prepared by adding potassium chloride and sodium hydroxide to water, the concentration of sodium hydroxide in the electrolytic solution is 0.5 mol / L, and the concentration of potassium chloride is 0.01 mol / L. The titanium sample is TA4 industrial pure titanium;

[0049] 2) Secondary micro-arc oxidation treatm...

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Abstract

The invention discloses a preparation method of a bioelectricity activity implant with a multistage composite structure. A titanium sample is positioned in a stainless steel tank with electrolyte for corrosion microarc oxidation to generate a surface groove structure; the titanium sample with the groove performs general microarc oxidation; and the prepared microarc oxidation titanium sample with the groove in the surface is put in a reaction kettle for hydrothermal growth of nanorod tin dioxide. The obtained bioelectricity activity implant with the multistage composite structure has a three-grade surface structure of millimeter-stage grooves, micron-stage multiple holes and nanorods; the groove is formed in the surface of the sample macroscopically; microscopically, the surface of the sample is totally covered by a coating layer with a double-layer composite structure; the inner layer is titanium dioxide with a microscopic porous structure; and the surface layer is the nanorod tin dioxide. No discontinuous interface is formed between the coating layer structure and the matrix; bone-like apatite can be formed in a simulated body fluid environment through quick induction; and the bioactivity is excellent. The preparation method can be used for preparing the bioelectricity activity implant with the multistage composite structure.

Description

technical field [0001] The invention relates to the technical field of metal surface modification, in particular to a method for preparing a bioelectrically active implant with a multilevel composite structure. Background technique [0002] Titanium and titanium alloys are widely used medical implant materials, but titanium and titanium alloys are biologically inert in application and do not have osteoinductive ability. Micro-arc oxidation technology is a common method for bioactive modification of titanium surface. By adjusting the composition of the electrolyte and controlling the parameters of the electrical process, the structure of the coating can also be adjusted to endow the coating with different functions. This is the use of plasma chemical and electrochemical reactions involved in the method, and the deposition of colloidal particles. Studies have shown that the multi-level structure on the surface of the implant can interact with bone tissue at different scales, ...

Claims

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Application Information

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IPC IPC(8): C25D11/26C23C18/12C23C28/04A61L27/56A61L27/06A61L27/30A61L27/54
CPCA61L27/06A61L27/306A61L27/54A61L27/56C23C18/1216C23C28/042C25D11/024C25D11/26A61L2420/08
Inventor 周睿憨勇靳国瑞李明
Owner XI AN JIAOTONG UNIV
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