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Method for preparing micro-nanostructure on surface of titanium implant

A technology of micro-nano structure and titanium implants, applied in surface reaction electrolytic coatings, electrolytic coatings, coatings, etc., can solve the problems of complex operation, environmental pollution, high cost, simple process equipment, short reaction time, pro- The effect of water performance increase

Active Publication Date: 2013-02-06
百齿泰(厦门)医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the concentrations of hydrochloric acid and sulfuric acid used are relatively large, which will inevitably cause a large amount of volatilization of hydrochloric acid at higher temperatures, causing environmental pollution. At the same time, the cost of double acid etching is complicated and expensive.
Chinese patent CN200910248898.3 discloses "a method for preparing a porous structure on the surface of a pure titanium dental implant". The temperature is 40-70°C, the temperature is not high so that the volatilization of hydrochloric acid is relatively small, but it can only produce surface depressions formed by sandblasting on the surface

Method used

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  • Method for preparing micro-nanostructure on surface of titanium implant
  • Method for preparing micro-nanostructure on surface of titanium implant
  • Method for preparing micro-nanostructure on surface of titanium implant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Put medical titanium in a sandblasting machine, use 100-mesh ceramic sand, 0.4MPa air pressure, 0.5cm distance, and an inclination angle of 30° for sandblasting;

[0025] 2) After sandblasting, the samples were placed in acetone, ethanol and deionized water for ultrasonic treatment for 15 minutes;

[0026] 3) After cleaning, the sample is suspended in a mixed solution with a mass fraction of 30% sulfuric acid, 1% hydrochloric acid, 1% nitric acid, 0.02 g / L perfluorooctane sulfonate potassium, and deionized water as the rest. Etching treatment for 90min;

[0027] 4) The sample after acid etching was used as an anode, placed in a 0°C solution containing 1g / L sodium dihydrogen phosphate and 3g / L ammonium fluoride, and anodized at 30V for 10 minutes;

[0028] 5) Rinse with plenty of water, dry and cool to constant weight.

[0029] The scanning electron microscope image of the sample after sandblasting and acid etching prepared in Example 1 is magnified at 3000 times. ...

Embodiment 2

[0036] 1) Put the medical titanium in the sandblasting machine, and use 150 mesh ceramic sand particles, 0.4MPa air pressure, 0.5cm distance and an inclination angle of 45° for sandblasting;

[0037] 2) After sandblasting, the samples were placed in acetone, ethanol and deionized water for ultrasonic treatment for 15 minutes;

[0038] 3) After cleaning, the sample is suspended in a mass fraction of 30% sulfuric acid, 3% hydrochloric acid, and 1% HNO 3 , potassium perfluorooctane sulfonate is 0.06g / L, and the rest is deionized water mixed solution, acid etching treatment at 60°C for 80min;

[0039] 4) The sample after acid etching was used as an anode, placed in a 10°C solution containing 2g / L sodium dihydrogen phosphate and 5g / L ammonium fluoride, and anodized at 30V for 8 minutes;

[0040] 5) Rinse with plenty of water, dry and cool to constant weight.

Embodiment 3

[0042] 1) Put medical titanium in a sandblasting machine, and use 300 mesh ceramic sand, 0.5MPa air pressure, 1cm distance, and an inclination angle of 45° for sandblasting;

[0043] 2) After sandblasting, the samples were placed in acetone, ethanol and deionized water for 10 minutes of ultrasonic treatment in sequence;

[0044] 3) After cleaning, the sample is suspended in a mixed solution with a mass fraction of 40% sulfuric acid, 3% hydrochloric acid, 2% nitric acid, 0.03 g / L perfluorooctane sulfonate potassium, and deionized water as the rest. Etching treatment for 60min;

[0045] 4) The sample after acid etching was used as an anode, placed in a 20°C solution containing 3g / L sodium dihydrogen phosphate and 8g / L ammonium fluoride, and anodized at 20V for 6 minutes;

[0046]5) Rinse with plenty of water, dry and cool to constant weight.

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Abstract

The invention discloses a method for preparing a micro-nanostructure on the surface of a titanium implant and relates to a titanium implant. According to the provided method for preparing the micro-nanostructure on the surface of the titanium implant, the surface of the titanium implant is subjected to sand blasting and large-grit etching to form micron morphology; and on the basis of retaining the micron morphology, the nanoscale morphology is constructed by anodic oxidation and two morphologies are compounded and overlapped. The method comprises the following steps of: feeding medical pure titanium into a sand blasting machine for carrying out sand blasting treatment; carrying out ultrasonic treatment on the sample subjected to sand blasting treatment; feeding the sample subjected to ultrasonic treatment in a mixed solution of sulfuric acid, hydrochloric acid, nitric acid and water for carrying out acid etching treatment; and taking the sample subjected to acid etching treatment as an anode, feeding the sample in an anodic oxidation liquid for carrying out anodic oxidation treatment, flushing, drying and cooling to constant weight to obtain the titanium implant of which the surface is of a micro-nanostructure. The method has the advantages of abundant and uniform morphologies, favorable bonding strength of a film layer and a matrix, simple process equipment, short reaction time and facilitation for industrial production.

Description

technical field [0001] The invention relates to a titanium implant, in particular to a method for preparing a micro-nano structure on the surface of the titanium implant with a multi-level micro-nano structure formed on the surface of the titanium implant. Background technique [0002] Due to its good biocompatibility, titanium is widely used as a biomaterial in implants, such as artificial joints, intramedullary nails, dental implants, etc. How to make biomaterials achieve short-term loading and long-term stability after implantation has high requirements on the properties of biomaterials and their surface and interface. Scholars believe that the surface of the material has a certain characteristic micron-scale topography, which will help increase the specific surface area of ​​the material, facilitate the differentiation of osteoblasts and the mineralization of the extracellular matrix on the surface, and also provide a suitable scaffold for cell growth. , to increase the...

Claims

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Application Information

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IPC IPC(8): C23F17/00C23F1/26C25D11/26
Inventor 王周成陈彦文林志雄
Owner 百齿泰(厦门)医疗科技有限公司
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