Biomedical titanium surface modifying method

A surface modification, biomedical technology, applied in the field of preparation of biomedical materials, can solve the problems of limited improvement of biological performance, destruction of matrix morphology, etc.

Active Publication Date: 2016-09-28
梁春永
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the traditional alkali treatment reaction is time-consuming, usually 24 to 48 hours, and some require high-temperature calcination in th

Method used

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  • Biomedical titanium surface modifying method
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  • Biomedical titanium surface modifying method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Select pure titanium samples (10mm*10mm*1mm) for physical polishing and chemical polishing in sequence:

[0041] Physical polishing: Grinding 4 times, the number of sandpaper mesh is 800, 1000, 1500 and 2000 in turn.

[0042] Chemical polishing: use 200ml of aqueous solution containing 3wt% HF and 0.02wt‰ potassium perfluorooctane sulfonate as the polishing solution, and the polishing time is 2 minutes, then use acetone, ethanol and deionized water to fully immerse ultrasonic cleaning for 3 minutes, and dry ;

[0043] (2) Femtosecond laser processing: Polished pure titanium sample is used, the processing parameters are: defocus amount 0um, scanning distance 30um, power 100mw, scanning speed 0.8mm / s, and the speed direction is perpendicular to the light polarization direction . Then at room temperature, use acetone, ethanol and deionized water to ultrasonically clean in sequence, acetone for 1 minute, ethanol and deionized water for 2 minutes each, and dry. Surfac...

Embodiment 5~26

[0051] Embodiments 5 to 26: According to the same method as in Embodiment 1, the defocus amount, scanning distance, power, and alkali treatment solution concentration of laser processing were changed. In order to avoid redundant description, it is omitted here.

[0052] table 3

[0053]

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PUM

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Abstract

The invention belongs to the preparation field of biomedical materials, and provides a preparation method of surface-modified biomedical pure titanium. The method comprises three steps of polishing, femtosecond laser processing and alkali treatment, and also can perform SBF dipping to further improve biological activity; and a surface structure prepared by the method can keep original appearance in subsequent alkali treatment process, and is converted from surface dewatering to surface water loving to improve the integrating capacity of biomedical titanium materials and bone tissues so as to be applied to sclerous tissue replacement materials.

Description

technical field [0001] The invention belongs to the field of preparation of biomedical materials, and in particular relates to a preparation method of surface-modified biomedical pure titanium. Background technique [0002] With its light weight, excellent specific strength, corrosion resistance and good mechanical properties, titanium and its alloys occupy a dominant position in the application of dental implants, artificial bones, artificial joints, orthopedic steel plates, and become human hard tissue substitutes. and materials of choice for restorations. Femtosecond laser processing of titanium surface has a good application in cardiovascular stents, but only after femtosecond laser processing, the surface without any post-treatment has a superhydrophobic structure, which is not conducive to the growth of osteoblasts, and titanium and its alloys As a biologically inert material, although it has good biocompatibility with bone, its composition is completely different f...

Claims

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Application Information

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IPC IPC(8): B23K26/00A61L27/06A61L27/32A61L31/02A61L31/08
CPCA61L27/06A61L27/32A61L31/022A61L31/086A61L2400/18A61L2420/02B23K26/352
Inventor 梁春永
Owner 梁春永
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