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Titanium implant with bionic electro-active coating and preparation method thereof

A technology of active coating and bionic electricity, applied in the field of biomedical implant materials, can solve problems such as being harmful to the human body and insufficient biological activity of the coating, and achieve the effect of promoting osseointegration, excellent bonding stability and maintaining electrical properties

Pending Publication Date: 2021-05-14
PEKING UNIV SCHOOL OF STOMATOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the technical problem that the biological activity of the existing titanium implant coating is insufficient or harmful to the human body, and provides a titanium implant with a solidly bonded bionic electroactive coating and the coating is harmless to the human body and its preparation method

Method used

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  • Titanium implant with bionic electro-active coating and preparation method thereof
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  • Titanium implant with bionic electro-active coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Firstly, the conventional medical pure titanium cylinder is made of SiO 2 The particles were sand blasted under the pressure of 0.4MPa, and then sprayed with 10% H 2 SO 4 Acid etching with 10% HCl mixed solution for 30min at a constant temperature of 60°C;

[0031] (2) Put the nano-barium titanate particles into the dopamine aqueous solution, heat and stir in a 60-degree water bath for 12 hours, and obtain the barium titanate nano-particle filler after centrifugal drying;

[0032] (3) take appropriate amount of barium titanate nanoparticle filler (BaTiO) prepared in step (2) 3 ) was dispersed in 3ml of an organic solvent (such as DMF), and stirred for 3 hours by stirring combined with ultrasonic vibration to obtain a barium titanate particle filler dispersion;

[0033] (4) Take 1 g of polymer (such as P(VDF-TrFE)) powder and disperse it in 7ml of organic solvent (such as DMF), stir for 3 hours to completely dissolve it, and form a polymer (such as P(VDF-TrFE)) so...

Embodiment 2

[0041] (1) Firstly, the conventional medical pure titanium cylinder is made of SiO 2 The particles were sand blasted under the pressure of 0.4MPa, and then sprayed with 10% H 2 SO 4 Acid etching with 10% HCl mixed solution for 60min at a constant temperature of 60°C;

[0042] (2) Nano strontium titanate (SrTiO 3 ) particles into the dopamine aqueous solution, heated and stirred in a 60-degree water bath for 12 hours, and obtained barium titanate nanoparticle filler after centrifugal drying;

[0043] (3) Disperse an appropriate amount of the strontium titanate nanoparticle filler prepared in step (2) in 3ml of an organic solvent (such as DMF), and stir for 6 hours with stirring combined with ultrasonic vibration to obtain a barium titanate particle filler dispersion;

[0044] (4) Take 1 g of polymer (such as P(VDF-TrFE)) powder and disperse it in 7ml of organic solvent (such as DMF), stir for 6 hours to completely dissolve it, and form a polymer (such as P(VDF-TrFE)) solutio...

Embodiment 3

[0052] (1) Firstly, the conventional medical pure titanium cylinder is made of SiO 2 The particles were sand blasted under the pressure of 0.4MPa, and then sprayed with 10% H 2 SO 4 Acid etching with 10% HCl mixed solution for 10 minutes at a constant temperature of 60°C;

[0053] (2) Put nano potassium sodium niobate (KNN) particles into dopamine aqueous solution, heat and stir in a 60-degree water bath for 12 hours, and obtain barium titanate nanoparticle filler after centrifugal drying;

[0054] (3) Disperse an appropriate amount of potassium sodium niobate nanoparticle filler (KNN) prepared in step (2) in 3ml of an organic solvent (such as DMF), and stir for 3 hours by stirring combined with ultrasonic vibration to obtain a barium titanate particle filler dispersion;

[0055] (4) Take 1 g of polymer (such as P(VDF-TrFE)) powder and disperse it in 7ml of organic solvent (such as DMF), stir for 3 hours to completely dissolve it, and form a polymer (such as P(VDF-TrFE)) sol...

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Abstract

The invention relates to a titanium implant with a bionic electro-active coating and a preparation method, and solves the technical problem that an existing titanium implant coating is insufficient in biological activity or harmful to a human body, the titanium implant with the bionic electro-active coating is provided with the coating, the coating contains a filler and a polymer matrix, the filler is piezoelectric ceramic nano-particles, the matrix is a ferroelectric high-molecular polymer, the piezoelectric ceramic particles are uniformly dispersed in the ferroelectric polymer, and the invention also provides a preparation method of the titanium implant, so that the bionic electro-active coating can be firmly combined with the titanium surface. The method can be applied to the field of surface functional design and preparation of titanium implant materials.

Description

technical field [0001] The invention relates to a biomedical implant material, in particular to a titanium implant with a bionic electroactive coating and a preparation method. Background technique [0002] Medical metal titanium (Ti) and its alloys are widely used in the field of medical implants due to their good chemical stability and excellent biocompatibility. However, the surface of titanium implant lacks biological activity, and it is only purely mechanically fitted with bone tissue, which may easily lead to unsatisfactory osseointegration and cause loosening, infection and shedding of the implant. [0003] Studies have shown that improving the surface activity of titanium and its alloys can promote osseointegration. Scholars at home and abroad have tried many physical and chemical methods to improve the surface activity of titanium and its alloys, including surface modification and activation coating. Surface modification methods such as sandblasting, acid etching, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/06A61L27/56A61L27/30A61L27/34A61L27/50C25D11/26
CPCA61L27/06A61L27/56A61L27/306A61L27/34A61L27/50C25D11/26C25D11/026A61L2430/02C08L27/16
Inventor 张学慧邓旭亮白云洋孙晓雯王博
Owner PEKING UNIV SCHOOL OF STOMATOLOGY
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