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Surface porous bioactive implant and preparation method thereof

A bioactive, porous surface technology, applied in the field of medical bioimplantation materials, can solve the problems of high cost, short intraosseous healing period, complex preparation process, etc., and achieve the effects of early healing, high bonding strength, and simple process

Inactive Publication Date: 2015-06-10
JIANGSU TRAUSIM MEDICAL INSTR
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Problems solved by technology

[0003] In Chinese patent 200610136835.5 "a porous structure titanium implant and its preparation method", the porous outer layer is subjected to alkaline heat treatment, and biomimetic deposition of hydroxyapatite is carried out. Chinese patent 200710016777.7 "a preparation method of a composite material for a highly bioactive surface porous implant" Provides implant materials with good biocompatibility, firm bone integration, and short intraosseous healing period. Chinese patent 200410062209.1 "Method for preparing a bioactive porous structure on the surface of pure titanium dental implant" can achieve tight biochemical integration , to improve the clinical success rate of dental implants; all of them have the problems of complicated preparation process and high cost

Method used

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Embodiment Construction

[0018] Use pure titanium powder or titanium alloy powder to form microporous implants with a pore size of 10-250 μm by 3D printing technology; degrease the obtained microporous implants with 1% MICRO90 cleaning solution, and use 50wt%-75wt% concentrated sulfuric acid and 8wt%-20wt% concentrated hydrochloric acid was pickled at 50-80°C for 5-10min, and rinsed with water; then, 5 mol / L NaOH was used for alkali heat treatment at 80°C, and then in a vacuum of 0.1Pa Carried out in a vacuum sintering furnace, calcined at 400-700°C for 0.5-1.5h and then cooled with the furnace; then the obtained microporous implant was placed in simulated body fluid SBF, at a treatment temperature of 37.5°C, after mineralization for 1 - In 10 days, a hydroxyapatite coating with a thickness of less than 1 μm is formed on the surface, and the thickness is 0.01-20 μm; finally, the obtained microporous implants are ultrasonically cleaned with purified water for 5 minutes, and the packaging is cleaned afte...

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Abstract

The present invention relates to a surface porous bioactive implant and a preparation method thereof, a microporous implant with the aperture diameter of 10-250 mum is prepared from pure titanium powder or titanium alloy powder by 3D printing technology; the microporous implant is degreased and cleaned; 5mol / L NaOH is used for alkali heat treatment at 80 DEG C, and after sintering, the furnace cooling is performed; the obtained implant is placed in the simulated body fluid for mineralization at the processing temperature of 37.5 DEG C for 1-10 days to form a hydroxyapatite coating with the thickness of 0.01 to 20 mum on the surface; finally the obtained implant is ultrasonically cleaned for 5min by purified water, after flushing, the cleaning and packaging are performed; the complicated preparation process problem is solved, the three dimensional printing technology is simple, and the aperture diameter is adjustable and precise.

Description

technical field [0001] The invention belongs to the field of medical biological implant materials, in particular to a surface porous bioactive implant and a preparation method thereof. Background technique [0002] Titanium and titanium alloy materials have been used in human implants for more than 30 years, and are now the most important materials for orthopedic implants and dental implants. Titanium and titanium alloys are used as implant materials, especially permanent implant materials such as artificial joints, artificial intervertebral discs, dental implants, etc., which must directly interact with human tissue and the surface of the metal implant to make the implant and surrounding tissue Fusion and good osseointegration. With the development of biomedical engineering and surface treatment technology, the surface modification of titanium and titanium alloys through various modern technical means can greatly improve the biocompatibility, biological activity and corros...

Claims

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Application Information

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IPC IPC(8): A61L27/12A61L27/06A61L27/56B22F3/11
Inventor 罗志聪祝伟宁赖红昌
Owner JIANGSU TRAUSIM MEDICAL INSTR
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