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Method for obtaining bioactivity and open type stephanoporate titanium coating from implant surface

A bioactive and implant technology, applied in the direction of surface reaction electrolytic coating, coating, electrolytic coating, etc., can solve the problems of affecting pore size, affecting bonding force, affecting bone ingrowth effect and osseointegration strength, etc.

Active Publication Date: 2008-03-12
CHANGZHOU TIANLI BIOLOGICAL COATING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the above products only use vacuum sintered titanium coating, because they are still biologically inert, their bone ingrowth effect and osseointegration strength will be affected.
However, if ion spraying HA is used on the titanium coating, it will bring three problems: one is that the plasma spraying HA technology is complicated and the cost is higher; The three-dimensional structure of the space affects the pore size, thereby affecting the effect of bone ingrowth; third, the binding ability of HA and titanium is poor, and the complex three-dimensional structure of the titanium bead sintered coating further affects its binding force, and the titanium bead sintered coating Space is difficult to obtain a well-bonded HA layer, which affects the strength of osseointegration

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Place titanium beads with an average thickness of 750-850 μm on the surface of the implant, move the treated implant into a vacuum furnace, and evacuate to 10 -2 Above Pa, heat up and sinter. The sintering system is as follows: heat up from room temperature to 1600°C at a rate of 1°C / min, hold at the sintering temperature for 0 hours, then cool down from the sintering temperature to room temperature at a rate of 0.1°C / min, and take out the implanted sintered titanium bead coating. things. Put the treated implant into a 5N sodium hydroxide alkali solution, heat it to 70°C, soak for 50 hours, take out the implant coated with sintered titanium beads, and wash it with distilled water, medical alcohol, etc. Just pack it.

Embodiment 2

[0014] Place titanium beads with an average thickness of 750-850 μm on the surface of the implant, move the treated implant into a vacuum furnace, and evacuate to 10 -2 Above Pa, heat up and sinter. The sintering system is as follows: heat up from room temperature to 1600°C at a rate of 100°C / min, keep at the sintering temperature for 0 hours, then cool down from the sintering temperature to room temperature at a rate of 0.1°C / min, and take out the implanted sintered titanium bead coating. things. Put the treated implant into a 5N sodium hydroxide alkali solution, heat it to 70°C, soak for 50 hours, take out the implant coated with sintered titanium beads, and wash it with distilled water, medical alcohol, etc. Just pack it.

Embodiment 3

[0016] Place titanium beads with an average thickness of 750-850 μm on the surface of the implant, move the treated implant into a vacuum furnace, and evacuate to 10 -2 Above Pa, heat up and sinter. The sintering system is as follows: heat up from room temperature to 1600°C at a rate of 50°C / min, hold at the sintering temperature for 0 hours, then cool down from the sintering temperature to room temperature at a rate of 0.1°C / min, and take out the implanted sintered titanium bead coating. things. Put the treated implant into a 5N sodium hydroxide alkali solution, heat it to 70°C, soak for 50 hours, take out the implant coated with sintered titanium beads, and wash it with distilled water, medical alcohol, etc. Just pack it.

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PUM

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Abstract

The present invention relates to an open-typed porous titanium coating method, which acquires the biological activity on the implant surface. The present invention is applicable for the biological fixing-typed implants in the orthopedics and dentistry, which can improve the bone growth effect of the implant and the Osseo integration strength. The method is that the titanium ball in accordance with the implanting requirements is arranged on the implant surface after cleaning the implant material. The processed implant material is transported to the vacuum furnace, which is vacuum pumped till above 10-2 Pa before heating and sintering. The sintering method is as following. The room temperature is heated to the sintering temperature of 1,000 DEG C to 1,600 DEG C at the speed of 1 DEG C per minute to 100 DEG C per minute. The temperature is maintained for 0 hour to 10 hours. The temperature reduces from the sintering temperature to the room temperature at the speed of 0.1 DEG C per minute to 100 DEG C per minute. The implant material with the sintering titanium coating is taken out and put into the alkali solution with the concentration from 0.1N to 10N, before heating till 40 DEG C to 100 DEG C. The implant material is soaked for 0.5 hours to 100 hours before cleaning by the distilled water and the medical alcohol. The last step is packaging.

Description

technical field [0001] The invention relates to a method for obtaining biologically active and open porous titanium coatings on the surface of implants, belonging to the fields of powder metallurgy materials and biological materials. It is suitable for biofixed orthopedic, dental and other implants, which can improve the bone ingrowth effect of the implant and improve the osseointegration strength. Background technique [0002] Implant coating technology has gradually matured after more than 50 years of development. Taking artificial joints as an example, the current mature processes mainly include air plasma spraying process, vacuum plasma spraying process, vacuum sintering process and electrochemical process. The coating materials mainly include titanium, hydroxyapatite (hereinafter referred to as HA) and the composite of the two. . At present, the main bio-coating technology of bio-artificial joints adopts the technology of vacuum sintering titanium coating and plasma s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/30A61L31/08B22F7/02C25D11/26
Inventor 王蕾孙晓华陈敏
Owner CHANGZHOU TIANLI BIOLOGICAL COATING TECH
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