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Galvano-chemistry bioactivation processing method of stephanoporate titanium bead sintered coating

An electrochemical biological activation treatment technology, applied in the field of electrochemical biological activation treatment, can solve the problems of weakening the three-dimensional structure of the titanium bead sintered coating, poor bonding ability, and affecting bone bonding 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

[0010] Place titanium beads with an average thickness of 750-850μm on the surface of the implant, move the processed implant into a vacuum furnace, and vacuum to 10 -2 Above Pa, heat up for sintering. The sintering system is: heating from room temperature to 1600°C at a rate of 1°C / min, holding at the sintering temperature for 0 hours, and then cooling from the sintering temperature to room temperature at a rate of 0.1°C / min, taking out the implantation of the sintered titanium bead coating Things. Put it into 2.5% distilled water (NaNO3+KNO 3 , NaNO3: KNO 3 =1:1, nitrate:methanol=1:50) In the methanol solution, use 35V voltage at 30°C for 5 hours, take out the implant, clean it with distilled water, medical alcohol, etc., and pack it.

Embodiment 2

[0012] Place titanium beads with an average thickness of 750-850μm on the surface of the implant, move the processed implant into a vacuum furnace, and vacuum to 10 -2 Above Pa, heat up for sintering. The sintering system is as follows: heating from room temperature to 1600°C at a rate of 100°C / min, holding at the sintering temperature for 0 hours, and then cooling from the sintering temperature to room temperature at a rate of 0.1°C / min, taking out the implantation of the sintered titanium bead coating Things. Put it into 2.5% distilled water (NaNO3+KNO 3 , NaNO3: KNO 3 =1:1, nitrate:methanol=1:50) In the methanol solution, use 35V voltage at 30°C for 5 hours, take out the implant, clean it with distilled water, medical alcohol, etc., and pack it.

Embodiment 3

[0014] Place titanium beads with an average thickness of 750-850μm on the surface of the implant, move the processed implant into a vacuum furnace, and vacuum to 10 -2 Above Pa, heat up for sintering. The sintering system is: heating from room temperature to 1600°C at a rate of 50°C / min, holding at the sintering temperature for 0 hours, and then cooling from the sintering temperature to room temperature at a rate of 0.1°C / min, taking out the implantation of the sintered titanium bead coating Things. Put it into 2.5% distilled water (NaNO3+KNO 3 , NaNO3: KNO 3 =1:1, nitrate:methanol=1:50) In the methanol solution, use 35V voltage at 30°C for 5 hours, take out the implant, clean it with distilled water, medical alcohol, etc., and pack it.

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PUM

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Abstract

The present invention relates to an electrochemical and biological activation processing method of a porous titanium coating. The method is as following. The titanium ball in accordance with the implanting requirements is arranged on the implant surface after cleaning the implant material. The average thickness of the titanium ball on the surface of the implant material is 750Mu m to 850 Mum. 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 1000 DEG C to 1600 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 nitrate methanol solution containing the distilled water of 0.1 percentages to 5 percentages. The implant material is processed under 0 DEG C to 60 DEG C for 0.1 hours to 10 hours with the voltage of 10V to 60v, when the implant material with the sintering titanium coating is taken as the anode. The implant material is taken out and cleaned before packaging.

Description

Technical field [0001] The invention relates to an electrochemical biological activation treatment method for a porous titanium bead sintered coating, and belongs to the field of powder metallurgy materials and biological materials. It is suitable for improving the performance of orthopedics, dentistry and other implants, especially to improve the bone ingrowth effect and osseointegration strength of implants. Background technique [0002] The coating technology of implants has gradually matured after more than 50 years of development. Taking artificial joints as an example, today’s mature processes mainly include air plasma spraying, vacuum plasma spraying, vacuum sintering and electrochemical processes. The coating materials mainly include titanium, hydroxyapatite (hereinafter referred to as HA) and a combination of both . At present, the main biological coating technology of biological artificial joints adopts vacuum sintering titanium coating and the technology of plasma spra...

Claims

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Application Information

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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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