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Composite bioactivity functional coating

A bioactive, composite structure technology, applied in the direction of coating, etc., can solve the problems of hydroxyapatite or β-TCP coating shedding, insufficient bonding strength of hydroxyapatite or β-TCP coating and titanium coating, etc.

Active Publication Date: 2013-04-17
苏州宸泰医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing problem is that the bonding strength between the hydroxyapatite or β-TCP coating and the titanium coating is not enough, and there may be a problem that the hydroxyapatite or β-TCP coating falls off

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The titanium alloy joint handle was sandblasted with alumina with a particle size of 50 mesh for 4 minutes to make the surface rough and remove the surface layer. Then put it into the plasma vacuum chamber, evacuate to 0.133Pa, and then fill it with Ar. The spray gun is 300mm away from the joint handle, and the plasma preheats the joint handle for 4 minutes, reaching about 400°C, and the plasma sputtering is cleaned for 4 minutes, and the 300-mesh Ti powder is fed by the powder feeder and sprayed to a 25μm dense layer at a voltage of 60V and 600A. , and then spray 60-mesh tantalum powder to a porous layer with a thickness of 100 μm and an average pore diameter of 200 μm at 60V and 600A. 60-mesh β-TCP powder is used for spraying β-TCP on the outer layer. The spraying thickness is 50 μm under 60V and 600A, and the average pore size is 150 μm.

[0025] After cooling, the titanium alloy joint handle sprayed with the bioactive coating of the composite structure is taken out...

Embodiment 2

[0027] The titanium alloy joint handle was sandblasted with alumina with a particle size of 50 mesh for 4 minutes to make the surface rough and remove the surface layer. Then put it into the plasma vacuum chamber, evacuate to 0.133Pa, and then fill it with Ar. The spray gun is 300mm away from the joint handle, and the plasma preheats the joint handle for 4 minutes, reaching about 400°C, and the plasma sputtering is cleaned for 4 minutes, and the 300-mesh Ti powder is fed by the powder feeder and sprayed to a 25μm dense layer at a voltage of 60V and 600A. , and then sprayed with 150 mesh Ti powder at 60V and 600A to a porous layer with a thickness of 50 μm and an average pore diameter of 150 μm, and then sprayed with 60 mesh tantalum powder at 60V and 600A to a porous layer with a thickness of 100 μm and an average pore diameter of 200 μm. 60-mesh β-TCP powder is used for spraying β-TCP on the outer layer. The spraying thickness is 50 μm under 60V and 600A, and the average pore...

Embodiment 3

[0030] The titanium alloy joint handle was sandblasted with alumina with a particle size of 50 mesh for 4 minutes to make the surface rough and remove the surface layer. Then put it into the plasma vacuum chamber, evacuate to 0.133Pa, and then fill it with Ar. The spray gun is 300mm away from the joint handle, and the plasma preheats the joint handle for 4 minutes, reaching about 400°C, and the plasma sputtering is cleaned for 4 minutes, and the 300-mesh Ti powder is fed by the powder feeder and sprayed to a 35 μm dense layer at a voltage of 60V and 600A. , and then sprayed with 150 mesh Ti powder at 60V and 600A to a porous layer with a thickness of 60 μm and an average pore diameter of 150 μm, and then sprayed with 60 mesh tantalum powder at 60V and 600A to a porous layer with a thickness of 80 μm and an average pore diameter of 200 μm. 60-mesh β-TCP powder is used for spraying β-TCP on the outer layer, and the spraying thickness is 80 μm under 60V and 600A, and the average ...

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PUM

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Abstract

The invention discloses a composite bioactivity functional coating, in particular a composite bioactivity functional coating positioned on a metal base body. The composite bioactivity functional coating comprises a first titanium metal coating positioned on the metal base body, a tantalum metal coating positioned on the first titanium metal coating and a hydroxyapatite or beta-TCP (tricalcium phosphate) bioactivity coating positioned on the tantalum metal coating.

Description

technical field [0001] The invention relates to a composite structure bioactive functional coating, in particular to a composite structural bioactive functional coating used on a prosthesis for joint replacement. Background technique [0002] In the field of joint replacement, in order to enhance the long-term stability of the joint prosthesis, a porous titanium coating is generally applied on the surface of the metal prosthesis, and the bone tissue grown into the pores of the porous titanium coating is used for biological fixation. effect. In addition, in order to promote bone tissue ingrowth, a hydroxyapatite or β-TCP coating that can induce bone tissue ingrowth is often applied on the porous titanium coating. [0003] Currently, in this field, a plasma spraying process is mainly used to apply a hydroxyapatite coating or a β-TCP coating on a porous titanium coating. The existing problem is that the bonding strength between the hydroxyapatite or β-TCP coating and the tita...

Claims

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Application Information

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IPC IPC(8): A61L27/30
Inventor 田杰谟曹小刚张琳
Owner 苏州宸泰医疗器械有限公司
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