Unlock instant, AI-driven research and patent intelligence for your innovation.

tizrnb hip joint prosthesis and preparation method thereof

A hip joint prosthesis, alloy matrix technology, applied in the direction of prosthesis, medical science, coating, etc., can solve the problem of insufficient bonding strength of hydroxyapatite or β-TCP coating and titanium coating, hydroxyapatite or β-TCP coating peeling off and other problems

Active Publication Date: 2015-08-19
苏州宸泰医疗器械有限公司
View PDF5 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The Ti13Nb13Zr alloy joint shank with an elastic modulus of 65GPa 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 to about 400°C, and the plasma sputtering cleans for 4 minutes. The 300-mesh Ti13Nb13Zr powder is fed by the powder feeder and sprayed to a 25μm dense layer at a voltage of 60V and 600A. The outer layer is sprayed with β-TCP powder of 60 meshes, sprayed at 60V and 600A with a thickness of 50 μm and an average pore size of 150 μm.

[0019] After cooling, the Ti13Nb13Zr alloy joint handle sprayed with bioactive composite coating was taken out. According to ISO13779-4, the bond strength of β-TCP coating is 35MPa.

Embodiment 2

[0021] The Ti13Nb13Zr alloy joint shank with an elastic modulus of 65GPa 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, the plasma preheats the joint handle for 4 minutes, reaches about 400°C, and the plasma sputtering is cleaned for 4 minutes, and the powder feeder feeds 300 mesh Ti13Nb13Zr powder and sprays it to a 25μm dense layer at a voltage of 60V and 600A , and then sprayed with 150 mesh Ti13Nb13Zr powder at 60V and 600A to a porous layer with a thickness of 50 μm and an average pore diameter of 150 μm. The outer layer is sprayed with β-TCP powder of 60 meshes, sprayed at 60V and 600A with a thickness of 50 μm and an average pore size of 150 μm.

[0022] After cooling, the Ti13Nb13Zr alloy joint handle sprayed with bioactive composite coating was ...

Embodiment 3

[0024] The Ti13Nb13Zr alloy joint shank with an elastic modulus of 65GPa 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, the plasma preheats the joint handle for 4 minutes, reaches about 400°C, and the plasma sputtering is cleaned for 4 minutes, and the powder feeder feeds 300 mesh Ti13Nb13Zr powder and sprays it 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 Ti13Nb13Zr alloy joint handle sprayed with bioactive composite coating w...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
elastic modulusaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a TiZrNb hip joint prosthesis and a production method thereof. The TiZrNb hip joint prosthesis consists of a TiZrNb alloy base body and a biological active composite coating which is positioned on the TiZrNb alloy base body, wherein the biological active composite coating comprises a first TiZrNb coating which is positioned on the TiZrNb alloy base body and has the same ingredients as the TiZrNb alloy base body, and a tantalum coating which is positioned on the first TiZrNb coating, a hydroxyapatite coating or a beta-tricalcium phosphate (TCP) coating which is positioned on the tantalum coating.

Description

technical field [0001] The invention relates to a TiZrNb hip joint prosthesis and a preparation method thereof. Background technique [0002] The existing bone implants usually use Ti6Al4V, CoCrMo and stainless steel. Compared with human bones, the elastic modulus of these three materials is still significantly higher, resulting in stress shielding after implantation of the prosthesis, and subsequent osteolysis. [0003] In addition, 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 that grows into the pores of the porous titanium coating is used to play a biological role. Fixed role. In order to promote the ingrowth of bone tissue, a hydroxyapatite or β-TCP coating that can induce bone tissue ingrowth is often applied on the porous titanium coating. Currently, in this field, a plasma spraying process is mainly us...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/32A61L27/30A61L27/06
Inventor 田杰谟张国强张琳曹小刚
Owner 苏州宸泰医疗器械有限公司