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Method for preparing prosthesis with tantalum coating

An artificial prosthesis and tantalum coating technology are applied in the field of biomedical composite materials to achieve good biocompatibility, high bonding strength, and increased bone ingrowth

Inactive Publication Date: 2010-10-20
FOURTH MILITARY MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, some research institutions have adopted a laser process method LENS TM The processing and preparation of tantalum coatings and the research on biological characteristics are carried out, but the focus is on the wettability and surface energy of the material (Wettability and Surface energy), and the prepared coating density is also relatively uniform. In-depth research and elaboration on the level of coating bonding strength

Method used

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  • Method for preparing prosthesis with tantalum coating
  • Method for preparing prosthesis with tantalum coating
  • Method for preparing prosthesis with tantalum coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as Figure 1-3 As shown, the tantalum-coated artificial knee prosthesis is composed of femoral condyle component 1, tibial pad component 2, tibial tray component 3 and patella component (not shown). The above components are used together, and femoral condyle component 1 is installed on At the distal end of the femur, tibial pad component 2 and tibial tray 3 are fitted and placed on the tibial plateau, and the patella component fits with the osteotomized human patella; femoral condyle component 1, tibial tray component 3, tibial pad component 2 and the patella After the component is reset, the surrounding ligament and tendon tissue are reset and sutured for fixation. Femoral condyle component 1 and tibial tray component 3 are made of titanium alloy (Ti-6Al-4V) or cobalt-chromium-molybdenum alloy (Co30Cr6Mo0.35C), and the patella component is made of high molecular polyethylene material. Hard Al 2 o 3 Or SiC sand is used as a medium to perform sandblasting pretrea...

Embodiment 2

[0039] Such as Figure 6 , 7 As shown, the hip joint prosthesis includes a stem body 7, a stem neck 8, a femoral ball head 11 and an acetabular part; the upper end of the stem body 7 is a stem neck 8 which plays a connecting role, and the stem neck 8 is sleeved with a femoral ball The head 11, the femoral ball head 11 is sleeved with the acetabulum, and the handle body 7 is a cylinder or a cone. The inner side extends in a circular arc and extends to the handle neck 8, and the outer side of the handle body 7 is straight or arc-shaped and meets the basal outer side of the handle neck 8 to form an angular body of 80-110°. The part where the outer surface of the handle body 7 is wrapped with the tantalum surface 6 is the upper part of the handle body 7 or the outer surface of any part of the handle body 7 . The tantalum surface 6 wrapped by the handle body 7 is a microporous structure, and the thickness of the tantalum surface 6 is 200 , The microporosity is 40%.

[0040] Th...

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Abstract

The invention discloses a method for treating surface pores of artificially implanted prosthesis and particularly to a method for preparing a prosthesis with a tantalum coating. The method comprises: preparing a tantalum microporous coating, which may has different surface porosities, on the surface of the part, to be implanted in a bone, of the prosthesis by selecting spraying powers of 25, 30, 35 and 40kW respectively under the conditions of a spraying distance of 100 to 150 millimeters and a powder feeding rate of 70 to 80 grams per minute, wherein the thickness of the tantalum microporous coating is 30 to 300, and the porosity is between 20 and 50 percents; and the substrate of the prosthesis is made of stainless steel 00Cr18Ni14Mo3 or 00Cr18Ni15Mo3N, titanium ( Ti), a titanium alloy Ti-6Al-4A or a C-Cr-Mo alloy (Co30Cr6Mo0.35C) material. The method aims to make the coating of the prosthesis high reliably in bonding strength and high selectable in surface porosity and to reduce the adverse factors which influence the stability of the prosthesis after the prosthesis is implanted. Thus, the anchoring area of the bone and the prosthesis can be increased, preconditions are created for the growth of the newly born bone tissues toward the inside of the pores, the loosening and dislocation of the prosthesis are avoided and the immobilization effect and the service life of the prosthesis are ensured.

Description

technical field [0001] The invention relates to a method for preparing an artificially implanted prosthesis coating, in particular to a method for preparing a tantalum-coated artificial prosthesis, which belongs to the application field of biomedical composite materials. Background technique [0002] Bio-ceramic coating materials and microporous metal coating bio-materials are the main direction of prosthesis surface treatment, which are respectively coated with hydroxyapatite (HA) [patent number: 200820000295.2] and titanium (Ti) [patent number: 200820000297.1] to represent. They are HA (Ca 10 (PO 4 ) 6 (OH) 2 ) and Ti metal are coated on the surface of stainless steel or Ti metal matrix to form a bio-coating composite material with certain bone conduction and induction functions, which overcomes the comprehensive performance of previous human implant materials in terms of mechanical strength, biocompatibility, and corrosion resistance. However, due to the shortcomings...

Claims

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Application Information

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IPC IPC(8): A61F2/30A61F2/44A61C8/00A61L27/30A61L27/56A61K6/04
CPCA61F2/38A61F2/30767A61F2/34A61F2/36A61F2002/30001
Inventor 朱庆生段永宏朱锦宇朱澍
Owner FOURTH MILITARY MEDICAL UNIVERSITY
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