Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method of surface oxidizing zirconium and zirconium alloys and resulting product

A technology of zirconium alloy and zirconia, applied in metal material coating process, shoulder joint, prosthesis, etc., can solve problems such as reducing integrity

Inactive Publication Date: 2004-12-08
SMITH & NEPHEW INC
View PDF8 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resulting oxide coating is not always uniform in thickness, and this non-uniformity reduces the integrity of the bond between the zirconium alloy and the oxide layer, as well as the integrity of the bond within the oxide layer

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method of surface oxidizing zirconium and zirconium alloys and resulting product
  • Method of surface oxidizing zirconium and zirconium alloys and resulting product
  • Method of surface oxidizing zirconium and zirconium alloys and resulting product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] One aspect of the present invention is to provide a method for forming an oxide coating of uniform thickness on zirconium or zirconium alloys each having a single-phase crystal structure and uniform composition, and modified surface roughness Spend. Another aspect of the present invention is to provide a low friction, wear resistant uniform thickness on prosthetic surfaces such as articulating surfaces and irregular surface structures adapted to accommodate tissue ingrowth on a portion of the prosthetic body oxide coating.

[0040] Before oxidizing zirconia or zirconium alloys, the subject matter of the method of forming oxide coatings of uniform thickness can be applied to various Prosthetic components and devices. These prosthetic components and devices include, but are not limited to, cardiovascular implants, including heart valves, whole artificial heart implants, ventricular assist devices, vascular grafts, and endovascular supports; electrical signal-carrying de...

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
thicknessaaaaaaaaaa
surface roughnessaaaaaaaaaa
Login to View More

Abstract

A coating of blue-black oxidized zirconium of uniform and controlled thickness on a zirconium or zirconium alloy material is accomplished through the use of a single phase crystalline material substrate having an altered surface roughness. An oxidized zirconium coating of uniform and controlled thickness is especially useful on orthopedic implants of zirconium or zirconium-based alloys to provide low friction, highly wear resistant surfaces on artificial joints, such as, but not limited to, hip joints, knee joints, shoulders, elbows, and spinal implants. The uniformly thick oxidized zirconium surface of controlled depth on prostheses provide a barrier against implant corrosion caused by ionization of the metal prostheses. The invention is also useful in non-articulating implant devices such as bone plates, bone screws, etc.

Description

Background of the invention [0001] This application claims priority to US Application Serial No. 09 / 909,612, filed July 20,2001. [0002] The present invention relates to metal implant devices having a load bearing surface coated with a thin, dense, low friction, highly wear resistant, uniform thickness zirconia coating. [0003] The present invention also relates to a uniform thickness of zirconia coatings on non-load bearing surfaces of orthopedic implant devices, wherein the zirconia provides a barrier between the metal prosthesis and human tissue, thereby preventing the release of metal ions and implanting the device of corrosion. [0004] The present invention also relates to a method of producing an oxide coating of uniform thickness on zirconium or zirconium alloys by controlling the surface roughness of zirconium or zirconium alloys having a single-phase crystal structure and uniform composition prior to formation of the oxide coating . [0005] The excellent corros...

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 Applications(China)
IPC IPC(8): A61L27/00A61F2/00A61F2/28A61F2/30A61F2/32A61F2/34A61F2/36A61F2/38A61F2/40A61F2/42A61F2/44A61L27/04A61L27/30C23C8/02C23C8/10C23C8/12
CPCA61F2002/30878A61F2250/0026A61F2/38A61F2/3662A61F2/36A61F2/389A61F2/4241A61L27/306A61F2002/365A61F2002/30909A61L27/047A61F2/34A61F2/30767A61F2002/30892C23C8/10A61F2310/00089A61F2/367A61F2002/30322A61F2/32A61F2/40A61F2002/3611A61F2002/30838A61F2/3094C23C8/02A61F2/44A61F2002/3625A61F2310/00634A61F2002/30332A61F2220/0033A61F2/3859A61F2/2803
Inventor G·亨特C·M·阿斯吉安G·L·希内斯
Owner SMITH & NEPHEW INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com