Title:
METHOD OF SURFACE OXIDIZING ZIRCONIUM AND ZIRCONIUM ALLOYS AND RESULTING PRODUCT
Document Type and Number:
WIPO Patent Application WO2006033956
Kind Code:
A3
Abstract:
A coating of blue-black or black oxidized zirconium of uniform and controlled thickness on a zirconium or zirconium alloy material is accomplished through the oxidative treatment of an amorphous zirconium or zirconium alloy 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.
Inventors:
HUNTER GORDON (US)
JANI SHILESH C (US)
PAWAR VIVEK (US)
JANI SHILESH C (US)
PAWAR VIVEK (US)
Application Number:
PCT/US2005/032919
Publication Date:
May 04, 2006
Filing Date:
September 15, 2005
Export Citation:
Assignee:
SMITH & NEPHEW INC (US)
HUNTER GORDON (US)
JANI SHILESH C (US)
PAWAR VIVEK (US)
HUNTER GORDON (US)
JANI SHILESH C (US)
PAWAR VIVEK (US)
International Classes:
C23C8/02; A61L27/02; A61L27/10; C22C45/10; C23C8/10; C23C8/40; C23C8/60; C23C8/80
Domestic Patent References:
| WO2003008657A1 | 2003-01-30 |
Foreign References:
| US6447550B1 | 2002-09-10 |
Other References:
MARK TELFORD: "The case for bulk metallic glass", MATERIALS TODAY, vol. 7, no. 3, 1 March 2004 (2004-03-01), pages 36 - 43, XP002359139
TRIWIKANTORO TOMA D ET AL: "Oxidation of Zr-based metallic glasses in air", JOURNAL OF NON-CRYSTALLINE SOLIDS, NORTH-HOLLAND PUBLISHING COMPANY, AMSTERDAM, NL, vol. 250-252, 1 August 1999 (1999-08-01), pages 719 - 723, XP004183349, ISSN: 0022-3093
HORTON J.A. ET AL: "Biomedical potential of a Zirconium - Based bulk metallic glass", INTERNET ARTICLE, 14 February 2003 (2003-02-14), XP002359140, Retrieved from the Internet [retrieved on 20051215]
TRIWIKANTORO TOMA D ET AL: "Oxidation of Zr-based metallic glasses in air", JOURNAL OF NON-CRYSTALLINE SOLIDS, NORTH-HOLLAND PUBLISHING COMPANY, AMSTERDAM, NL, vol. 250-252, 1 August 1999 (1999-08-01), pages 719 - 723, XP004183349, ISSN: 0022-3093
HORTON J.A. ET AL: "Biomedical potential of a Zirconium - Based bulk metallic glass", INTERNET ARTICLE, 14 February 2003 (2003-02-14), XP002359140, Retrieved from the Internet
Download PDF:
Previous Patent: HIGH-SPEED DIFFERENTIAL LOGIC MULTIPLEXER
Next Patent: LOAD DETECTION SYSTEM FOR MOTORIZED LATERAL AND VERTICAL ARM AWNINGS
Next Patent: LOAD DETECTION SYSTEM FOR MOTORIZED LATERAL AND VERTICAL ARM AWNINGS