Title:
COBALT-BASED ALLOY FOR IN-VIVO USE, AND STENT
Document Type and Number:
WIPO Patent Application WO/2011/118615
Kind Code:
A1
Abstract:
The first purpose of this invention is to provide a high-strength, nickel-free cobalt-based alloy for in-vivo use. Said alloy has a high elastic modulus and is plastically workable. The second purpose of this invention is to provide an X-ray-visible cobalt-based alloy for in-vivo use. The third purpose of this invention is to provide a stent using said alloy. The provided cobalt-based alloy for in-vivo use comprises a cobalt-chromium-tungsten alloy with the addition of a biocompatible alloy element that has the effect of increasing the stacking-fault energy of the alloy.
Inventors:
CHIBA AKIHIKO (JP)
Application Number:
PCT/JP2011/056939
Publication Date:
September 29, 2011
Filing Date:
March 23, 2011
Export Citation:
Assignee:
SEIKO INSTR INC (JP)
JAPAN MEDICAL MATERIALS CORP (JP)
UNIV TOHOKU (JP)
CHIBA AKIHIKO (JP)
JAPAN MEDICAL MATERIALS CORP (JP)
UNIV TOHOKU (JP)
CHIBA AKIHIKO (JP)
International Classes:
C22C19/07; A61L27/00; A61L31/00
Domestic Patent References:
| WO2008139829A1 | 2008-11-20 | |||
| WO2007043687A1 | 2007-04-19 | |||
| WO2006054368A1 | 2006-05-26 |
Foreign References:
| JPS62146233A | 1987-06-30 | |||
| JPS59232248A | 1984-12-27 | |||
| JPS5687644A | 1981-07-16 | |||
| JP2007162121A | 2007-06-28 |
Other References:
See also references of EP 2551363A4
OLSON; COHEN, METALL. TRANS., vol. 7A, 1976, pages 1897 - 1904
ERICSSON, ACTA METALL, vol. 14, 1966, pages 853 - 865
OLSON; COHEN, METALL. TRANS., vol. 7A, 1976, pages 1897 - 1904
ERICSSON, ACTA METALL, vol. 14, 1966, pages 853 - 865
Attorney, Agent or Firm:
KUHARA, Kentaro et al. (JP)
Kentaro Kuhara (JP)
Kentaro Kuhara (JP)
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Claims: