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Title:
医療装置用放射線不透過性ニチノール合金
Document Type and Number:
Japanese Patent JP4223282
Kind Code:
B2
Abstract:
There is described an alloy comprising titanium in an amount ranging from about 30 to about 52 atomic percent; platinum in an amount ranging from greater than 0 to about 15 atomic percent; and the balance nickel. A radiopaque nitinol medical device such as a stent for use with or implantation in a body lumen is disclosed. The stent is made from the superelastic alloy. The added ternary element (platinum) improves the radiopacity of the nitinol stent comparable to that of a stainless steel stent of the same size and strut pattern coated with a thin layer of gold. The nitinol stent has improved radiopacity yet retains its superelastic and shape memory behavior and further maintains a thin strut/wall thickness for high flexibility.

Inventors:
John F. Boylan
Daniel, El. Cox
Application Number:
JP2002552603A
Publication Date:
February 12, 2009
Filing Date:
December 06, 2001
Export Citation:
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Assignee:
ABBOTT CARDIOVASCULAR SYSTEMS INC.
International Classes:
A61L29/00; A61F2/06; A61F2/82; A61F2/84; A61F2/90; A61F2/00
Domestic Patent References:
JP11042283A
JP2004512881A
Attorney, Agent or Firm:
Kenji Yoshitake
Hiroyuki Nagai
Junpei Okada
Hirohito Katsunuma