Title:
管腔内ステントを製造するための異種金属をレーザー接合するためのプロセス
Document Type and Number:
Japanese Patent JP4708651
Kind Code:
B2
Abstract:
A process for laser joining a first metal, having a first reflectance curve as a function of wavelength, such as nitinol or stainless steel, and a second metal, having a second reflectance curve, such as gold. The process comprises placing the first and second metals in contact with one another then exposing at least one of the first metal and second metal to a laser beam having a wavelength selected from an optimal range of wavelengths over which the reflectance curves of the two metals essentially overlap. The first metal may comprise a first metal element having a sufficiently low heat sink capacity and a sufficiently lesser reflectance than the second metal at wavelengths outside the optimal range of wavelengths such that laser joining at such wavelengths exposes the first metal to a risk of excessive melting, vaporization, or cutting through the first metal element. The first metal element may be a stent adapted for endoluminal deployment, wherein the second metal is a radiopaque marker relative to the first metal. A stent produced by this process may comprise one or more first metal elements with a radiopaque marker metal attached to one or more portions of at least one element, the radiopaque marker comprising the second metal attached to the first metal by a weld, a clad layer of the second metal over the first metal, or an alloy layer of the two metals over the first metal.
Inventors:
Flanagan, Aiden
Application Number:
JP2001546320A
Publication Date:
June 22, 2011
Filing Date:
December 11, 2000
Export Citation:
Assignee:
Boston Scientific Limited
International Classes:
B23K26/00; B23K26/34; B23K26/40; A61B19/00; A61F2/90; B23K103/18
Domestic Patent References:
| JP55117584A | ||||
| JP10080492A | ||||
| JP11074435A |
Foreign References:
| WO1992000828A1 |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita