Patent Number: 7,101,391

Title: Primarily niobium stent

Abstract: In a process of fabricating a stent composed primarily of niobium alloyed with a trace amount of zirconium, tantalum, or titanium for hardening, the stent is annealed under vacuum in a substantially oxygen-free environment. The vacuum is preferably maintained at pressure less than 10.sup.-4 millibars, oxygen-content less than about 80 parts per million, and the annealing temperature exceeds C. for at least one hour, and is preferably kept in a range from about 1100 C. for several hours. This may be followed by applying a surface layer of oxide, such as iridium oxide, with a thickness of 299 300 nm to the stent.

Inventors: Scheuermann; Torsten (Munich, DE), Alt; Eckhard (Ottobrunn, DE)

Assignee: Inflow Dynamics Inc.

International Classification: A61F 2/06 (20060101)

Expiration Date: 9/05/02018