Niobium stent

A - Human Necessities – 61 – F

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

A61F 2/06 (2006.01) A61L 31/02 (2006.01) A61L 31/08 (2006.01)

Patent

CA 2496551

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 10-4 millibars, oxygen-content less than about 80 parts per million, and the annealing temperature exceeds 400~C for at least one hour, and is preferably kept in a range from about 1100- 1200~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.

L'invention concerne un procédé de fabrication d'un stent essentiellement constitué de niobium allié à des traces de zircon, de tantale ou de titane à des fins de durcissement, ledit stent étant recuit sous vide dans un environnement essentiellement libre d'oxygène. Le vide est de préférence maintenu à une pression inférieure à 10?-4¿ millibars, la teneur en oxygène est inférieure à 80 parties par million, et la température de recuit est supérieure à 400 ·C sur au moins une heure et est maintenue à 1100-1200 ·C sur plusieurs heures. La phase de recuit peut être suivie par l'application d'une couche de surface d'oxyde, tel qu'oxyde d'iridium, avec une épaisseur de 299-300 nm, sur le stent.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Niobium stent does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Niobium stent, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Niobium stent will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1370951

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.