EP 0928169 A4 20010328 - A POPULATION OF INTRALUMINAL PROSTHESES HAVING UNIFORM CHARACTERISTICS AND A PROCESS FOR MAKING THE SAME
Title (en)
A POPULATION OF INTRALUMINAL PROSTHESES HAVING UNIFORM CHARACTERISTICS AND A PROCESS FOR MAKING THE SAME
Title (de)
KLASSE VON INTRALUMINALEN PROTHESEN MIT GLEICHEN KARAKTERISTIKEN SOWIE VERFAHREN ZU IHRER HERSTELLUNG
Title (fr)
FAMILLE DE PROTHESES INTRALUMINALES POSSEDANT DES CARACTERISTIQUES UNIFORMES ET PROCEDE DE FABRICATION ANODE
Publication
Application
Priority
- US 9710924 W 19970623
- US 2096396 P 19960625
Abstract (en)
[origin: WO9749353A1] This invention is a population of radially expansible stents (14) having substantially uniform characteristics and a method for producing a population of stents with predetermined, uniform thermal and mechanical properties. The process includes deforming the stents into a hollow tube having a desired diameter, and heating the stents sufficiently to homogenize the microstructure of the alloy, thereby increasing stents' ductility to about 40 %-50 % strain. After heating, the stents are shape-set at a desired diameter at an Af temperature below body temperature. The high ductility and homogenized microstructure increases the fatigue life and improves the uniformity of the population of stents. In addition, the method of the present invention allows the Af temperature to be shifted up or down during processing, providing more precise control of the final Af temperature.
IPC 1-7
IPC 8 full level
A61F 2/06 (2006.01); A61F 2/84 (2006.01); A61F 2/89 (2013.01); A61F 2/90 (2006.01); A61F 2/91 (2013.01); A61F 2/00 (2006.01); A61F 2/07 (2013.01); A61F 2/82 (2006.01)
CPC (source: EP)
A61F 2/89 (2013.01); A61F 2/91 (2013.01); A61F 2/0077 (2013.01); A61F 2/07 (2013.01); A61F 2210/0019 (2013.01); A61F 2220/005 (2013.01); A61F 2220/0058 (2013.01); A61F 2220/0075 (2013.01); A61F 2230/0054 (2013.01); A61F 2240/001 (2013.01)
Citation (search report)
- [X] EP 0686379 A2 19951213 - CARDIOVASCULAR CONCEPTS INC [US]
- [X] EP 0421729 A2 19910410 - MEDTRONIC INC [US]
- [X] US 5405377 A 19950411 - CRAGG ANDREW H [US]
- [X] US 5507771 A 19960416 - GIANTURCO CESARE [US]
- See references of WO 9749353A1
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
WO 9749353 A1 19971231; EP 0928169 A1 19990714; EP 0928169 A4 20010328; JP 2002515785 A 20020528
DOCDB simple family (application)
US 9710924 W 19970623; EP 97930209 A 19970623; JP 50346398 A 19970623