| 摘要 |
A radially expandable stent which is formed of a fine wire (10) bent into a serpentine flat ribbon and helically wound around a mandrel (14), is disclosed. The stent is formed into a cylindrical sleeve (18) for mounting on a balloon catheter (38) and transluminal insertion into a vessel (35). A free end (20) of the wire (10) is looped or wrapped around th e helix at locations (40X42)(44). The wire (10) forming the scent comprises an alloy selected from the group consisting of Pt-Ir or Au-Ni and bas a tensile strength of about 155,000 PSI to 175,000 PSI.
|
