| 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 the helix at locations (40)(42)(44). The wire (10) forming the stent comprises an alloy selected from the group consisting of Pt-Ir or Au-Ni and has a tensile strength of about 155,000 PSI to 175,000 PSI.
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