Intraluminal stent made of metal with well-defined granularity

摘要

An intraluminal stent (100) comprises a plurality of hoop components (102) being formed as a continuous series of substantially circumferentially oriented radial strut members (106) and alternating radial arc members (108). One or more flexible connectors (104) connect adjacent hoop components to form a substantially tubular structure having a luminal surface and an abluminal surface. The single loop components are fabricated from a metallic material processed to have a microstructure, in at least the radial arc members, with a granularity of not more than about 32 µm and comprise from about 2 to about 10 substantially equiaxed grains as measured across the wall thickness.