| 摘要 |
The present invention relates to tubular stent and drug delivery systems. The stent (1100) has a cylindrical shape defining a longitudinal axis and includes helical section (1108) having of a plurality of longitudinally oriented strut members (1113) and a plurality of circumferentially oriented hinge members (1114) connecting circumferentially adjacent strut members to form a band. The band is wrapped about the longitudinal axis in a substantially helical manner form a plurality of helical windings. The helical section further includes a proximal section (1108a), a distal section (1108b) and an intermediate section (1120), wherein the band forming the proximal and distal sections has members with a first width at coincident points along the band length, and the band forming the intermediate section has members with a second width greater than the first width at coincident points along the band length. The wider width in the intermediate section functionally separates the helical section into two subsections. |
