| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a flexible stent. SOLUTION: A preferred embodiment of the stent provides a folded strut section that provides both structural rigidity and reduction in foreshortening of the stent mechanism. A flexible section provides flexibility for delivery of the stent mechanism. In a second embodiment, flexible section columns are angled with respect to each other, and to the longitudinal axis of the stent. These relatively flexible sections are oppositely phased in order to negate any torsion along their length. In yet another embodiment, the flexible connector can take on an undulating shape (like an 'N'), but such that the longitudinal axis of the connector is not parallel with the longitudinal axis of the stent. In addition, the new method for preparing each stent consists of performing a standard photochemical machining process of cutting, cleaning and coating the tube with a photoresist.</p> |
