| 摘要 |
<p>A stent (10), for example, for maintaining the patency of a duct such as a biliary duct, is provided that includes a plurality of radially extending wings (14). The wings (14) project from a core (18) which has guide wire or wire stylet lumen. Each of the wings (14) preferably include a plurality of minute, longitudinally extending grooves (16) for bile flow even in the event of tumor ingrowth. The core itself is preformed into a helical configuration.</p> |
