| 摘要 |
A stent includes a stent body (1) with a diameter of between approximately 4 and 12mm and a length of between approximately 10 and 250 mm. S-shaped struts (5) are disposedhelically about the circumference along helical turns. The struts have straightportions (6) and curved portions (7) connecting respectively adjacent onesof the straight portions. Bridges (8,9) connect the struts in adjacent ones ofthe turns. The bridges include connecting bridges and a given number of sacrificialbridges before being expanded, and the connecting bridges and less than the givennumber of the sacrificial bridges after being at least partially expanded. Amethod for manufacturing a helical stent includes the steps of providing a stentbody with struts disposed about the circumference thereof in turns and with bridgesconnecting the struts in adjacent turns. The stent body is expanded and, thereafter,some of the bridges, in particular, sacrificial bridges, are removed. |
