| 摘要 |
1. An occlusive device (10), comprising:
a coil (12) having a proximal end (18) and a distal end (16), the coil (12) comprising a helically wound elongated member (14) having a core (30) and an outer layer (32),
characterized in that the outer layer (32) being made from a metal or alloy, and has a stiffness that is different from a stiffness of the core (30). |
