| 摘要 |
<p>Occlusion of vessels, particularly small diameter vessels, is effected with an intravascular occlusion device comprising an anchor (10, 10', 30, 60) and an occlusive material or materials (16, 18, 44). Embodiments of the anchor include self-expanding (10, 60) or mechanically expandable (10', 30) frames comprising a plurality of wire-like members (12, 12')or a generally cylindrical, tubular-shaped member (32). Examples of the occlusive materials include filamentary strands or fiber bundles (16), and/or a non-compliant or inelastic closure member (18, 44). The strands or fiber bundles (16) are secured to the anchor by tying or adhesive. The non-compliant occlusion member (18, 44) is connected to the anchor by tying, molding, coating, adhesive, induction heating, welding or heat shrinking. The fiber bundles (16) are preferably made from material which induces a thrombogenic response. Both the fiber bundles (16) and the inelastic occlusion element (18, 44) may be coated or impregnated with thrombogenic materials or agents. Additionally, the surface of the anchor can be treated to increase the thrombogenic response of the occlusion device. <IMAGE> <IMAGE></p> |
