| 摘要 |
A vascular filter (10) is provided that includes a tubular member (12), and a guidewire lumen. An expandable frame (14) is attached to the tubular member (12) capable of assuming collapsed and enlarged conditions, and filter material (16) is attached to the frame (14), the filter material (16) having an open proximal end when the frame assumes its enlarged condition. A retrieval device (110) is provided that includes a sheath (112) and a retrieval member (114) deployable from the sheath (112). The retrieval member (114) includes a connector on its distal end for securing the tubular member, such as an expandable member (134) within a recess for receiving the tubular member (12). To retrieve the filter the sheath (112) is advanced over the filter (10) thereby collapsing the expandable frame (14), the retrieval device (110) is advanced over the guidewire, the vascular filter (10) is secured to the retrieval member (114), and the vascular filter (10) and retrieval device (110) are withdrawn from the blood vessel. |
