Distal protection device

摘要

The present invention relates to (with reference to Figures 16A, 16B) a collapsible intravascular distal protection device for an emboli capturing system. It comprises a guidewire (194) having a distal tip, an expandable member (200;208) attached to the guidewire (194), a mesh (202;210) attached to the expandable member (200;208), and a sheath (204) having a cavity sized to receive and collapse the expandable member (200;208) and attached mesh (202;210). The guidewire (194) is slidingly received with the sheath (204) and the distal tip of the guidewire (194) may extend beyond the end of the sheath (204). The expandable member (200;208) when expanded has a diameter greater than the diameter the sheath (204). Starting with the expandable member (200;208) received in the sheath (204), moving the sheath (204) away from the expandable member (200;208) using the actuator wire (196) allows the expandable member (200;208) and attached mesh (202;210) to expand from a collapsed position to a deployed position.