DEVICES AND METHOD FOR VASCULAR RECANALIZATION

摘要

In some embodiments, a medical device for recanalizing a vessel having a blockage and restoring blood flow through an obstructed blood vessel includes an expandable member coupled to a core wire and a hypotube that are movable relative to each other to manipulate the expandable member between various configurations. The expandable member having a capture structure in an expanded configuration. The expandable member can include multiple interstices formed by woven mesh filaments or braided strands through which the material blocking the vessel can pass. The capture structure can include a shape on its external surface that facilitates dislodgement and capture of the material within capture spaces created by the expandable member. Some embodiments include a capture sack or cap for capturing material and preventing material from migrating down stream of the blockage. Superoxygenated blood can be infused distal to the blockage to minimize loss of function during an ischemic event.

主权项

1. A method of treating an embolism comprising:
delivering an embolectomy device to an embolism that at least partially restricts blood flow through a blood vessel, wherein the embolectomy device comprises an expandable member having a first expandable portion, a second expandable portion, and a third expandable portion, wherein at least a portion of the expandable member is configured to expand outwardly to engage at least a portion of the embolism or blood vessel wall; deploying the embolectomy device within the embolism so as to restore blood flow through the embolism and form a flow channel through the embolism, wherein the embolectomy device in a deployed configuration comprises first and third portions expanded to a greater extent than the second portion, the second expandable portion being disposed between the first and third expandable portions, and wherein the first and third expandable portions project radially outward beyond the second portion; moving the embolectomy device and at least a portion of the embolism along the blood vessel; and withdrawing the embolectomy device and at least a portion of the embolism from the blood vessel.