| 摘要 |
A retrieval catheter 1 for retrieval of an embolic protection filter from a vasculature. The catheter 1 comprises a proximal hypotube 3 , a radially offset distal shaft 4 and a centering shank 9 . A guidewire lumen 13 is provided through the shank 9 in communication with a larger guidewire lumen 7 through the shaft 4 for a continuous guidewire passageway to accommodate passage of a guidewire 21 through the shank 9 , the shaft 4 and out through a proximal guidewire opening 6 to facilitate rapid exchange of the catheter 1 over a guidewire 21 . The shank 9 is movable between an introduction configuration in which the shank 9 protrudes distally from the shaft 4 to centre the catheter 1 during advancement through a vasculature, and a retrieval configuration in which the shank 9 is located within the guidewire lumen 7 to facilitate retrieval of an embolic protection filter into the shaft 4.
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