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  • Filtration systems designed to trap emboli and/or other debris that is liberated during intravascular procedures using a distal filter. These systems typically include a hollow guidewire, a membrane filter, delivery and/or retrieval sheaths, and a mechanism to actuate the filter. The system filter is routed through the artery and deployed distal to the lesion to be treated; after the procedure is finished the filter is retrieved (usually through a retrieval sheath) and removed from the vasculature. Some systems are based on the use of delivery and retrieval catheters or other similar technologies. Intravascular procedure filtration systems are used temporarily during deployment of stents or catheter balloons; some dedicated filtration systems are only intended for a particular application (e.g., carotid artery, saphenous vein graft).
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