<International Circulation>: Mechanical thrombectomy is increasingly being used for the treatment of large-vessel ischemic stroke in patients who arrive outside of the 3-4.5 hour tissue plasminogen activator time window. Could you give us a brief introduction of the use of mechanical thrombectomy in your country?
Prof. Lutsep: This is something that we have been working on for about ten years trying various ways to remove clots but it wasn’t until 2004 that the MERCI retriever was approved by the FDA. Since then， it has become the most commonly use system. The one other system that is approved is the PENUMBRA device. It applies aspiration to the clot whereas the MERCI retriever is a like a corkscrew that pulls out the clot.
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