Traditional minimally-invasive endovascular procedures like coiling are inadequate for the effective treatment of may wide-necked, fusiform aneurysms and arteriovenous fistulae (AVF) in the brain. An endovascular approach of placing a covered microstent across the intracranial aneurysm neck and AVE rent is promising. Unlike bare stents (stent without cover), covered microstents will have the capability of completely preventing blood flow into the aneurysm cavity of AVF rent. The strategy will restore normal vessel morphology and blood flow.

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