Post Market Surveillance Study of the Wingspan Stent System

This research study is a Food and Drug Administration (FDA) mandated post market surveillance study of the Wingspan® Stent System, also known as the WEAVE™ Trial. The purpose of this trial is to fulfill a FDA requirement to evaluate the rate of stroke and/or death within 72 hours of the procedure, in patients who have a Wingspan Stent implanted in accordance with the Indications for Use.