First-pass Recanalization With EmboTrap II in Acute Ischemic Stroke (FREE-AIS)

Inclusion Criteria

• •1. Subjects experiencing acute ischemic stroke due to large vessel occlusion (intracranial internal carotid artery and middle cerebral artery M1 or proximal M2 segment, intracranial vertebral artery and basilar artery
• •2. Age 19 or greater
• •3. mRS before qualifying stroke, 0 to 2
• •4. Baseline NIHSS score 4 or more
• •5. CT ASPECTS \> 5 or MR ASPECTS \> 4
• •6. Good collateral statues on CT angiogram (collateral grade by Calgary group, 4 or 5) or corresponding to DEFUSE 3 or DAWN trial on perfusion imaging.
• •7. Onset (last-seen-well) time to femoral puncture time \< 24 hours
• •8. Anticipated life expectancy of at least 12 months
• •9. Patients who undergo endovascular thrombectomy with EmboTrap II as the first-line device
• •10. Signed informed consent for study enrollment