Clinical Safety and Efficacy of Flow-diverter in the Treatment of Intracranial Aneurysms

Inclusion Criteria: 1)18 years ≤80 years; 2) intracranial aneurysm diagnosed by CTA, MRA or DSA (Including wide-necked aneurysms (neck width ≥4mm or Dome/neck ratio \<2), saccular, fusiform aneurysms, recurrent saccular aneurysms and dissecting aneurysms, and the diameter of the parent vessel ≥ 2.0 mm and ≤ 6.0 mm; the location includes: anterior circulation C3 segment and above of internal carotid artery, distal artery of Willis circle, posterior circulation V4 segment of vertebral artery and basilar artery and its main branches; 3) Voluntary participation in this study and signing of the Informed Consent Form (ICF). Exclusion Criteria: 1)AVM related aneurysm; 2) Acute ruptured aneurysm; 3) Severe stenosis or tortuosity of intracranial artery, or anatomical abnormality, which makes it difficult for the device to reach the lesion ; 4) Patients with hemorrhagic or ischemic stroke within 30 days; 5) Modified Rankin Score (mRS)\>2 points before operation; 6) Patients with life expectancy less than 12 months; 7) Patients with definite history of allergy to cobalt-chromium alloy and platinum-tungsten alloy materials; Allergy to contrast media; 8) antiplatelet (PLT)\<100×10\^ 9 /L or/and anticoagulation contraindicated; 9) pregnant or lactating women; 10) other study participants who were assessed by the investigator as unsuitable for participation in the study. Intraoperative exclusion criteria: 1) acute rupture and hemorrhage of aneurysm during operation; 2) failure of FD implantation; 3) thrombosis in stent; 4) stent mal-apposition.