Compare the Safety and Effectiveness of Two Different Kinds of Stent System in Intracranial Aneurysms

Inclusion Criteria:

1. Age 18 years to 80 years.
2. Wide-necked (Wide-necked is defined as width ≥ 4 mm or a dome-to-neck ratio < 2),saccular, intracranial aneurysms arising from a parent vessel with a diameter of ≥ 2.5mm and ≤ 5mm.
3. Modified Rankin Scale (mRS) ≤ 2.
4. Subject understands the nature of the procedure, provides voluntary written informedconsent prior to the treatment, and is willing to comply with specified follow-upevaluation.
5. The investigators judged the use of stent-assisted coil embolization to be appropriatefor the treatment of intracranial aneurysm.

Exclusion Criteria:

1. Target aneurysm is an aneurysm requiring staged procedure.
2. Target aneurysm that has been previously treated with vascular embolization orsurgery.
3. Target aneurysms are fusiform aneurysms, dissecting aneurysms, pseudoaneurysms, bloodblister-like aneurysms, infected aneurysms, aneurysms associated with arteriovenousmalformations.
4. Hospitalized surgical treatment within 30 days before operation, or plannedhospitalized surgical treatment within 6 months after surgery.
5. Acutely ruptured aneurysm within 14 days of enrollment.
6. Hunt and Hess (H&H) scale ≥3.
7. Subject who had Moyamoya disease, arteriovenous malformations, arteriovenous fistulae,intracranial tumors, or intracranial mass lated to target aneurysms.
8. Severe stenosis or tortuosity of intracranial arteries or anatomical anomalies thatmake it difficult to reach the site of the lesion with device.
9. Platelet count <50103/mm3 (50109/L) or any known coagulation deficiency, orInternational normalized ratio (INR)>3.0.
10. Known hypersensitivity/allergies or contraindication to contrast media, stentcomponents, antiplatelets, anticoagulants.
11. Life expectancy < 1 year, and unable to complete the required follow-ups;
12. Female who was pregnant or breastfeeding, women/men planning to havve children in thenext year.
13. Currently enrolled in another investigational device or drug study.