Safety Study of Intracranial Support Catheter and Guide Catheter for Stent-Assisted Embolization in the Treatment of Intracranial Aneurysms

Inclusion Criteria: * Age≥18 and≤70 years, any gender; * Preoperative modified Rankin Scale (mRS) score 0-2; * Subject has an unruptured intracranial aneurysm in the anterior circulation diagnosed by DSA/CTA/MRA (accept the results from other hospital)； * No intracranial hemorrhage and recent cerebral infarction (DWI indicates hyperintense lesions) are founded by preoperative MRI+DWI; * Subject is assessed as suitable for stent-assisted coil embolization (SACE) treatment (except flow diverter stent); * Subject or guardian is able to understand the purpose of study, shows sufficient compliance with the study protocol and provides a signed informed consent form. Exclusion Criteria: * Inadequate antiplatelet therapy before surgery (more than 3 days); * Subject with atrial fibrillation, patent foramen ovale, atrial septal defect, ventricular septal defect, and other diseases causing cardiogenic embolism; * Inability to perform cranial MRI+DWI preoperatively and within 48 hours postoperatively; * Hypertension that does not respond well to medical treatment (systolic blood pressure\>185 mmHg and/or diastolic blood pressure\>110 mmHg); * Preoperative active bleeding or bleeding tendency (INR\>3); * Random blood glucose\<2.7mmol/L or \>22.2mmol/L; * Heart, lung, liver and kidney failure or other serious diseases (intracranial tumor, intracranial arteriovenous malformation, severe infection, DIC, previous myocardial infarction, history of severe psychosis, etc.); * Subject who will not cooperate or tolerate interventional operation; * Anticipated life expectancy\<1 year; * Allergy, resistance or contraindication to one or more of the following: contrast agents, anesthetics, antiplatelet drugs, anticoagulants; * Participated or participating in another drug or device clinical trial within 1 month prior to enrollment; * Pregnant or breast-feeding woman; * Other circumstances judged by researchers that are not suitable for enrollment; * Catheter could not pass through due to obvious intracranial vessel stenosis or tortuosity determined from imaging; * Multiple aneurysms and more than one aneurysm requiring treatment; * The aneurysm body has arterial branches.