Efficacy and Safety of the Liquid Embolic System (Tonbridge) for Endovascular Treatment of Cerebrovascular Malformations

Inclusion Criteria: * Age 18 to 80 years, any gender; * Subject is suitable for endovascular treatment of cerebrovascular malformations; * Subject is able to understand the purpose of the study, shows sufficient compliance with the study protocol and provides a signed informed consent form. Exclusion Criteria: * Intracranial hemorrhage within 1 month prior to treatment; * The targeted embolization area needs to receive other treatments (surgical resection, SRS, other embolic materials) at the same time; * Combination of other cerebrovascular malformations, such as cavernous vascular malformation; * Severe stenosis or occlusion of cerebral feeding artery requiring surgical intervention; * Intracranial tumor requiring surgical intervention; * mRS score≥3; * Heart, lung, liver and renal failure or other severe diseases; * Known bleeding tendency, such as coagulation dysfunction (INR\>1.5); * Known allergy to DMSO and contrast media, or contraindication to anticoagulant therapy; * Pregnant or breastfeeding women, or who plan to become pregnant during the study; * Subject is participating in other drug or medical device clinical trials at the time of signing informed consent; * Other conditions judged by the investigators as unsuitable for enrollment.