Study On Histoacryl Used For Embolization Of Middle Meningeal Artery (MMA) In Chronic Subdural Hematoma (CSDH) (HARMONY)

Inclusion Criteria: * 18 years old or older * Confirmed diagnosis of chronic subdural hematoma (CSDH) or recurrent subdural hematoma (SDH) * Completed documented informed consent * Willingness and presumed capability to participate in follow-up visits for up to 6 months (180±30 days) Exclusion Criteria: * Extensive cerebral infarction, brain tumor, or space-occupying lesion requiring treatment * Need craniotomy * Any sign of anatomical variations that could make MMA embolization unsafe (e.g., prominent MMA-opthalmic artery anastomoses) * Coagulation dysfunction with INR\>1.8 and/or platelet count \<80x109 /L * Allergic reactions to essential medicines to do angiography * Women who are pregnant, lactating, or who are of childbearing age and plan on becoming pregnant during the study * Participation in another clinical trial