Can a tiny artery block stop brain bleeds from coming back?

This trial is testing whether a minimally invasive procedure called middle meningeal artery embolization (MMAE), when combined with standard surgery, can prevent chronic subdural hematoma from recurring. Chronic subdural hematoma is a collection of blood on the brain's surface that can cause pressure and symptoms. The study will include 200 adults with this condition, and they will receive MMAE either before or after surgical drainage. The main goal is to see if this combination reduces the need for repeat surgery within 90 days, while also monitoring for complications.