Methods: Adopted CT localization technique, we choose the center of hemorrhage, implanting the hard passage into the cavitas of the CSDH, repetitious irrigating and remain drainage.

• 方法:根据头颅CT定位,选择血肿最大层面及血肿中心,经皮向血肿腔置入硬通道,反复冲洗,持续外引流。