1) Bipunctate trepanation and irrigation and posterior hole enlargement
双孔引流冲洗加单孔扩大术
2) irrigation and dranage of subdural hematoma by drilling and expanding skull hole
钻空扩大骨孔冲洗引流术
4) Burr hole and drainage
单孔引流术
5) Single burr-hole irrigation and drainage
单钻孔引流术
6) Improved single-hole drainage
改良单孔引流术