Fig. 9

Method (A) for using the variable endport (flexible and variable transparent endport): A self-made puncture channel balloon expander is used, and a sterile glove finger is used to form a balloon system with the ventricular puncture drainage tube. (B–D) Use a self-made balloon expander to puncture the hematoma and inject water to expand and form a puncture channel. (E–G) Lay cotton pads along the puncture channel to protect brain tissue, and place the rolled endport along the cotton pads into the channel. (H) Slowly unfold the variable endport (flexible and variable transparent endport) to form an endoscopic surgical channel.