Brain Surgery Without Opening the Skull

Doctors have a golden rule when working with blood vessels in the brain. Never poke a hole in the wall. A new idea wants to break that rule on purpose. It is called transvascular neurosurgery. Surgeons use arteries and veins like natural hallways. These hallways lead deep into the brain. The goal is to reach spaces under the skull without cutting the scalp or drilling bone.

This is not the first time brain surgery changed. In the late 1960s, microscopes let doctors see tiny structures. That started microneurosurgery. Later, thin tubes called catheters created endovascular surgery. Doctors used them to treat aneurysms, malformations, and strokes. Through all of that, the vessel wall stayed off limits. Now the wall itself becomes the door.

Early work shows doctors can exit meningeal vessels in a controlled way. This opens paths to the subdural space, the surface of the brain, the tissue inside, and the fluid chambers. It might allow placement of special shunts. It could also help drain old blood collections under the dura. One example combines artery treatment with clot removal through the vessel.

Researchers are building a roadmap for many transvascular procedures. The plan includes rapid workflows based on catheters. Different teams would need to work together. Devices and biology must match. The aim is to turn blood vessels into routine operating corridors. Should old rules always stay in place?