Brain stent surgery involves implanting intracranial stents to treat conditions such as intracranial stenosis and brain aneurysms, according to the Journal of Vascular and Interventional Neurology. If untreated, intracranial stenosis may cause a stroke, while a ruptured aneurysm may cause hydrocephalus, permanent nerve damage or death.
A stent is a small, tube-shaped object made from nitinol and with a mesh-like appearance, explains the Journal of Vascular and Interventional Neurology. When inserted intracranially, these stents open up blocked arteries and improve the flow of blood to the brain. During the intracranial stent placement, a skilled surgeon uses angiography to thread the stent through the blood vessels in the groin to the treatment site in the brain.