There are two main types of neurovascular stents currently on the market, the traditional stent and the flow diverter stent. They are both used as treatments for cerebral aneurysms. Traditional neurovascular stents are small, flexible, tube-like devices used for stabilizing detachable coils within an aneurysm. They serve to block off the aneurysm and to prevent coils from slipping back into the main blood vessel. These stents are also used to treat intracranial stenosis by opening blocked arteries. These stents are delivered in reduced tube structures for easier navigation and delivery through the narrow intracranial vessels. As brain arteries are more fragile than carotid arteries, a self-expanding stent that gently opens to the desired vessel diameter is generally used. Self-expandable stents carry a lower risk of dissection or vessel rupture when compared to the balloon-expandable stents.