Flow Diversion is a technique used to treat large or giant wide-necked brain aneurysms in which the device is placed in the parent blood vessel rather than in the aneurysm sac. The Pipeline® Device is the first and only flow diversion device approved by the US Food and Drug Administration (FDA). The Pipeline Device restores original, natural blood circulation while providing permanent long-term occlusion. During the procedure, the Pipeline Device (a braided cylindrical mesh) is implanted across the aneurysm neck. This slows the flow of blood into the aneurysm, which allows for the diseased vessel to heal.