This week, the FDA granted breakthrough device designation to Aurenar‘s V-Link system, a non-invasive nerve stimulation device designed to treat cerebral vasospasm. Vasospasm is one of the most dangerous complications that can occur after a brain hemorrhage. It happens when blood vessels in the brain narrow in the days following an aneurysm, cutting off blood flow to brain tissue and risking further, typically severe, damage on top of the initial bleed.