The U.S. FDA has granted breakthrough device designation to Salvia Bioelectronics BV for its implantable neurostimulation system to treat chronic migraine. The designation, which provides for priority review and consultation with the agency on product development, underscores the need for effective treatments for the costly and debilitating condition. According to a summary in a patent filing, the wireless system comprises a treatment pulse generator unit and an implantable electrode unit to provide neurostimulation therapy for headaches.