Mainstay Medical, led by a team of dedicated scientists, executives, engineers, and clinical experts, brings to you ReActiv8®, the first and only FDA-approved restorative treatment for mechanical chronic low back pain. RESTORE Control RESTORE Function RESTORE Stability ReActiv8 LIFE The Company was incorporated in Dublin, Ireland and headquartered in San Diego, CA. It has subsidiaries operating in Ireland, the United States, Australia, Germany and the Netherlands.