Medtronic - Opinions of Wearables Medtronic are one of the largest medical device manufacturers in the world. Their operational headquarters is in Minnesota, with their corporate headquarters in Dublin, Ireland following a high profile merger with Covidien plc. This merger moved the company to be the second largest medical device manufacturer at the time, just behind Johnson & Johnson. They manufacture a very broad range of components and devices for medical use. Medtronic - Opinions of Wearables