Medtronic plc.

One of the largest medical device companies, Medtronic develops and manufactures therapeutic medical devices for chronic diseases. Its portfolio includes pacemakers, defibrillators, heart valves, stents, insulin pumps, spinal fixation devices, neurovascular products, advanced energy, and surgical tools. The company markets its products to healthcare institutions and physicians in the United States and overseas. Foreign sales account for almost 50% of the company's total sales.