Diabetes management systems is one of the connected health industry's most active categories. Terry Gregg, former president of Medtronic's diabetes management systems, is now CEO of Dexcom, which has developed its own line of connected diabetes management devices for patients. The units continuously monitor glucose levels using a small body sensor patch, communicating data to a receiver the size and shape of an iPhone. Gregg explained the systems at the recent University of Pennsylvania Connected Health Symposium.