The Obamacare medical device tax could have given Minnesota's largest device manufacturer a heart attack. But while the tax has done the indusrty no favors, and despite slow cardiac-device sales and costly problems with its spine-fusion and brain-stimulation products, Medtronic has kept pumping. It continues to develop new products, and the Bangladeshi-born Ishrak has Medtronic making more and more sales in high-growth regions outside the United States. Look for Medtronic to provide more care services as Obamacare rolls out. Its August purchase of remote patient-monitoring firm Cardiocom is just the start of that strategy.