Intuitive Surgical Inc. (ISRG, Financial) is an absolute monster of a health care stock. The company has returned over 600% over the past 10 years, easily dwarfing the 160% returns of the S&P 500 Index. Over the same period, the Health Care Select Sector ETF (XLV, Financial) returned 148%. Most of the growth in Intuitive Surgical was seen as hospitals, large medical institutions and integrated delivery networks such as Kaiser Permanente jumped onto the trend of using its robotic surgery systems at their hea ...