One of the good things about the healthcare sector is that most medical care isn't optional. This is the foundation behind the sector, but on that foundation sits the growth opportunity that comes with medical advances.Right now one of the best healthcare stocks to look at is medical device giant Medtronic (MDT 0.39%), which is offering a historically high 3.2% dividend yield.Here's why you might want to invest $1,000 in it right now, a sum that will allow you to buy roughly 11 shares. What Medtronic has to ...