This stock may reward patient investors in the long run.Medical device specialist Medtronic (MDT -1.02%) has not been the best of investments over the past five years. The stock has significantly lagged the market over this period, thanks to weak business fundamentals, including slow revenue growth. The healthcare giant now faces additional obstacles, such as the threat of steeper tariffs due to President Donald Trump's aggressive trade policies.Even amid all that, Medtronic has plenty of redeeming qualitie ...