According to an old proverb, good things come to those who wait. That tends to be true in the stock market, at least for investors who buy shares of quality companies. Waiting, being patient, and holding on to these shares through painful downturns is the key to increasing one's wealth over long periods.

With that said, let's look at two healthcare stocks that can help patient investors become much richer: (NYSE: MDT) and Merck (NYSE: MRK). 

Medtronic is one of the largest medical device companies in the world. It boasts a broad and diversified portfolio of products in several areas, including neuroscience, medical surgical, cardiovascular, and diabetes care. The company also operates in dozens of countries worldwide and generates steady revenue and earnings.

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Source Fool.com