The medical device sector can look intimidating to investors new to health care. Between complicated technologies and intimidating health problems and treatments, where does one learn to pick the best stocks for the long run? The market's run-up this year has further muddled the problem, as both thriving companies and struggling firms alike have seen shares rise in Wall Street's strong 2013. That's a boon for investors established in the industry, but it also provides a challenge for less-experienced investors just starting out in the medical device arena.

Fortunately, a few keys can help investors learn the fundamental drivers and movers behind leading stocks in the industry. Motley Fool contributor Dan Carroll below provides three fundamental tips that can help any investor from rookies to veterans separate the best medical device stocks from the rest.

Fool contributor Dan Carroll has no position in any stocks mentioned. The Motley Fool recommends Intuitive Surgical and MAKO Surgical . The Motley Fool owns shares of Intuitive Surgical and Medtronic. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.