Most investors will never come in contact with the products that are made by medical device companies. That fact can make it hard for them to research these types of businesses. However, when a medical device company creates a game-changing product it can often go on to create huge shareholder value in time. On this week's episode of Industry Focus: Healthcare, host Shannon Jones sits down with Fool.com's Brian Feroldi to talk about three hidden medical device makers that could be on the verge of generating meaningful returns for their investors: ViewRay, Nervo, and LeMaitre Vascular.

Stocks: VRAY, NVRO, LMAT

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