Abiomed warned on marketing

The medical device maker received a warning letter from the FDA, which said Abiomed (ABMD) is making marketing claims about its heart pump without approval. Claims such as "Recovering Hearts. Saving Lives." for its Impella Recover LP 2.5 heart pump appear on the company's website, even though they aren't supported by randomized clinical studies. The pump has been OK'd for some cases when patients need partial circulatory support. Shares fell 5% to