TEWKSBURY, Mass.--(BUSINESS WIRE)--Cambridge Heart, Inc. (OTCBB: CAMH), developer of non-invasive diagnostic tests for cardiac disease, today announced that on December 20, 2010 it completed a private placement to accredited investors. The transaction raised gross proceeds of $2.9 million and consisted of Units that were comprised of one share of common stock and a warrant to purchase one share of common stock.