Wednesday morning, Medtronic Inc., a manufacturer of medical devices, revealed it received approval from the U.S. Food and Drug Administration or FDA for its InterStim II System for the treatment of intractable cases of overactive bladder and urinary retention. The Minnesota-based company said that the system uses sacral nerve stimulation to improve bladder function. Trading Markets (http://www.tradingmarkets.com/tm.site/news/TOP%20STORY/297180/)