Fourth revenue results for the medical device maker St. Jude Medical, which has two Valley offices, is expected to beat Wall Street estimates, the company said Monday. Fourth quarter revenue is expected to tally $864 million, beat estimates of $843 million. The company also forecast earnings of $0.42 per share, $0.03 more than analyst expectations. The company’s U.S. operations are based in Woodland Hills, with its Cardiac Rhythm Management division headquartered in Sylmar.