The owner of the Ellwood City Medical Center has filed for federal bankruptcy protection. Americore Health LLC, which now lists its headquarters as St Louis, Mo., filed paperwork Tuesday in U.S. Bankruptcy Court in the Eastern District of Kentucky seeking Chapter 11 protection. Ellwood City Medical Center, which has been temporarily closed by Americore since Dec. 10 after the state Department of Health shut down its emergency room and inpatient services Nov. 27 for serious violations, is not the only facility affected. They will also close hospitals in Arkansas and St. Louis.