Endologix Inc. is on a path to expanding its Ovation platform through its ELEVATE IDE clinical study. The Irvine, Calif.-based company said the 75-patient trial will evaluate the safety and effectiveness of its Ovation Alto abdominal stent graft system for the repair of infrarenal abdominal aortic aneurysms (AAA). The company said the first patients have already been treated in the trial.