This study focuses on individuals who have had a pulmonary embolism (PE) and whose doctor has determined that the clot should be removed to prevent damage to the heart and lungs. A PE is a blood clot in an artery or arteries in the lung. The purpose of the study is to examine the effectiveness of the Indigo Aspiration System for treatment of pulmonary embolism. The Indigo Aspiration System is a medical device that has been cleared by the U.S. Food and Drug Administration (FDA) for removing blood clots from the blood vessels throughout the body, except for the head. Researchers aim to collect information on how patients with PE recover after treatment with the Indigo Aspiration System.