If an astronaut experiences a collapsed lung (pneumothorax), medical suction is required to inflate the lung through a thoracic chest tube. This requires a medical chest drain and suction. Medical suction clears the airway, empties the stomach, decompresses the chest, and keeps operative fields clear. There is currently no medical suction capability that would work in the microgravity environment. Current medical thoracic suction is dependant upon gravity and fluid to operate. End users of the mature technology include hospitals, aeromedical transport, and military medicine.