The Incentive Spirometer is a handheld medical device designed to help patients improve lung function and prevent respiratory complications. By encouraging slow, deep breaths, it aids in lung expansion and strengthens respiratory muscles. This device is commonly used post-surgery or during recovery from lung illnesses to maintain healthy air sacs and prevent conditions like pneumonia. It features a mouthpiece, a chamber with a piston or ball that rises with inhalation, and volume markings to track progress. Regular use promotes better oxygen intake and respiratory health.​