An incentive spirometer (IS) is a hand-held medical device which is typically used after surgery or for people with chronic lung diseases like emphysema, chronic obstructive pulmonary disease (COPD), and pulmonary fibrosis to exercise the lungs and allow access to air in each corner of the lung. The Bartlett-Edwards IS device was introduced in 1973 to incentivize deep breathing by offering visual light feedback when patients reached the target inspiratory…