A bulb sucker, also known as a nasal aspirator, is a small medical device used to clear nasal passages in infants and young children. It consists of a rubber bulb attached to a narrow, flexible nozzle. By squeezing the bulb, air is expelled, and upon release, the bulb re-inflates, creating suction to draw out nasal mucus and congestion. Bulb suckers are gentle and effective tools commonly used for nasal hygiene in pediatric care.