Oxygen delivery systems are medical devices designed to provide supplemental oxygen to patients who have difficulty breathing or require additional oxygen for various health conditions. These systems can include nasal cannulas, oxygen masks, and ventilators, each serving different needs based on the severity of the patient's condition. The choice of an oxygen delivery system depends on factors such as the patient's age, the level of oxygen required, and the underlying medical issue. Proper use of these systems can improve oxygen saturation levels in the blood, enhancing overall health and quality of life for individuals with respiratory challenges.