Wearing nasal cannulas that provide supplemental oxygen, Pope Francis arrived in a wheelchair accompanied by a nurse.

The invention provides an effective way to ensure that the prongs of nasal cannulas remain clean ... to use so it is ideal for anyone undergoing oxygen therapy, medical facilities, etc.

During the day, it has been observed that for short distances, he can do without the nasal cannulas, although he still needs high-flow oxygen during the day and non-invasive mechanical ventilation ...