What Is an Inner Cannula

Tracheostomy tubes often have an ‘inner cannula’ or ‘inner tube’. This is a tube within the outer tube which can be removed and cleaned easily, without having to change the whole (outer) tracheostomy tube. Inner cannulae do narrow the tracheotomy tube which can make it harder to breathe through.

What is the purpose of the inner cannula?

Inner Cannula: The inner cannula fits inside the trach tube and acts as a liner. This liner can be removed and cleaned to help prevent the build-up of mucus inside the trach tube. The inner cannula locks into place to prevent accidental removal.

How often do you change inner cannula of trach?

The tracheostomy inner cannula tube should be cleaned two to three times per day or more as needed.