Inogen One spanner wrench

The Inogen One spanner wrench is a must have tool for the extraction and replacement of the output filter for Inogen oxygen concentrators.

Use the Inogen One cannula barb tool:

1. Use the cannula barb tool to access the output filter. The spanner wrench has two prongs which mate with two indentations located on the surface of the metal cannula barb fitting on the Inogen One.
2. Carefully remove the cannula fitting by unscrewing it in the counter-clockwise direction.
3. The filter, a thin white disk, will be visible in the recess once the hose barb is removed.
4. Remove the filter and inspect the recess to make sure it is free of debris.
5. Install a replacement filter.
6. Carefully screw the cannula barb fitting back into the recess (clockwise) until it bottoms out on the filter gasket. Take care to squarely screw the nozzle fitting into the threads, and not to over tighten.