- In November 2021, Aytu BioPharma, a US-based pharmaceutical business, reported that the U.S. Patent and Trademark Office had granted it a U.S. patent for the Healight ultraviolet-A light-based pulmonary catheter.
- In November 2021, The UK-based The Flume Catheter Company Ltd. announced that the U.S. Food and Drug Administration (FDA) has granted it permission to market the FLUME catheter in the U.S.
