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A cannula (/ˈkænjʊlə/ ; Latin meaning 'little reed'; pl.: cannulae or cannulas)[1] is a tube that can be inserted into the body, often for the delivery or removal of fluid or for the gathering of samples. In simple terms, a cannula can surround the inner or outer surfaces of a trocar needle thus extending the effective needle length by at least half the length of the original needle. Its size mainly ranges from 14 to 26[2] gauge. Different-sized cannula have different colours as coded.
Decannulation is the permanent removal of a cannula (extubation),[3] especially of a tracheostomy[4] cannula, once a physician determines it is no longer needed for breathing.
- ^ cannula Oxford Dictionaries. Retrieved 2014-09-18.
- ^ "IV Cannula - Mais India Manufacturer, Exporter & Supplier". 2020-05-04. Retrieved 2023-07-07.
- ^ Children with Tracheotomies Resource Guide, by Marilyn K. Kertoy, page 15 (Google book search)
- ^ "MerckEngage® - Healthy Living Tips and Health Information". mercksource.com. Archived from the original on 2008-02-23. Retrieved 2007-09-27.