A<unk>  A<unk>  (; Latin meaning 'little reed'; plural or ) 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<unk>  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 24 gauge. Different-sized<unk>  have different colours as coded. Decannulation is the permanent removal of a<unk>  (extubation), especially of a tracheostomy<unk> , once a physician determines it is no longer needed for breathing.
Cannula
Surgical tape
Surgical mask
Surgical sealant film
Surgical lubricant
Blood lancet
Karman cannula
Artefill