名詞 cannula:

1. a small flexible tube inserted into a body cavity for draining off fluid or introducing medication

cannula 也作 can.u.la

n.（名詞）
【復數(shù)】 can.nu.las 或 can.nu.lae [-lô.]
A flexible tube, usually containing a trocar at one end, that is inserted into a bodily cavity, duct, or vessel to drain fluid or administer a substance such as a medication.
套管，插管：一根通常一端有套管的柔韌管子，被插入體腔、導管或血管以排出液體或服用一種物質(zhì)，如藥物等

來源：
Latin [diminutive of] canna [reed] * see cane
拉丁語 [] canna的小后綴 [蘆葦] *參見 cane