cannula
noun [ C ] medical specialized uk/ˈkæn.jə.lə/ us/ˈkæn.jə.lə/
（输药等的）插管
a thin tube that can be put into the body, for example to put in medicine or remove blood
An insulin pump requires the insertion of a cannula under the skin. 胰岛素泵需要在皮下插入插管。