septal
adjective medical specialized uk/ˈsep.təl/ us/ˈsep.təl/
（身体器官如鼻子或心脏内的）隔的，隔板的，隔膜的
relating to the septum (= a thin part dividing tissues or spaces in an organ such as the nose or heart)
Septal defect is sometimes known as "hole in the heart". 心隔膜缺陷有时被称为“心脏内的一个洞”。