A first component (116) of a medical respiratory apparatus is disclosed. The first component (116) comprises a female end portion adapted to closely receive a corresponding male end portion of a second component (120) of the medical respiratory apparatus so that the first and second components (116,120) are in communication with one another. The first component (116) is further provided with an access port enabling insertion of an ancillary device (130), and a guide formation (118) that guides the ancillary device (130) into the second component (120) during use.
