An adaptor (120) for use with a closed suction catheter assembly (100) includes a housing (128), the internal chamber of which may contain ribs (132). The adaptor (120) may further contain a release assembly (180) for separating the housing of the adaptor (120) from the tracheostomy tube (104). By compressing the release assembly (180), the adaptor (120), which engages the tracheostomy, is forced distally, out of contact with the tracheostomy tube (104), to thereby release the closed suction catheter assembly (100).
