indwellingadjective
uk/ˈɪn.dwel.ɪŋ/us/ˈɪnˌdwel.ɪŋ/specializedrelating to a device that is left inside the body, for example a catheter (= a long, thin tube used to take liquids out of the body):
Indwelling catheters are used during labour following epidural anaesthesia.