A surgically implantable medical port has a housing with a fluid reservoir therein, a tubular stem extending away from the housing, a fluid conduit mounted on the stem, and a plurality of cantilevered fingers having free ends that are pressed against the fluid conduit in order to prevent conduit detachment from the port. The cantilevered fingers may be provided in a retention sleeve positioned about the fluid conduit. The retention sleeve may be unitarily formed with the housing of the port. The retention sleeve may be formed by at least two separate pieces, such as sections that pivot open and closed relative to the housing and that snap together in a closed position.