Abstract: The present invention relates generally to medical devices for use in peritoneal dialysis and to methods of using such devices. One aspect of the invention provides a device including an elongated tubular member having a lumen extending from a proximal end to a distal end and a first expandable member positioned around the elongated tubular member at a first position. A second expandable member is positioned around the elongated tubular member at a second position distal of the first position. The wall of the elongated tubular member between the first and second expandable members is free of an opening providing a fluid path between the lumen and an exterior of the device. The elongated tubular member may be reinforced along at least a portion of its length.