A medical device includes a tubular member having a distal end residing interiorly of the body of a patient, a proximal end extending exteriorly of the body, and a lumen extending therebetween. A first passageway extends along the tubular member between a distal end in fluid communication with the lumen, and a proximal end extending exteriorly of the body. A second passageway extends along the tubular member between a distal end located distal to the distal end of the first passageway, and a proximal end extending exteriorly of the body. An occlusion member is associated with the distal end of the second passageway. The occlusion member is movable between an occluded configuration and a non-occluded configuration for selectively occluding the lumen of the tubular member. When the lumen is occluded, a flushing fluid may be passed therethrough via the distal end of the first passageway.
