A hollow telescopic fishing rod has a rod body made from resin and reinforcing fibers. The interior dispenser and reservoir are adapted for fluid communication with one another. A blood contacting medical system includes at least one seal, and a purge system via which a flushing fluid is introduced under pressure over a blood-side face of the seal and caused to flow through a space on the blood side of the seal. The present invention permits for the control of the system based on numerous dynamic conditions to optimize operation and to minimize safety hazards. In one embodiment, the upper electrode is coupled to an RF source for exciting one or more processing gasses into plasma for substrate processing. A preferred embodiment comprises a control message that contains additional information than would be found in a neighbor advertisement MAC management message.