A collection of sterile devices used with an intravascular/intracavitary-circulation hyperthermia system for the circulation of blood/fluids, with or without added chemotherapeutic agents, between the patient and the system's extracorporeal circuit during cancer therapy. It typically consists of drains/catheters, tubing, connectors, manual clamps, and hard or soft reservoirs; some types may include in-line filters, an oxygenator, and temperature sensors. This is a single-use device.