Thermal contrast therapy device

A contrast therapy apparatus to provide controlled therapeutic treatments, comprising:

• a thermal pad, comprising:
• a fluidic channel having an input port and an output port;
• and
• a thermally-transmissive outer covering;
• and
• a control unit, comprising:
• a fluid channel output port coupled to the input port of the thermal pad fluidic channel;
• a fluid channel input port coupled to the output port of the thermal pad fluidic channel;
• one or both of a hot-fluid circulation loop coupled to the output port and the input port and a cold-fluid circulation loop coupled to the output port and the input port;
• a pump to provide fluid flow in at least one of the hot-fluid circulation loop and the cold-fluid circulation loop;
• a processor coupled to a memory, the processor configured to execute instructions stored in the memory, to provide to the thermal pad a fluid flow having a predetermined temperature profile;
• one or more diverting valves operative to cause hot fluid to flow out of a hot fluid reservoir and into the thermal pad, and flow out of the thermal pad into a cold fluid reservoir during a cold to hot transition delay period, and the hot fluid to flow out of the hot fluid reservoir and into the thermal pad, and flow out of the thermal pad into the hot fluid reservoir during a hot cycle that follows the cold to hot transition delay period;
• and
• a solenoid valve at each end of therapy pad, the diverting valves operative to divert fluid from flowing into the input port of the thermal pad to flowing to a Venturi that provides suction pressure to remove fluid from the wrap.