Patent ID: 8784464

Claim:
A disposable fluid circuit for pumping heat exchange fluid to a heat exchange catheter configured to be inserted into a person's vasculature, comprising: an external heat exchanger having an input line and an output line, the output line configured to removably connect to a heat exchange catheter; a vent having an output side fluidly connected to the input line of the external heat exchanger; a fluid source; a pump head having an inlet and an outlet, the inlet fluidly connected to the fluid source and to an output line configured to removably connect to the heat exchange catheter and the outlet fluidly connected to an input side of the vent, the pump head being a portion of tubing, the portion of tubing having an inlet side in fluid communication with the fluid source and the output line and an outlet side in fluid communication with the input side of the vent, the portion of tubing being adapted to insert into a body of a peristaltic pump; and an air detector sensor fluidly connected to the external heat exchanger, the air detector sensor in communication with a master control unit for sensing air in heat exchange fluid flowing through the external heat exchanger and for generating a signal associated with sensed air in the fluid circuit and wherein the master control unit is responsive to the signal to control the peristaltic pump to stop pumping.