Patent ID: 6641556
Filing Date: 2003-11-04
Classification: A61M,H05B

Abstract:
A system for delivering an intravenous liquid to a patient at a controlled temperature to address hypothermia comprising:a flexible container for storing liquid where the liquid can be below a predetermined optimum delivery temperature: a conduct tube connecting the flexible container for discharging the liquid from the flexible container; a flow controller for controlling the flow of liquid from the flexible container through the conduit tube; a first tubing connected to the flow controller; a heat controlling unit; a junction unit connected to the first tubing, the junction unit including an electrical connection member connecting said junction unit to the heat controlling unit; a second tubing including a flexible web internally disposed inside the second tubing to extend substantially along the second tubing between the junction unit and the patient, the flexible web includes a heater member embedded within the flexible web to heat the flexible web as it extends along the second tubing which in turn heats the liquid flowing across the flexible web in the second tubing, the second tubing is connected to the junction unit to receive the liquid; and a heat sensor unit disposed inside the second tubing to measure the temperature of the liquid flowing through the second tubing, the heat controlling unit receives temperature signals from the heat sensor unit and adjusts a power current to the junction unit in response to the temperature signals, wherein the flexible web is in electrical communication with the junction unit to enable the heater member to convert the power current to heat which is transferred through the flexible web member to the liquid in the second tubing, the flexible web is an elongated flat solid insulating plastic member with embedded wires connecting the heat sensor unit with the junction unit.