Patent ID: 8631683
Filing Date: 2014-01-21
Classification: A61M,G01N

Abstract:
1. A dialysis system, comprising: a dialysis machine; a tube connected to the dialysis machine; a sensor system, comprising a resistive heater; and a microprocessor in communication with the plurality of sensors, wherein the microprocessor is configured to activate the resistive heater to adjust a temperature of dialysate flowing through a dialyzer of the dialysis system based on a temperature of fluid in the tube determined by the temperature sensing circuit, wherein fluid in the tube is blood, the tube is a venous line, and the dialysis system further comprises an arterial line and a second temperature sensor configured to measure a temperature of blood flowing through the arterial line, and wherein the microprocessor is configured to control the resistive heater in a manner to heat a bolus of dialysate to a temperature greater than a temperature of blood flowing through the dialysis system in order to heat blood flowing through the dialyzer, and to compare a temperature of blood in the arterial line as detected by the second temperature sensor to a temperature of blood in the venous line as detected by the infrared temperature sensor to determine whether recirculation is present.