Smart Artificial Lung And Perfusion Systems
AssigneeThe Regents of the University of Michigan
InventorsJoseph POTKAY, Robert H. BARTLETT, Alvaro ROJAS-PENA
Life of this patent
Estimating the term…
Abstract
An artificial lung system for a patient having a membrane lung system having an gas inlet, a blood inlet, a blood outlet, and an exhaust; a gas system operably coupled to the gas inlet of the membrane lung system; a gas phase CO2 sensor disposed downstream of the exhaust of the membrane lung system and monitoring an exhaust gas CO2 (EGCO2) level and/or an blood oxygen saturation sensor disposed upstream of the blood inlet of the membrane lung system and monitoring a blood oxygen saturation level; and a feedback controller receiving the CO2 signal and/or blood oxygen saturation signal and outputting a control signal to control gas flow and/or blood flow.
Claims14
An artificial lung system for a patient, the system comprising:
- a membrane lung system having an gas inlet, a blood inlet, a blood outlet, and an exhaust;
- an air pump operably coupled to the gas inlet of the membrane lung system for introducing air to the membrane lung system;
- a gas phase CO2 sensor disposed downstream of the exhaust of the membrane lung system and monitoring an exhaust gas CO2 (EGCO2) level, the gas phase CO2 sensor outputting a CO2 signal in response to a detected EGCO2 level;
- and
- a feedback controller receiving the CO2 signal and outputting an air pump control signal to the air pump responsive thereto such that if EGCO2 content increases relative to a target CO2 level, the feedback controller increases sweep flow of the air pump to remove more CO2 from the blood flowing through the blood inlet to the blood outlet, if EGCO2 content decreases relative to the target CO2 level, the feedback controller automatically decreases sweep flow of the air pump to reduce CO2 removal.
An artificial lung system for a patient, the system comprising:
- a membrane lung system having an gas inlet, a blood inlet, a blood outlet, and an exhaust;
- a gas system operably coupled to the gas inlet of the membrane lung system for introducing gas to the membrane lung system;
- a gas phase CO2 sensor disposed downstream of the exhaust of the membrane lung system and monitoring an exhaust gas CO2 (EGCO2) level, the gas phase CO2 sensor outputting a CO2 signal in response to a detected EGCO2 level;
- and
- a feedback controller receiving the CO2 signal and outputting an gas system control signal to the gas system responsive thereto such that if EGCO2 content increases relative to a target CO2 level, the feedback controller increases sweep flow of the gas system to remove more CO2 from the blood flowing through the blood inlet to the blood outlet, if EGCO2 content decreases relative to the target CO2 level, the feedback controller automatically decreases sweep flow of the gas system to reduce CO2 removal.
An artificial lung system for a patient, the system comprising:
- a membrane lung system having an gas inlet, a blood inlet, a blood outlet, and an exhaust;
- a gas system operably coupled to the gas inlet of the membrane lung system for introducing gas to the membrane lung system;
- a blood oxygen sensor disposed upstream of the blood inlet of the membrane lung system and monitoring a blood oxygen saturation level, the blood oxygen saturation sensor outputting a blood oxygen saturation signal in response to a detected blood oxygen saturation level;
- and
- a proportional-integral-derivative (PID) feedback controller receiving the SvO2 signal and outputting a blood flow control signal to control the flow of blood through the membrane lung system.
Dependencies are inferred from the claim text.