Characterization of a Pump - Catheter System for flow control in an intracorporeal Membrane Oxygenator
|Title||Characterization of a Pump - Catheter System for flow control in an intracorporeal Membrane Oxygenator|
|Publication Type||Conference Paper|
|Year of Publication||2019|
|Authors||Elenkov M, Janeczek C, Lukitsch B, Ecker P, Keck T, Harasek M, Gföhler M|
|Conference Location||Vienna, Austria|
Acute respiratory failure is a prevalent pathological state among patients worldwide. Treatment often requires mechanical ventilation, however, most respirators work with overpressure, thus they expose the lungs to non - physiologically high pressures and often injure them increasing overall mortality. An alternative is to oxygenate the blood extracorporeally, but that means guiding large blood volumes out of the body, which inevitably increases the risk of thrombosis, embolism, hemorrhage, and infections.A minimally invasive intracorporeal membrane oxygenator that overcomes most of the shortcomings of currently available devices is proposed as an alternative. A key limitation with intracorporeal oxygenators (IVOX, Hattler catheter) is the lack of blood flow control. Thus issues such as thrombosis and vein occlusion often arise, leading to insufficient gas transfer and cardiovascular complications. In this work, a system characterization approach is proposed that enables pump flow estimation which can subsequently be utilized for sensorless flow control.