Characterization of a Pump - Catheter System for flow control in an intracorporeal Membrane Oxygenator

  • Posted on: 3 December 2019
  • By: ygfoehler
TitleCharacterization of a Pump - Catheter System for flow control in an intracorporeal Membrane Oxygenator
Publication TypeConference Paper
Year of Publication2019
AuthorsElenkov M, Janeczek C, Lukitsch B, Ecker P, Keck T, Harasek M, Gföhler M
Conference NameESB
Date Published07/2019
PublisherTU Verlag
Conference LocationVienna, Austria
ISBN Number978-3-903024-96-0
Abstract

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.