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Biomedical Microdevices

, 17:86 | Cite as

Novel scalable and monolithically integrated extracorporeal gas exchange device

  • Tina Rieper
  • Claas MüllerEmail author
  • Holger Reinecke
Article

Abstract

A novel extracorporeal gas exchange device (EGED) is developed, implemented and characterized. The aim hereby is to overcome drawbacks of state-of-the-art devices and of state-of-science approaches, like their labor intensive fabrication and their low volume density of the gas exchange area, respectively. As a consequence of the stacked setup of alternating layers of the blood compartment and the ventilation gas compartment, the developed EGED allows for double sided gas exchange. Furthermore, it enables an adaption to the diversity of medical requirements by scaling the amount of layers. The developed fabrication chain is used to fabricate leakage-free evaluation models and allows for a transition to automated fabrication. The EGED is completely fabricated in polydimethylsiloxane (PDMS) and features diffusion membranes, which are separating the compartments, with a mean thickness of 90 μm. With the evaluation models and oxygen as ventilation gas an oxygen transfer of 60 ml/lblood (25 ml/(min m2)) and a carbon dioxide transfer of 70 ml/lblood (30 ml/(min m2)) are achieved. The linear scalability of the concept as well as the functionality of the EGED with air as ventilation gas is shown.

Keywords

Extracorporeal gas exchange Silicone rubber processing Gas transfer simulation Large area bonding of microstructured PDMS sheets Microstructured, thin PDMS sheets 

Notes

Acknowledgments

The authors gratefully acknowledge the fruitful collaboration with Novalung GmbH, Heilbronn, Germany and their support by performing the gas exchange characterization experiments

Compliance with ethical standards

This study has been supported by Arbeitsgemeinschaft industerieller Forschungsvereinigungen “Otto von Guericke” e.V. (AiFKF2162012FO0). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Laboratory for Process Technology, Department of Microsystems Engineering - IMTEKUniversity of FreiburgFreiburgGermany

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