Performance and scaling effects in a multilayer microfluidic extracorporeal lung oxygenation device

Area of Science:

• Biomedical Engineering
• Medical Devices
• Microfluidics

Background:

• Microfluidic fabrication offers a promising platform for extracorporeal lung assist devices.
• These systems mimic human vasculature, featuring physiologically representative blood flow paths and thinner membranes compared to existing technologies.

Purpose of the Study:

• To design, fabricate, and characterize multilayer microfluidic oxygenators.
• To investigate scaling effects on fluid mechanical resistance and oxygen transfer efficiencies in these devices.

Main Methods:

• Fabrication and characterization of multilayer microfluidic oxygenators.
• Analysis of fluidic resistance, oxygen transfer rates, and scaling effects related to device layers.

Main Results:

• Fluidic resistance of interconnects becomes more significant as devices scale to many layers.
• Blood channel depth and membrane thickness impact oxygen transfer rates.
• Oxygen transfer efficiency is dependent on the number of layers in the device.

Conclusions:

• Multilayer microfluidic oxygenators show potential for improved performance in extracorporeal support.
• Understanding scaling effects is crucial for developing organ-scale devices for clinical use.