An experimental study was conducted to investigate the unsteady micro-flow driven by an insulin pump commonly used in continuous subcutaneous insulin infusion (CSII) therapy. A microscopic particle image velocimetry (PIV) system was used to characterize the transient behavior of the micro-flow upon the pulsed excitation of the insulin pump in order to elucidate the underlying physics for a better understanding of the microphysical process associated with the insulin delivery in CSII therapy. The effects of air bubbles entrained inside the micro-sized CSII tubing system on the insulin delivery process were also assessed based on the micro-PIV measurements. While most solutions to insulin occlusion-related problems are currently based on clinical trials, the findings derived from the present study can be used to provide a better guidance for the troubleshooting of insulin occlusion in CSII therapy.
Experiments in Fluids – Springer Journals
Published: Dec 31, 2010
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