Abstract

Wearable Microfluidics For Real-Time Personal Monitoring

Martyn Boutelle, Professor of Biomedical Sensors Engineering, Imperial College London

Tissue functions at a cellular level by exchange of molecules either between cells and blood or between the cells themselves. This produces patterns of molecular change that are diagnostic of cellular processes whose origin can be physiological (exhaustion, pregnancy) or pathological (ischemia, renal failure, cancer). Our technologies have now developed to a point where we can aspire to do more than this, to measure from patients in real-time. The has the great benefit that it is them possible to understand the evolution of disease, the effectiveness of treatments, and ultimately to guide treatment. In this presentation I will describe the development of microfluidic devices connected to wireless electronics for transplant organ, patient and athlete monitoring. Tissue sampling is via an integrated microfluidic device, a microdialysis probe. Molecular biomarkers are measured using microscale integrated amperometric biosensors and solid-contact ion-selective electrodes (ISE) for tissue ionic balance. For detailed patterns of ionic responses we have developed  high density Field Effect Transistor (FET) array which function as ISEs within the flow stream. We have also edevelodp multiphase  flow microfluidic systems for highest time resolution.The presentation with describe the design and optimization challenges and include clinical examples from our recent work.