Design Of Implantable MEMS Sensors ForEarly Stenosis Detection

This paper examines the design of implantable micro-electro-mechanical systems (MEMS) for long-term in situ monitoring of blood flow. The objective is to develop a smart wireless sensing unit for early stenosis detection. The design includes considerations of non-Newtonian hemodynamics, nonlinear material behavior of the vessel wall and fatty plaque buildup, sensitivity and reliability of the sensors, as well as the use of surface coatings for biocompatibility and non-adhesion of blood constituents. Overviews of the fluid model, material model, sensor design configuration, and surface coating selection are presented. Finally, implications of the results are discussed.