FSI Model to Investigate Effects of Covering Material on Invasive Blood Pressure Sensor Performance

In general, many of the in vivo measurements taken inside the body have direct contact with body fluids and most importantly, blood. Biocompatibility is required to prevent any adverse effects that may result from this interaction. On the other hand, optimal performance of the medical device is also a concern. For Example, the performance of invasive solid-state blood pressure sensors may be affected by the packaging materials used to achieve biocompatibility.This paper investigates the effect of different packaging biomaterials with different thicknesses on the solid-state blood pressure sensor response under dynamic measurement. Using fluid-structure interaction formulism, finite element analysis is used to explore the effect of the packaging material on the sensor’s response. In addition, a comparison of the different biomaterials effects is presented to enable designers to select the optimal configuration.