Design and Simulation of MEMS Based Piezoelectric Insulin Micro-Pump
One of the most effective treatments for diabetes type 1 and 2 is the administering Insulin. The design of positive volumetric insulin pump is significantly a multiphysics problem where the volumetric change of the main pump chamber and the pumped fluid are directly coupled. We used COMSOL Multiphysics® to investigate the performance of a MEMS based Insulin Micro-Pump with a Piezoelectric actuator pumping a viscous Newtonian fluid. The model captures the accumulated out-flow, the netflow or flow fluctuations based on deflection of piezoelectric actuator which moves with the diaphragm disk in positive-negative directions, to induce discharge pressures at microneedle array based on different input voltages and different exciting frequencies. Three COMSOL Multiphysics® interfaces; Solid Mechanics, Piezoelectric Devices, and Fluid-Structure Interaction were used in this study.