Modeling of Valveless Piezoelectric Micropump for Insulin Delivery System

Gourav Vinayak Shet; S. M. Kulkarni; Navin Karanth P.

doi:10.37591/joma.v2i1.7260

Abstract

In order to cope up with the rising needs of micro-electro-mechanical systems (MEMS) in the fields of biological and medical applications, important progress of the micropump as one of the essential fluid handling devices to deliver precise amounts of fluids is considered. The micropump consists of two fluid diffuser/nozzle elements on each side of a chamber volume with an oscillating diaphragm. The vibrating diaphragm produces an oscillating chamber volume, which altogether with the two fluid-flow-rectifying diffuser/nozzle elements creates a one-way fluid flow. In this paper, a SIMULINK model for the simulation of the valveless micropump is developed. The parameters of the micropump are varied in order to optimize the performance as per the application. In addition to the SIMULINK model, analysis of the piezoelectric membrane deflection is done in COMSOL to predict the performance of the micropump working. Results obtained through the developed model compare well with earlier results. The volumetric discharge versus pressure difference is used for characterizing the pump performance.