Study on Mechanical Properties for Modeling and Simulation of microneedles for medical applications

摘要

A MEMS Microneedle Array was modeled, designed and simulated. The mechanical properties of the microneedle structure were theoretically analyzed including analysis of fracture strength and distribution of von mises stress. The conditions of initial insertion and after initial insertion were considered. The detail linear and nonlinear buckling analyses on needle structure were also presented. Two modes of buckling were come to and discussed. The fabrication of microneedle array was simulated by employing Intellisuate and bi-mask technique. The microneedle array can be used in microsystem for in-vivo fluid sampling and drug delivery.