Modeling and Simulation of Micromachined Needles

摘要

In this paper, the research and development of microneedles are reviewed briefly and microneedles are classified. The features of those microneedles are analyzed and discussed, and, based on analysis, a new microneedle structure is proposed. The proposed microneedle array structure uses a bi-mask process to facilitate sharp tips, a cylindric body and side ports. The proposed microneedle array has advantages over previous published results including easy fabrication and bonding, providing high needle density and robustness. In addition, the micromachined needle incorporates side ports which minimizes the potential for clogging. The microneedle array fabrication and mechanical properties are simulated with very satisfactory results.