Microneedle arrays for drug delivery and fluid extraction

Fabrication results for a novel MEMS-based microneedle array are presented in this paper. The microneedle array design is introduced following a brief survey of previously published design techniques. The microneedle array is fabricated by employing a bi-mask technique to facilitate sharp tips, a cylindric body and side ports. The array has advantages over previously published results including ease of fabrication and bonding, and high needle density and robustness. In addition, the microneedle comprises side ports which minimizes the potential for clogging. This microneedle array can be used for fluid extraction and drug delivery systems; e.g., biological sampling, and insulin delivery into the human body.