Structural analysis of hollow titanium microneedle for amniotic fluidic extraction

This paper we present a new design of hollow out of plane titanium microneedle array for aminioic fluid extraction. The structural analyses have been made to determine the mechanical strength of microneedle array. The analysis has involved simulation of three-dimensional model of microneedle array. This analysis predicts the deformation when bending and axial loads are applied to the needle. Successful penetration into skin was verified by measuring the insertion force of the microneedle. The lumen region is made hollow such that the fluid extraction is more reliable than the tapered needle. The extracted amniotic fluid is used for analysis of down syndrome in the fetus. This needle is more reliable than the normal hypodermic needle which has less insertion pain, skin clogging effect is less, no blood loss and safe procedure for the mother and the fetus. This microneedle is designed and simulated using COMSOL Multi physics simulation software.