Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : June 28, 2023 - July 01, 2023
We have aimed to alleviate pain in diabetic patients by developing minimally invasive microneedles. In this study, a microneedle with a liquid suction mechanism was developed to extract a target volume of 0.3 μl of blood. Our approach mimics the capillary force and water-absorbing behavior of water strider legs, and we fabricated a plate to imitate their microstructure. The flow rate of water and blood was measured to evaluate the performance of the microneedles. The desired blood absorption volume was achieved by applying hydrophilic treatment to the microstructure. Microneedle with a liquid suction mechanism was developed based on the principle of improving capillary force by adding microstructures that mimic the legs of a crucial carp. The effects of microstructure shape and density on suction speed were evaluated using water and blood as suction targets.
