New design of micropump used in Smart bandaid microsystem

Our work aims acceleration of wound healing by using intelligent bandaid. The functioning of the proposed device is inspired from a system used for treatment of the chronic wounds called VAC (Vacuum Assisted Closure). The proposed system offers a new method for the treatment of wounds. It principle mainly consists on decreasing the pressure on the surface wound under the atmospheric pressure (<760mmllg) In this way, a vacuum is produced that enhances the absorption process of the exudates. Afterwards, antiseptic solutions can be injected in order to eliminate the infectious agents. The proposed study aims to design a miniature device by using the same principle of VAC system. For that, we propose 2D modeling by using comsol Multiphysics, which allows optimizing the design of microsystem platform inspired of VAC system. Here, we demonstrate that VAC microsystem design can achieve a vacuum around 10(3)Pa and drug injection of few microliters by 10 seconds, by using PZT thin film like piezoelectric material. These results allow us to conduct preliminary tests to develop a smart demonstrator.