Bi-micropump integrated in an electronic micro-device like patch used to healing of wounds.

Abstract

Various biomedical great challenges facing our society and the world can be addressed by interfacing biology and medicine with micro and nanoscale technologies. Knowledge and practices in the health field are constantly changing due to new and emerging technologies. These changes improve the quality of diagnosis and care for patients. However, this abundance of innovations is not necessarily easy to follow for all. Thanks to microsystems, medicine knew made remarkable inroads through innovative electronic application to the micrometer scale. This miniaturization has improved diagnosis and treatment of diseases by ultra-miniaturized medical devices. Our work is clearly positioned in this field. Here, we proposed a design suited to trapping of exudate and the release of the active particles for wound healing. The response of our micro-actuator is analyzed quantitatively by implementing a finite element model with the Comsol Multiphysics software, and by modeling the piezoelectric response. This microdevice is composed of two concentric reservoirs combined with piezoelectric micro-actuators. The first reservoir is used for the aspiration of exudate. The second is used for the injection of a drug. On these reservoirs, we superimpose piezoelectric micro actuators for pumping the exudate and the drug injection.