Conformal loop antenna for an active drug delivery device operating at 900 MHz

Drug delivery devices have been widely considered for the treatment of chronic ailments as they can provide physicians the capability of controlling key therapy indexes. An active device consists of a RF system that can be triggered wirelessly to release drug formulations from the device. In this paper, a conformal loop antenna is designed around the outer wall of a reservoir. The device structure and placement of antenna are also elucidated. The CST Gustav voxel human body model is used to perform numerical study of the antenna to investigate its performance for implantable applications. According to the simulation results, the proposed conformal antenna has shown reflection coefficient of -19.68 dB at the desired frequency of 900 MHz. The concept of electro-thermal process for disintegrating the reservoir membrane is also discussed.