Fully integrated circulatory system in a torso phantom for WIMD read range performance measurements

To test Wireless Implantable Medical Devices (WIMD), we need test benches that replicate the human body as closely as possible, called phantoms. The phantoms are used to get performance results prior to animal testing. For the phantom to replicate as close as possible the body part where the medical device will be implanted, the phantom needs to be accurate in terms of anatomy and dielectric properties. We have been developing a medical device which intends to measure the blood pressure directly within the pulmonary artery. This medical device aims to wirelessly transfer the data from a pressure sensor to outside the body. A torso phantom was previously prototyped, using 3D printed organs filled with liquid replicating the dielectric properties of the different biological layers at the frequency of interest (M. Pigeon, B. O'Flynn, J. Barton and P. O'Sullivan, "3D printed torso phantom for UHF WIMD measurements," 2021 IEEE APS/URSI, Singapore, Singapore, 2021, pp. 361-362).