A Preliminary Multi-Physics Study for Intra-Cardiac Communication Based on Biventricular Model

Wireless modules have become a crucial component of many modern implantable medical devices (IMDs), including those used for cardiac applications. In this study, we conducted a preliminary multi-physics simulation for intra-cardiac communication based on a simplified biventricular geometry. Initially, we simulated the cardiac cycle, demonstrating the deformation of the biventricular, and in one scenario, two cardiac implants were positioned within the cardiac chamber, with relative displacement observed. Based on electromagnetic simulations, we analyzed the fluctuations in coupling at different frequencies (6.78, 13.56, 433, 915, and 2400 MHz) during myocardial mechanical deformation over a simulated cardiac cycle. The method used in this study provides a paradigm for the intra-cardiac implant investigation, and the results are a major component in the link budget analysis.