10.18453/rosdok_id00005497 Rao, Yongchen Yongchen Rao http://d-nb.info/gnd/1237705991 Universität Rostock 2025 620 Engineering & allied operations 621.3 Electrical Engineering, Electronics 2025 en https://purl.uni-rostock.de/rosdok/id00005497 urn:nbn:de:gbv:28-rosdok_id00005497-1 Implantable medical devices (IMDs) are limited by battery life. This thesis investigates implantable thermoelectric generators (ITEGs) that convert body heat into electricity for self-sustaining IMDs. A novel design using a biocompatible PEEK housing with integrated heat conductors was proposed. Comprehensive simulations employed simplified and detailed human models to optimize performance. For fabrication, a novel method created TEGs with high-aspect-ratio thermolegs, maximizing power. A compact TEG with an integrated boost converter was also developed.