Coupling by volume conduction as a wireless power transfer and communications method for threadlike biomedical implants.
Although the use of volumetric conduction to power wireless implants has been experimentally validated in recent years, a theoretical framework to determine the power and efficiency obtained by minimally invasive implants has not been established yet. This thesis aims to develop and validate these m...
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| Tipo de recurso: | tesis doctoral |
| Estado: | Versión publicada |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | CBUC, CESCA |
| Repositorio: | TDR. Tesis Doctorales en Red |
| OAI Identifier: | oai:www.tdx.cat:10803/675878 |
| Acceso en línea: | http://hdl.handle.net/10803/675878 |
| Access Level: | acceso abierto |
| Palabra clave: | Wireless power transfer Biomedical implants Volume conduction 62 |
| Sumario: | Although the use of volumetric conduction to power wireless implants has been experimentally validated in recent years, a theoretical framework to determine the power and efficiency obtained by minimally invasive implants has not been established yet. This thesis aims to develop and validate these models. Firstly, an analytical model is presented to determine the maximum power an implant can locally obtain using volume conduction. It was expanded to model the complete transmission link by using a multiport network and was fitted using parameters obtained from human MRI images. Finally, the provided model is rearranged to model communications based on volume conduction. The results demonstrate that powers of mW can be obtained using submillimetric electrodes if they are spaced a few centimeters apart (> 2 cm). Therefore, this thesis contributes to establishing the theoretical framework of volume conduction and paved the development of new minimally invasive implants. |
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