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[Research on wireless power transmission for gastrointestinal microsystems based on inductive coupling].
1Institute of Precise Engineering and Intelligent Microsystems, Shanghai Jiaotong University, Shanghai 200240, China. maguanying@sjtu.edu.cn
Summary
This study presents a wireless power transmission method for gastrointestinal microsystems using electromagnetic coupling. Experiments achieved over 200mW transmission, validating the method
Area of Science:
- Biomedical Engineering
- Electrical Engineering
- Electromagnetics
Context:
- Gastrointestinal microsystems require efficient and reliable power sources.
- Existing power solutions for internal medical devices face challenges with miniaturization and biocompatibility.
- Wireless power transfer offers a promising alternative for powering implantable devices.
Purpose:
- To propose and validate a wireless power transmission method for gastrointestinal microsystems.
- To analyze the impact of coil misalignment on power transmission efficiency.
- To optimize electric parameters for maximizing received power.
Summary:
- A wireless power transmission method utilizing electromagnetic coupling was developed for gastrointestinal microsystems.
- Mutual inductance was calculated to analyze the coupling coefficient considering coil misalignments.
- A power transmission model was established, and electric parameters were optimized for maximum received power under weak coupling conditions.
- Two methods to enhance transmission efficiency were identified from the derived formula.
- Experimental results demonstrated a transmission power exceeding 200mW with optimal coil alignment.
Impact:
- This research provides a feasible wireless powering solution for gastrointestinal microsystems.
- The findings can contribute to the development of advanced ingestible electronic devices for diagnostics and therapeutics.
- Improved power transfer efficiency and reliability are crucial for the clinical translation of such microsystems.
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