Wireless energy transfer to an implanted neurostimulator
Our client asked:
Traditional near field inductive technology requires coils to be well aligned and close to the skin to enable efficient energy transfer to an implanted neurostimulator. Is there another approach that would provide the patient with more freedom?
The project story:
Sagentia Medical took the following approach:
Analysis of near field, far field and mid field energy transfer from first principles.
- Inductive coupling <100MHz
- Nearfield coupling > 100MHz
- Midfield coupling, using optimised antenna geometry to minimise nearfield losses in tissue
- Far field coupling using electrically small antennas
Generation of mathematical models incorporating body material to enable comparison between the different regimes.
Took into account SAR (Specific Absorption Rate) to validate the safety of power transfer.
Results: deliverables and outcomes
We provided our client with a much deeper understanding of the fundamental scientific principles of their neuro wearable system.
Our output included a comprehensive toolkit for future development and assessment of their algorithm.
Our client recognised us as their preferred “partner for difficult problems”.
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