Adjustable resonant charging matches an implantable neurostimulator's natural frequency to improve coupling and reduce heating.
An external battery housing boosts implantable stimulator capacity and longevity while preserving compact size through hermetic sealing.
A sealed external battery layout increases implantable stimulator capacity and longevity without enlarging the implanted housing.
Resistor-ratio current gain and op-amp feedback cut multi-electrode stimulator turn-on time while improving low-current accuracy.