Implanted electronic devices generate heat that can alter local blood flow and induce thermal necrosis in adjacent brain parenchyma. This study details finite element modeling (FEM) of bio-heat transfer in human cranial geometry, determining safe operating envelopes under ISO 14708-3.
Pennes bio-heat equations demonstrate that spreading thermal dissipation across a 40 mm titanium package with thermal via arrays keeps cortex temperature increases below 0.35°C under continuous telemetry.
Embedded digital temperature sensors poll package thermistors every 100 milliseconds; if heat dissipation approaches safety margins, telemetry frame rates are automatically throttled.