Cochlear Limited

Thomas Cooney

Oliver John Ridler

Adam Mujaj

Werner Meskens

Guilhem Yvan Vavelin

Systems and apparatuses are used to transmit data between external and internal portions of auditory prostheses or other medical devices. The external portion of the auditory prosthesis includes a magnet and an implanted coil that provides stimulation to the device recipient. A shaped shield material can be placed between the external coil and the sound processing hardware to improve efficiency and effectiveness between the external coil and implanted coil. Adverse effects on tuning frequencies can be reduced by disposing the shield material away from the magnet.

Shielding device for signal transmission coil

An apparatus includes implantable first circuitry configured to wirelessly receive power from a device external to the recipient's body, implantable second circuitry configured to provide stimulation signals to a portion of the recipient's body, and implantable third circuitry, at least a portion of the first circuitry and at least a portion of the third circuitry forming a series resonant tank circuit configured to capacitively couple the second circuitry to the first circuitry while galvanically isolating the second circuitry from the first circuitry, such that at least a portion of the electric power is transferred from the first circuitry to the second circuitry through the third circuitry whilst preventing stimulation currents.

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Macquarie University, Australia

Thomas Cooney