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Related Experiment Videos

Design for a simplified cochlear implant system.

Soon Kwan An1, Se-Ik Park, Sang Beom Jun

  • 1School of Electrical Engineering and Computer Science, Seoul National University, Seoul 151-744, Korea. soonkwan@helios.snu.ac.kr

IEEE Transactions on Bio-Medical Engineering
|June 8, 2007
PubMed
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This study presents a simplified, low-cost cochlear implant (CI) system designed for developing countries. The system utilizes continuous interleaved sampling (CIS) for 8-channel processing and features a novel electrode array for improved accessibility.

Area of Science:

  • Biomedical Engineering
  • Audiology
  • Medical Devices

Background:

  • Cochlear implants (CIs) are crucial for hearing restoration but are often expensive and complex.
  • Widespread adoption in developing countries is hindered by cost and technological barriers.

Purpose of the Study:

  • To design and describe a simplified, cost-effective cochlear implant (CI) system suitable for developing nations.
  • To detail the technological components and strategies employed in this novel CI system.

Main Methods:

  • An 8-channel processing system using continuous interleaved sampling (CIS) strategy.
  • A generic digital signal processing (DSP) chip with Fast Fourier Transform (FFT) for filtering.
  • Inductive data transmission via Pulse Width Modulation (PWM) and Amplitude Shift Keying (ASK) modulation.

Related Experiment Videos

  • A custom receiver-stimulator chip with pulse counting demodulation and charge-balanced biphasic pulses (1000 pulses/s/electrode).
  • A hermetically sealed titanium package for the receiver-stimulator chip.
  • A low-cost metal-silicon hybrid mold for fabricating an intracochlear electrode array with 16 contacts.

    • Main Results:

    • Successful design and description of a simplified CI system.
    • Demonstration of an 8-channel processing and stimulation strategy.
    • Development of a custom receiver-stimulator chip and a novel electrode array fabrication method.
    • Integration of efficient data transmission and backward telemetry.

    Conclusions:

    • The developed simplified CI system offers a viable, cost-effective solution for hearing restoration in resource-limited settings.
    • The innovative design addresses key challenges for widespread CI accessibility in developing countries.
    • Further research and clinical trials are warranted to validate the efficacy and safety of this simplified CI system.