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[Clarion 16 cochlear implant (System introduction and use experience in Japan]
S Funasaka1, A Tomizawa, H Ueda
1Department of Otolaryngology, Tokyo Medical College.
Nihon Jibiinkoka Gakkai Kaiho
|June 27, 1998
Summary
The Clarion cochlear implant, approved in 1996, demonstrated effective "open-set" speech perception in two patients using the continuous interleaved sampling (CIS) method. This early success highlights the device's potential for hearing restoration.
Area of Science:
- Otorhinolaryngology
- Biomedical Engineering
- Neuroscience
Background:
- The Clarion cochlear implant, developed in the USA, received FDA approval in August 1996.
- The device comprises an implantable cochlear stimulator (ICS), speech processor with headpiece, clinician's programming system, and a portable tester.
Observation:
- Two patients underwent surgery in October 1996, with 16 electrodes (8 pairs) implanted in the cochlea.
- Mapping was conducted three weeks post-operation.
- The continuous interleaved sampling (CIS) stimulation-coding method was utilized.
Findings:
- Both patients achieved good speech perception in "open-set" conditions solely with the cochlear implant.
- The device supports stimulation over 8 channels, regardless of the coding method used.
Implications:
- The Clarion cochlear implant shows promise for restoring hearing and improving speech understanding in individuals with severe hearing loss.
- Further application of the compressed analogue (CA) stimulation-coding method warrants investigation.