Development of a steerable cochlear implant electrode array

Bernard K. Chen, H. N. Kha, G. M. Clark

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

5 Citations (Scopus)


Development of a new steerable electrode array with embedded nitinol shape memory alloy actuators is described in this paper. The risk of damaging the basilar membrane during insertion of electrode array into the human cochlear is expected to be significantly reduced with the ability to redirect the tip of the electrode array at the critical hook region. The final position of this electrode array can also be adjusted to lie beneath the basilar membrane inside the scala tympani for delivery of neurotrophins (growth factors). The bending behaviour of the steerable electrode array and its trajectories during insertion into the scale tympani were predicted using a 3D finite element model. Results from the model have shown that the new electrode array can be steered through the critical ‘hook’ region and be accurately positioned for delivery of neurotrophins.

Original languageEnglish
Title of host publication3rd Kuala Lumpur International Conference on Biomedical Engineering 2006
Place of PublicationGermany
Number of pages4
ISBN (Electronic)9783540680161
Publication statusPublished - 1 Jan 2007
EventKuala Lumpur International Conference on Biomedical Engineering (BIOMED) 2006 - Palace of the Golden Horses, Kuala Lumpur, Malaysia
Duration: 11 Dec 200614 Dec 2006
Conference number: 3rd (Proceedings)


ConferenceKuala Lumpur International Conference on Biomedical Engineering (BIOMED) 2006
Abbreviated titleBIOMED 2006
CityKuala Lumpur
Internet address


  • Basilar membrane
  • Cochlear implant
  • Electrode array
  • Neurotrophins. Critical hook region
  • Residual hearing

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