Polymeric fiber sensors for insertion forces and trajectory determination of cochlear implants in hearing preservation

Dinusha Serandi Gunawardena, Jingxian Cui, Xin Cheng, Arvind N. Vadivelu, Alireza Mohammadi, Geraldi Edbert, Zhengyong Liu, Bernard Chen, Denny Oetomo, Stephen O'Leary, Hwa Yaw Tam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


The level of hearing restoration in patients with severe to profound sensorineural hearing loss by means of cochlear implants (CIs) has drastically risen since the introduction of these neuroprosthetics. The proposed CI integrated with polymer optical fiber Bragg gratings (POFBGs) enables real-time evaluation of insertion forces and trajectory determination during implantation irrespective of the speed of insertion, as well as provides high signal quality, low stiffness levels, minimum induced stress even under forces of high magnitudes and exhibits significant reduction of the risk of fiber breakage inside the constricted cochlear geometry. As such, the proposed device opens new avenues towards atraumatic cochlear implantations and provides a direct route for the next generation of CIs with intraoperative insertion force assessment and path planning capacity crucial for surgical navigation. Hence, adaptation of this technology to clinical reality holds promising prospects for the hearing impaired.

Original languageEnglish
Article number114866
JournalBiosensors and Bioelectronics
Publication statusPublished - 15 Feb 2023


  • Cochlear implants
  • Hearing preservation
  • Insertion force measurement
  • Polymeric optical fiber Bragg gratings
  • Trajectory determination

ASJC Scopus subject areas

  • Biotechnology
  • Biophysics
  • Biomedical Engineering
  • Electrochemistry


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