Cochlear implantation using thin-film array electrodes

Kenneth C. Iverson, Pamela T. Bhatti, Jessica Falcone, Ramon Figueroa, Brian McKinnon

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Objective. Current limitations in language perception may stem from an inability to provide high-resolution sound input. Thin-film array technology allows for a greater density of stimulating sites within the limited diameter of the scala tympani. This study examines the use of a flexible carrier to achieve adequate depth of insertion. Study Design. A prospective human cadaveric temporal bone insertion analysis. Setting. Academic otolaryngology department and school of electrical and computer engineering collaboration. Methods. A prototype thin-film array electrode coupled with an insertion test device (ITD) was manufactured and inserted into 10 human cadaveric temporal bones. As controls, 2 additional temporal bones were implanted with the ITD only and 2 were unimplanted. Radiologic and histologic data were collected. Results. Ten thin-film array electrodes were successfully implanted into 10 individual temporal bones via round window (5) and cochleostomy (5) approaches. Seventeen millimeters of insertion was noted for each device, with an average angular insertion depth of 292° by radiographic measurements and 392° by histologic sectioning. Electrode distance to the modiolus averaged 0.88 mm by computed tomography and 0.67 mm by histologic measurements. Average percentage trauma was 26% for the ITD-backed arrays compared with 15% and 29% for ITD only and unimplanted temporal bones, respectively. Conclusion. Thin-film array electrodes coupled with an ITD were successfully inserted into the human cochlea with limited trauma. With continued development and testing of this electrode design, the thin-film array may improve the language perception achieved through cochlear implantation.

Original languageEnglish (US)
Pages (from-to)934-939
Number of pages6
JournalOtolaryngology - Head and Neck Surgery
Volume144
Issue number6
DOIs
StatePublished - Jun 1 2011
Externally publishedYes

Fingerprint

Cochlear Implantation
Temporal Bone
Electrodes
Equipment and Supplies
Language
Scala Tympani
Cochlea
Wounds and Injuries
Otolaryngology
Tomography
Technology

Keywords

  • Cochlear implant
  • Insertion test device
  • Temporal bone study
  • Thin-film array electrode

ASJC Scopus subject areas

  • Surgery
  • Otorhinolaryngology

Cite this

Cochlear implantation using thin-film array electrodes. / Iverson, Kenneth C.; Bhatti, Pamela T.; Falcone, Jessica; Figueroa, Ramon; McKinnon, Brian.

In: Otolaryngology - Head and Neck Surgery, Vol. 144, No. 6, 01.06.2011, p. 934-939.

Research output: Contribution to journalArticle

Iverson, Kenneth C. ; Bhatti, Pamela T. ; Falcone, Jessica ; Figueroa, Ramon ; McKinnon, Brian. / Cochlear implantation using thin-film array electrodes. In: Otolaryngology - Head and Neck Surgery. 2011 ; Vol. 144, No. 6. pp. 934-939.
@article{48b2a9bc993d41c596f231d69e1eeeb3,
title = "Cochlear implantation using thin-film array electrodes",
abstract = "Objective. Current limitations in language perception may stem from an inability to provide high-resolution sound input. Thin-film array technology allows for a greater density of stimulating sites within the limited diameter of the scala tympani. This study examines the use of a flexible carrier to achieve adequate depth of insertion. Study Design. A prospective human cadaveric temporal bone insertion analysis. Setting. Academic otolaryngology department and school of electrical and computer engineering collaboration. Methods. A prototype thin-film array electrode coupled with an insertion test device (ITD) was manufactured and inserted into 10 human cadaveric temporal bones. As controls, 2 additional temporal bones were implanted with the ITD only and 2 were unimplanted. Radiologic and histologic data were collected. Results. Ten thin-film array electrodes were successfully implanted into 10 individual temporal bones via round window (5) and cochleostomy (5) approaches. Seventeen millimeters of insertion was noted for each device, with an average angular insertion depth of 292° by radiographic measurements and 392° by histologic sectioning. Electrode distance to the modiolus averaged 0.88 mm by computed tomography and 0.67 mm by histologic measurements. Average percentage trauma was 26{\%} for the ITD-backed arrays compared with 15{\%} and 29{\%} for ITD only and unimplanted temporal bones, respectively. Conclusion. Thin-film array electrodes coupled with an ITD were successfully inserted into the human cochlea with limited trauma. With continued development and testing of this electrode design, the thin-film array may improve the language perception achieved through cochlear implantation.",
keywords = "Cochlear implant, Insertion test device, Temporal bone study, Thin-film array electrode",
author = "Iverson, {Kenneth C.} and Bhatti, {Pamela T.} and Jessica Falcone and Ramon Figueroa and Brian McKinnon",
year = "2011",
month = "6",
day = "1",
doi = "10.1177/0194599810397451",
language = "English (US)",
volume = "144",
pages = "934--939",
journal = "Otolaryngology - Head and Neck Surgery (United States)",
issn = "0194-5998",
publisher = "Mosby Inc.",
number = "6",

}

TY - JOUR

T1 - Cochlear implantation using thin-film array electrodes

AU - Iverson, Kenneth C.

AU - Bhatti, Pamela T.

AU - Falcone, Jessica

AU - Figueroa, Ramon

AU - McKinnon, Brian

PY - 2011/6/1

Y1 - 2011/6/1

N2 - Objective. Current limitations in language perception may stem from an inability to provide high-resolution sound input. Thin-film array technology allows for a greater density of stimulating sites within the limited diameter of the scala tympani. This study examines the use of a flexible carrier to achieve adequate depth of insertion. Study Design. A prospective human cadaveric temporal bone insertion analysis. Setting. Academic otolaryngology department and school of electrical and computer engineering collaboration. Methods. A prototype thin-film array electrode coupled with an insertion test device (ITD) was manufactured and inserted into 10 human cadaveric temporal bones. As controls, 2 additional temporal bones were implanted with the ITD only and 2 were unimplanted. Radiologic and histologic data were collected. Results. Ten thin-film array electrodes were successfully implanted into 10 individual temporal bones via round window (5) and cochleostomy (5) approaches. Seventeen millimeters of insertion was noted for each device, with an average angular insertion depth of 292° by radiographic measurements and 392° by histologic sectioning. Electrode distance to the modiolus averaged 0.88 mm by computed tomography and 0.67 mm by histologic measurements. Average percentage trauma was 26% for the ITD-backed arrays compared with 15% and 29% for ITD only and unimplanted temporal bones, respectively. Conclusion. Thin-film array electrodes coupled with an ITD were successfully inserted into the human cochlea with limited trauma. With continued development and testing of this electrode design, the thin-film array may improve the language perception achieved through cochlear implantation.

AB - Objective. Current limitations in language perception may stem from an inability to provide high-resolution sound input. Thin-film array technology allows for a greater density of stimulating sites within the limited diameter of the scala tympani. This study examines the use of a flexible carrier to achieve adequate depth of insertion. Study Design. A prospective human cadaveric temporal bone insertion analysis. Setting. Academic otolaryngology department and school of electrical and computer engineering collaboration. Methods. A prototype thin-film array electrode coupled with an insertion test device (ITD) was manufactured and inserted into 10 human cadaveric temporal bones. As controls, 2 additional temporal bones were implanted with the ITD only and 2 were unimplanted. Radiologic and histologic data were collected. Results. Ten thin-film array electrodes were successfully implanted into 10 individual temporal bones via round window (5) and cochleostomy (5) approaches. Seventeen millimeters of insertion was noted for each device, with an average angular insertion depth of 292° by radiographic measurements and 392° by histologic sectioning. Electrode distance to the modiolus averaged 0.88 mm by computed tomography and 0.67 mm by histologic measurements. Average percentage trauma was 26% for the ITD-backed arrays compared with 15% and 29% for ITD only and unimplanted temporal bones, respectively. Conclusion. Thin-film array electrodes coupled with an ITD were successfully inserted into the human cochlea with limited trauma. With continued development and testing of this electrode design, the thin-film array may improve the language perception achieved through cochlear implantation.

KW - Cochlear implant

KW - Insertion test device

KW - Temporal bone study

KW - Thin-film array electrode

UR - http://www.scopus.com/inward/record.url?scp=79961176144&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79961176144&partnerID=8YFLogxK

U2 - 10.1177/0194599810397451

DO - 10.1177/0194599810397451

M3 - Article

VL - 144

SP - 934

EP - 939

JO - Otolaryngology - Head and Neck Surgery (United States)

JF - Otolaryngology - Head and Neck Surgery (United States)

SN - 0194-5998

IS - 6

ER -