Direct bone conduction stimulation: Ipsilateral effect of different transducer attachments in active transcutaneous devices

Rigato, Cristina, 1989 (author): Chalmers tekniska högskola,Chalmers University of Technology

Reinfeldt, Sabine, 1978 (author): Chalmers tekniska högskola,Chalmers University of Technology

Håkansson, Bo, 1953 (author): Chalmers tekniska högskola,Chalmers University of Technology

Fredén Jansson, Karl-Johan, 1988 (author): Chalmers tekniska högskola,Chalmers University of Technology

Renvall, Erik (author): Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för öron-, näs- och halssjukdomar,Institute of Clinical Sciences, Department of Otorhinolaryngology,University of Gothenburg

Eeg-Olofsson, Måns, 1967 (author): Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för öron-, näs- och halssjukdomar,Institute of Clinical Sciences, Department of Otorhinolaryngology,University of Gothenburg

(creator_code:org_t)

Elsevier BV, 2018
2018
English.
In: Hearing Research. - : Elsevier BV. - 0378-5955 .- 1878-5891. ; 361, s. 103-112

Related links:: https://doi.org/10.1...; show more...; https://research.cha... (primary) (free); https://gup.ub.gu.se...; https://doi.org/10.1...; https://research.cha...; https://research.cha...; show less...

Abstract Subject headings

Active transcutaneous bone conduction devices, where the transducer is implanted, are used for rehabilitation of hearing impaired patients by directly stimulating the skull bone. The transducer and the way it is attached to the bone play a central role in the design of such devices. The actual effect of varying the contact to bone has not been addressed yet. The aim of this study is therefore to compare how different attachment methods of the transducer to the bone for direct stimulation affect the ear canal sound pressure and vibration transmission to the ipsilateral cochlea. Three different attachments to the bone were tested: (A) via a flat small-sized surface, (B) via a flat wide surface and (C) via two separated screws. Measurements were done on four human heads on both sides. The attachments were compared in terms of induced cochlear promontory velocity, measured by a laser Doppler vibrometer, and ear canal sound pressure, measured by a low noise microphone. A swept sine stimulus was used in the frequency range 0.1-10 kHz. On an average level, the attachment method seems to affect the transmission mainly at frequencies above 5 kHz. Furthermore, the results suggest that a smaller contact surface might perform better in terms of transmission of vibrations at mid and high frequencies. However, when considering the whole frequency range, average results from the different attachment techniques are comparable. (C) 2018 The Authors. Published by Elsevier B.V.

MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Oto-rhino-laryngologi (hsv//swe)
MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Otorhinolaryngology (hsv//eng)
TEKNIK OCH TEKNOLOGIER -- Medicinteknik -- Medicinsk apparatteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Medical Engineering -- Medical Equipment Engineering (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP -- Medicinsk bioteknologi -- Biomaterialvetenskap (hsv//swe)
MEDICAL AND HEALTH SCIENCES -- Medical Biotechnology -- Biomaterials Science (hsv//eng)

By the author/editor: Rigato, Cristina ...; Reinfeldt, Sabin ...; Håkansson, Bo, 1 ...; Fredén Jansson, ...; Renvall, Erik; Eeg-Olofsson, Må ...

About the subject

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Otorhinolaryngol ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Medical Engineer ...; and Medical Equipmen ...

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Medical Biotechn ...; and Biomaterials Sci ...

By the university: University of Gothenburg; Chalmers University of Technology

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