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Otol Neurotol. 2014 Aug;35(7):1242-7. doi: 10.1097/MAO.0000000000000351.

Intraoperative measurement for a new transcutaneous bone conduction hearing implant.

Author information

1
*Department of Otorhinolaryngology, Karl Landsteiner University Hospital, St. Pölten, Austria; †Karl Landsteiner Institut für implantierbare Hörsysteme; and ‡Center for Anatomy and Cell Biology, Department of Systematic Anatomy, Medical University Vienna, Austria.

Abstract

OBJECTIVE:

To investigate the possibility of using a modified reverse transfer function (RTF) measurement intraoperatively during surgery of a new transcutaneous bone conduction hearing implant to evaluate the status of the device.

METHODS:

Tests were performed on a cadaver skull (preclinically) and two conductive hearing loss patients implanted with a new transcutaneous bone conduction implant. During intraoperative activation, the RTF was measured using a microphone attached perpendicularly and directly to the skin in the middle section of the forehead.

RESULTS:

The RTF could be measured for all frequencies from 500 to 6, 000 Hz.

CONCLUSION:

The usage of an intraoperative RTF measurement may be a good method to verify the mechanical coupling of the bone conduction floating mass transducer and to test the functional integrity of the implant in an objective way.

PMID:
24751748
DOI:
10.1097/MAO.0000000000000351
[Indexed for MEDLINE]

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