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Testing a Method for Quantifying the Output of Implantable Middle Ear Hearing Devices

Authors
  • Rosowski, J.J.
  • Chien, W.
  • Ravicz, M.E.
  • Merchant, S.N.
Type
Published Article
Journal
Audiology and Neurotology
Publisher
S. Karger AG
Publication Date
Apr 02, 2007
Volume
12
Issue
4
Pages
265–276
Identifiers
DOI: 10.1159/000101474
PMID: 17406105
PMCID: PMC2596735
Source
Karger
Keywords
License
Green
External links

Abstract

This report describes tests of a standard practice for quantifying the performance of implantable middle ear hearing devices (also known as implantable hearing aids). The standard and these tests were initiated by the Food and Drug Administration of the United States Government. The tests involved measurements on two hearing devices, one commercially available and the other home built, that were implanted into ears removed from human cadavers. The tests were conducted to investigate the utility of the practice and its outcome measures: the equivalent ear canal sound pressure transfer function that relates electrically driven middle ear velocities to the equivalent sound pressure needed to produce those velocities, and the maximum effective ear canal sound pressure. The practice calls for measurements in cadaveric ears in order to account for the varied anatomy and function of different human middle ears.

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