Linked Life Data

20005939

Source:http://linkedlifedata.com/resource/pubmed/id/20005939

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
2010-5-10
pubmed:abstractText
The round window placement of a floating mass transducer (FMT) is a new approach for coupling an implantable hearing system to the cochlea. We evaluated the vibration transfer to the cochlear fluids of an FMT placed at the round window (rwFMT) with special attention to the role of bone conduction. A posterior tympanotomy was performed on eleven ears of seven human whole head specimens. Several rwFMT setups were examined using laser Doppler vibrometry measurements at the stapes and the promontory. In three ears, the vibrations of a bone anchored hearing aid (BAHA) and an FMT fixed to the promontory (pFMT) were compared to explore the role of bone conduction. Vibration transmission to the measuring point at the stapes was best when the rwFMT was perpendicularly placed in the round window and underlayed with connective tissue. Fixation of the rwFMT to the round window exhibited significantly lower vibration transmission. Although measurable, bone conduction from the pFMT was much lower than that of the BAHA. Our results suggest that the rwFMT does not act as a small bone anchored hearing aid, but instead, acts as a direct vibratory stimulator of the round window membrane.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
1878-5891
pubmed:author
pubmed:copyrightInfo
Copyright (c) 2009 Elsevier B.V. All rights reserved.
pubmed:issnType
Electronic
pubmed:volume
263
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
120-7
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
The floating mass transducer at the round window: direct transmission or bone conduction?
pubmed:affiliation
University Department of ENT, Head and Neck Surgery, Inselspital, University of Bern, Switzerland. andreas.arnold@insel.ch
pubmed:publicationType
Journal Article, In Vitro, Research Support, Non-U.S. Gov't, Evaluation Studies