The University of Dublin | Trinity College -- Ollscoil Átha Cliath | Coláiste na Tríonóide
Trinity's Access to Research Archive
Home :: Log In :: Submit :: Alerts ::

TARA >
School of Engineering >
Mechanical & Manufacturing Eng >
Mechanical & Manufacturing Eng (Scholarly Publications) >

Please use this identifier to cite or link to this item: http://hdl.handle.net/2262/29106

Title: The effect of prosthesis design on vibration of the reconstructed ossicular chain: a comparative finite element analysis of four prostheses
Author: KELLY, DANIEL
PRENDERGAST, PATRICK JOHN
Sponsor: Health Research Board
Author's Homepage: http://people.tcd.ie/kellyd9
Keywords: Mechanical & Manufacturing Engineering
Issue Date: 2003
Publisher: Wolters Kluwer
Citation: Kelly, D. J.; Prendergast, P. J. and Blayney, A. W. ‘The effect of prosthesis design on vibration of the reconstructed ossicular chain: a comparative finite element analysis of four prostheses’ in Otology and Neurotology, 24, (1), 2003, pp 11-19
Series/Report no.: Otology & Neurotology: Official Publication Of The American Otological Society, American Neurotology Society [And] European Academy Of Otology And Neurotology
24
1
Abstract: Hypothesis: We hypothesize that the differences in the bioacoustic performance of ossicular replacement prosthesis designs, and insertion positions, can be quantified using finite element analysis. Background: Many designs of prosthesis are available for middle ear surgery. Materials used, and the shape of the implants, differ widely. Advances in computer simulation technologies offer the possibility of replicating the in vivo behavior of the different prostheses. If this can be achieved, insight into the design attributes required for improved biofunctionality may be determined. Methods: Micro CT scanning and NMR imaging were used to obtain geometric information that was translated into a finite element model of the outer and middle ear. The forced frequency response across the hearing range of the normal middle ear was compared to the middle ear reconstructed with partial and total ossicular replacement prostheses (Xomed, Jacksonville, FL and Kurz, Dusslingen Germany). Results: The amplitude of vibration of the footplate was more similar to the normal ear when a Kurz TORP was implanted compared to when a Xomed TORP was implanted; this may be attributed to the latter’s titanium link. PORP prostheses were stiffest and had lower umbo vibrations and higher stapedial footplate vibrations. In all cases bar one the vibration of the prostheses had resonances that caused the vibration of the stapes footplate to be noticeably different from normal. Conclusion: We confirmed the hypothesis that finite element modelling can be used to predict the differences in the response of ossicular replacement prostheses. This study shows that computer simulation can potentially be used to test or optimize the vibro-acoustic characteristics of middle ear implants.
Description: PUBLISHED
URI: http://hdl.handle.net/2262/29106
Appears in Collections:Mechanical & Manufacturing Eng (Scholarly Publications)

Files in This Item:

File Description SizeFormat
Kelly - 2003 - Otol Neuro.pdfpublished (author copy) peer-reviewed600.09 kBAdobe PDFView/Open


This item is protected by original copyright


Please note: There is a known bug in some browsers that causes an error when a user tries to view large pdf file within the browser window. If you receive the message "The file is damaged and could not be repaired", please try one of the solutions linked below based on the browser you are using.

Items in TARA are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback