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| Title: | DESIGN CONSIDERATIONS FOR LENGTH VARIABLE PROSTHESES FINITE ELEMENT MODEL SIMULATIONS | |
| DOI No: | 10.1142/9789812703019_0022 | |
| Source: | MIDDLE EAR MECHANICS IN RESEARCH AND OTOLOGY (pp 153-160) | |
| Author(s): | MATTHIAS BORNITZ
University Hospital Dresden, Dept. of Otorhinolaryngology, Fetscherstr. 74, D-01307 Dresden, Germany THOMAS ZAHNERT University Hospital Dresden, Dept. of Otorhinolaryngology, Fetscherstr. 74, D-01307 Dresden, Germany KARL-BERND HÜTTENBRINK University Hospital Dresden, Dept. of Otorhinolaryngology, Fetscherstr. 74, D-01307 Dresden, Germany HANS-JÜRGEN HARDTKE Dresden University of Technology, Dept. of Solid State Mechanics, D-01062 Dresden, Germany |
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| Abstract: | We often see poor sound transfer characteristics after ossicular chain reconstruction with prostheses. Large static displacements of the remaining middle ear structures lead to tension in the ligaments or dislocation of the prosthesis. The ideal solution is a prosthesis with automatic length adjustment. We did numerical simulations with prostheses with spring, friction, damping and buckling elements and our Finite Element model of the middle ear. The best sound transfer characteristic and length variability was achieved with a prosthesis with a damping element and a small spring. | |
| Full Text: | View full text in PDF format (386KB) | |
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