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Inicio Acta Otorrinolaringológica Española Design and Experimental Analysis of a New Malleovestibulopexy Prosthesis Using a...
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Vol. 66. Issue 1.
Pages 16-27 (January - February 2015)
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Vol. 66. Issue 1.
Pages 16-27 (January - February 2015)
Original article
Design and Experimental Analysis of a New Malleovestibulopexy Prosthesis Using a Finite Element Model of the Human Middle Ear
Nueva prótesis de maleovestibulopexia. Diseño y análisis experimental en un modelo computarizado 3D basado en elementos finitos
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Luis A. Vallejo Valdezatea,b,c,
Corresponding author
, Antonio Hidalgo Otamendid,e, Alberto Hernándezd,e, Fernando Lobod, Elisa Gil-Carcedo Sañudoa,b, Luis M. Gil-Carcedo Garcíaa,b,c
a Cátedra de Cirugía, Oftalmología, Otorrinolaringología y Fisioterapia, Universidad de Valladolid, Valladolid, Spain
b Servicio de Otorrinolaringología, Hospital Universitario del Río Hortega, Valladolid, Spain
c Instituto de Neurociencias de Castilla y León (INCyL), Valladolid, Spain
d Centro para la Investigación y el Desarrollo en Automoción (CIDAUT), Valladolid, Spain
e Centro para el Estudio y Control del Ruido (CECOR), Valladolid, Spain
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Tables (3)
Table 1. Characteristics and Mechanical Properties Used for Designing the Different Elements That Make up the Model of the Ear Using the Finite Elements Method.
Table 2. Physical Characteristics of Various Materials Considered for Prosthesis Manufacture.
Table 3. Mechanical Properties of Titanium.
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Abstract
Introduction and objective

Many designs of prostheses are available for middle ear surgery. In this study, we propose a design for a new prosthesis, which optimises mechanical performance in the human middle ear and improves some deficiencies in the prostheses currently available.

Our objective was to design and assess the theoretical acoustic–mechanical behaviour of this new total ossicular replacement prosthesis.

Methods

The design of this new prosthesis was based on an animal model (an iguana). For the modelling and mechanical analysis of the new prosthesis, we used a dynamic 3D computer model of the human middle ear, based on the finite elements method (FEM).

Results

The new malleovestibulopexy prosthesis design demonstrates an acoustical–mechanical performance similar to that of the healthy human middle ear. This new design also has additional advantages, such as ease of implantation and stability in the middle ear.

Conclusions

This study shows that computer simulation can be used to design and optimise the vibroacoustic characteristics of middle ear implants and demonstrates the effectiveness of a new malleovestibulopexy prosthesis in reconstructing the ossicular chain.

Keywords:
Middle ear mechanics
Finite elements method
Middle ear prosthesis
Ossiculoplasty
Malleovestibulopexy
Total ossicular replacement prosthesis
Resumen
Introducción

Existen numerosas prótesis diseñadas con el fin de sustituir elementos osiculares en el oído medio. En este trabajo presentamos el diseño de una nueva prótesis de sustitución osicular total anclada en el mango del martillo y analizamos su comportamiento mecanoacústico teórico.

Métodos

Para el diseño de la prótesis hemos utilizado el método de los elementos finitos (FEM) basándonos en un modelo computarizado 3D dinámico del oído medio humano, analizando su comportamiento mecánico.

Resultados

La prótesis resultante presenta un comportamiento mecanoacústico teórico superponible al del oído humano sano. Posee, además, otras ventajas biológicas como son estabilidad y la facilidad de implantación.

Conclusiones

La simulación computarizada puede ser utilizada para diseñar y optimizar las características vibroacústicas de prótesis implantables en el oído medio. Mostramos la eficiencia mecanoacústica de un nuevo diseño de prótesis de maleovestibulopexia útil en la reconstrucción de la cadena osicular.

Palabras clave:
Mecánica del oído medio
Método de los elementos finitos
Prótesis de oído medio
Osiculoplastia
Maleovestibulopexia
Prótesis de sustitución osicular total

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