FEM model of middle ear prosthesis with pseudo-elastic effect

Middle ear prosthesis

The Journal of the Acoustical Society of America ◽

10.1121/1.396073 ◽

1988 ◽

Vol 83 (2) ◽

pp. 846-846

Author(s):

Gerald E. Merwin ◽

Derek B. Spilman ◽

Larry L. Hench

Keyword(s):

Middle Ear ◽

Middle Ear Prosthesis

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Middle ear vibrations with SMA prosthesis. Experimental research

MATEC Web of Conferences ◽

10.1051/matecconf/201814812001 ◽

2018 ◽

Vol 148 ◽

pp. 12001

Author(s):

Rafal Rusinek ◽

Marcin Szymanski ◽

Grzegorz Teresinski

Keyword(s):

Transfer Function ◽

Shape Memory Alloy ◽

Shape Memory ◽

Temporal Bone ◽

Experimental Research ◽

Middle Ear ◽

Round Window ◽

Laser Doppler Vibrometer ◽

Laser Doppler ◽

Middle Ear Prosthesis

The paper focuses on experimental research of a middle ear prosthesis made of shape memory alloy. The prosthesis provides better adjustment to individual patient than classical prosthesis. The shape memory prosthesis is implemented to a fresh temporal bone and vibrations of the round window are recorded by means of the Laser Doppler Vibrometer. Finally, the results are presented in the form of transfer function and compared to the intact and damaged middle ear.

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LXXXVII Tantalum-Acrylic Middle Ear Prosthesis

Annals of Otology Rhinology & Laryngology ◽

10.1177/000348944805700410 ◽

1948 ◽

Vol 57 (4) ◽

pp. 1027-1031 ◽

Cited By ~ 1

Author(s):

Charles P. Lebo ◽

Amiel L. Palermo

Keyword(s):

Middle Ear ◽

Middle Ear Prosthesis

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Study on the Prosthesis Structural Design and Vibration Characteristics Based on the Conduction Effect of Human Middle Ear

Applied Bionics and Biomechanics ◽

10.1155/2020/4250265 ◽

2020 ◽

Vol 2020 ◽

pp. 1-7

Author(s):

Wu Ren ◽

Huijuan Yan ◽

Yi Yu ◽

Jinghong Ren ◽

Jinlong Chang ◽

...

Keyword(s):

Frequency Response ◽

Inner Ear ◽

Tympanic Membrane ◽

Middle Ear ◽

Transmission Function ◽

Ossicular Chain ◽

Sound Signal ◽

Sound Perception ◽

Response Characteristics ◽

Middle Ear Prosthesis

As a bridge from the sound signal in the air to the sound perception of the inner ear auditory receptor, the tympanic membrane and ossicular chain of the middle ear transform the sound signal in the outer ear through two gas-solid and solid-liquid conversions. In addition, through the lever principle formed by three auditory ossicle structure, the sound was concentrated and amplified to the inner ear. However, the sound transmission function of the middle ear will be decreased by disease, genetic, or trauma. Hence, using middle ear prosthesis to replace the damaged ossicles can restore the conduction function. The function realization of middle ear prosthesis depends on the vibration response of the prosthesis from the tympanic membrane to the stapes plate on the human auditory perception frequency, which is affected by the way the prosthesis combined with the tympanic membrane, the material, and the geometric shape. In this study, reasonable prosthetic structures had been designed for different types of ossicular chain injuries, and the frequency response characteristics were analyzed by the finite element method then. Moreover, in order to achieve better vibration frequency response, a ball structure was designed in the prosthesis to simulate its amplification function. The results showed that the middle ear prostheses constructed by different injury types can effectively transfer vibration energy. In particular, the first- and second-order resonant frequencies and response amplitudes are close to each other when ball structure models of different materials are added. Instead, the resonance frequency of the third stage formed by aluminum alloy ball materials is larger than that of the other two, which showed good response features.

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