Abstract
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.
Highlights
The human middle ear forms a sound conduction system that transmits sound from the external ear to the fluids of the inner ear through three ossicles: the malleus, the incus, and the stapes
The human temporal bone and the shape memory prosthesis (SMP) have been prepared as it is described in sections 2.1 and 2.2
The middle ear is stimulated by sound in the range of 0.2 to 8 kHz and motion of round window (RW) has been recorded in the following cases:
Summary
The human middle ear forms a sound conduction system that transmits sound from the external ear to the fluids of the inner ear through three ossicles: the malleus, the incus, and the stapes. For patients with middle ear dysfunctions, the medical practice called ossiculoplasty (reconstruction of the middle ear ossicles) can improve the hearing process. This technique has been used in clinical practice for over 50 years. The classical TORP (Total Ossicular Replacement Prosthesis) and PORP (Partial Ossicular Replacement Prosthesis) are made of various materials with titanium or titanium alloy being most frequently used. They connect the tympanic membrane or the malleus to the stapes head or stapes footplate. Pure tone audiograms have been performed after surgery reconstruction made by classical titanium
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