Journal
BIOENGINEERING-BASEL
Volume 10, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/bioengineering10050539
Keywords
inner ear; cochlear implant; chinchilla; finite element; insertion angle
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This paper presents a finite element model of the chinchilla inner ear, which is used to study the relationship between the insertion angle of a cochlear implant electrode and the mechanical function. The application of this model found minimal loss of residual hearing due to insertion angle, indicating its reliability and usefulness in future cochlear implant design, surgical planning, and stimuli setup.
Cochlear implant (CI) surgery is one of the most utilized treatments for severe hearing loss. However, the effects of a successful scala tympani insertion on the mechanics of hearing are not yet fully understood. This paper presents a finite element (FE) model of the chinchilla inner ear for studying the interrelationship between the mechanical function and the insertion angle of a CI electrode. This FE model includes a three-chambered cochlea and full vestibular system, accomplished using mu-MRI and mu-CT scanning technologies. This model's first application found minimal loss of residual hearing due to insertion angle after CI surgery, and this indicates that it is a reliable and helpful tool for future applications in CI design, surgical planning, and stimuli setup.
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