Finite element modelling of the surgical procedure for placement of a straight electrode array: Mechanical and clinical consequences

Areias, Bruno; Parente, Marco; Gentil, Fernanda; Jorge, R.M. Natal

doi:10.1016/j.jbiomech.2021.110812

Cited by 5 publications

(7 citation statements)

References 28 publications

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“…Studies have shown that the planar electrode has the highest stimulation efficiency among the other electrodes (98). Some researchers have also studied the position of the electrode (99). Electrode placement includes the modiolar, midscala, and lateral positions, which correspond to electrodes on the market, such as pre-curved modiolar hugging, midscala, and straight lateral wall electrode arrays.…”

Section: Models For the CImentioning

confidence: 99%

Design and optimization of auditory prostheses using the finite element method: a narrative review

Cheng¹,

Han

Liu

et al. 2022

Ann Transl Med

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Background and Objective: An auditory prosthesis refers to a device designed to restore hearing. Some parameters of the auditory prosthesis, such as mass, implanted position, and degree, need to be repeatedly designed and optimized based on the realistic geometry of the ear. Numerous auditory prostheses designs were based on animal or specimen experiments involving many complex instruments, and the experimental specimens had low repeatability. The finite element method (FEM) can overcome these disadvantages and be carried out on the computer with substantial flexibility in modifying the prosthetic parameters to optimize them. This narrative review aims to analyze the recent advances in the design and optimization of auditory prostheses using the FEM and provides suggestions for future development. Methods:The literature on the design of auditory prostheses using the FEM has been extensively studied using the PubMed and Web of Science databases, including different ear models and relevant parameters of different auditory prostheses that need to be designed and optimized.

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Section: Models For the CImentioning

confidence: 99%

Design and optimization of auditory prostheses using the finite element method: a narrative review

Cheng¹,

Han

Liu

et al. 2022

Ann Transl Med

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“…A previously developed finite element model that focused on residual hearing found that cochlear implants most dramatically affect the residual hearing at extreme frequencies of human hearing [20]. This model provided a good first step towards further FE analysis of residual hearing after CI surgery, although it did not necessarily agree with the results of other models where residual hearing was found to be less affected by the simple presence of a CI electrode and more affected by the trauma caused during insertion [19,21]. However, the previous models did not examine the effect of varying cochlear electrode insertion angles between patients.…”

Section: Prior Fe Modelsmentioning

confidence: 95%

“…Specifically, finite element (FE) modeling allows the intricacies of the inner ear's mechanics to be reduced to simpler phenomena that can be verified with clinical results. One such model found that material, geometric design, insertion speed, and friction coefficients were the greatest factors influencing residual hearing preservation [19]. A previously developed finite element model that focused on residual hearing found that cochlear implants most dramatically affect the residual hearing at extreme frequencies of human hearing [20].…”

Section: Prior Fe Modelsmentioning

confidence: 99%

Finite Element Modeling of Residual Hearing after Cochlear Implant Surgery in Chinchillas

et al. 2023

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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 µ-MRI and µ-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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“…For cochleae, there have been examples of organoid cultures [84] and decellularised tissues [100] for cochlear tissue engineering although more extensive studies of producing replacement tissues have been discussed for the middle and outer ear [3,5,22]. Lastly, computational models are increasingly being used to study the electrical and mechanical properties of the cochlea and the effects of CIs on the auditory system [7,14,110,118]. These models can be used to replicate the complex biological environment of the cochlea in a more controlled and reproducible manner and one that can be easily modified to study specific parameters.…”

Section: Reproduction Of Cochleaementioning

confidence: 99%

“…The extensive work in the mathematical and computational modelling of the basilar membrane micromechanics that underlie the mechanism of acoustic hearing is reviewed by Ni and colleagues [110]. Finally, mechanical models can provide insight into the insertion forces during cochlear implantation, which can lead to significant trauma and inflammatory response, damaging residual hearing [7].…”

Section: Computational Modelsmentioning

confidence: 99%

Models of Cochlea Used in Cochlear Implant Research: A Review

et al. 2023

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As the first clinically translated machine-neural interface, cochlear implants (CI) have demonstrated much success in providing hearing to those with severe to profound hearing loss. Despite their clinical effectiveness, key drawbacks such as hearing damage, partly from insertion forces that arise during implantation, and current spread, which limits focussing ability, prevent wider CI eligibility. In this review, we provide an overview of the anatomical and physical properties of the cochlea as a resource to aid the development of accurate models to improve future CI treatments. We highlight the advancements in the development of various physical, animal, tissue engineering, and computational models of the cochlea and the need for such models, challenges in their use, and a perspective on their future directions.

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Finite element modelling of the surgical procedure for placement of a straight electrode array: Mechanical and clinical consequences

Cited by 5 publications

References 28 publications

Design and optimization of auditory prostheses using the finite element method: a narrative review

Design and optimization of auditory prostheses using the finite element method: a narrative review

Finite Element Modeling of Residual Hearing after Cochlear Implant Surgery in Chinchillas

Models of Cochlea Used in Cochlear Implant Research: A Review

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