Parametric Modeling of Cochlear Electrode Arrays Using Design of Experiments and Finite Element Analysis (FEA).
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| Title: | Parametric Modeling of Cochlear Electrode Arrays Using Design of Experiments and Finite Element Analysis (FEA). |
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| Authors: | Alaboodi, Abdulaziz S.1 (AUTHOR), Alsamri, Jamal2 (AUTHOR) jmalsamri@pnu.edu.sa, Gurumallesh Prabu, Poorani (AUTHOR) pgurumalle@wiley.com |
| Source: | Applied Bionics & Biomechanics. 6/22/2026, Vol. 2026, p1-12. 12p. |
| Subjects: | Parametric modeling, Finite element method, Artificial implants, Biomechanics, Experimental design, Cochlear implants, Mechanical behavior of materials |
| Abstract: | Cochlear implant (CI) electrode arrays must navigate the delicate, spiraling microanatomy of the human cochlea. Optimizing their intrinsic mechanical properties is crucial for ensuring smooth surgical insertion and preventing extracochlear buckling. This study presents a parametric, bench‐type biomechanical evaluation of tapered cochlear electrode arrays, combining three‐dimensional (3D) finite element analysis (FEA) with a design of experiments (DOE) methodology. The array was modeled as a heterogeneous composite, comprising platinum‐iridium (Pt‐Ir) conductors embedded in a polydimethylsiloxane (PDMS) (silicone) matrix and evaluated as a free‐space cantilever under simulated surgical deflection conditions of up to 30°. This approach isolates the intrinsic bending stiffness and longitudinal column strength independent of complex tribological friction. A 15‐run factorial design varying apical radius, basal radius, and array length was utilized to quantify their interactive effects on tip deflection and reaction force. The FEA results demonstrated that across the parametric sweeps, maximum tip deflection ranged from 6.16 to 8.27 mm, while the reaction force varied between 1.096 and 4.66 mN. Peak Von Mises stress localized at the fixed basal end at 205.86 MPa, operating safely within the elastic limit of the composite's alloy. Analysis of variance (ANOVA) revealed that array length is the dominant driver of tip deflection, whereas the basal radius governs reaction force due to its fourth‐power scaling of the area moment of inertia. Predictive regression models achieved adjusted R‐squared values approaching unity; as the experimental runs are derived from deterministic FEA simulations rather than stochastic physical trials, this near‐perfect fit reflects exact mathematical mapping of the response surface rather than real‐world physical variance. To validate this deterministic numerical framework, the outputs were successfully correlated against previously published experimental data using optical fibers as structural proxies under precision force measurement. Ultimately, these findings provide an efficient, predictive parametric design framework for benchmarking and comparing tapered electrode array geometries, utilizing flexural rigidity and reaction forces as fundamental proxies for safe surgical handling and structural trackability. [ABSTRACT FROM AUTHOR] |
| Copyright of Applied Bionics & Biomechanics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 194752989 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Parametric Modeling of Cochlear Electrode Arrays Using Design of Experiments and Finite Element Analysis (FEA). – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Alaboodi%2C+Abdulaziz+S%2E%22">Alaboodi, Abdulaziz S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Alsamri%2C+Jamal%22">Alsamri, Jamal</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> jmalsamri@pnu.edu.sa</i><br /><searchLink fieldCode="AR" term="%22Gurumallesh+Prabu%2C+Poorani%22">Gurumallesh Prabu, Poorani</searchLink> (AUTHOR)<i> pgurumalle@wiley.com</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Applied+Bionics+%26+Biomechanics%22">Applied Bionics & Biomechanics</searchLink>. 6/22/2026, Vol. 2026, p1-12. 12p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Parametric+modeling%22">Parametric modeling</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Artificial+implants%22">Artificial implants</searchLink><br /><searchLink fieldCode="DE" term="%22Biomechanics%22">Biomechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Experimental+design%22">Experimental design</searchLink><br /><searchLink fieldCode="DE" term="%22Cochlear+implants%22">Cochlear implants</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Cochlear implant (CI) electrode arrays must navigate the delicate, spiraling microanatomy of the human cochlea. Optimizing their intrinsic mechanical properties is crucial for ensuring smooth surgical insertion and preventing extracochlear buckling. This study presents a parametric, bench‐type biomechanical evaluation of tapered cochlear electrode arrays, combining three‐dimensional (3D) finite element analysis (FEA) with a design of experiments (DOE) methodology. The array was modeled as a heterogeneous composite, comprising platinum‐iridium (Pt‐Ir) conductors embedded in a polydimethylsiloxane (PDMS) (silicone) matrix and evaluated as a free‐space cantilever under simulated surgical deflection conditions of up to 30°. This approach isolates the intrinsic bending stiffness and longitudinal column strength independent of complex tribological friction. A 15‐run factorial design varying apical radius, basal radius, and array length was utilized to quantify their interactive effects on tip deflection and reaction force. The FEA results demonstrated that across the parametric sweeps, maximum tip deflection ranged from 6.16 to 8.27 mm, while the reaction force varied between 1.096 and 4.66 mN. Peak Von Mises stress localized at the fixed basal end at 205.86 MPa, operating safely within the elastic limit of the composite's alloy. Analysis of variance (ANOVA) revealed that array length is the dominant driver of tip deflection, whereas the basal radius governs reaction force due to its fourth‐power scaling of the area moment of inertia. Predictive regression models achieved adjusted R‐squared values approaching unity; as the experimental runs are derived from deterministic FEA simulations rather than stochastic physical trials, this near‐perfect fit reflects exact mathematical mapping of the response surface rather than real‐world physical variance. To validate this deterministic numerical framework, the outputs were successfully correlated against previously published experimental data using optical fibers as structural proxies under precision force measurement. Ultimately, these findings provide an efficient, predictive parametric design framework for benchmarking and comparing tapered electrode array geometries, utilizing flexural rigidity and reaction forces as fundamental proxies for safe surgical handling and structural trackability. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Applied Bionics & Biomechanics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1155/abb/6620284 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 1 Subjects: – SubjectFull: Parametric modeling Type: general – SubjectFull: Finite element method Type: general – SubjectFull: Artificial implants Type: general – SubjectFull: Biomechanics Type: general – SubjectFull: Experimental design Type: general – SubjectFull: Cochlear implants Type: general – SubjectFull: Mechanical behavior of materials Type: general Titles: – TitleFull: Parametric Modeling of Cochlear Electrode Arrays Using Design of Experiments and Finite Element Analysis (FEA). Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Alaboodi, Abdulaziz S. – PersonEntity: Name: NameFull: Alsamri, Jamal – PersonEntity: Name: NameFull: Gurumallesh Prabu, Poorani IsPartOfRelationships: – BibEntity: Dates: – D: 22 M: 06 Text: 6/22/2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 11762322 Numbering: – Type: volume Value: 2026 Titles: – TitleFull: Applied Bionics & Biomechanics Type: main |
| ResultId | 1 |
