A polymer cochlear electrode array : atraumatic deep insertion, tripolar stimulation, and long-term reliability / Tae Mok Gwon.
Gwon, Tae Mok, author.
2018
RF305
Available Online

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Title A polymer cochlear electrode array : atraumatic deep insertion, tripolar stimulation, and long-term reliability / Tae Mok Gwon.
Author Gwon, Tae Mok, author.
ISBN 9789811304729 (electronic book)
9811304726 (electronic book)
9789811304712
9811304718
DOI https://doi.org/10.1007/978-981-13-0472-9
Published Singapore : Springer, 2018.
Language English
Description 1 online resource (xxv, 88 pages) : illustrations.
Item Number 10.1007/978-981-13-0472-9 doi
Call Number RF305
Dewey Decimal Classification 617.8/8220592
Summary This book describes the design, fabrication and evaluation of a polymer-based neural interface for a cochlear electrode array, reviewed in terms of fabrication process, functionality, and reliability. Polymer-based devices have attracted attention in the neural prosthetic field due to their flexibility and compatibility with micro-fabrication process. A liquid crystal polymer (LCP) is an inert, highly water-resistant polymer suitable for the encapsulation of electronic components and as a substrate material for fabricating neural interfaces. The author has designed, fabricated, and evaluated an LCP-based cochlear electrode array for an improved polymer-based cochlear implant. The thesis deals with 3 key topics: atraumatic deep insertion, tripolar stimulation, and long-term reliability. Atraumatic insertion of the intracochlear electrode and resulting preservation of residual hearing have become essential in state–of-the-art cochlear implantation. A novel tapered design of an LCP-based cochlear electrode array is presented to meet such goals. For high-density and pitch-recognizable cochlear implant, channel interaction should be avoided. Local tripolar stimulation using multi-layered electrode sites are shown to achieve highly focused electrical stimulation. This thesis addresses another vital issue in the polymer-based neural implants: the long-term reliability issue. After suggesting a new method of forming mechanical interlocking to improve polymer-metal adhesion, the author performs accelerating aging tests to verify the method’s efficacy. The aforementioned three topics have been thoroughly examined through various in vitro and in vivo studies. Verification foresees the development of LCP-based cochlear electrode array for an atraumatic deep insertion, advanced stimulation, and long-term clinical implant.
Note "Doctoral thesis accepted by Seoul National University for the Degree of Doctor of Philosophy in the Faculty of Electrical and Computer Engineering, Seoul, Korea (Republic of)."
Bibliography, etc. Note Includes bibliographical references.
Access Note Access limited to authorized users.
Digital File Characteristics text file PDF
Source of Description Online resource; title from PDF title page (SpringerLink, viewed May 29, 2018).
Series Springer theses.
Available in Other Form Print version: 9789811304712
Linked Resources Online Access
Record Appears in Online Resources > Ebooks
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Abstract
Contents
List of Figures
List of Tables
List of Abbreviations
Chapter 1 Introduction
1.1 Overview of Neural Prostheses and Cochlear Implants
1.2 Review of Cochlear Electrode Arrays
1.3 Proposed Polymer Cochlear Electrode Array
1.4 Long-Term Reliability of Polymer-Based Neural Prostheses
1.5 Objectives of the Dissertation
Chapter 2 Materials and Methods
2.1 Liquid Crystal Polymer (LCP)
2.2 Cochlear Electrode Array for Atraumatic Deep Insertion
2.3 Polymer Electrode Array for Tripolar Stimulation
2.4 Long-Term Reliability Analysis of LCP-Based Neural Implants
Chapter 3 Results
3.1 LCP-Based Cochlear Electrode Array for Atraumatic Deep Insertion
3.2 Polymer Electrode Array for Tripolar Stimulation
3.3 Long-Term Device Reliability
Method
Chapter 4 Discussion
4.1 LCP-Based Cochlear Electrode Arraysfor Atraumatic Deep Insertion
4.2 Power Consumption and Stimulation Threshold of Tripolar Stimulation
4.3 Technical Strategies to Improve Device Reliability
4.4 Review of Long-Term Reliability of LCP-Based Devices
Chapter 5 Conclusion
References.

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