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Analysis of Tissue Variability and Adaptive Transcutaneous Power

Bocan, Kara (2017) Analysis of Tissue Variability and Adaptive Transcutaneous Power. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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Abstract

Implantable medical devices comprise a large and growing market, providing both short- and long-term treatment for a variety of medical conditions. This includes continuous therapy devices such as pacemakers and ventricular assist devices, and prostheses such as cochlear implants and retinal prosthesis. Wireless powering enables fully implantable devices that are less limited in size and lifetime by non-rechargeable battery power. Wireless energy transfer also enables communication with the implanted device, allowing monitoring and providing programmability. However, wireless transcutaneous energy transfer is complicated by unpredictability and variability of biological tissue. The overall goal of the proposed work is to model and study tissue variability and its effects on power transfer and absorption in tissue. First, we will examine power transfer mechanisms in tissue with varying dielectric properties, and the associated behavior of different antenna topologies transmitting through tissue. Then, we will examine the effects of tissue variability on optimal frequency for power transfer through tissue, balancing power delivery and tissue absorption. The next focus will be on developing and evaluating tissue phantoms to model variable properties. Finally, we will propose strategies for adapting a passive implantable device in response to variations in the tissue environment.


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Details

Item Type: University of Pittsburgh ETD
Status: Unpublished
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Bocan, Karaknb12@pitt.eduknb12
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairSejdic, Ervinesejdic@pitt.edu
Committee MemberJacobs, Steven
Committee MemberMao, Zhi-Hong
Committee MemberStanchina, William
Committee MemberSun, Mingui
Date: 26 September 2017
Date Type: Publication
Defense Date: 6 July 2017
Approval Date: 26 September 2017
Submission Date: 10 July 2017
Access Restriction: 5 year -- Restrict access to University of Pittsburgh for a period of 5 years.
Number of Pages: 180
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Electrical Engineering
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: dielectric properties, electromagnetics, tissue variability, transcutaneous power transfer, wireless implantable medical devices
Date Deposited: 26 Sep 2017 20:19
Last Modified: 26 Sep 2017 20:19
URI: http://d-scholarship.pitt.edu/id/eprint/32734

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