Implantable Devices For A Retinal Prosthesis
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Implantable Devices For A Retinal Prosthesis Design And Electromagnetic And Thermal Effects
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Author :
language : en
Publisher:
Release Date : 2004
Implantable Devices For A Retinal Prosthesis Design And Electromagnetic And Thermal Effects written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
A retinal prosthesis, wherein electrical stimulation is provided to the retina of a person inflicted with outer retinal degenerative diseases such as Retinitis Pigmentosa and Age-related Macular degeneration, has been clinically tested and has succeeded in providing limited vision; such as shape recognition. It is hoped that an increased electrode count will improve visual acuity. The retinal prosthesis considered in this work is a dual-unit system with an external (outside the human body) unit and an internal (inside the body) unit with a wireless link for power and data transfer between them. Such a system poses possible health risks due to the incident electromagnetic energy of the wireless link and the power dissipated by the internal components, particularly the processing chip which drives the electrodes responsible for eliciting a neural response from the retina. Tissue damage via heating is one the primary concerns for such a system making it necessary to obtain via simulation and in-vivo and in-vitro experiments, accurate estimates of thermal elevation due to the operation of the such devices. In this work, numerical methods have been developed to compute temperature increases and electromagnetic effects due to the prosthesis components in anatomically correct human head models. The explicit and the Alternating-Direction Implicit (ADI) Finite-Difference Time-Domain (FDTD) have been used. Further, a hybrid explicit-ADI method was developed for the heat equation which provided simulation speedup of more than 10x over conventional methods for the models considered. FDTD methods were employed to compute the induced current densities and Specific Absorption Rate (SAR) in the human head due the inductive link comprising the primary coil (external) and a secondary coil (internal). Different orientations of the primary coil were considered in a frequency range of 1 MHz-20 MHz to provide guidelines for choosing eventual frequency and power parameters to conform to i.
Implantable Devices For A Retinal Prosthesis
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Author : Vinit Singh
language : en
Publisher:
Release Date : 2008
Implantable Devices For A Retinal Prosthesis written by Vinit Singh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Keywords: FDTD, Finite-Difference methods, Alternating Direction Implicit (ADI), biomedical implants.
Retinal Prosthesis
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Author : Mark S. Humayun
language : en
Publisher: Springer
Release Date : 2018-01-17
Retinal Prosthesis written by Mark S. Humayun and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-01-17 with Medical categories.
Intended as a useful and practical guide primarily oriented toward ophthalmic practitioners involved in retinal prosthesis implantation and post-operative visual rehabilitation, this book focuses on the Argus II Retinal Prosthesis and its revolutionary incorporation into the practice. The reader will get an update on patient selection, expected visual outcomes, surgical implantation techniques, and post-operative visual rehabilitation. Retinal Prosthesis - A Clinical Guide to Successful Implementation is written in a clear and concise manner and includes diagrams and high quality photographs to demonstrate best practices in surgical techniques and desired outcomes. Covering topics such as history of retinal prostheses, bioengineering considerations, clinical therapies, and other therapies and future directions, this book is written for practicing ophthalmologists, residents, and medical students interested in retinal implants.
Implantable Neural Prostheses 1
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Author : David Zhou
language : en
Publisher: Springer Science & Business Media
Release Date : 2009-06-10
Implantable Neural Prostheses 1 written by David Zhou and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-06-10 with Technology & Engineering categories.
Significant progress has been made in the development of neural prostheses to restore human functions and improve the quality of human life. Biomedical engineers and neuroscientists around the world are working to improve design and performance of existing devices and to develop novel devices for artificial vision, artificial limbs, and brain–machine interfaces. This book, Implantable Neural Prostheses 1: Devices and Applications,ispart one of a two-book series and describes state-of-the-art advances in techniques associated with implantable neural prosthetic devices and their applications. Devices covered include sensory prosthetic devices, such as visual implants, cochlear implants, auditory midbrain implants, and spinal cord stimulators. Motor prosthetic devices, such as deep brain stimulators, Bion microstimu- tors, the brain control and sensing interface, and cardiac electro-stimulation devices are also included. Progress in magnetic stimulation that may offer a non-invasive approach to prosthetic devices is introduced. Regulatory approval of implantable medical devices in the United States and Europe is also discussed.
Implantable Electronic Medical Devices
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Author : Dennis Fitzpatrick
language : en
Publisher: Elsevier
Release Date : 2014-11-05
Implantable Electronic Medical Devices written by Dennis Fitzpatrick and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-11-05 with Technology & Engineering categories.
Implantable Electronic Medical Devices provides a thorough review of the application of implantable devices, illustrating the techniques currently being used together with overviews of the latest commercially available medical devices. This book provides an overview of the design of medical devices and is a reference on existing medical devices. The book groups devices with similar functionality into distinct chapters, looking at the latest design ideas and techniques in each area, including retinal implants, glucose biosensors, cochlear implants, pacemakers, electrical stimulation therapy devices, and much more. Implantable Electronic Medical Devices equips the reader with essential background knowledge on the application of existing medical devices as well as providing an introduction to the latest techniques being used. A catalogue of existing implantable electronic medical devices Up-to-date information on the design of implantable electronic medical devices Background information and reviews on the application and design of up-to-date implantable electronic medical devices
Mechanical Design And Analysis Of Implantable Components For A Retinal Prosthesis
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Author : Joshua David Moss
language : en
Publisher:
Release Date : 1999
Mechanical Design And Analysis Of Implantable Components For A Retinal Prosthesis written by Joshua David Moss and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
Visual Prosthesis And Ophthalmic Devices
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Author : Joyce Tombran-Tink
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-12-08
Visual Prosthesis And Ophthalmic Devices written by Joyce Tombran-Tink and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-12-08 with Medical categories.
This volume details the latest technology in treating eye injuries and infections. It provides insight into the most up-to-date and established treatment options. The volume focuses on what can currently be achieved with a variety of ocular prostheses as well as what the future holds. Coverage reviews issues such as intraocular lens implants, biocompatibility of materials, retinal implants, testing models, and software designs.
High Density Microstimulators For Retinal Prosthesis
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Author : Mohanasankar Sivaprakasam
language : en
Publisher:
Release Date : 2006
High Density Microstimulators For Retinal Prosthesis written by Mohanasankar Sivaprakasam and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
Microfabrication Of An Implantable Silicone Microelectrode Array For An Epiretinal Prosthesis
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Author : Mariam Nader Maghribi
language : en
Publisher:
Release Date : 2003
Microfabrication Of An Implantable Silicone Microelectrode Array For An Epiretinal Prosthesis written by Mariam Nader Maghribi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Retinal Implant 26 Success Secrets 26 Most Asked Questions On Retinal Implant What You Need To Know
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Author : Tammy Forbes
language : en
Publisher: Emereo Publishing
Release Date : 2014-02
Retinal Implant 26 Success Secrets 26 Most Asked Questions On Retinal Implant What You Need To Know written by Tammy Forbes and has been published by Emereo Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-02 with Business & Economics categories.
A retinal implant is a Biomedical implant technics at the moment being elaborated by a numeral of undisclosed businesses and study establishments international. The implant is denoted to partly reinstate practical apparition to folks whoever have missed their apparition expected to degenerative eye states such like retinitis pigmentosa either macular deterioration. There has never been a Retinal implant Guide like this. It contains 26 answers, much more than you can imagine; comprehensive answers and extensive details and references, with insights that have never before been offered in print. Get the information you need--fast! This all-embracing guide offers a thorough view of key knowledge and detailed insight. This Guide introduces what you want to know about Retinal implant. A quick look inside of some of the subjects covered: Neurostimulation - Visual Prosthesis, Visual prosthetic - Photovoltaic Retinal Prosthesis, Retinal implant - Advantages, Neurostimulation - Stimulation Microelectrode Technologies, Retinal implant - Design Principles, Neurochip - Applications, Retinitis pigmentosa - Research, Retinal implant - Clinical Studies, Retinal implant - Types of Retinal Implants, Retinal implant - Candidates, Retinal implant - Spatial Resolution, Retinal implant - Disadvantages, Retinitis pigmentosa - Treatment, Foundation Fighting Blindness - Research and Clinical Trials, Argus Retinal Prosthesis - Design, Visual prosthesis - Photovoltaic Retinal Prosthesis, Cyborg - In medicine, Brain-computer interface - BCI versus neuroprosthetics, Visual prosthetic - Tuuml;bingen MPDA Project Alpha IMS, Retinal implant - History, and much more...