Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
Telecommunications and Radio Engineering
SJR: 0.203 SNIP: 0.44 CiteScore™: 1

ISSN Print: 0040-2508
ISSN Online: 1943-6009

Volume 79, 2020 Volume 78, 2019 Volume 77, 2018 Volume 76, 2017 Volume 75, 2016 Volume 74, 2015 Volume 73, 2014 Volume 72, 2013 Volume 71, 2012 Volume 70, 2011 Volume 69, 2010 Volume 68, 2009 Volume 67, 2008 Volume 66, 2007 Volume 65, 2006 Volume 64, 2005 Volume 63, 2005 Volume 62, 2004 Volume 61, 2004 Volume 60, 2003 Volume 59, 2003 Volume 58, 2002 Volume 57, 2002 Volume 56, 2001 Volume 55, 2001 Volume 54, 2000 Volume 53, 1999 Volume 52, 1998 Volume 51, 1997

Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v64.i12.70
pages 1047-1056

A Biocompatible PMMA Encapsulated Vision Prosthesis Case for Silicon Retina

Alejandra Alcala D
National Polytechnic Institute of Mexico
Miguel Cruz Irisson
National Polytechnic Institute of Mexico
Volodymyr Ponomaryov
Instituto Politécnico Nacional, Mexico-city, Mexico


Development silicon retinal prosthesis that provides useful vision and also be tolerated by the eye for a long time is steel a big challenge. The sub or epiretinal implant (EI) prosthesis is based upon two guiding principles: the first one looks for reducing the electronics complexity to be implanted within an interlobular platform and the second one must avoid disruption of the normal anatomy of the eye. Those two major consideration have produced artificial retinal design systems based on mounting ocular camera systems outside the aye which transmits to the retinal implant the processing video signal and the power required for its adequate functionality.
In these work we present an alternative prosthesis case which goes against the above principle. The proposed prosthesis case in these work contains the ccd camera, the power battery and the signal processing system inside a PMMA (Polymetyl metacrilate) case which is inserted inside the ocular globe. The PMMA prosthesis case proposed seems to be a solution to the problems presented by the outside camera when transmitting to the (EI), like both the accurately needs to direct vision signals to the implanted electronics artificial retina, avoids noise interference, and solves the scanning problems presented with the outside camera.
The proposed prosthesis case has been implanted in rabbits with excellent biocompatibility results after eight months from the implant, we have clinical evidences the prosthesis could be tolerated by the rabbit eye for long periods of time. The proposal discusses the complexity electronics frontiers, heat dissipation and power requirements for the proposed prosthesis. The surgical procedures in the prosthesis implant and results are discussed.

Articles with similar content:

Micro Energy - Crossroad between thermal engineering and MEMS technology
Yuji Suzuki
Tibial Shaft Fracture after Removal of an ACE Tibial Nail
Journal of Long-Term Effects of Medical Implants, Vol.21, 2011, issue 3
loannis Sourlas, Stergios N. Lallos, Nikolaos E. Efstathopoulos, Michalis Papadakis, Emmanuel Brilakis
Improving the Accuracy of Acetabular Cup Implantation Using a Bulls-Eye Spirit Level
Journal of Long-Term Effects of Medical Implants, Vol.21, 2011, issue 3
R. Dominic Meek , Duncan Macdonald, Sanjeev Patil, Aslam Mohammed, Sanjay Gupta, Nicholas E. Ohly
The Evolution of Neuroprosthetic Interfaces
Critical Reviews™ in Biomedical Engineering, Vol.44, 2016, issue 1-2
Mijail D. Serruya, D. Kacy Cullen, Dayo O. Adewole, H. Isaac Chen, Justin C. Burrell, James P. Harris, Dmitriy Petrov, John A. Wolf
Genomics, Ethical Issues, and the Practice of Dentistry
Ethics in Biology, Engineering and Medicine: An International Journal, Vol.5, 2014, issue 4
Anthony T. Vernillo, Alexander J. Schloss