access_facet Electronic Resources
author_facet Rizzo, Joseph F.
Shire, Douglas B.
Kelly, Shawn K.
Troyk, Phil
Gingerich, Marcus
McKee, Bruce
Priplata, Attila
Chen, Jinghua
Drohan, William
Doyle, Patrick
Mendoza, Oscar
Theogarajan, Luke
Cogan, Stuart
Wyatt, John L.
Rizzo, Joseph F.
Shire, Douglas B.
Kelly, Shawn K.
Troyk, Phil
Gingerich, Marcus
McKee, Bruce
Priplata, Attila
Chen, Jinghua
Drohan, William
Doyle, Patrick
Mendoza, Oscar
Theogarajan, Luke
Cogan, Stuart
Wyatt, John L.
author Rizzo, Joseph F.
Shire, Douglas B.
Kelly, Shawn K.
Troyk, Phil
Gingerich, Marcus
McKee, Bruce
Priplata, Attila
Chen, Jinghua
Drohan, William
Doyle, Patrick
Mendoza, Oscar
Theogarajan, Luke
Cogan, Stuart
Wyatt, John L.
spellingShingle Rizzo, Joseph F.
Shire, Douglas B.
Kelly, Shawn K.
Troyk, Phil
Gingerich, Marcus
McKee, Bruce
Priplata, Attila
Chen, Jinghua
Drohan, William
Doyle, Patrick
Mendoza, Oscar
Theogarajan, Luke
Cogan, Stuart
Wyatt, John L.
2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Overview of the boston retinal prosthesis: Challenges and opportunities to restore useful vision to the blind
Retina
Electrodes
Coils
Implants
Arrays
Prosthetics
Surgery
author_sort rizzo, joseph f.
spelling Rizzo, Joseph F. Shire, Douglas B. Kelly, Shawn K. Troyk, Phil Gingerich, Marcus McKee, Bruce Priplata, Attila Chen, Jinghua Drohan, William Doyle, Patrick Mendoza, Oscar Theogarajan, Luke Cogan, Stuart Wyatt, John L. 1557-170X 978-1-4577-1589-1 978-1-4244-4121-1 978-1-4244-4122-8 1557-170X IEEE Retina Electrodes Coils Implants Arrays Prosthetics Surgery http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=6093610 http://doi.org/10.1109/IEMBS.2011.6093610 A small, hermetic, wirelessly-controlled retinal prosthesis was developed for pre-clinical studies in Yucatan mini-pigs. The device was implanted on the outside of the eye in the orbit, and it received both power and data wirelessly from external sources. The prosthesis drove a sub-retinal thin-film array of sputtered iridium oxide stimulating electrodes. The implanted device included a hermetic titanium case containing the 16-channel stimulator chip and discrete circuit components. Feedthroughs in the hermetic case connected the chip to secondary power- and data-receiving coils, which coupled to corresponding external power and data coils driven by a power amplifier. Power was delivered by a 500 KHz carrier, and data were delivered by frequency shift keying. Stimulation pulse strength, duration and frequency were programmed wirelessly from an external computer system. Through an ‘outbound’ telemetry channel, electrode impedances were monitored by an on-board analog to digital converter that sampled the output voltage waveforms. The final assembly was tested in vitro in physiological saline and in vivo in two mini-pigs for up to three months by measuring stimulus artifacts generated by the implant's current drivers. Overview of the boston retinal prosthesis: Challenges and opportunities to restore useful vision to the blind 2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society
doi_str_mv 10.1109/IEMBS.2011.6093610
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imprint IEEE, 2011
imprint_str_mv IEEE, 2011
issn 1557-170X
issn_str_mv 1557-170X
isbn 978-1-4577-1589-1
978-1-4244-4121-1
978-1-4244-4122-8
isbn_str_mv 978-1-4577-1589-1
978-1-4244-4121-1
978-1-4244-4122-8
language English
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match_str rizzo:2011:overviewofthebostonretinalprosthesischallengesandopportunitiestorestoreusefulvisiontotheblind:
publishDateSort 2011
publisher IEEE
record_id 6093610
recordtype ai
series 2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society
source_id 89
title Overview of the boston retinal prosthesis: Challenges and opportunities to restore useful vision to the blind
title_full Overview of the boston retinal prosthesis: Challenges and opportunities to restore useful vision to the blind
title_fullStr Overview of the boston retinal prosthesis: Challenges and opportunities to restore useful vision to the blind
title_full_unstemmed Overview of the boston retinal prosthesis: Challenges and opportunities to restore useful vision to the blind
title_short Overview of the boston retinal prosthesis: Challenges and opportunities to restore useful vision to the blind
title_sort overview of the boston retinal prosthesis: challenges and opportunities to restore useful vision to the blind
topic Retina
Electrodes
Coils
Implants
Arrays
Prosthetics
Surgery
url http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=6093610
http://doi.org/10.1109/IEMBS.2011.6093610
publishDate 2011
physical 7492-7495
description A small, hermetic, wirelessly-controlled retinal prosthesis was developed for pre-clinical studies in Yucatan mini-pigs. The device was implanted on the outside of the eye in the orbit, and it received both power and data wirelessly from external sources. The prosthesis drove a sub-retinal thin-film array of sputtered iridium oxide stimulating electrodes. The implanted device included a hermetic titanium case containing the 16-channel stimulator chip and discrete circuit components. Feedthroughs in the hermetic case connected the chip to secondary power- and data-receiving coils, which coupled to corresponding external power and data coils driven by a power amplifier. Power was delivered by a 500 KHz carrier, and data were delivered by frequency shift keying. Stimulation pulse strength, duration and frequency were programmed wirelessly from an external computer system. Through an ‘outbound’ telemetry channel, electrode impedances were monitored by an on-board analog to digital converter that sampled the output voltage waveforms. The final assembly was tested in vitro in physiological saline and in vivo in two mini-pigs for up to three months by measuring stimulus artifacts generated by the implant's current drivers.
container_start_page 7492
container_title 2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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