Title :
Fully Implantable Retinal Prosthesis Chip with Photodetector and Stimulus Current Generator
Author :
Tanaka, T. ; Sato, K. ; Komiya, K. ; Kobayashi, T. ; Watanabe, T. ; Fukushima, T. ; Tomita, H. ; Kurino, H. ; Tamai, M. ; Koyanagi, M.
Author_Institution :
Tohoku Univ., Sendai
Abstract :
To recover visual sensation of blind patients, we have fabricated a fully implantable retinal prosthesis chip that includes photodetector and stimulus current generator. For the first time, we successfully implanted the retinal prosthesis chip bonded on the flexible cable with stimulus electrode array into a rabbit eyeball. Moreover, we recorded and analyzed electrically evoked potential (EEP) elicited from a rabbit brain by current stimulation to retina.
Keywords :
biomedical electrodes; eye; photodetectors; prosthetics; visual evoked potentials; blind patients; current stimulation; electrically evoked potential; flexible cable; implantable retinal prosthesis chip; photodetector; rabbit brain; rabbit eyeball; stimulus current generator; stimulus electrode array; visual sensation; Biomedical engineering; Biomedical optical imaging; Circuits; Electrodes; High speed optical techniques; Optical signal processing; Photodetectors; Photoreceptors; Prosthetics; Retina;
Conference_Titel :
Electron Devices Meeting, 2007. IEDM 2007. IEEE International
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-1507-6
Electronic_ISBN :
978-1-4244-1508-3
DOI :
10.1109/IEDM.2007.4419127
