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Protuberant Electrode Structures for New Retinal Implants

Losada, Pedro Gonzalez and Rousseau, Lionel and Grzeskowiak, Marjorie and Dégardin, Julie and Berhanu, Sarah and Dubus, Elisabeth and Picaud, Serge and Lissorgues, Gaëlle Protuberant Electrode Structures for New Retinal Implants. (2017) In: Eurosensors2017, 3 September 2017 - 6 September 2017 (Paris, France).

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Official URL: https://doi.org/10.3390/proceedings1040315


Focal stimulation of neural tissue is a challenge in retinal prosthetic devices in which the aim is to improve the spatial resolution of the stimulation and therefore increase the electrode density of the prosthetic devices. Our work intends to create a new implant able to enhance the focalisation of the stimulation signal through protuberant electrodes. These electrodes are micro fabricated on a soft polyimide substrate using classical metal electrodeposition techniques. Before proceeding with fabrication a FEM model of the electrode’s current density was done to select the best-performing structures and geometries in terms of local stimulation. Based on these models, several prototypes were fabricated and implanted in vivo into a rat’s eye to verify the adaptation to the retina tissue.

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-02182353
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Other partners > Conservatoire National des Arts et Métiers - CNAM (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole de l'Innovation Technologique - ESIEE PARIS (FRANCE)
French research institutions > Institut National de la Santé et de la Recherche Médicale - INSERM (FRANCE)
Other partners > Sorbonne Université (FRANCE)
Other partners > Université Paris-Est Marne-La-Vallée - UPEM (FRANCE)
Laboratory name:
Deposited On:12 Jul 2019 14:37

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