| DOI | Trouver le DOI : https://doi.org/10.1002/adbi.202000055 |
|---|
| Auteur | Rechercher : Ahnood, ArmanIdentifiant ORCID : https://orcid.org/0000-0002-0253-7579; Rechercher : Cheriton, Ross1; Rechercher : Bruneau, Anne; Rechercher : Belcourt, James A.; Rechercher : Ndabakuranye, Jean Pierre; Rechercher : Lemaire, William; Rechercher : Hilkes, Rob; Rechercher : Fontaine, Réjean; Rechercher : Cook, John P. D.; Rechercher : Hinzer, Karin; Rechercher : Prawer, Steven |
|---|
| Affiliation | - Conseil national de recherches du Canada. Électronique et photonique avancées
|
|---|
| Bailleur de fonds | Rechercher : Australian Research Council; Rechercher : Natural Sciences and Engineering Research Council of Canada |
|---|
| Format | Texte, Article |
|---|
| Résumé | The design and benchtop operation of a wireless miniature epiretinal stimulator implant is reported. The implant is optically powered and controlled using safe illumination at near-infrared wavelengths. An application-specific integrated circuit (ASIC) hosting a digital control unit is used to control the implant's electrodes. The ASIC is powered using an advanced photovoltaic (PV) cell and programmed using a single photodiode. Diamond packaging technology is utilized to achieve high-density integration of the implant optoelectronic circuitry, as well as individual connections between a stimulator chip and 256 electrodes, within a 4.6 mm × 3.7 mm × 0.9 mm implant package. An ultrahigh efficiency PV cell with a monochromatic power conversion efficiency of 55% is used to power the implant. On-board photodetection circuity with a bandwidth of 3.7 MHz is used for forward data telemetry of stimulation parameters. In comparison to implants which utilize inductively coupled coils, laser power delivery enables a high degree of miniaturization and lower surgical complexity. The device presented combines the benefits of implant miniaturization and a flexible stimulation strategy provided by a dedicated stimulator chip. This development provides a route to fully wireless miniaturized minimally invasive implants with sophisticated functionalities. |
|---|
| Date de publication | 2020-11 |
|---|
| Maison d’édition | Wiley |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 0d19fc06-8313-4cc1-9244-834880beda7a |
|---|
| Enregistrement créé | 2022-05-03 |
|---|
| Enregistrement modifié | 2022-05-03 |
|---|
