Patent ID: 8244363
Filing Date: 2012-08-14
Classification: A61N

Abstract:
1. A retinal stimulation system configured to stimulate neural tissue in a subject's eye, the retinal stimulation system comprising: an electronics package; a two dimensional array of electrodes, each associated with the electronics package and configured to apply current to the subject's retina; an operative control for activating an impedance check for each electrode of the two dimensional array of electrodes, wherein the impedance check comprises impedance measures of each electrode at one frequency or multiple frequencies; a real time indicator of electrode impedance, measured in response to the impedance check activated by the operative control, of said array of electrodes as a two dimensional grid representing each of the electrodes suitable for operating room use including a visual user interface configured to show impedance values of the electrodes in a grid corresponding to the two dimensional array of electrodes, wherein the grid indicates status of each electrode in the two dimensional array of electrodes using a status symbol for each electrode, the status including an operational state, a broken state, a shorted state, and a deselected state; and an attachment means suitable for attaching the two dimensional array of electrodes to the subject's retina when the real time indicator of electrode impedance shows a most preferable impedance across the two dimensional array of electrodes, wherein current to be applied by the array of electrodes is configured to be higher for a first electrode when the first electrode has an impedance lower than the impedance of the second electrode.