Patent ID: 6647297
Filing Date: 2003-11-11
Classification: A61N,Y10S

Abstract:
A permanent retinal implant device for establishing and improving vision, comprising:a silicon chip, for placement in front of a retina in an eye, having onboard microelectronic circuitry and a nanochannel glass array of electrodes with a curved conformal surface for placement on said retina; said microelectronic circuitry having an array of unit cells each having a photodiode, a capacitor, and an amplifier; said photodiodes of said unit cells comprising a photodiode layer for converting photons into electric charge; said capacitors of said unit cells for collecting electronic charges proportional to the number of transduced photons; and a bi-phase voltage pulse generating circuit for modulating a signal based on said charges and amplfying a signal to the adjacent neural tissue, whereby said neural tissue is stimulated and is induced to establish sight.