60-Electrode Retinal Prosthesis

High system complexity
High degree of miniaturization
Most numbers of stimulation channels
High system reliability

Indication for Use

Retinitis pigmentosa (RP) is a type of retinal disease that results from degeneration of the photoreceptor cells of the retina, leading to a gradual decrease in visual field and eventually complete blindness. RP was included in the first Rare Diseases List by the National Health Commission in 2018.

Leading Technologies

Integrated Circuit：Wide pulse, multimodal impedance measurement, active charge balance
Thin-membrane electrode：High electrode density, low surface impedance
Packaging：super high density and sophisticated hermetic sealing
Wireless transmission：Long distance, high data rate, single-frequency bidirectional data energy
Coding strategy：Deep focus stimulation, virtual electrode stimulation

Progress Update

Animal test and biocompatibility test completed

Selected to the coveted NMPA (then CFDA) Innovative Medical Device Special Regulatory Pathway Program (Fast Track)

Multi-center clinical study protocol approved by PI medical ethics board

How It Works

Images are captured by the built-in camera on glasses frame and then compressed and coded by external visual processing unit.

External coil wirelessly transmits data and energy to the corresponding implanted coil via near-field inductive coupling

The implanted chip emits electrical stimulation pulse, and the microelectrode array stimulates the optic ganglion cells

Stimulation signals are transmitted along the optic nerve pathway to the visual cortex forming semblance of vision

Implantable Components

External Visual Processing Unit