Visual Prosthesis | Accomplishments

This diagram shows the implantable device. As for the device design, the highest priority is placed on the safety for long-term implantation.


Electronic circuit generates electrical signals (pulses) in response to the image transferred from the external unit.	This unit modulates electrical signals (pulses) and delivers them to the corresponding electrodes.

49-ch Stimulus Electrode Array
	The array is designed to ensure both safety and durability in the body through specific microfabrication process.
Vitreous Electrode
	The vitreous electrode is made of platinum and implanted into the vitreous. Stimulation pulse is introduced from the stimulus electrode to the vitreous electrode with penetrating the retina.
Cable for Stimulus Electrode
	This magnified photograph shows the cable connecting the stimulus electrode and the electronic circuit. Using only biocompatible materials, we achieved both durability and flexibility to allow the cable to tolerate eye movement.
Multiplexer
	A large number of stimulus electrodes can be controlled by the multiplexer. Stimulation current from the electronic circuit is distributed through the chip to each electrode.