Engineering

This component deals with the conception, design and implementation of the retinal prosthesis. The design and fabrication of the electrode array needs to be suitable for surgical implantation in the eye and remain functional for a long period of time.

A silicon wafer with flexible polyimide iridium oxide electrode arrays from which the first steps in the prosthesis fabrication are created.

The development of biological implantable devices incorporating microelectronic circuitry requires advanced micro-fabrication techniques. The importance of device stability stems from the fact that the microelectronics have to function properly within the relatively harsh environment of the human body. This represents a major challenge in developing implantable devices with long-term system performance while reducing their overall size.

Long-term biocompatibility is one of the most significant challenges to be met in order to develop a successful retinal prosthesis. We have worked to identify implantable and biologically safe materials that can be microfabricated into exceptionally thin and flexible structures.

Close up of a flex circuit to which the microelectronic components will be attached for final assembly.