The artificial retina device and its installation method the stimulus electrode and the ground return route electrode being arranged on both sides of the nervous retina

摘要

(57) Abstract The artificial retina device (10) when it is transplanted in the retina lower space of the eye of the person who is ill the retina diseased characteristic blind person of ru kind, is induced artificial vision by giving electric stimulus to the residual existence cell of the retina. In the artificial retina device (10), it is desirable, for the stimulus arrangement of electrode (12) to be installed in the retina lower space, the extended section (30) of tail condition accommodating the distal (2036) section of the ground return route arrangement of electrode, (16) is installed in vitreous body intracavity. The stimulus arrangement of electrode has the arrangement of the electrode assistant body (22). As for the electrode assistant body (22), each has had the micro photodiode (23a) 1 or more, for example these diodes electric, being connected in series, it provides voltage and the electric current which it can make the micro electrode increase. The ground return route electrode (14) of the stimulus arrangement of electrode (12) and the ground return route arrangement of electrode (16) being arranged on both sides of the nervous retina, in the nervous retina cell efficiency and with high resolution the sutra it is desirable retina to try to be able administer electric stimulus.