PROBLEM TO BE SOLVED: To provide a visual sense restoration aiding device capable of appropriately applying electric stimulation pulse signals to cells constituting a retina for restoring the visual sense.SOLUTION: The visual sense restoration aiding device for restoring the visual sense by electrically stimulating the cells constituting the retina comprises a photography means for photographing a subject to be recognized by a patient, a signal generating means with a plurality of electrodes disposed on the outside of the choroid of the patients eye for applying the electric stimulation pulse signals to the cells constituting the retina, a signal converting means connected to the photography means for converting the photographed photography information to data for the electric stimulation pulse signals and transmitting the data to the signal generating means, a receiving means connected to the signal generating means for receiving the data from the signal converting means, and an indifferent electrode with the opposite polarity from the polarity of the electrodes. The waveform of the electric stimulation pulse signals is the biphasic square wave composed of square waves with different polarities, and the pulse width is from 0.2 msec to 2 msec.COPYRIGHT: (C)2007,JPO&INPIT【課題】 網膜を構成する細胞に視覚の再生を行うための電気刺激パルス信号を好適に与える視覚再生補助装置を提供すること。【解決手段】 網膜を構成する細胞を電気刺激することにより視覚を再生する視覚再生補助装置において、患者に認知させる被写体を撮影する撮影手段と、患者眼の脈絡膜の外側に置かれるとともに網膜を構成する細胞に電気刺激パルス信号を与える複数の電極を有する信号発生手段と、撮影手段に接続され撮影された撮影情報を電気刺激パルス信号用のデータに変換して信号発生手段に送信する信号変換手段手段と、信号発生手段に接続され前記信号変換手段からのデータを受信する受信手段と、電極の極性と反対の極性を持つ不関電極と、を備え、電気刺激パルス信号の波形は異なる極性の矩形波で構成された二相性矩形波で,そのパルス幅を0.2msec以上2msec以下とすること。【選択図】 図3
