PROBLEM TO BE SOLVED: To provide a living tissue stimulation circuit which carries out electric stimulation suitably by widening the setting range of the stimulation condition of a bipolar electric stimulation pulse signal.SOLUTION: The living tissue stimulation circuit includes: an H-bridged circuit that includes a first series section in which a first semiconductor switch on a power source side and a third semiconductor switch on a ground side are connected to each other in series and a second series section in which a second semiconductor switch on the power source side and a fourth semiconductor switch on the ground side are connected to each other in series and wherein the first series section and the second series section are connected to each other in parallel a stimulation electrode connected to a first connection point between the first and third semiconductor switches a counter electrode connected to a second connection point between the second and fourth semiconductor switches a first current source arranged on the ground side ends of the third and fourth semiconductor switches for setting current value outputted from the stimulation electrode and a second current source arranged on the power source side ends of the first and second semiconductor switches for setting current value outputted from the stimulation electrode.COPYRIGHT: (C)2012,JPO&INPIT【課題】 双極性の電気刺激パルス信号の刺激条件の設定範囲を広くでき、好適に電気刺激を行える生体組織用刺激回路を提供する。【解決手段】 生体組織用刺激回路は、電源側の第1半導体スイッチと接地側の第3半導体スイッチを直列接続してなる第1直列部と,電源側の第2半導体スイッチと接地側の第4半導体スイッチを直列接続してなる第2直列部とが並列接続されてなるHブリッジ回路と、第1半導体スイッチと第3半導体スイッチとの間の第1接続点に接続される刺激電極と、第2半導体スイッチと第4半導体スイッチとの間の第2接続点に接続される対向電極と、第3半導体スイッチ及び第4半導体スイッチの接地側の一端に設けられ、刺激電極から出力される電流値を定める第1電流源と、第1半導体スイッチ及び第2半導体スイッチの電源側の一端に設けられ、刺激電極から出力される電流値を定める第2電流源とを備える。【選択図】 図1
