Patent ID: 8504167
Filing Date: 2013-08-06
Classification: A61N,H02J

Abstract:
1. A living tissue stimulation circuit comprising: an H-bridged circuit that includes a first series section in which a first semiconductor switch connected to a power source side and a third semiconductor switch connected to a ground side are connected to each other in series, and a second series section in which a second semiconductor switch connected to the power source side and a fourth semiconductor switch connected to the ground side are connected to each other in series, the first series section and the second series section being connected to each other in parallel; a stimulation electrode connected to a first node between the first semiconductor switch and the third semiconductor switch of the first series section; a counter electrode connected to a second node between the second semiconductor switch and the fourth semiconductor switch of the second series section; a capacitor disposed between the first node and the second node and configured to determine an effective voltage between the stimulation electrode and the counter electrode and cut off a direct component; and a current adjusting circuit including a first current source and a second current source which are configured to determine a current value output from the stimulation electrode, the first current source being disposed at an end of the ground side of the third semiconductor switch and an, end of the ground side of the fourth semiconductor switch and the second current source which is different from the first current source being disposed at an end of the power source side of the first semiconductor switch and an end of the power source side of the second semiconductor switch.