Living body stimulator

A living body stimulator, comprising:

• a low-frequency pulse generator configured to generate a low-frequency pulse signal wave;
• a high-frequency signal generator configured to generate a high-frequency signal wave;
• a synthesizer configured to form a synthesized waveform in which the high-frequency signal wave generated by the high-frequency signal generator is superimposed on the low-frequency pulse signal wave generated by the low-frequency pulse generator, and apply an electrical stimulation by the synthesized waveform to a living body;
• a controller configured to control the synthesizer so that one cycle is configured from an ON period of the synthesized waveform in which the high-frequency signal wave is superimposed on the low-frequency pulse signal wave and an OFF period in which the high-frequency signal wave is not superimposed on the low-frequency pulse signal wave;
• and
• an output transformer configured to receive the synthesized waveform, wherein
• an impedance on an output side of the output transformer is set such that a voltage of the synthesized waveform gradually increases and decreases during the ON period of the synthesized waveform on the output side of the output transformer when one or more pairs of pads connected to the output side of the output transformer are attached to the living body, and an integrating circuit is formed for the synthesized waveform on the output side of the output transformer in a state where the pads are attached to the living body,
• the controller is configured to control the synthesizer such that at least a part of the synthesized waveform is configured from a variable synthesized waveform group in which at least one of the ON period and the OFF period has been varied at a low-frequency cycle or in which an amplitude level of the high-frequency signal wave of the ON period has been varied at the low-frequency cycle,
• a living body stimulation waveform for applying the synthesized waveform to the living body is a repetitive waveform formed from a combination of the variable synthesized waveform group and a fixed synthesized waveform group in which the ON period and the OFF period are fixed,
• the living body stimulation waveform is formed from a combination of the variable synthesized waveform group with an application time of 2 to 10 seconds and the fixed synthesized waveform group with an application time of 1 to 4 seconds, and
• a rest period is provided between a period of the variable synthesized waveform group and a period of the fixed synthesized waveform group.