Abstract: A plurality of electrodes are adapted to be attached on a living body. An electric pulse is output through the electrodes as an electric stimulation to the living body. An analyzer is operable to detect a waveform of the electric pulse and to analyze a parameter of the waveform. A display displays the parameter together with one of the waveform and a model waveform which is an invariable waveform representative of the electric pulse.

Abstract: An electrotherapy apparatus for generating first and second waveforms having reversed polarities. When the waveform of the electric energy outputted from the output electrodes 112a and 112b is the positive phase, the inductor 105, electric energy storage section 104, the first switch means 101, output electrode 112a, patient 113, and the output electrode 112b are connected so that these can form the closed circuit. In the case where the waveform of the electric energy outputted from the output electrodes 112a and 112b is the negative phase, when the first switch means 101 is closed, the inductor 105 and the electric energy storage section 104 form the closed circuit, and when the first switch means 101 is opened, the inductor 105 and the electric energy storage section 104 are electrically separated, and the delivery of the electric energy to the output electrodes 112a, and 112b is conducted by the inductor 105.

Abstract: To provide a semiconductor switch driving circuit in which a stable conducting state and a non-conducting state can be kept, the high-speed switching operation is enabled, a lag of switching timing is minimized and which has a simple circuit, the semiconductor switch driving circuit for driving a semiconductor switch in which multistage switching devices (IGBT) are connected includes a transformer, a primary side and a secondary side and is configured so that voltage between the gate and the emitter of a switching device can be continuously kept positive, voltage between the gate and the emitter can be continuously kept negative, voltage between the gate and the emitter is alternately switched to positive voltage or negative voltage.

Abstract: A plurality of electrodes are adapted to be attached on a living body. An electric pulse is output through the electrodes as an electric stimulation to the living body. An analyzer is operable to detect a waveform of the electric pulse and to analyze a parameter of the waveform. A display displays the parameter together with one of the waveform and a model waveform which is an invariable waveform representative of the electric pulse.

Abstract: The invention has an object of providing a disarm circuit using a semiconductor switch device that can secure the safety of an electrotherapy apparatus by disarming even if the control of the semiconductor switch is disabled because of some cause. Therefore, the disarm circuit is provided with a transformer, its primary side area, its secondary side area, a resistor for disarming and the semiconductor switch device. The secondary side area is characterized in that a resistor for limiting excessive current for automatically turning on the semiconductor switch device by stored electric energy is connected between a positive terminal of an electric energy storage section and the gate of the semiconductor switch device.

Abstract: The apparatus is structured in such a manner that, when the waveform of the electric energy outputted from the output electrodes 112a and 112b is the positive phase, the inductor 105, electric energy storage section 104, the first switch means 101, output electrode 112a, patient 113, and the output electrode 112b are connected so that these can form the closed circuit, and in the case where the waveform of the electric energy outputted from the output electrodes 112a and 112b is the negative phase, when the first switch means 101 is closed, the inductor 105 and the electric energy storage section 104 form the closed circuit, and when the first switch means 101 is opened, the inductor 105 and the electric energy storage section 104 are electrically separated, and the delivery of the electric energy to the output electrodes 112a, and 112b is conducted by the inductor 105.

Abstract: To provide a semiconductor switch driving circuit in which a stable conducting state and a non-conducting state can be kept, the high-speed switching operation is enabled, a lag of switching timing is minimized and which has a simple circuit, the semiconductor switch driving circuit for driving a semiconductor switch in which multistage switching devices (IGBT) are connected includes a transformer, a primary side and a secondary side and is configured so that voltage between the gate and the emitter of a switching device can be continuously kept positive, voltage between the gate and the emitter can be continuously kept negative, voltage between the gate and the emitter is alternately switched to positive voltage or negative voltage

Abstract: The invention has an object of providing a disarm circuit using a semiconductor switch device that can secure the safety of an electrotherapy apparatus by disarming even if the control of the semiconductor switch is disabled because of some cause. Therefore, the disarm circuit is provided with a transformer, its primary side area, its secondary side area, a resistor for disarming and the semiconductor switch device. The secondary side area is characterized in that a resistor for limiting excessive current for automatically turning on the semiconductor switch device by stored electric energy is connected between a positive terminal of an electric energy storage section and the gate of the semiconductor switch device.