A wearable external defibrillator with a plurality of ECG sensing electrodes and a first defibrillator pad electrode and a second defibrillator pad electrode. The ECG sensing electrodes and the defibrillator pad electrodes are configured for long term wear.

A technique of controlling operation of a user-adjustable cardiac pacemaker, or a software model thereof, in a training mode is described. A method implementation of the technique comprises generating at least one cardiac event by a feedback-based heart simulator, wherein the cardiac event includes a pulse parameter set defining at least a pulse amplitude. The method further comprises transmitting the at least one cardiac event, or a first signal representation derived therefrom, to an electro cardiogram, ECG, generator configured to generate ECG graphics triggering a user to perform, in the training mode, one or more user adjustments at the cardiac pacemaker or its software model. Further still, the method comprises transmitting the at least one cardiac event, or a second signal representation derived therefrom, to the cardiac pacemaker or its software model, and acquiring stimulus information on one or more stimuli generated by the cardiac pacemaker or its software model. In the method presented herein, the stimulus information is fed back to the heart simulator for use in generation of one or more further cardiac events.

The present invention provides both methods and devices for termination of arrhythmias, such as ventricular or atrial tachyarrhythmias. The device and method involves application of alternating current (AC) for clinically significant durations at selected therapeutic frequencies through the cardiac tissue to a subject experiencing arrhythmia. Methods are also provided to minimize or eliminate pain during defibrillation.

A pacing system includes a signal generator and an electromechanical switch. The signal generator is configured to generate a pacing signal. The electromechanical switch has a plurality of outputs that are configured to be coupled to a plurality of electrodes inserted into a heart of a patient, each output configured to deliver the pacing signal to a respective electrode. The electromechanical switch is configured to route the pacing signal to no more than a single selected one of the outputs at any given time, so as to pace the heart using no more than a single selected one of the electrodes.

In one example, an apparatus of a wearable cardioverter defibrillator (WCD) system comprises a support structure wearable by a patient, a plurality of electrocardiogram (ECG) electrodes to obtain an ECG signal, a processor to receive and analyze the ECG signal of the patient, wherein the processor is configured to monitor four or more channels of the ECG signal, a high voltage subsystem coupled with defibrillation electrodes configured to be coupled with patient, wherein the processor is configured to cause the high voltage subsystem to apply a therapeutic shock to the patient through the defibrillation electrodes in response to a shockable event detected by the processor from the ECG signal. The processor measures a peak-to-peak amplitude of QRS complexes of the ECG signal, and detects asystole in the patient when the peak-to-peak amplitude of one or more QRS complexes is less than an asystole threshold. Other examples and related methods are disclosed herein.

In at least one example, a medical device is provided. The medical device includes at least one therapy electrode, at least one acoustic sensor, and at least one processor coupled with the at least one therapy electrode and the at least one acoustic sensor. The at least one processor is configured to deliver at least one pacing pulse via the at least one therapy electrode and to analyze processed acoustic data to determine whether the at least one pacing pulse resulted in capture.

A wearable external defibrillator with a plurality of ECG sensing electrodes and a first defibrillator pad electrode and a second defibrillator pad electrode. The ECG sensing electrodes and the defibrillator pad electrodes are configured for long term wear.

The invention relates to an electromedical implantable or extracorporeally applicable device for treating and monitoring organs as well as a method for therapeutic organ treatment. The aim of the invention is to create an electromedical implantable or externally applicable device which allows healing processes to be excited in diseased organs. Said aim is achieved by an electromedical implantable or extracorporeally applicable device for treating and monitoring organs, comprising a programmable generator and receiver unit which generates and receives electrical microcurrents and electromagnetic power and is connected in a conducting manner to electrodes, a telemetry unit that is integrated into the generator and receiver unit and is provided with a transmitter and a receiver for exchanging data with extracorporeal devices, and a power supply unit.

An apparatus for improving the cardiac function and cardiac output of a patient comprises a waveform generator that generates alternating voltage pulses, a controller to control the timing of the pulses, and electrodes that deliver the alternating voltage pulses to the patient's body. The alternating voltage pulses induce a field of alternating current pulses within the patient's body. As the pulses pass through a cardiac ventricle (or atrium), they increase the concentration of Ca.sup.2+ at the appropriate cardiomyocyte sites, and thereby increase the strength and duration of the ventricular (or atrial) contractions. In alternative embodiments, the electric field may be used to strengthen the contractions of non-cardiac muscle (e.g., skeletal muscle).

Energy is transmitted noninvasively to a patient using electrode-based stimulation devices or magnetic stimulation devices that are designed to non-invasively stimulate nerves selectively. The devices produce impulses that are used to treat atrial fibrillation, by stimulating a vagus nerve of a patient. The devices are also used to forecast the imminent onset of atrial fibrillation and then avert it by stimulating a vagus nerve.