A gel deployment device for use with an electrotherapy system includes a substrate and a conductive surface mechanically coupled to the substrate. The device includes one or more gel reservoirs disposed on the substrate, each surrounding an open center portion, and a fluid pressure source in fluid communication with the one or more gel reservoirs. At least one frangible seal is disposed within the open center portion and configured to release a volume of conductive gel from the one or more gel reservoirs to the conductive surface.

A wearable monitoring and therapeutic device includes at least two sensing electrodes. Each sensing electrode includes a metallic surface integrated in a garment. The device includes at least two therapy electrodes. Each of the at least two therapy electrodes includes a receptacle, and each receptacle includes at least one dose of conductive fluid. The device includes the garment. The garment includes a fabric that is stretchable and that is breathable and/or moisture wicking, and conductive wiring configured to at least partially electrically connect that at least two sensing electrodes to at least one defibrillator component. The device includes the at least one defibrillator component. The at least two therapy electrodes are configured to provide an electric shock to the subject. Prior to the application of the electric shock, each receptacle is configured to release the conductive fluid from the receptacle.

Systems, devices, and techniques that enable medical devices to integrate and interoperate with one another are provided. In some examples, a wearable cardiac defibrillator (WCD) advantageously interoperates with an implanted pacemaker to provide a variety of benefits. For instance, in some examples, the WCD oversees execution of an antitachycardia (ATP) protocol by the implanted pacemaker and intervenes as needed. In other examples, the WCD drives an ATP protocol in which internal pacing pulses are provided by the implanted pacemaker under the control of the WCD. In other examples, the WCD monitors the activity of the implanted pacemaker to identify potential maintenance issues affecting the implanted pacemaker. The WCD and the implanted pacemaker may also interoperate to classify and act upon particular arrhythmia conditions.

In embodiments, a Wearable Cardioverter Defibrillator (WCD) system includes a support structure for the patient to wear, and components that the support structure maintains on the patient's body. The components include a defibrillator, associated electrodes, and so on. The defibrillator can operate in a WCD mode while the patient wears the support structure. The defibrillator can further operate in a different, AED mode, during which time the patient need not wear a portion of the support structure, or even the entire support structure. Sometimes the AED mode is a type of a fully automatic AED mode. Other times the AED mode is a type of a semi-automated AED mode, where an attendant is present to administer the shock; at such times, the patient may not even need to have electrodes attached. This way the patient is more comfortable for a longer time.

A wearable medical device is provided for monitoring a cardiac condition of a patient, where the device is releasably mounted to the patient's chest and includes at least two skin-facing electrodes forming a first one or more ECG leads for ongoing monitoring of heart functioning and at least one touch electrode for intermittently obtaining additional circuit vectors for deriving additional metrics regarding the functioning of the patient's heart. Each touch electrode is configured to form an additional lead/vector that is a larger vector and/or separated by at least 15° from a corresponding first lead/vector formed from the first one or more ECG leads in a vector cardiogram representation of the first one or more ECG leads and the additional lead/vector.

An automated external defibrillator (AED) system includes shock generating electronics configured to provide at least one electrical shock suitable for a patient experiencing a cardiac event, a battery configured for providing power to the shock generating electronics, power management circuitry configured for managing the shock generating electronics and the battery, a single microprocessor configured for controlling the power management circuitry, and an enclosure configured to house the shock generating electronics, the battery, the power management circuitry, and the single microprocessor. In an embodiment, the AED system includes at least two cardiac pads in electrical connection with the shock generating electronics and including a medication delivery mechanism configured for delivering a predetermined dose of a medication to a patient when the cardiac pads are placed on the patient for shock delivery.

In at least one example, a medical device is provided. The medical device includes at least one therapy electrode, at least one electrocardiogram (ECG) electrode, at least one acoustic sensor, and at least one processor coupled with the at least one acoustic sensor, the at least one ECG electrode, and the at least one therapy electrode. The at least one processor can receive at least one acoustic signal from the at least one acoustic sensor, receive at least one electrode signal from the ECG electrode, detect at least one unverified cardiopulmonary anomaly using the at least one electrode signal, and verify the at least one unverified cardiopulmonary anomaly with reference to data descriptive of the at least one acoustic signal.

A system includes an ambulatory medical device and a server. The ambulatory medical device comprises: a digital signal processing module configured to: detect an abnormal rhythm from an electrocardiogram (ECG) signal of a patient using a first signal processing routine; and generate a first flag indicating an abnormal rhythm is detected; and a noise detector module configured to: receive the ECG signal from the digital signal processing module; execute a second signal processing routine to classify the abnormal rhythm as one of an arrhythmia event and a noise event; and, if the abnormal rhythm is classified as a noise event, initiate a preconfirmation period during which the noise detector module continues to evaluate the abnormal rhythm and classify the abnormal rhythm as one of an arrhythmia event and a noise event using the second signal processing routine; and generate a second flag indicating the start of the preconfirmation period; and a server configured to: receive the ECG signal, the first flag indicating the abnormal rhythm, and the second flag indicating the start of the preconfirmation period; and provide a visual indication of the preconfirmation period.

A wearable cardiac monitoring and treatment device includes a garment, a plurality of ECG electrodes and a plurality of therapy electrodes supported by the garment. A fastener is configured to secure the garment about a torso of the patient for a prescribed duration. A disengagement sensor to provides an indication of disengagement of the fastener prior to expiration of the prescribed duration in which the garment is no longer secured about the torso of the patient. The device includes a therapy delivery circuit coupled to the plurality of therapy electrodes and configured to deliver one or more therapeutic pulses. A controller coupled to therapy delivery circuit is configured to analyze an ECG signal monitored by the plurality of ECG electrodes and, upon detecting one or more treatable arrhythmias, cause the therapy delivery circuit to deliver the one or more therapeutic pulses to the patient.

In one example, an ambulatory medical device is provided. The ambulatory medical device includes a plurality of subsystems, at least one sensor configured to acquire data descriptive of a patient, a user interface and at least one processor coupled to the at least one sensor and the user interface. The at least one processor is configured to identify subsystem status information descriptive of an operational status of each subsystem of the plurality of subsystems and to provide a device health report for the ambulatory medical device via the user interface, the device health report being based on the operational status of each subsystem.