Abstract: A wearable medical device for detecting and treating life-threatening arrhythmias includes a wearable vest portion, sensing electrodes, therapy pads, at least one motion sensor, and a cardiac monitor. The cardiac monitor is configured to detect whether the patient is experiencing a treatable arrhythmia using an ECG signal and in response, determine a confidence level for the detected treatable arrhythmia using outputs from the at least one motion sensor. Determining the confidence level includes detecting patient motion prior to the detection of the treatable arrhythmia. Determining the confidence level further includes increasing the confidence level in response to determining that the patient is motionless coinciding with the detection of the treatable arrhythmia, or decreasing the confidence level in response to determining the patient motion after the detection of the treatable arrhythmia. The cardiac monitor is configured to determine whether to deliver a treatment shock based on the confidence level.

Abstract: A wearable medical device for detecting and treating life-threatening arrhythmias includes a wearable vest portion, sensing electrodes, therapy pads, at least one motion sensor, and a cardiac monitor. The cardiac monitor is configured to detect whether the patient is experiencing a treatable arrhythmia using an ECG signal and in response, determine a confidence level for the detected treatable arrhythmia using outputs from the at least one motion sensor. Determining the confidence level includes detecting patient motion prior to the detection of the treatable arrhythmia. Determining the confidence level further includes increasing the confidence level in response to determining that the patient is motionless coinciding with the detection of the treatable arrhythmia, or decreasing the confidence level in response to determining the patient motion after the detection of the treatable arrhythmia. The cardiac monitor is configured to determine whether to deliver a treatment shock based on the confidence level.

Abstract: A wearable medical treatment device for monitoring a patient's ECG and treating a cardiac condition is disclosed. The device includes a patient vest portion having cardiac sensing electrodes to obtain an ECG signal of a patient, therapy electrodes for external placement proximate to skin of the patient for delivering electrotherapy to treat the cardiac condition, and, a monitor coupled to the cardiac sensing electrodes and the therapy electrodes via at least one cable. The monitor includes a system computer disposed in the monitor. The system computer is configured to receive the ECG signals of the patient and to execute at least one arrhythmia detection algorithm to determine whether the patient is experiencing a cardiac condition in need of treatment, and a mechanical shock detector disposed on the monitor and configured to detect at least one of a force or acceleration indicative of a mechanical shock to the monitor.

Abstract: A cardiac monitoring system includes cardiac sensing electrodes for external placement proximate to the patient to sense ECG signals of the patient; one or more accelerometers configured to generate patient activity data based on signals corresponding to changes in the patient's body position and movement; and a monitoring computer configured to correlate the ECG signals of the patient with the patient activity data generated from the one or more accelerometers to determine ECG signal contamination, analyze the ECG signals of the patient to extract at least heart rate data of the patient and detect a cardiac arrhythmia based at least in part on the heart rate data, and change a confidence in the detected cardiac arrhythmia based on the determined ECG signal contamination; wherein at least the patient activity data and the heart rate data are analyzed to determine a change in a physiological condition of the patient over time.

Abstract: A cardiac monitoring system includes cardiac sensing electrodes for external placement proximate to the patient to sense ECG signals of the patient; one or more accelerometers configured to generate patient activity data based on signals corresponding to changes in the patient's body position and movement; and a monitoring computer configured to correlate the ECG signals of the patient with the patient activity data generated from the one or more accelerometers to determine ECG signal contamination, analyze the ECG signals of the patient to extract at least heart rate data of the patient and detect a cardiac arrhythmia based at least in part on the heart rate data, and change a confidence in the detected cardiac arrhythmia based on the determined ECG signal contamination; wherein at least the patient activity data and the heart rate data are analyzed to determine a change in a physiological condition of the patient over time.

Abstract: A cardiac monitoring system includes an externally wearable cardiac monitoring device; at least one cardiac sensing electrode operatively coupled to the device and configured to be disposed in proximity to a patient's skin to monitor cardiac activity of the patient; at least one accelerometer configured to generate signals indicative of patient body movement; and a microcontroller disposed in the device and configured to receive the signals indicative of patient body movement, receive one or more electrocardiogram (ECG) signals of the patient from the at least one cardiac sensing electrode, and analyze the one or more ECG signals received over a period of time to determine at least one cardiac arrhythmia condition of the patient; the device being configured to wirelessly transmit data related to the at least one cardiac arrhythmia condition and the signals indicative of patient body movement recorded over the period of time to a central server.

Abstract: A wearable defibrillator consists of a vest (or belt) which is worn by the patient. The device monitors the patient's ECG with sensing electrodes and can monitor other patient conditions and in appropriate cases can treat certain conditions. An accelerometer(s) in the wearable defibrillator can allow for the device to determine the position, movements, forces applied to the patient, and/or the device. The device can use a least one patient motion detector generating a signal indicative of patient activity. Analysis of the signal can be indicative of patient activity appropriate for treatment or indication of device condition.

Abstract: A wearable defibrillator consists of a vest (or belt) which is worn by the patient. The device monitors the patient's ECG with sensing electrodes and can monitor other patient conditions and in appropriate cases can treat certain conditions. An accelerometer(s) in the wearable defibrillator can allow for the device to determine the position, movements, forces applied to the patient, and/or the device. The device can use a least one patient motion detector generating a signal indicative of patient activity. Analysis of the signal can be indicative of patient activity appropriate for treatment or indication of device condition.

Abstract: A wearable defibrillator consists of a vest (or belt) which is worn by the patient. The device monitors the patient's ECG with sensing electrodes and can monitor other patient conditions and in appropriate cases can treat certain conditions. An accelerometer(s) in the wearable defibrillator can allow for the device to determine the position, movements, forces applied to the patient, and/or the device. The device can use a least one patient motion detector generating a signal indicative of patient activity. Analysis of the signal can be indicative of patient activity appropriate for treatment or indication of device condition.

Abstract: A wearable defibrillator consists of a vest (or belt) which is worn by the patient. The device monitors the patient's ECG with sensing electrodes and can monitor other patient conditions and in appropriate cases can treat certain conditions. An accelerometer(s) in the wearable defibrillator can allow for the device to determine the position, movements, forces applied to the patient, and/or the device. The device can use a least one patient motion detector generating a signal indicative of patient activity. Analysis of the signal can be indicative of patient activity appropriate for treatment or indication of device condition.

Abstract: A wearable defibrillator consists of a vest (or belt) which is worn by the patient. The device monitors the patient's ECG with sensing electrodes and can monitor other patient conditions and in appropriate cases can treat certain conditions. An accelerometer(s) in the wearable defibrillator can allow for the device to determine the position, movements, forces applied to the patient, and/or the device. The device can use a least one patient motion detector generating a signal indicative of patient activity. Analysis of the signal can be indicative of patient activity appropriate for treatment or indication of device condition.

Abstract: A wearable defibrillator consists of a vest (or belt) which is worn by the patient. The device monitors the patient's ECG with sensing electrodes and can monitor other patient conditions and in appropriate cases can treat certain conditions. An accelerometer(s) in the wearable defibrillator can allow for the device to determine the position, movements, forces applied to the patient, and/or the device. The device can use a least one patient motion detector generating a signal indicative of patient activity. Analysis of the signal can be indicative of patient activity appropriate for treatment or indication of device condition.