Abstract: A wearable medical device configured to monitor a patient for cardiac arrhythmias includes a water-resistant belt, ECG sensing electrodes, and therapy electrodes discrete from the ECG sensing electrodes. At least some of the ECG sensing electrodes and therapy electrodes are disposed on one or more common adhesive backings configured to be adhesively attached to the patient's torso. The wearable medical device also includes an elongated cable, including a removable connector, and a control unit configured to be removably electrically coupled to the electrodes via the removable connector. The control unit is configured to monitor a sensed ECG of the patient, and responsive to a detection of cardiac arrhythmia, provide at least one defibrillating pulse to at least one of the therapy electrodes. The control unit is housed in a waterproof case formed from a waterproof material that is sealed to prevent ingress of water during operation in a wet environment.

Abstract: An anti-polish ring for an internal combustion engine is provided. The anti-polish ring includes an axially extending ring portion that is configured to scrape a top portion of a piston in a cylinder liner. The anti-polish ring is configured to accommodate passage of an intake or exhaust valve thereby. The anti-polish ring may include an alignment feature so that the anti-polish ring is inserted in a predetermined orientation in the cylinder. The anti-polish ring may include a heat shield and/or a seating member.

Abstract: A wearable medical device includes a waterproof harness, a plurality of ECG sensing electrodes configured to detect a patient's ECG, and a plurality of therapy electrodes configured to provide at least one biphasic shock to the patient. The device includes a control unit in electronic communication with the ECG sensing electrodes and therapy electrodes and configured to monitor the sensed ECG and, in response to detecting a cardiac arrhythmia, provide the biphasic shock(s). The control unit is comprised within a waterproof case. The device includes a water-resistant or waterproof connection pod that is configured to electrically couple the ECG sensing electrodes, therapy electrodes, and control unit. The connection pod provides the sensed ECG signal to the control unit and the biphasic shock current to the therapy electrodes. The device includes a user interface device in electronic communication with the control unit that includes at least one patient responsiveness button.

Abstract: A wearable defibrillator configured to provide changing alarms. The wearable defibrillator includes one or more physiological sensors including one or more ECG electrodes, one or more defibrillator electrodes, and a wearable medical device controller including a memory and at least processor coupled to the memory. The at least one processor is configured to monitor ECG signals from the one or more ECG electrodes, detect a cardiac abnormality in the patient based on the ECG signals, issue an alarm in response to detecting an event of interest, determine that no predetermined response to the issued alarm has been received, analyze information relating to historical alarms issued to the patient and historical patient responses to alarms stored in the memory to determine a patient tendency towards a particular alarm response pattern, and change the issued alarm according to the determined patient tendency towards the particular alarm response pattern.

Abstract: A wearable defibrillator includes one or more environmental sensors including an accelerometer, one or more ECG sensors configured to acquire ECG data, and an alarm manager and at least one processor operatively coupled to the one or more ECG sensors and the accelerometer. The at least one processor is configured to detect a cardiac abnormality in the patient, identify a notification having one or more characteristics, and detect an environmental condition of the wearable defibrillator. The accelerometer is configured to detect a presence or lack of patient motion, and/or detect a body position of the patient as the detected environmental condition. The at least one processor is configured to determine whether one or more factors exist that inhibit the patient's ability to recognize the notification, on determining their existence, adapt the one or more characteristics of the notification and provide an adapted notification, and issue the adapted notification.

Abstract: According to another example, a wearable medical device controller is provided. The device controller includes a memory and a processor coupled to the memory. The processor is configured to determine a correlation between a phenomenon identifiable by the wearable medical device controller and at least one response pattern associated with a patient and store, responsive to detecting the correlation, an adaptation path to address the at least one response pattern, the adaptation path specifying an adaptation of at least one characteristic of an alarm. The at least one response pattern may include a plurality of response patterns and the adaptation path may reflect adaptations made to address at least some of the plurality of response patterns.

Abstract: A wearable ambulatory external defibrillator system includes a garment configured to be worn by a patient and including electrocardiogram (ECG) sensing electrodes integrated into the garment, therapy delivery electrodes configured to deliver a therapy, and a wearable medical device controller including at least one processor. The at least one processor is configured to issue a first instance of an alarm in response to an indication of a cardiac abnormality and/or an event concerning one or more components of the system. The first instance of the alarm includes a visual alarm. The at least one processor is further configured to determine that no response to the first instance of the alarm was received within a target response time, adapt at least one characteristic of the alarm, and issue a second instance of the alarm having the at least one adapted characteristic. The second instance of the alarm includes an auditory alarm.

Abstract: An external wearable medical device includes an electrode to detect patient cardiac activity; a therapy electrode to provide a therapy in response to detecting an arrhythmia event; a GUI display comprising a caregiver interface and a patient interface; and a processor configured to provide, to the caregiver interface, a first set of information that includes information for operating the device in conjunction with the patient and an alert history of the device including an indication of one or more detected arrhythmia events, provide, to the patient interface, a second set of information that includes information for allowing the patient to cause the device to suspend providing the therapy and a direction to the patient to contact a caregiver responsive to detecting an event affecting at least one of the device and the patient, and responsive to detecting the event, automatically transmitting a notification of the event to an external entity.

Abstract: A medical device is disclosed that includes one or more treatment electrodes, one or more sensors, and one or more controllers connected to the one or more treatment electrodes and one or more sensors. The medical device also includes one or more response mechanisms connected to the one or more controllers. The one or more controllers are configured to receive input from the one or more response mechanism and are also configured to determine whether a patient wearing the medical device actuated the one or more response mechanisms based, at least in part, on the input received from the one or more response mechanisms. In some disclosed embodiments, the medical device is a wearable defibrillator.

Abstract: A wearable medical device includes a waterproof harness, a plurality of ECG sensing electrodes configured to detect a patient's ECG, and a plurality of therapy electrodes configured to provide at least one biphasic shock to the patient. The device includes a control unit in electronic communication with the ECG sensing electrodes and therapy electrodes and configured to monitor the sensed ECG and, in response to detecting a cardiac arrhythmia, provide the biphasic shock(s). The control unit is comprised within a waterproof case. The device includes a water-resistant or waterproof connection pod that is configured to electrically couple the ECG sensing electrodes, therapy electrodes, and control unit. The connection pod provides the sensed ECG signal to the control unit and the biphasic shock current to the therapy electrodes. The device includes a user interface device in electronic communication with the control unit that includes at least one patient responsiveness button.

Abstract: A wearable ambulatory external defibrillator system includes a garment configured to be worn by a patient and including electrocardiogram (ECG) sensing electrodes integrated into the garment, therapy delivery electrodes configured to deliver a therapy, and a wearable medical device controller including at least one processor. The at least one processor is configured to issue a first instance of an alarm in response to an indication of a cardiac abnormality and/or an event concerning one or more components of the system. The first instance of the alarm includes a visual alarm. The at least one processor is further configured to determine that no response to the first instance of the alarm was received within a target response time, adapt at least one characteristic of the alarm, and issue a second instance of the alarm having the at least one adapted characteristic. The second instance of the alarm includes an auditory alarm.

Abstract: A method of determining responsiveness of a patient wearing a wearable defibrillator configured to deliver therapy to the patient includes sensing an electrocardiogram signal of the patient wearing the wearable defibrillator via a plurality of ECG sensing electrodes, and determining whether a defibrillation treatment should be provided to the patient via at least one treatment electrode. The method includes causing a user interface to provide a patient prompt from the wearable defibrillator responsive to determining that the defibrillation treatment should be provided to the patient. The method includes receiving a first signal indicative of a first patient response within a time interval, receiving a second signal indicative of a second patient response within the time interval, and withholding the defibrillation treatment to the patient via the at least one treatment electrode in response to receiving both the first signal and the second signal within the time interval.

Abstract: A wearable medical device includes a water-resistant harness, and a plurality of ECG sensing electrodes and a plurality of therapy electrodes disposed on the harness. The plurality of therapy electrodes are configured to provide at least one defibrillating biphasic shock. The device includes a control unit comprised within a waterproof case. The control unit is configured to monitor ECG information of the patient based on a sensed ECG signal, and responsive to detection of a cardiac arrhythmia, provide the at least one defibrillating biphasic shock. The device includes a water-resistant or waterproof connection pod configured to electrically couple to the plurality of ECG sensing electrodes, the plurality of therapy electrodes, and the control unit, and to provide the sensed ECG signal from the plurality of ECG sensing electrodes to the control unit and the at least one defibrillating biphasic shock from the control unit to the plurality of therapy electrodes.

Abstract: A wearable defibrillator includes one or more environmental sensors including an accelerometer, one or more ECG sensors configured to acquire ECG data, and an alarm manager and at least one processor operatively coupled to the one or more ECG sensors and the accelerometer. The at least one processor is configured to detect a cardiac abnormality in the patient, identify a notification having one or more characteristics, and detect an environmental condition of the wearable defibrillator. The accelerometer is configured to detect a presence or lack of patient motion, and/or detect a body position of the patient as the detected environmental condition. The at least one processor is configured to determine whether one or more factors exist that inhibit the patient's ability to recognize the notification, on determining their existence, adapt the one or more characteristics of the notification and provide an adapted notification, and issue the adapted notification.

Abstract: An augmented-reality system for providing information relating to a wearable medical device and/or a patient wearing a medical device. An augmented-reality enabled computing device includes an image acquisition device, a user interface operatively coupled to the image acquisition device, the user interface configured to receive streaming images of a scene having one or more predetermined recognizable features, and a processor operably connected to the user interface. The processor is configured receive the streaming images, analyze the one or more predetermined recognizable features to determine a context of the scene, retrieve information relating to at least one of the medical device and the patient wearing the medical device, the information corresponding to the determined context of the scene, and augment the received streaming images with contextual information relating to at least one of the medical device and the patient wearing the medical device.

Abstract: According to another example, a wearable medical device controller is provided. The device controller includes a memory and a processor coupled to the memory. The processor is configured to determine a correlation between a phenomenon identifiable by the wearable medical device controller and at least one response pattern associated with a patient and store, responsive to detecting the correlation, an adaptation path to address the at least one response pattern, the adaptation path specifying an adaptation of at least one characteristic of an alarm. The at least one response pattern may include a plurality of response patterns and the adaptation path may reflect adaptations made to address at least some of the plurality of response patterns.

Abstract: According to another example, a wearable medical device controller is provided. The device controller includes a memory and a processor coupled to the memory. The processor is configured to determine a correlation between a phenomenon identifiable by the wearable medical device controller and at least one response pattern associated with a patient and store, responsive to detecting the correlation, an adaptation path to address the at least one response pattern, the adaptation path specifying an adaptation of at least one characteristic of an alarm. The at least one response pattern may include a plurality of response patterns and the adaptation path may reflect adaptations made to address at least some of the plurality of response patterns.

Abstract: An external wearable medical device includes an electrode to detect patient cardiac activity; a therapy electrode to provide a therapy in response to detecting an arrhythmia event; a GUI display comprising a caregiver interface and a patient interface; and a processor configured to provide, to the caregiver interface, a first set of information that includes information for operating the device in conjunction with the patient and an alert history of the device including an indication of one or more detected arrhythmia events, provide, to the patient interface, a second set of information that includes information for allowing the patient to cause the device to suspend providing the therapy and a direction to the patient to contact a caregiver responsive to detecting an event affecting at least one of the device and the patient, and responsive to detecting the event, automatically transmitting a notification of the event to an external entity.

Abstract: According to at least one aspect, an external medical device is provided. The external medical device includes at least one electrode to detect cardiac activity of a patient, a treatment component to provide a therapy to the patient based at least in part on the detected cardiac activity, a user interface including at least one caregiver interface and at least one patient interface, and a processor in communication with the user interface. The processor may be configured to provide a first set of information to the caregiver interface and a second set of information to the patient interface. The first set of information may include information for operating the external medical device in conjunction with the patient and the second set of information may include information for allowing the patient to cause the external medical device to suspend providing the therapy to the patient.

Abstract: A wearable medical device includes a water-resistant harness, and a plurality of ECG sensing electrodes and a plurality of therapy electrodes disposed on the harness. The plurality of therapy electrodes are configured to provide at least one defibrillating biphasic shock. The device includes a control unit comprised within a waterproof case. The control unit is configured to monitor ECG information of the patient based on a sensed ECG signal, and responsive to detection of a cardiac arrhythmia, provide the at least one defibrillating biphasic shock. The device includes a water-resistant or waterproof connection pod configured to electrically couple to the plurality of ECG sensing electrodes, the plurality of therapy electrodes, and the control unit, and to provide the sensed ECG signal from the plurality of ECG sensing electrodes to the control unit and the at least one defibrillating biphasic shock from the control unit to the plurality of therapy electrodes.