A system including a medical device is provided. The medical device includes at least one sensor configured to acquire first data descriptive of a patient, first memory storing a plurality of templates, and at least one processor coupled to the at least one sensor and the first memory. The at least one processor is configured to identify a first template of the plurality of templates that is similar to the first data, to determine first difference data based on the first template and the first data, and to store the first difference data in association with the first template. The system may further include the programmable device.

In an implanted medical device system, an internal controller, external power transmitter and methods for performing battery conditioning are disclosed. According to one aspect, an internal controller includes processing circuitry configured to cause conditioning of an internal battery of the internal controller responsive to a direction from an external power transmitter in radio communication with the internal controller.

A Wearable Cardioverter Defibrillator (WCD) system has a processor that performs two different analyses to an ECG of the patient. A first-level analysis can be computationally economical, while a fuller second-level analysis can give shock/no-shock advice with more certainty. In some of these embodiments the second-level analysis of the ECG is performed only if the first-level analysis of the ECG detects a possible shockable condition. As such, the first-level analysis may operate as a gatekeeping function, often preventing the more computationally intensive second-level analysis from being performed. An advantage can be that the WCD system needs to store less charge, for powering the processor. In turn, this permits portions of the WCD system to be less bulky and weigh less.

In embodiments a WCD system is worn and/or carried by an ambulatory patient. The WCD system analyzes an ECG signal of the patient, to determine whether or not the patient should be given an electric shock to restart their heart. If so, then the WCD system first gives a preliminary alarm to the patient, asking them to prove they are alive if they are. The WCD system further determines whether the ECG signal contains too much High Amplitude (H-A) noise, which can distort the analysis of the ECG signal. If too much H-A noise is detected for a long time, the WCD system may eventually alert the patient about their activity, so that the ECG noise may be abated. The WCD system may even pause the analysis of the ECG signal, so that there will be no preliminary alarms that could be false until the ECG noise is abated.

A personal wearable emergency medical treatment device, including: a first housing unit including an control unit for an automatic defibrillator device; at least two, and preferably three, electrodes in electrical communication with the housing unit; wherein the electrodes are adapted to be positioned in proximity to a human body at preselected positions selected for monitoring for heartbeat abnormalities and providing electric pulses to the human body.

In some examples, an ambulatory medical device is provided. The ambulatory medical device includes at least one sensor configured to acquire data descriptive of the patient, one or more processors in communication with the at least one sensor, a patient care component executable by the one or more processors, and a limited functionality component executable by the one or more processors. The patient care component is configured to perform one or more primary operations of the ambulatory medical device at least in part by accessing the data descriptive of the patient. The limited functionality component is configured to exchange information with a communication device and to not affect the one or more primary operations of the ambulatory medical device.

A variety of electrode pad cartridges are described that are suitable for use with a defibrillator. In one aspect the cartridge includes a housing and a tray that carries a pair of defibrillation electrode pads. At least a portion of the tray is slidably received within the cartridge housing such that the electrode pads are received within the housing. The tray is configured to be slidably pulled from the cartridge housing while the housing remains attached to the defibrillator to provide access to the electrode pads to facilitate use of the defibrillator.

Embodiments of this disclosure are directed to a wearable cardioverter defibrillator (“WCD”) system design in which a WCD implements an alert prioritization scheme to provide the patient with feedback in an order that is less likely to cause confusion. Different conditions (e.g., device status, equipment condition, or physiologic condition) are prioritized based on an analysis of severity of the condition and timeliness of user action needed. The prioritization scheme defines what alert, if any, is presented to the user by the WCD system as a result of various conditions. Generally stated, an alert for the highest priority condition currently detected is presented to the user and maintained until that condition either changes or becomes surpassed in the prioritization scheme.

Technologies and implementations for a wearable healthcare system having an irremovable wirelessly chargeable energy storage device. The technologies and implementations facilitate at least continual monitoring.

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.