Abstract: Defibrillators, defibrillator architectures, defibrillator interface units and methods of operating defibrillators are described. In one aspect, a modular defibrillator architecture is described. A base unit provides a fully functional defibrillator. The functionality of the base unit can be supplemented by attaching an interface unit to the base unit. The defibrillator interface unit includes a housing, a communications module, a processing unit and a power storage unit. The housing is configured to be mounted on the base defibrillator unit to form at least a part of a unitary portable modular AED system. The communications module facilitates wireless communication between the AED and one or more remote servers. The processing unit includes at least one processor and is configured to receive communications from the base defibrillator unit. The power storage unit powers the interface unit including the communications module and the processing unit.

Abstract: AED pulse generation circuits that provide floating, adjustable, bias voltages for driving a solid-state defibrillation waveform therapy generator circuit are provided. The provided bias voltages allow to reverse polarity of provided electric shock to increase chances of successful defibrillation and survival. In one of the provided configurations, energy stored in the pulse capacitor can be discharged by activating the waveform therapy generator in the high-resistance transconductance region. The circuits can be positioned on a self-contained module potted with an insulating material to reduce unintended interactions with other AED components. Through the use of the disclosed circuits, AED size can be reduced to promote pocketability while simultaneously increasing AED reliability.

Abstract: The present invention relates to a lamp with a quick-release battery, which is technically characterized by including a lamp holder, a lamp body, and a battery pack. A battery compartment with an opening at one side and capable of allowing the battery pack to be inserted is arranged in the lamp holder, a sub-buckle is arranged on an end face of the battery pack, a clamping component capable of being clamped and mated with the sub-buckle is arranged on a corresponding side wall of the battery compartment, the clamping component includes a clamping box, a sliding block capable of sliding inside and outside is arranged in the clamping box, and an elastic female buckle capable of extending out or retracting into the clamping box and capable of being clamped and mated with the sub-buckle when retracting into the clamping box is arranged at an outer end of the sliding block.

Abstract: Status messages are wirelessly broadcast from medical devices (e.g., defibrillators) as advertisements that don't require the establishment of a wireless connection with listeners. The listeners are configured to act on, or forward received status messages as appropriate. The listeners may optionally include supplemental information supplied by the listener device when forwarding a status message to a management server. The listener may optionally analyze received status messages to determine whether an action should be taken based at least in part on status information in the message. Actions performed by the listener may include initiating a connection with the transmitting device to facilitate uploading new information from the defibrillator, updating the defibrillator's firmware, etc. Optionally, some of the advertisements are configured as beacons. The advertisements/beacons may be transmitted using a Bluetooth Low Energy or other suitable protocols.

Abstract: A system to deliver therapeutic energy to a patient, the system including a storage capacitor configured to store and release the therapeutic energy, a boost converter circuit coupled to the storage capacitor, and a current flow control circuit coupled to the boost converter circuit and including a plurality of control circuits configured to control a current output from the current flow control circuit in a therapeutic biphasic voltage waveform upon release of the therapeutic energy from the storage capacitor, wherein the therapeutic biphasic voltage waveform includes a ramped increase in voltage from approximately zero volts to a desired therapeutic voltage level over a time interval greater than 1 millisecond and less than a time associated with a phase switch.

Abstract: In one aspect, an example wearable cardioverter defibrillator (WCD) system implementing the disclosed techniques includes a support structure, the support structure configured to be worn by a subject. The WCD system also includes a consciousness detection module configured to determine whether the subject wearing the support structure is unconscious. The WCD system further includes an interactive bystander module configured to, responsive to a determination that the subject wearing the support structure is unconscious, generate a first voice prompt inquiring as to a presence of a bystander.

Abstract: A pocket size defibrillator case is described. The defibrillator case includes a circuit enclosure having a bottom surface surrounded by four walls forming a cavity to house an energy storage circuit. An electrode enclosure includes a bottom surface surrounded by four walls forming a cavity to house electrode pads and is stacked on top of the circuit enclosure. A cover includes a substantially flat surface positioned over the electrode enclosure and moveable to allow access only to the electrode enclosure.

Abstract: A leadless neurostimulation device having a header unit including at least one primary electrode having a contact surface that defines an external surface of the leadless neurostimulation device, a housing including a secondary electrode positioned on the same side of the leadless neurostimulation device as the at least one primary electrode, and a anchor device including at least one suture point for securing the leadless neurostimulation device to patient tissue or at least one protrusion nub configured to create mechanical resistance that impedes relative movement between wherein the leadless neurostimulation device and the patient tissue when implanted, where the at least one primary electrode and the secondary electrode are configured to transmit an electrical stimulation signal therebetween to provide electrical stimulation therapy to a target nerve of a patient.

Abstract: Systems to confirm authenticity of electrodes and to provide compatibility between a medical device and associated electrodes are described. The systems include an electrode connector that stores an authentication code that is accessible to the medical device when the electrode connector is coupled to the medical device. The medical device uses the authentication code to determine an authenticity of the coupled electrodes. The electrode connector also includes physical features of a housing that allow the electrode connector to couple to different versions (e.g., older and new models) of the type of medical device. This feature allows reverse compatibility of the electrode connector to different versions of medical devices.

Abstract: The present invention relates to a generator (G) for a substantially charge-balanced pulse for application onto at least one electrode pair (101) of a medical device, the generator comprising: a pulse-shaping output stage (POS) for coupling to the at least one electrode pair; an internal pulse generator for applying an internal pulse to the pulse-shaping output stage; wherein the pulse-shaping output stage comprises a transformer (T) and/or a capacitor system (CS) comprising at least one capacitor such that the internal pulse is transformed into a substantially charge-balanced pulse in the at least one electrode pair (I1) when coupled to the pulse-shaping output stage (POS). Further aspects relate to a catheter, a system, a method.

Abstract: A method of determining regularity of a bio-signal is provided. The method of determining regularity of a bio-signal according may include acquiring a plurality of pulse waveforms of the bio-signal, acquiring a plurality of slope waveforms corresponding to the plurality of pulse waveforms, binarizing the plurality of slope waveforms, acquiring synchronization information of the plurality of pulse waveforms based on binarizing the plurality of pulse waveforms; acquiring a synchronization rate of a reference interval based on the synchronization information, and determining whether the bio-signal is regular or irregular based on the synchronization rate of the reference interval.

Abstract: A shared resource medical system for monitoring a patient during emergency situations includes a primary medical device including a processor configured to wirelessly receive and transmit data, at least one secondary medical device communicatively coupled to the primary medical device and configured to collect physiological information from a patient, and transmit the physiological information to the primary medical device, and a remote computing device disposed at a location remote from the primary medical device and the at least one secondary medical device, wherein the primary medical device is configured to receive the physiological information from the at least one secondary medical device, and transmit the physiological information to the remote computing device, and wherein the remote computing device is configured to monitor the physiological information collected by the at least one secondary medical device.

Abstract: A wearable cardioverter defibrillator (WCD) comprises a plurality of electrocardiography (ECG) electrodes. An episode is opened responsive to a string of consecutive segments meeting one or more shock criteria, and a shockable rhythm is confirmed for the episode responsive to a subsequent string of consecutive segments meeting one or more confirmation criteria.

Abstract: Disclosed are a timeline-based navigation feature and a channel selection feature. The timeline-based navigation feature allows the user to visually identify significant events during an episode and quickly navigate the display of data to those significant events. Embodiments of such feature allow a user to quickly see that there is a shock delivered, for example, and click on that part of a timeline navigator to advance the detailed display of data to that point in the episode. The data channel selection feature enables selection of display channel(s) from among a set of available data channels. Embodiments of such feature enable a selection and/or deselection of various channels for display to minimize display of extraneous data and/or to select preferred channels of data for review.

Abstract: An external defibrillator for use in generating a defibrillation waveform is described. The external defibrillator includes a low voltage energy storage module having one or more low voltage ultra-capacitors that store low voltage energy. A pulse transformer converts the low voltage energy to high voltage defibrillation energy and provides the defibrillation energy to a pair of electrodes configured to be applied to a patient. A modulator receives the low voltage energy from the low voltage energy storage module and transfers the low voltage energy to the pulse transformer. The external defibrillator also includes a battery.

Abstract: Techniques and systems for monitoring cardiac arrhythmias and delivering electrical stimulation therapy using a subcutaneous implantable cardioverter defibrillator (SICD) and a leadless pacing device (LPD) are described. For example, the SICD may detect a tachyarrhythmia within a first electrical signal from a heart and determine, based on the tachyarrhythmia, to deliver anti-tachyarrhythmia shock therapy to the patient to treat the detected arrhythmia. The LPD may receive communication from the SICD requesting the LPD deliver anti-tachycardia pacing to the heart and determine, based on a second electrical signal from the heart sensed by the LPD, whether to deliver anti-tachycardia pacing (ATP) to the heart. In this manner, the SICD and LPD may communicate to coordinate ATP and/or cardioversion/defibrillation therapy. In another example, the LPD may be configured to deliver post-shock pacing after detecting delivery of anti-tachyarrhythmia shock therapy.

Abstract: A system and method for measuring, monitoring and mitigating EMI interference in an implanted stimulation lead system associated with an IPG. A Kelvin connection scheme operative with a diagnostic circuit is provided for sensing an interference voltage induced at a Kelvin connect electrode of the lead system, wherein the diagnostic circuit is configured to generate one or more control signals for adjusting in substantially real time a common-mode voltage reference provided to supply a biasing voltage to the IPG circuitry.

Abstract: A control apparatus for an implantable heart pump is provided, which comprises an implantable first control unit, which is electrically connected to the heart pump in a main operating state for controlling operating parameters of the heart pump. The control apparatus also comprises an interface, which is electrically connected to the first control unit and is intended to wirelessly transcutaneously transmit data and/or to wirelessly transcutaneously transmit energy between the first control unit and a further control unit provided for extracorporeal use. The control apparatus also comprises an implantable second control unit, which is electrically connected to the heart pump in an auxiliary operating state for controlling operating parameters of the heart pump, and an implantable switch, which is electrically connected to the first control unit and the second control unit. The switch is set up to change over between the main operating state and the auxiliary operating state.

Abstract: A method for determining respiratory rate from an audio respiratory signal comprising capturing the audio respiratory signal generated by a subject using a microphone. The method also comprises segmenting the audio respiratory signal into a plurality of overlapping frames. For each frame of the plurality of overlapping frames, the method comprises extracting a signal envelope, computing an auto-correlation function, computing an FFT spectrum from the auto-correlation function and computing a respiratory rate of the subject using the FFT spectrum.

Abstract: A wearable defibrillator for monitoring treatable arrhythmias in a patient in the presence of background noise includes a plurality of sensing electrodes configured to generate ECG data, one or more therapy pads, one or more audio devices, and one or more processors. The one or more audio devices include a microphone configured to detect background noise and a speaker. The one or more processors are configured to determine, from at least the ECG data, whether the patient is experiencing a treatable arrhythmia; cause, via the speaker, an audible alarm in response to determining that the patient is experiencing the treatable arrhythmia; delay a delivery of treatment to the patient in response to determining that at least the predetermined level of background noise exists; and during the delay, perform at least one of obtaining additional data or running an additional test to verify that the patient is experiencing the treatable arrhythmia.

Abstract: In one embodiment, a method to alert a user of a wearable cardioverter defibrillator (WCD) is described. The method includes detecting a condition requiring attention of the patient and issuing an alert to notify the patient of the condition. The method also includes receiving a first input from the patient to replay the audible portion of the alert and replaying the audible portion of the alert when the first input is received.

Abstract: An example medical device system includes therapy delivery circuitry configured to deliver anti-tachycardia pacing (ATP) therapy to a heart of a patient via electrodes communicatively coupled to the therapy delivery circuitry. The ATP therapy includes one or more ATP trains. The medical device system also includes processing circuitry configured determine a first propagation time based on a comparison of features in a local electrogram and a far-field electrogram, such as the time from a fiducial point in the local electrogram and QRS onset in the far-field electrogram. The processing circuitry is also configured to determine, based on the first propagation time, a number of pulses to achieve a second propagation time and control the therapy delivery circuitry to deliver the ATP train of at least the number of pulses.

Abstract: An implantable device containing a plurality of batteries, the plurality of batteries including at least one first non-rechargeable battery, and at least one second rechargeable battery. A method for providing power for a Cardiac Contractility Modulation Implantable Cardioverter Defibrillator (ICD) device, the method including providing power for cardioversion or defibrillation operation by a first, non-rechargeable battery, and providing power for Cardiac Contractility Modulation operation by a second, rechargeable battery. A method for controlling power for an implantable device having a rechargeable battery, a non-rechargeable battery and a Cardioverter Defibrillator module, the method including measuring electric power level of the rechargeable battery, comparing the rechargeable battery level to a threshold, if the electric power level of the rechargeable battery is less than the threshold, then providing power for the device from the non-rechargeable battery.

Abstract: The present disclosure relates generally to a defibrillator assembly comprising a defibrillator having a first operating mode for delivering a high energy output to a patient and a second operating mode for monitoring the patient, a first battery unit operably coupled to the defibrillator, and a second battery unit operably coupled to the defibrillator. One of the first battery unit and the second battery unit provides power to the defibrillator during the second operating mode. Both the first battery unit and the second battery unit provide power to the defibrillator during the first operating mode.

Abstract: A medical device management system includes a plurality of medical devices associated with a common administrator and comprising at least one defibrillator/monitor, wherein the plurality of medical devices comprise previously stored configuration information and a central server comprising a configuration information database and configured to communicatively couple to the plurality of medical devices via a long-range wireless connection, push administrator-selected configuration information updates to the plurality of medical devices associated with the common administrator, wherein the plurality of medical devices are configured to communicatively couple with the central server via the long-range wireless connection, receive the pushed administrator-selected configuration information, and update the previously stored configuration information according to the pushed administrator-selected configuration information.

Abstract: Wearable, automatic external, and implantable defibrillators, as well as methods of operation in such systems, are disclosed with shock delivery mitigations to avoid delivering a defibrillation shock on a T-wave. Prior to issuance of a defibrillation shock, one or more detected cardiac events are analyzed to characterize a detected event that is sensed for purposes of synchronizing the defibrillation shock. The detected event can be characterized as an R-wave or a T-wave, and the shock delivery protocol is then selected based on the characterization of the detected event to avoid shock-on-T and potential pro-arrhythmia.

Abstract: A medical device can include a housing, an energy storage module within the housing to store an electrical charge, and a defibrillation port to guide via electrodes the stored electrical charge to a person in need of medical assistance. The medical device can also include a processor to analyze patient physiological signal(s) that indicate heart viability. Positive measures of heart viability measures can qualify the patient for a customized treatment paradigm.

Abstract: The device has a device body with a front face at its distal end, and a means for the anchoring of the medical device to a patient's organ wall. The anchoring means includes a screw with a helix wire wound into a plurality of non-contiguous turns, the screw having a clamped end integral with the front face of the device body and a free end with a beveled end defined by at least one oblique surface. The helix wire includes, at its free distal end, a terminal region whose wire bending stiffness is lower than in a proximal region of the helix turns. The stiffness difference may, in particular, be obtained by varying the wire diameter over different successive portions, with decreasing diameters in a proximal to distal direction.

Abstract: An external defibrillator system includes one or more compression sensors; one or more physiological sensors; and at least one processor. The at least one processor is configured to: receive and process chest compression signals and physiological signals from the sensors, determine values for chest compression depth and/or chest compression rate based on the received chest compression signals, determine a trend of at least one physiological parameter over a period comprising multiple chest compressions based on the received physiological signals, adjust a target chest compression depth and/or target chest compression rate based on the determined trend of the at least one physiological parameter, compare the determined values for chest compression depth and/or chest compression rate to the adjusted target compression depth and/or the adjusted target compression rate, and provide feedback about the quality of chest compressions performed on the patient.

Abstract: Systems and methods for identifying one or more P-waves in real-time are disclosed. Exemplary implementations may: receive a plurality of signals from an ECG lead configured to be connected with a patient; determine a noise level of the plurality of signals during a pre-determined time interval; identify a plurality of QRS-complex candidates from the received plurality of signals; extract one or more features from each QRS-complex candidate based on the determined noise level of the plurality of signals; cluster, based on the extracted one or more features from each QRS-complex candidate, the plurality of QRS-complex candidates; and identify one or more P-waves from the clustered plurality of QRS-complex candidates. Based on the identified one or more P-waves, a heart block event can be detected.

Abstract: Systems and methods of arrhythmia detection and associated apparatus that utilize machine learning techniques that allow for the consideration individual characteristics and the tailoring/personalization of biometric data allow for early detection and treatment, especially of cardiac arrhythmias and other abnormalities.

Abstract: A method includes charging a capacitor of a power inverter to a direct current (DC) input voltage from an input terminal of the power inverter. The capacitor has first and second terminals. The method also includes providing a first voltage at an output terminal of the power inverter at a first time by controlling one of either: an output switch that selectively couples the output terminal to either the first terminal or the second terminal; or a set of input switches that selectively couple the first and second terminals to either the input terminal or a ground terminal. The method further includes providing a second voltage at the output terminal at a second time by controlling the other of the output switch or the set of input switches.

Abstract: Various embodiments are directed to battery packs for use with surgical instruments. The battery packs may comprise a plurality of cells and at least a portion of the plurality of cells may not be electrically connected to one another. The battery packs may comprise a switch or other mechanism for interconnecting the plurality of cells and may also comprise, or be used in conjunction with, a discharge switch or plug configured to electrically connect an anode of the battery pack to a cathode of the battery pack, for example, via a resistive element.

Abstract: Augmented, virtual, and/or mixed reality applications in optimizing a fitting process and a fit of wearables, including wearable cardioverter defibrillators, to a wearer's body.

Abstract: A system comprising: a wrist-worn device configured to be worn on the wrist of a rescuer performing cardiopulmonary resuscitation (CPR), the wrist-worn device including: one or more sensors coupled with the wrist-worn device, the one or more sensors being configured to sense one or more parameters indicative of a fatigue level of the rescuer; and a sensor interface configured to provide the sensed parameters to one or more external computing devices via an interface; and a wearable computing device configured to be worn by a rescuer, the wearable computing device including: a device interface for receiving information related to CPR; and a display for displaying an indication of the received information.

Abstract: A programmer configured to collect data from an implantable pulse generator about ongoing neurostimulation being applied during a stimulation titration process by the implantable pulse generator while in communication with the communication circuitry; display, via a user interface, an indication relating to a timing of neurostimulation bursts applied by the implantable pulse generator while in communication with the communication circuitry based on the collected data, the indication being displayed according to a time delay that accounts for a transport delay between the implantable pulse generator and the programmer such that the indication displayed coincides with an actual application of each stimulation burst by the implantable pulse generator; and adjust at least one stimulation parameter applied during the stimulation titration process by the implantable pulse generator.

Abstract: According to an embodiment, a wearable electronic device may include at least two electrodes for measuring a biometric signal, a living body contact detecting unit configured to apply a voltage to at least one electrode contacting a living body among the at least two electrodes and output information indicating an operation state for biometric signal measurement of the wearable electronic device based on a voltage output from the at least one electrode, and a processor configured to determine the operation state for biometric signal measurement of the wearable electronic device, based on the information received from the living body contact detecting unit. Various other embodiments may be provided.

Abstract: 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.

Abstract: A communications module adapted for use with a defibrillator, comprising a power supply system configured to supply power to the communications module, a power connector adapted for connection to the defibrillator to provide power from the communications module to the defibrillator, a power switch connected between the power supply system and the power connector to transmit power from the power supply system to the power connector, a data connector adapted for connection to the defibrillator to transfer defibrillator data between the defibrillator and the communications module, and a processor configured to control the power switch to provide power from the communications module to the defibrillator to enable the transfer of the defibrillator data between the defibrillator and the communications module.

Abstract: 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.

Abstract: An example of a system for post-case analysis of cardiopulmonary resuscitation (CPR) performance trends includes a ventilation metrics device with sensors configured to generate signals indicative of ventilation treatment data during a medical treatment of a patient, and a patient monitor/defibrillator configured to receive the signals, calculate the ventilation treatment data based on the received signals, and transmit the ventilation treatment data, and a remote computing device configured to communicatively couple with the treatment monitoring system and with an output display device, the computing device including at least one memory and at least one processor communicatively coupled to the memory, the at least one processor configured to receive treatment data from the treatment monitoring system, the treatment data including the ventilation treatment data, and provide case review information at a case review dashboard at the output device, the case review information including time trend plots of the ve

Abstract: A system and method for managing defibrillators and for coordinating their use during the SCA event to increase the probability of survival for the person experiencing sudden cardiac arrest. Defibrillator monitoring units and direction prompters are installed at registered geographical locations. A defibrillator monitoring unit closest to a cardiac arrest event is identified and a subset of the one or more client devices proximate event are sent an assistance request. One of the devices sends an accept message indicating acceptance of the request an activation message is sent to the subject client device to initiate transmission of active beacon signals by the device to activating at least one of the direction prompters so as to provide geographical direction to the identified defibrillator monitoring unit or audio/visual indicators associated with the identified defibrillator monitoring unit.

Abstract: The device, such as an autonomous cardiac implant of the leadless capsule type, has a device body with a means for its anchoring to a patient's organ wall. The anchoring means includes a screw with a helix wire wound into a plurality of non-contiguous turns, the screw having a clamped end integral with the front face of the device body and a free end with a beveled end defined by at least one oblique surface. The normal to the oblique surface of the beveled end is directed away from the front face, in such a way that the oblique surface is directed towards the patient's organ wall. The normal to the oblique surface forms an angle between 30° and 60° with respect to the helix axis, and the screw is elastically deformable in axial compression, with a stiffness coefficient of at most 5 N/mm.

Abstract: A medical device for review of clinical data in a playback mode is described. The medical device includes at least one output device comprising at least one display screen, at least one memory, and at least one processor coupled to the at least one memory and the at least one output device, the at least one processor configured to receive signals indicative of patient data from one or more patient interface devices communicatively coupled to the medical device, control the at least one display screen to provide a first visual representation of the patient data as an operational interface, and selectively display a playback interface at the at least one display screen wherein the playback interface enables user interactive review of the patient data based on a second visual representation of the patient data.

Abstract: A neutral electrode (12) is formed on the patient (11) in that an electrically conductible mass that can solidify is applied on the skin of the patient (11). An electrically conductible inlay (17) can be arranged on or embedded in the forming electrode body (16) prior, during or after the application of the mass, the inlay (17) is or can be connected with the neutral electrode connection cable (13). The inlay (17) serves to electrically contact the electrode body (16) in a large area that in turn establishes a reliable electrical contact to the patient (11).

Abstract: A disaster preparation system may include a system controller, including a device processor, and a non-transitory computer readable medium including instructions executable by the device processor to perform the following steps: receiving location data from a personal electronic device of a user; receiving forecast data regarding a predicted disaster; making a determination of a preparatory action to be executed based on the location data and the forecast data; and executing the preparatory action at a predetermined time relative to the predicted time of the disaster. The computer readable medium may further include instructions for receiving vacancy data from a storage facility. In addition, the preparatory action may include coordinating an order of a moving service to move the user's belongings, and coordinating the order of the moving service may include determining a size of a moving vehicle based on the vacancy data received from the storage facility.

Abstract: A leadless neurostimulation device including a header unit having at least one primary electrode having a contact surface that defines an external surface on a side of the device, an outer housing that forms a side of the header unit opposite of the contact surface of the primary electrode, and a dielectric mount that receives at least a portion of the primary electrode and at least partially surrounds the primary electrode, the dielectric mount being configured to electrically insulate the primary electrode from the outer housing, the dielectric mount being received and fixed within a recessed portion of the outer housing, and a housing having a secondary electrode positioned on the same side of the leadless neurostimulation device as the primary electrode, the primary electrode and the secondary electrode being configured to transmit an electrical stimulation signal therebetween to provide electrical stimulation therapy to a tibial nerve of a patient.

Abstract: Automated external defibrillator systems including an automated external defibrillator and a charging device. The automated external defibrillator includes a countercheck device and a single treatment battery. The countershock device is configured to deliver automated external defibrillation treatment to a person. The single treatment battery is electrically coupled to the countershock device and has a power storage capacity selected to store power sufficient for the countershock device to operate for a single treatment scenario. The charging device is configured to couple to the single treatment battery and to transfer power to the single treatment battery for the single treatment battery to store. In some examples, the automated external defibrillator system includes a housing.

Abstract: An ambulatory medical device includes two or more response mechanisms; a memory storing an active operation mode parameter identifying an active operation mode from a plurality of operation modes; a controller connected with the two or more response mechanisms; and a therapy manager component executable by the controller and configured to identify the active operation mode, detect a physiological parameter indicative of a health disorder of the patient, request that the patient change the state of one of the two or more response mechanisms in response to detection of the physiological parameter, monitor the state of each of the two or more response mechanisms within a first predetermined period, and delay therapy to the patient in response to detection of a first change in the state of one of the two or more response mechanisms within the predetermined period and identification of a first mode as the active operation mode.

Abstract: Methods, user interfaces and systems are described that enable responder preferences to be considered during deployment of a public responder network. In various embodiments, a user is able to select or define an area for which incident notifications are desired or are to be restricted in some manner. The described approach is well suited for public responder networks that include medical devices such as defibrillators (e.g., AEDs) in the network.