Abstract: An emergency or medical package comprising has: a body; attachment fittings, for attachment to complementary fittings of a UAV; and a plurality of compartments for housing medical or emergency supplies, including a compartment for a headset, providing two-way communication between a user of a headset and a person remote from the package, wherein the headset includes at least one camera, providing a video feed, that is sent to a remote person. A method of delivering these supplies and providing control over the use of the supplies provides two-way audio and visual communication between a remote person and the user wearing the headset, whereby the remote person can provide instructions and directions to the user. A method of planning a route for the delivery of a medical or emergency package by UAV, and a method for providing for a delivery of a priority package are also provided.

Abstract: It has been discovered that pain felt in a given region of the body can be treated by stimulating a peripheral nerve at a therapeutically effective distance from the region where pain is felt to generate a comfortable sensation (i.e., paresthesia) overlapping the regions of pain. A method has been developed to reduce pain in a painful region following limb joint replacement by stimulating a peripheral nerve innervating the painful region with an electrode inserted into tissue and spaced from the peripheral nerve. This method may be used to help alleviate postoperative pain in patients following total knee arthroplasty surgery or other limb joint replacement surgeries.

Abstract: Systems and methods for detecting slow and persistent rhythms, such as indicative of ventricular response to atrial tachyarrhythmia (AT), are described herein. An arrhythmia detection system monitors patient ventricular heart rate, and identifies slow heart beats with corresponding heart rates falling below a rate threshold during a detection period. The system identifies one or more sustained slow beat (SSB) sequences each including two or more slow heart beats. The system determines a first prevalence indicator of the identified slow heart beats, and a second prevalence indicator of the identified SSB sequences during the detection period. An arrhythmia detector circuit detects a slow and persistent rhythm using the first and second prevalence indicators.

Abstract: A patient monitoring device is described that includes a wireless transceiver, an asset management database, and a processor communicably coupled to the wireless transceiver and the asset management database and configured to receive patient monitoring information gathered by the patient monitoring device, format the patient monitoring information into a plurality of frames, each frame of the plurality of frames associated with an incident identifier that identifies an emergency medical services (EMS) incident during which the patient monitoring information was gathered, store the plurality of frames to the asset management database, separately retrieve one or more frames of the plurality of frames from the asset management database based on the incident identifier, and provide one or more retrieved set of one or more frames to the wireless transceiver for transmission.

Abstract: An electrical feedthrough assembly for an implantable medical device includes an outer ferrule of metallic material having an outer surface hermetically sealed to an implantable device housing. There is an inner feedthrough assembly which is hermetically sealed within the ferrule and which has a structure of sintered layers that include: i. an electrical insulator of ceramic insulator material, ii. one or more electrically conductive vias of metallized conductive material embedded within and extending through the electrical insulator, and iii. a transition interface region around each of the conductive vias comprising a gradient mixture of the ceramic insulator material and the metallized conductive material forming a gradual transition and a mechanical bond between the electrical insulator and the conductive via.

Abstract: Several defibrillators, defibrillator architectures, defibrillator components 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 or by connecting a smartphone the base unit. Such devices provide connectivity as well as a screen for displaying supplementary graphics and/or videos which are useful to support both emergency and maintenance & monitoring activities. In some embodiments a battery pack may also or alternatively be coupled to the base unit to prolong the unit's shelf life before recharging or replacement of its batteries is required. If necessary the base unit can be powered from a connected external device such as a mobile communication device.

Abstract: Methods and apparatus for a three-stage atrial cardioversion therapy that treats atrial arrhythmias within pain tolerance thresholds of a patient. An implantable therapy generator adapted to generate and selectively deliver a three-stage atrial cardioversion therapy and at least two leads, each having at least one electrode adapted to be positioned proximate the atrium of the patient. The device is programmed for delivering a three-stage atrial cardioversion therapy via both a far-field configuration and a near-field configuration of the electrodes upon detection of an atrial arrhythmia. The three-stage atrial cardioversion therapy includes a first stage for unpinning of one or more singularities associated with an atrial arrhythmia, a second stage for anti-repinning of the one or more singularities, both of which are delivered via the far-field configuration of the electrodes, and a third stage for extinguishing of the one or more singularities delivered via the near-field configuration of the electrodes.

Abstract: Methods and apparatus for a three-stage ventricular cardioversion and defibrillation therapy that treats ventricular tachycardia and fibrillation at low energy levels. An implantable therapy generator adapted to generate and selectively deliver a three-stage ventricular therapy and at least two leads operably each having at least one electrode adapted to be positioned proximate the ventricle of the patient. The device is programmed to deliver a three-stage therapy via both a far-field configuration and a near-field configuration of the electrodes upon detection of a ventricular arrhythmia. The three-stage therapy includes a first stage for unpinning of one or more singularities associated with the ventricular arrhythmia, a second stage for anti-repinning of the one or more singularities, both of which are delivered via the far-field configuration of the electrodes, and a third stage for extinguishing of the one or more singularities associated delivered via the near-field configuration of the electrodes.

Abstract: Several defibrillators, defibrillator architectures, defibrillator components 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 or by connecting a smartphone the base unit. Such devices provide connectivity as well as a screen for displaying supplementary graphics and/or videos which are useful to support both emergency and maintenance & monitoring activities. In some embodiments a battery pack may also or alternatively be coupled to the base unit to prolong the unit's shelf life before recharging or replacement of its batteries is required. If necessary the base unit can be powered from a connected external device such as a mobile communication device.

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 physiological information processing apparatus includes an acquiring section that acquires physiological information of a subject, a classifying section that classifies the physiological information that is acquired by the acquiring section, and an analyzing section that selects an algorithm from a plurality of algorithms according to a result of the classification performed by the classifying section, and that analyzes the classified physiological information by using the selected algorithm.

Abstract: This disclosure is directed to techniques for identifying false detection of asystole in a cardiac electrogram that include determining whether at least one of a plurality of false asystole detection criteria are satisfied. In some examples, the plurality of false asystole detection criteria includes a first false asystole detection criterion including a reduced amplitude threshold for detecting cardiac depolarizations in the cardiac electrogram, and a second false asystole detection criterion for detecting decaying noise in the cardiac electrogram.

Abstract: A system for managing care of a person receiving emergency cardiac assistance is disclosed that includes one or more capacitors for delivering a defibrillating shock to a patient; one or more electronic ports for receiving signals from sensors for obtaining indications of an electrocardiogram (ECG) for the patient; a patient treatment module executable on one or more computer processors to provide a determination of a likelihood of success from delivering a future defibrillating shock to the person with the one or more capacitors, using (a) information about a prior defibrillating shock, and (b) a value that is a function of current ECG signals from the patient.

Abstract: In embodiments, a wearable medical (WM) system includes ECG electrodes, and a support structure that can be worn by an ambulatory patient so as to maintain the ECG electrodes on the patient's body. When thus maintained, the ECG electrodes can be configured to sense an ECG signal of the ambulatory patient. The WM system further includes a memory that stores a reference template, and an output device. The reference template can be made from one or more early portions of the ECG signal of the patient. Then later portions of the ECG signal are sensed and compared against the reference template, to determine if there is a specific problem. If it is so determined, the output device can output an alert.

Abstract: The present invention provides both methods and devices for termination of arrhythmias, such as ventricular or atrial tachyarrhythmias. The device and method involves application of alternating current (AC) for clinically significant durations at selected therapeutic frequencies through the cardiac tissue to a subject experiencing arrhythmia. Methods are also provided to minimize or eliminate pain during defibrillation.

Abstract: Systems and methods related to the field of cardiac resuscitation, and in particular to devices for assisting rescuers in performing cardio-pulmonary resuscitation (CPR) are described herein. The system includes an applicator device configured to provide ACD CPR treatment to a patient's chest according to a plurality of phases at least one sensor configured to be coupled to the patient's chest and to measure at least one parameter related to the ACD CPR treatment and information for determining whether at least one transition point of the ACD CPR treatment has been reached; and one or more processors configured to provide a feedback signal based on a parameter for administering ACD CPR treatment to the patient's chest according to a desired treatment protocol.

Abstract: Methods and devices include making an incision at a single site of a patient. The single site located at an anterior of a chest or abdomen. The method also includes inserting a tunneling tool through the incision at the single site and preparing a first tunnel to a subcutaneous posterior location. A path of the first tunnel at least one of i) extends over a plurality of Intercostal gaps of the chest or ii) extends along and within one of the intercostal gaps. The method also includes positioning a first lead having an electrode within the first tunnel and preparing a second tunnel to a subcutaneous parasternal location along the chest. The method also includes positioning a second lead having an electrode within the second tunnel and positioning a pulse generator within a subcutaneous pocket and operatively coupling the first and second leads to the pulse generator.

Abstract: A device, such as an IMD, having a tissue conductance communication (TCC) transmitter controls a drive signal circuit and a polarity switching circuit by a controller of the TCC transmitter to generate an alternating current (AC) ramp on signal having a peak amplitude that is stepped up from a starting peak-to-peak amplitude to an ending peak-to-peak amplitude according to a step increment and step up interval. The TCC transmitter is further controlled to transmit the AC ramp on signal from the drive signal circuit and the polarity switching circuit via a coupling capacitor coupled to a transmitting electrode vector coupleable to the IMD. After the AC ramp on signal, the TCC transmitter transmits at least one TCC signal to a receiving device.

Abstract: The present disclosure describes systems, apparatus, and methods for collecting biometric data from a patient. In some cases, this biometric data can be collected during the course of an emergency encounter using a medical device. The medical device can also perform other functions, such as monitor patient vital signs, receive and record notes and textual information, communicate with other devices, and/or deliver a therapeutic treatment. The medical device can also be configured to record and/or maintain a patient record, and to embed the patient biometric data into the patient record for use in later confirming and/or determining an identity of the patient. Some embodiments can also collect biometric data relating to one or more caregivers of the patient, and to embed the caregiver biometric data into the patient record. This caregiver biometric data can be used to confirm and/or identify one or more caregivers in a patient record.

Abstract: Systems and methods according to one or more embodiments are provided for sensing a current at an output of a switching amplifier. In one example, a system includes a first transistor switch coupled to a load configured to conduct a current in the load responsive to a first pulse width modulated control signal coupled to a gate terminal of the first transistor switch. The system further includes a second transistor switch configured to conduct the current in the load responsive to a second pulse width modulated control signal coupled to a gate terminal of the second transistor switch. A shielding switch is coupled between the load and a current sensing circuit, wherein the shielding switch is configured to provide a small signal voltage to the current sensing circuit in response to the second pulse width modulated control signal, the current sensing circuit is configured to sense the current traveling through the load responsive to the small signal voltage.

Abstract: The present invention relates to a method for operating a data processing unit of a ventilation device, and also to a ventilation device. Therapy data are registered and stored in a memory unit and at least a part of the therapy data is transmitted with a transmission unit to a network. At least one available radio network is determined with the transmission unit and at least one parameter for a network quality of the network is defined. At least one processing of the therapy data prior to their transmission into the radio network is carried out dynamically with the data processing unit depending on the parameter.

Abstract: An apparatus comprises an external device for communication with an implantable device. The external device includes a communication circuit configured to receive a communication signal from at least one other device different from the implantable device, a locating circuit configured to determine a location of the external device using the received communication signal, and a control circuit electrically coupled to the communication circuit and the locating circuit. The control circuit is configured to determine whether the determined location imposes a limit on functionality of an implantable device, and provide user access to an implantable device feature according to the determined location.

Abstract: The present invention is directed toward a detection architecture for use in implantable cardiac rhythm devices. The detection architecture of the present invention provides methods and devices for discriminating between arrhythmias. Moreover, by exploiting the enhanced specificity in the origin of the identified arrhythmia, the detection architecture can better discriminate between rhythms appropriate for device therapy and those that are not.

Abstract: A defibrillation training system, enabling the use of a live defibrillation unit (2), comprising a module (3) and a cable (1) interconnecting said module (3) and said defibrillation unit (2). The cable (1) being a resistance cable that has an impedance that simulates patent impedance and absorbs electric shock pulses made by said defibrillator unit (2).

Abstract: A portable emergency or medical package has: a body; a plurality of compartments for housing medical supplies, and a compartment for communication device, providing real time two-way communication between a user of the package and a communication appliance remote from the package, wherein the communication device is detachable from the remainder of the package. A method of delivering a package of emergency or medical supplies to a desired location provides control over the use of the medical supplies by a remote person. At the desired location, a user is instructed to remove the communication device from the package, which enables the provision of real time two-way audio communication between a remote person and the user and at least one way video communication to the remote person, whereby the remote person can provide instructions and directions to the user.

Abstract: A device for supporting determination of return of spontaneous circulation, ROSC, during an associated cardiopulmonary resuscitation, CPR, procedure which is being performed on an associated patient. A sensor is used to sense a physiological signal of the patient. Frequency analysis of the signal is carried out to extract dominant fundamental frequency components in the signal. From this analysis it is possible to determine that there has been a potential ROSC.

Abstract: Dual sequential defibrillation (DSD) systems and methods include the use of a timing device. The timing device can assist a user with DSD administration by providing notifications spaced apart by the inter-shock timing. The user can use these notifications to trigger the administration of defibrillation in a sequential manner. The timing device can also be coupled to two defibrillation devices and can output a signal to each of the defibrillation devices to cause the defibrillation device to administer a defibrillation. The output of the signals by the timing device can be spaced apart by the inter-shock timing. Additionally, the signals can be QRS-like in nature to cause the defibrillation devices to administer a defibrillation when in a sync mode.

Abstract: Technologies and implementations for a defibrillator electrode having communicative capabilities are generally disclosed.

Abstract: The present disclosure generally relates to managing user interfaces associated with physical activities. The user interface displays a scrollable list of affordances associated with physical activities. The affordances may contain physical activity and heart rate information. A user can launch a physical activity tracking function or an interface to change a workout metric using an affordance. Users can also control the music that is played in response to selecting a workout. Further, the interface can be used to compose a reply message to a received message that contains workout information. The interfaces can show a graph that includes heart data when the user's heart rate meets a heart rate alert criteria.

Abstract: Ambulatory medical devices may occasionally improperly administer a therapeutic stimulation pulse to a patient upon an incorrect detection of arrhythmia in the patient. To address these improperly administered therapeutic stimulation pulses, an ambulatory medical device includes processes and systems for verifying an initial declaration of an arrhythmia. The ambulatory medical device described include at least one first sensing electrode and at least one second sensing electrode distinct from the at least one first sensing electrode. First electrocardiogram (ECG) signals detected by the first sensing electrode are analyzed to provide an initial declaration of the arrhythmia condition of the patient. As a treatment protocol is being initiated in response to the analysis of the first ECG signals, second ECG signals detected by the second sensing electrode are analyzed to verify the initial declaration of the arrhythmia.

Abstract: Disclosed systems and methods determine chest compression parameter(s) for a patient receiving chest compressions during cardiopulmonary resuscitation (CPR). The systems and methods determine the chest compression parameter(s), such as chest compression depth, using a reference sensor and multiple positions sensors.

Abstract: A variety of methods, medical devices, responder network servers, emergency services interfaces and call center related processes are described that can help improve responder networks designed to get a medical device such as an automated external defibrillator and/or volunteer responders to the scene of a potential medical incident.

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: A power control circuit for use with devices that will be placed in a flammable sterilizing gas includes a bi-stable switch that is configured to produce an output to place the circuitry of a connected device in a run state or a sleep state. The bi-stable switch controls one or more transistors to drain energy from energy storage devices in the circuitry of the connected device to a level below an ignition level of a sterilizing gas. A remotely actuatable switch can be actuated from outside of a packaging in which the power control circuit is placed to cause the bi-stable switch to produce an output that puts the circuitry in the run state without removing the power control circuit from the packaging.

Abstract: A defibrillator system optimizes the timing and manner of applying a defibrillator charge to a patient based upon data provided to the defibrillator from a utility module or one or more external devices. A parameter module on the utility module provides the defibrillator with patient parameter information. Devices external to the utility module may provide the utility module with coaching data that the utility module may pass through to the defibrillator as a proxy to the external devices. The utility module may also provide external devices with patient data that the utility module may pass through to the external devices as a proxy to the defibrillator on a scheduled or other basis. The utility module may additionally provide a reserve of power to enable defibrillators to be used where power is unavailable and to enable defibrillators to deliver multiple charges more readily anywhere, anytime.

Abstract: Techniques are described for providing a therapeutic pseudo-constant DC current in an implantable stimulator using pulses whose positive and negative phases are not charge balanced. Such charge imbalanced pulses act to charge any capacitance in the current path between selected electrode nodes, such as the DC-blocking capacitors and/or any inherent capacitance such as those present at the electrode/tissue interface. These charged capacitances act during quiet periods between the pulses to induce a pseudo-constant DC current. Beneficially, these DC currents can be small enough to stay within charge density limits and hence not corrode the electrode or cause tissue damage, and further can be controlled to stay within such limits or for other reasons. Graphical user interface (GUI) aspects for generating the charge imbalanced pulses and for determining and/or controlling the pseudo-constant DC current are also provided.

Abstract: A smart carry case which is effectively a portable GPS-enabled, AED monitoring system that is capable of monitoring an AED (as well as itself) and reporting back the presence, function and location of the AED to a remote host. Also disclosed is street furniture that is configured to retain, continuously monitor, and dispense an AED and communicate to a remote host (i.e., a control room). The street furniture is preferably configured such that a user presses the intercom button. In response, the street furniture contacts the control room. The control room, in turn, sends a signal to the street furniture causing the compartment to unlock so the AED can be removed and used in a rescue. The street furniture is configured to continuously monitor the AED and ensure it is functional, using a device such as has been described hereinabove. If the AED is used, an ambulance is deployed to the location. The AED that is retained in the compartment may be a smart carry case.

Abstract: A method of controlling a defibrillator with a function of analyzing an electrocardiogram, includes: dividing an electrocardiogram of a patient into a plurality of analysis zones; executing analysis of the electrocardiogram in each of the divided analysis zones; based on a result of the analysis of the electrocardiogram in each of the analysis zones, executing determination whether electric shock on the patient is necessary or not, and calculating reliability of the determination; and based on a combination of the determination and the reliability, instructing a first procedure to be performed on the patient.

Abstract: A defibrillator disclosed in the present application including at least: a high voltage capacitor charged through a battery power source; a ladder bridge circuit connected to one end of the high voltage capacitor; a control unit for controlling an on/off operation of switching elements constituting the ladder bridge circuit, wherein the ladder bridge circuit comprises: a first circuit unit and a second circuit unit, one ends of which are connected to one end of the high voltage capacitor and which are connected in parallel to each other; and a third circuit unit connected in series to the other ends of the first circuit unit and the second circuit unit.

Abstract: The disclosed electrical stimulation system generates interventions to assist patients in complying with a diet. The wearable device includes a microprocessor, electrical stimulator and at least one electrode configured to deliver electrical stimulation to the epidermis, through a range of 0.1 mm to 10 mm or a range of 0.1 mm to 20 mm of the dermis, of a T2 dermatome to a T12 dermatome or meridian of the patient, a C5 to a T1 dermatome across the hand and/or arm, and/or the upper chest regions. The device is adapted to provide electrical stimulation as per stimulation protocols and to communicate wirelessly with a companion control device configured to monitor and record appetite patterns of the patient and generate interventions. The control device is also configured to monitor, record, and modify stimulation parameters of the stimulation protocols.

Abstract: Optically isolated micromachined (MEMS) switches and related methods are described. The optically isolated MEMS switches described herein may be used to provide isolation between electronic devices. For example, the optically isolated MEMS switches of the types described herein can enable the use of separate grounds between the receiving electronic device and the control circuitry. Isolation of high-voltage signals and high-voltage power supplies can be achieved by using an optical isolator and a MEMS switch, where the optical isolator controls the state of the MEMS switch. In some embodiments, utilizing optical isolators to provide high voltages, the need for electric high-voltage sources such as high-voltage power supplies and charge pumps may be removed, thus removing the cause of potential damage to the receiving electronic device. In one example, the optical isolator and the MEMS switch may be co-packaged on the same substrate.

Abstract: A system includes a first computing device comprising a processor coupled to a memory. The processor and the memory are configured to receive at least one of (i) information indicative of treatment of a victim by a first caregiver using the first computing device and (ii) information indicative of a health status of the victim; determine that treatment of the victim by the first caregiver using the first computing device is completed; and transmit the received information to a second computing device.

Abstract: Enclosures for implantable medical devices are machined from biocompatible materials using processes such as electric discharge machining and/or milling. Material is machined to create an enclosure. The enclosure may include an enclosure sleeve that has top and bottom caps added where the enclosure sleeve is machined either as a whole or as two separate halves that are subsequently joined together. During construction, circuitry is installed and where the enclosure includes an enclosure sleeve, the open top and bottom may be closed by caps while a connector block module may be mounted to the complete enclosure. The machining process allows materials that are typically difficult to stamp, such as grade 5 and 9 titanium and 811 titanium, that are beneficial to telemetry and recharging features of an implantable medical device to be used while allowing for an enclosure with a relatively detailed geometry and relatively tight tolerances.

Abstract: An ambulatory medical device capable of delivering therapy to a patient includes at least one response mechanism having a state capable of being activated by one response button; a controller operatively connected with the at least one response mechanism, the controller including at least one processor coupled with a memory; and a therapy manager component executable by the controller and configured to detect a physiological parameter having a value indicative of a health disorder of the patient, notify the patient of impending therapy delivery in response to the detection of the physiological parameter, monitor the state of each at least one response mechanism within at least one predetermined time period, and delay therapy delivery to the patient in response to detection of a change in the state in a single response mechanism of the at least one response mechanism within the at least one predetermined time period.

Abstract: A computer Implemented method and system for detecting arrhythmias in cardiac activity are provided. The method is under control of one or more processors configured with specific executable instructions. The method obtains far field cardiac activity (CA) signals and applies a direction related responsiveness (DRR) filter to the CA signals to produce DRR filtered signals. The method compares a current sample from the CA signals to a prior sample from the DRR filtered signals to identify a direction characteristic of the CA signals and defines the DRR filter based on a timing constant that is set based on the direction characteristic identified. The method analyzes the CA signals in connection with the DRR filtered signals to identify a peak characteristic of the CA signals and determines peak to peak intervals between successive peak characteristic. The method detects at least one of noise or an arrhythmia based on the peak to peak intervals and records results of the detecting.

Abstract: Neuromodulation devices and methods of their use are described in which a therapeutic device is configured to generate a treatment for treating pain such as the reduction of the symptoms of chronic and acute pain as well as for treating other conditions. The neuromodulation device generates an output electrical signal in the form of pulses with a fast rise-time spike waveform followed by a longer-duration, lower amplitude primary phase waveform. The output signal includes a broad range of frequency components, with time constants tuned so as to interact with specific cell membrane or cellular components. The output signal may be conducted to the patient via electrodes. The pulses are triggered at variable intervals which prevent habituation.

Abstract: A system and method for controlling current-range switching to limit glitching includes a sense array connected between an input and a load. The sense array includes a parallel first and second branch circuits. The first branch circuit includes at least one first transistor, a first sense resistor, and a variable impedance control circuit. The variable impedance control circuit is configured to receive a control signal and generate a gate voltage of the at least one first transistor to establish an impedance of the sense array between the input and the load that is proportional to the control signal, including controlling the gate voltage of the at least one first transistor such that an impedance of the sense array transitions from a first value to a second value when connecting or disconnecting the first branch circuit between the input and the load while the input is connected to the load through the second branch circuit.

Abstract: A dynamically adjustable multiphasic pulse system and method are provided. The dynamically adjustable multiphasic pulse system may be used as pulse system for a defibrillator or cardioverter.

Abstract: A pulsed power system is disclosed, which comprises at least two H-bridges cascaded for providing pulsed current to a load. Each H-bridge comprises at least two legs, and each leg comprises at least two transistor switches connected in series. Each transistor switch comprises a transistor and a diode electrically coupled with the transistor in parallel. The pulsed power system also comprises a controller configured to determine if a slew rate of the load current is lower than a threshold, and to reduce switching loss in response to the slew rate being lower than the threshold.

Abstract: According to an embodiment of the present invention, a system comprises a removable interface module and wireless dock for an automated external defibrillator. The removable interface module includes a first processor, a first memory and first low-power radio transceiver communicatively coupled with the first processor and configured to receive status information from the automated external defibrillator. The removable interface module further includes a wireless power receiver and a rechargeable energy storage device electrically coupled with the wireless power receiver and configured to receive power wirelessly for the removable interface module. The wireless dock includes a second processor, a second memory and second low-power radio transceiver communicatively coupled with the second processor and configured to receive the status information from the removable interface module when the automated external defibrillator is powered off and transmit the status information through a networking interface.