This document describes an automated external defibrillator comprising a control configured to switch between a pediatric operating mode and an adult operating mode, wherein each operating mode comprises a mode-specific energy configuration and a mode-specific user configuration; an indicator configured to provide an indication of the operating mode in use during a resuscitation process; one or more processors configured to switch to the mode-specific energy configuration and the mode-specific user configuration upon a change of operating mode between the pediatric operating mode and the adult operating mode such that the automated external defibrillator delivers a defibrillating shock to a patient based on the mode-specific energy configuration; and an interface of the automated external defibrillator provides resuscitation instructions to a user based on the mode-specific user configuration.

This document describes an automated external defibrillator comprising a control configured to switch between a pediatric operating mode and an adult operating mode, wherein each operating mode comprises a mode-specific energy configuration and a mode-specific user configuration; an indicator configured to provide an indication of the operating mode in use during a resuscitation process; one or more processors configured to switch to the mode-specific energy configuration and the mode-specific user configuration upon a change of operating mode between the pediatric operating mode and the adult operating mode such that the automated external defibrillator delivers a defibrillating shock to a patient based on the mode-specific energy configuration; and an interface of the automated external defibrillator provides resuscitation instructions to a user based on the mode-specific user configuration.

A variety of arrangements and methods relating to a defibrillator and a multiphasic pulse generator are described. In one aspect of the invention, a defibrillator includes two paddles that each include a defibrillator electrode covered in a protective housing. The two paddles are sealed together using a releasable seal to form a paddle module such that the housings of the paddles form the exterior of the paddle module. The multi-phasioc pulse generator includes a first subsystem, a second subsystem, and a switching component is electrically coupled with the paddles. The first subsystem and the second subsystem are arranged to generate a first phase of a pulse and a second phase of the pulse, the first phase of the pulse having a positive phase or a negative phase, and the second phase of the pulse having a phase in opposite polarity to the first phase of the pulse. The switching component switches between the first subsystem and the second subsystem to generate a therapeutic pulse having at least a positive phase and a negative phase.

This document describes an automated external defibrillator comprising a control configured to switch between a pediatric operating mode and an adult operating mode, wherein each operating mode comprises a mode-specific energy configuration and a mode-specific user configuration; an indicator configured to provide an indication of the operating mode in use during a resuscitation process; one or more processors configured to switch to the mode-specific energy configuration and the mode-specific user configuration upon a change of operating mode between the pediatric operating mode and the adult operating mode such that the automated external defibrillator delivers a defibrillating shock to a patient based on the mode-specific energy configuration; and an interface of the automated external defibrillator provides resuscitation instructions to a user based on the mode-specific user configuration.

A compact external defibrillator for use in generating a defibrillation waveform is described. The external defibrillator includes a charging circuit enclosed in a housing. The charging circuit includes a pulse capacitor that stores defibrillation energy, a high voltage generator circuit through which the pulse capacitor is charged with the defibrillation energy, and a discharge and polarity control circuit to receive the defibrillation energy. A low voltage energy supplementing circuit stores supplemental defibrillation energy. A microcontroller enables the low voltage energy supplementing circuit to modulate delivery of the stored supplemental defibrillation energy to the pulse capacitor to augment the defibrillation energy and adjusts the supplemental defibrillation energy stored by switching one or more low voltage ultra-capacitors. Each electrode of a pair are housed in a pad having a substantially same size as one surface of the housing and sides of the housing are directly adjacent to each of the pads.

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.

Techniques for generating and updating electronic records of rescue events are described. In a rescue scene, a medical device monitors and/or treats a patient. An example tracking device determines an identifier of the medical device by analyzing a signal corresponding to a medical device. In addition, the tracking device identifies a physiological parameter of the patient. The tracking device generates an electronic record of the patient that includes the identifier and the physiological parameter. The tracking device further outputs the electronic record.

Improved devices, circuits and methods of operation in implantable stimulus systems. An implantable defibrillator may comprise an H-bridge output circuit having low and high sides, with a current controlling circuit coupled to the high side of the H-bridge output circuit and a current monitoring circuit coupled to the low side of the H-bridge output circuit. Alternate current paths to the output of the H-bridge, or to the H-Bridge itself, are used for delivering different therapies to the patient.

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.

An external defibrillator system may include processing circuitry; signal generation circuitry communicatively coupled to the processing circuitry; and a plurality of electrodes, each including an electrode body electrically coupled to the signal generation circuitry and configured to deliver an electrical pulse therapy to a patient; and an electrolyte dispersal pad that includes a substrate defining a plurality of wells, each defining an opening; an electrolyte material, e.g., fluid, disposed within at least a portion of the plurality of wells; and a conductive material disposed over at least a portion of the openings and configured to retain the electrolyte material within the plurality of wells, where the processing circuitry is configured control the signal generation circuitry to pass a current pulse through a portion of the conductive material to fuse the portion of the conductive material to release the electrolyte material from at least one of the wells.