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.

An AED unit is operable to selectively switch to a pediatric rescue protocol by inserting a key-like device into an aperture of the AED unit. A sensor inside the case of the AED unit senses the presence of the device in the slot and responds by executing the pediatric rescue protocol. A separate electrode pad mating connector on the AED unit receives an electrode pad connector, the associated electrode pads being suitable for either adult or pediatric patients.

Described is an automated external defibrillator (AED). The AED comprises two pads for placement on a patient, each pad comprising an energy storage system. The energy storage system comprises at least two energy storage blocks, a switching circuit and a shock generation circuit connected to the two pads, and a controller connected to the switching circuit and the shock generation circuit. The controller is configured to perform an electrical switching operation to provide a defibrillation shock in two phases, such that the voltage and a peak current in each of the two phases is substantially the same. Each energy storage block comprises one or more capacitors. At least one of the energy storage blocks including two or more capacitors connected in series, and at least two energy storage blocks are connected in parallel so that the capacitor system includes capacitors connected both in series and in parallel with each other.

A dynamically adjustable biphasic or multiphasic pulse generation system and method are provided. The dynamically adjustable biphasic or multiphasic pulse generator system may be used as a pulse generation system for a defibrillator or other type of electrical stimulation medical device.

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. The dynamically adjustable multiphasic pulse system may generate a positive phase and a negative phase of a pulse to generate a therapeutic pulse.

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 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.

A pulse generation system is disclosed. The pulse generation system includes a controller, an output terminal, and a plurality of pulse generator circuits. The controller is configured to cause a driving signal pulse to be transmitted to any selected one or more of the pulse generator circuits, and to cause the driving signal pulse to not be transmitted to any selected one or more other pulse generator circuits. Each of the pulse generator circuits is configured to generate an output voltage pulse at the output terminal in response to the driving signal pulse being transmitted thereto.

A medical device is configured to deliver a cardiac pacing pulse by enabling a bypass circuit to couple a cardiac pacing voltage source to a cardiac pacing output pathway that excludes a first portion of a high voltage output circuit used to deliver cardioversion/defibrillation shock pulses by the medical device and includes a second portion of the high voltage output circuit used for delivering cardioversion/defibrillation shock pulses.

The present invention relates an implantable pulse generator comprising an electric circuit, wherein the electric circuit comprises: a primary energy store, at least one secondary energy store, and a control unit, wherein the control unit is configured to activate an electric switch in the electric circuit in such a way that, in a first interval of a first phase of a pulse delivery, the primary energy store is discharged via a therapeutic current path, and to activate an electric switch in the electric circuit in such a way that, in a second interval of the first phase of the pulse delivery, the secondary energy store is discharged via the therapeutic current path, wherein the primary energy store and the at least one secondary energy store are fixedly connected, or connectable, in series, and wherein the implantable pulse generator is designed to deliver a shock having an approximately rectangular pulse waveform.