Automated external defibrillator operator interface

Abstract

A portable automated external defibrillator (AED) configured for use with a packaged pair of defibrillator electrodes of the type electrically coupled to one another within the package and having lead wires extending from the package and an electrical connector on the ends of the lead wires. The AED includes a case with an electrode compartment configured to hold the packaged electrodes, and an openable lid for enclosing the compartment. Electrode terminals configured for electrical interconnection to the electrical connector of the electrodes, a speaker and an LED display are positioned within the electrode compartment. An operator-actuated rescue switch and a rescue LED display are positioned on the outside of the case. A high voltage circuit generates defibrillation pulses and applies the pulses to the electrode terminals. The operation of the AED is controlled by a digital control system. Rescue mode operation of the AED is initiated when the lid is opened. The digital control system then generates voice prompts and/or visual displays informing the operator: 1) when the electrodes are not properly connected to the electrode terminals, 2) when to place the electrodes on the patient, 3) when the electrodes are not properly positioned on the patient, 4) when the patient's cardiac rhythm is being analyzed, 5) when an nonshockable rhythm is identified, 6) when the high voltage circuit is being charged, and 7) when a shockable rhythm is identified and the rescue switch can be actuated.