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Patent US10143387
Issued 2018-12-04
Defibrillator Charging
Systems and methods related to the field of cardiac resuscitation, and in particular to devices for assisting rescuers in performing cardio-pulmonary resuscitation (CPR).
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- 1. An external defibrillator comprising:
a capacitor configured to be electrically connected to an electrical energy storage source and capable of delivering a defibrillating shock to a patient; circuitry for detection of chest compressions delivered to the patient; and a controller programmed to: analyze one or more ECG signals from the patient during delivery of chest compressions to the patient; determine a desirability of a shock to the patient based on the analysis of the one or more ECG signals during the delivery of chest compressions of a CPR cycle; determine that chest compressions of the CPR cycle have been completed based on a signal from the circuitry for detection of chest compressions delivered to the patient; after chest compressions of the CPR cycle have been completed, analyze one or more ECG signals to reconfirm the desirability of the shock to the patient based on an analysis of the one or more ECG signals acquired in an absence of chest compressions; and control the capacitor to deliver the shock to the patient based at least in part on the reconfirmation of the desirability of providing the shock to the patient.
- 19. An external defibrillator comprising:
a capacitor configured to be electrically connected to an electrical energy storage source and capable of delivering a defibrillating shock to a patient; circuitry for detection of chest compressions delivered to the patient; and a controller programmed to: charge the capacitor during delivery of chest compressions to the patient; analyze one or more electrocardiogram (ECG) signals from the patient during delivery of chest compressions to the patient; determine the desirability of a shock to the patient based on the analysis of the one or more ECG signals during the delivery of chest compressions of a CPR cycle; determine when the rescuer has completed the chest compressions of the CPR cycle based on a signal from the circuitry for detection of chest compressions delivered to the patient; analyze one or more ECG signals immediately after the rescuer has completed the chest compressions of the CPR cycle to reconfirm the desirability of the shock to the patient; and control the capacitor to deliver the shock to the patient based at least in part on the reconfirmation of the desirability of providing the shock to the patient.
- 21. A method for providing electrical therapy to a patient, the method comprising:
analyzing one or more electrocardiogram (ECG) signals from a patient during delivery of chest compressions of a CPR cycle to the patient; determining the desirability of a shock to the patient based on the analysis of the one or more ECG signals during the delivery of the chest compressions; determining that chest compressions of the CPR cycle have been completed based on a signal from circuitry for detection of chest compressions delivered to the patient; after the chest compressions of the CPR cycle have been completed, analyzing one or more ECG signals to reconfirm the desirability of the shock to the patient; and providing a defibrillating shock from a defibrillating device to the patient based at least in part on the reconfirmation of the desirability of the shock.
