Dynamic energy selection for defibrillation
AssigneeZOLL Medical Corporation
InventorsWeilun Quan, Gary A. Freeman
Life of this patent
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Abstract
In an aspect, a system for treating a patient in cardiac arrest is described and includes memory, one or more electronic ports for receiving signals from sensors for obtaining indications of an electrocardiogram (ECG) of the patient, one or more sensors for obtaining a transthoracic impedance of the patient, and a patient treatment module executable on one or more processing devices that is configured to generate, from the ECG, transform values that represent magnitudes of two or more frequency components of the ECG, and modify, based on at least one transform value, at least one shock delivery parameter.
Claims26
A medical system for assisting in resuscitative care of a patient, the medical system comprising:
- a defibrillator having one or more capacitors arranged to provide a defibrillating shock to the patient;
- a plurality of electrodes coupled with the defibrillator and configured to sense an ECG of the patient and to generate ECG signals based on the ECG;
- and
- one or more computer processors provided with the defibrillator and executable using code and memory stored in a non-transitory computer-readable storage medium, the one or more computer processors being configured to:
- receive the ECG signals from the plurality of electrodes,
- process the ECG signals to generate ECG data,
- perform one or more amplitude spectrum area (AMSA) calculations on the ECG data in a time domain to generate a frequency domain representation of the ECG data and an AMSA transform value based on the frequency domain representation of the ECG data,
- analyze the ECG data to determine whether a heart rhythm of the patient is shockable,
- in response to determining that the heart rhythm of the patient is shockable, determine a level of energy to be delivered in a defibrillating shock to the patient based on the AMSA transform value,
- cause the one or more capacitors to be charged to at least the level of energy to be delivered in the defibrillating shock to the patient, and
- cause the defibrillator to deliver the defibrillating shock according to the level of energy.
Dependencies are inferred from the claim text.