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Apparatus for reversing a shock decision in an automated external defibrillator

A defibrillator, automatic technology, applied in the direction of cardiac defibrillators, applications, sensors, etc.

Pending Publication Date: 2018-05-11
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods only provide an indication of whether CPR should be interrupted for defibrillation purposes to perform ECG analysis
Therefore, these solutions incur additional delays

Method used

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  • Apparatus for reversing a shock decision in an automated external defibrillator
  • Apparatus for reversing a shock decision in an automated external defibrillator
  • Apparatus for reversing a shock decision in an automated external defibrillator

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Embodiment Construction

[0042] The shock advice algorithm of the present invention, known as Optimal Arrhythmia Recognition Technology (ART), generally applies the principles of the aforementioned wavelet transform analysis to the ECG signal stream, but replaces the wavelet transform with a series of fixed frequency bandpass filters . The bank of bandpass filters is preferably configured with a frequency bin similar to the Gaussian bin used to generate conventional Morlet wavelets.

[0043] The ART algorithm suppresses noise associated with CPR artifacts by selectively passing relatively high frequency components of potentially corrupting ECG signals. ART is based on the inventor's realization that although CPR and organized heart rhythm can occur at similar repetition rates of about 1 Hz to 2 Hz, typical CPR noise has relatively few high frequency components in its signal, i.e., the The signal tends towards a rounded waveform. Due to the rapid polarization and depolarization of the heart over a si...

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Abstract

A defibrillator (AED) using an ECG analysis model or algorithm which can function in two different modes. The ECG analysis model is particularly suited for analysis during periods of CPR. Both modes of operation reach a shock decision in essentially the same way, where one or more ECG data segments indicate a shockable cardiac condition. In one mode of operation, the shock decision is irreversibleonce made. In another mode of operation, the shock decision is reversible if one or more subsequent ECG data segments indicate a no-shock decision. Improved specificity of the model is obtained without undue degradation of sensitivity to shockable ECG.

Description

technical field [0001] The present invention relates to an improved apparatus and method for treating victims of cardiac arrest, especially those requiring treatment regimens including cardiopulmonary resuscitation (CPR) and defibrillation therapy. Background technique [0002] Defibrillators deliver high-voltage pulses to the heart in order to restore normal rhythm in patients experiencing cardiac arrhythmias such as ventricular fibrillation (“VF”) or ventricular tachycardia (“VT”) without spontaneous circulation and shrink function. There are several classes of defibrillators, including manual defibrillators and automated external defibrillators ("AEDs"). AEDs differ from manual defibrillators in that AEDs can automatically analyze electrocardiogram ("ECG") rhythms to determine whether defibrillation is required. After deciding that a shock is required, the AED arms itself to deliver a electrotherapy shock, and then the AED advises the user to press the shock button to d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N1/39A61B5/04A61B5/0452A61B5/361A61B5/363
CPCA61N1/3925A61N1/3993A61B5/7217A61B5/6823A61B2505/01A61N1/39044A61B5/316A61B5/361A61B5/363A61B5/349A61B5/318A61N1/025A61N1/3987
Inventor 刘晨光S·E·格曼
Owner KONINKLJIJKE PHILIPS NV
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