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US 7,171,269 B1Granted
Method of analysis of medical signals
AssigneeCardiodigital Limited
InventorsPaul Stanley Addison, James Nicholas Watson
Life of this patent
Estimating the term…
Abstract
A method of analysis of medical signals which uses wavelet transform analysis to decompose cardiac signals. Apparatus for carrying out the method, and cardiac apparatus adapted to employ the method are also described.
Claims18
A method of decomposition of waveforms in a cardiac signal comprising the steps of:
- a) connecting electrodes to a patient whose heart is in Ventricular Fibrillation (VF);
- b) deriving analogue input signals from the electrodes;
- c) sampling said analogue input signals to derive the cardiac signal (EKG);
- d) digitising said EKG signal;
- e) employing wavelet transform analysis to process said digitised EKG signal;
- f) extracting key features from the wavelet transform representation to predict the outcome of a specific interim therapeutic intervention during the Ventricular Fibrillation;
- and
- g) guiding a resuscitation protocol based on the prediction, said guidance comprising the steps of;
- h) using an analytical method to determine the likely outcome of a defibrillation shock;
- and
- i) determining whether to provide at least one interim therapeutic intervention from a group comprising defibrillatory shock, CPR and pharmaceutical, before shocking.
8 more elements
A method of decomposition of waveforms in a cardiac signal comprising the steps of:
- a) connecting electrodes to a presenting patient whose heart is in Ventricular Fibrillation (VF) after the commencement of Cardio-Pulmonary Resuscitation (CPR);
- b) deriving analogue input signals from the electrodes;
- c) sampling the analogue input signals to derive the cardiac signal (EKG);
- d) digitising said EKG signal;
- e) employing wavelet transform analysis to process said digitised EKG signal;
- and
- f) extracting key features from the wavelet transform representation to predict the outcome of a specific interim therapeutic intervention during the Ventricular Fibrillation.
4 more elements
A method of decomposition of waveforms in a cardiac signal comprising the steps of:
- a) connecting electrodes to a presenting patient whose heart is in Atrial Fibrillation (AF);
- b) deriving analogue signals from said electrodes;
- c) sampling the analogue input signals to derive the cardiac signal (EKG);
- d) digitising said EKG signal;
- and
- e) employing wavelet transform analysis to process said digitised EKG signal;
- and
- f) extracting key features from the wavelet transform representation to predict the outcome of a specific interim therapeutic intervention during the Atrial Fibrillation.
5 more elements
Dependencies are inferred from the claim text.