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US 10,499,824 B2Granted
Reducing electrocardiogram artifacts during and post CPR
AssigneePhysio-Control, Inc.
InventorJoseph L. Sullivan
Life of this patent
Estimating the term…
Abstract
A portable medical device having improved ECG trace display and reporting. Embodiments implement features to ameliorate artifacts created by virtue of attempting to eliminate compression artifacts due to mechanical compression devices. Other embodiments additionally implement features to seek to detect the occurrence of ROSC while chest compressions are ongoing.
Claims9
A method for processing an ECG signal, comprising:
- receiving the ECG signal, the ECG signal including ECG data that is representative of one or more QRS complexes of a patient;
- receiving an impedance signal, the impedance signal including impedance data representative of an impedance between at least two electrodes on the patient;
- applying a first filter to the ECG signal to remove compression artifacts that result from mechanical chest compressions delivered to the patent at a periodic rate;
- applying a second filter to the impedance signal to remove compression artifacts that result from the mechanical chest compressions delivered to the patient at the periodic rate;
- correlating at least a portion of the impedance data with the ECG data;
- assessing the correlated ECG and impedance data to determine that the patient has return of spontaneous circulation based on a temporal alignment of a QRS complex with at least a feature of the impedance data indicative of circulation;
- and
- generating an instruction to stop mechanical chest compressions based on the determination that the patient has return of spontaneous circulation.
5 more elements
Dependencies are inferred from the claim text.