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US 12,714,864 B2Granted
Rhythm sensing during external pacing
AssigneeWest Affum Holdings DAC
InventorsJoseph L. Sullivan, Jaeho Kim, David P. Finch
Life of this patent
Estimating the term…
Abstract
A wearable medical system (WMS) includes one or more pacing capabilities. The WMS May detect when the patient's heart rhythm starts to deteriorate, but not necessarily in a way that requires Defibrillation. In particular, the WMS may detect bradycardia of one or more types, and then confirm the detection before pacing to treat the detected bradycardia.
Claims20
A wearable cardioverter defibrillator (WCD) system, the WCD system comprising:
- a WCD configured to be worn by a person and to provide defibrillation therapy responsive to an electrocardiogram (ECG) signal of the person received via at least two monitor electrodes being indicative of ventricular fibrillation;
- and
- a WCD pacing module configured to:
- determine whether the received ECG signal meets one or more cardiac pacing criteria,
- responsive to determining that the received ECG signal meets the one or more cardiac pacing criteria, cause a warning to be communicated, the warning configured to indicate that cardiac pacing will be performed by the WCD, and
- cause the WCD to provide electrical charge as cardiac pacing pulses to at least two therapy electrodes for cardiac pacing of the person, wherein the cardiac pacing pulses are provided in a plurality of groups separated by at least one pause, the at least one pause having a duration greater than a period between successive cardiac pacing pulses within each of the plurality of groups to identify an intrinsic QRS complex in the received ECG signal, and
- wherein the WCD pacing module is further configured to cause the WCD to discontinue the cardiac pacing responsive to identification of the intrinsic QRS complex in the received ECG signal during the at least one pause.
4 more elements
A wearable medical device (WMD) system, the WMD system comprising:
- a WMD including:
- a plurality of electrodes;
- and
- a user interface, wherein the WMD system is configured to perform operations comprising:
- receive an electrocardiogram (ECG) signal via the plurality of electrodes,
- determine whether the received ECG signal meets one or more cardiac pacing criteria,
- responsive to determining that the received ECG signal meets the one or more cardiac pacing criteria, cause the WMD system to provide a pacing active warning, the pacing active warning being configured to indicate that cardiac pacing pulses are being provided to a person via the plurality of electrodes, wherein the cardiac pacing pulses are provided in a plurality of groups separated by at least one pause, the at least one pause having a duration greater than a period between successive cardiac pacing pulses within each of the plurality of groups to identify an intrinsic QRS complex in the received ECG signal;
- and
- receive an indication via the user interface to stop cardiac pacing and responsive to the received indication, cause the WMD to stop providing the cardiac pacing pulses, wherein the cardiac pacing is discontinued responsive to identification of the intrinsic QRS complex in the received ECG signal during the at least one pause.
6 more elements
A wearable cardioverter defibrillator (WCD) system, the WCD system comprising:
- a plurality of electrodes;
- one or more processors communicatively coupled to the plurality of electrodes;
- and
- a user interface communicatively coupled to the one or more processors, wherein the one or more processors are configured to:
- receive an electrocardiogram (ECG) signal via the plurality of electrodes,
- determine whether the received ECG signal meets one or more cardiac pacing criteria,
- responsive to determining that the received ECG signal meets the one or more cardiac pacing criteria, cause the WCD system to provide a pacing active warning, the pacing active warning being configured to indicate that cardiac pacing pulses are provided via the plurality of electrodes, wherein the cardiac pacing pulses are provided in a plurality of groups separated by at least one pause, the at least one pause having a duration greater than a period between successive cardiac pacing pulses within each of the plurality of groups to identify an intrinsic QRS complex in the received ECG signal;
- and
- receive an indication via the user interface to stop cardiac pacing and responsive to the received indication, cause the WCD system to stop providing the cardiac pacing pulses, wherein the cardiac pacing is discontinued responsive to identification of the intrinsic QRS complex in the received ECG signal during the at least one pause.
6 more elements
Dependencies are inferred from the claim text.