Pacing device with acoustic sensor
First Claim
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1. An external wearable medical device comprising:
- at least one therapy electrode;
at least one acoustic sensor;
at least one electrocardiogram (ECG) sensor configured to acquire an ECG signal; and
at least one processor coupled with the at least one therapy electrode, the at least one ECG sensor, and the at least one acoustic sensor and configured todeliver at least one pacing pulse via the at least one therapy electrode;
blank a portion of the ECG signal for a period of time beginning from when the at least one pacing pulse is delivered and comprising a duration spanning between approximately 30 milliseconds and 200 milliseconds;
receive one or more acoustic signals acquired via the at least one acoustic sensor during the duration when the portion of the ECG signal is blanked;
process the one or more acoustic signals to generate processed acoustic data; and
calculate at least one metric based on a frequency domain analysis of the processed acoustic data acquired within the period of time to determine whether the at least one pacing pulse resulted in capture.
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Abstract
In at least one example, a medical device is provided. The medical device includes at least one therapy electrode, at least one acoustic sensor, and at least one processor coupled with the at least one therapy electrode and the at least one acoustic sensor. The at least one processor is configured to deliver at least one pacing pulse via the at least one therapy electrode and to analyze processed acoustic data to determine whether the at least one pacing pulse resulted in capture.
160 Citations
19 Claims
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1. An external wearable medical device comprising:
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at least one therapy electrode; at least one acoustic sensor; at least one electrocardiogram (ECG) sensor configured to acquire an ECG signal; and at least one processor coupled with the at least one therapy electrode, the at least one ECG sensor, and the at least one acoustic sensor and configured to deliver at least one pacing pulse via the at least one therapy electrode; blank a portion of the ECG signal for a period of time beginning from when the at least one pacing pulse is delivered and comprising a duration spanning between approximately 30 milliseconds and 200 milliseconds; receive one or more acoustic signals acquired via the at least one acoustic sensor during the duration when the portion of the ECG signal is blanked; process the one or more acoustic signals to generate processed acoustic data; and calculate at least one metric based on a frequency domain analysis of the processed acoustic data acquired within the period of time to determine whether the at least one pacing pulse resulted in capture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of pacing a subject using an external wearable medical device comprising at least one therapy electrode, the method comprising:
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acquiring, by an ECG sensor, an ECG signal; delivering, by the external wearable medical device, at least one pacing pulse via the at least one therapy electrode; blanking, by at least one processor, a portion of the ECG signal for a period of time beginning from when the at least one pacing pulse is delivered and comprising a duration spanning between approximately 30 milliseconds and 200 milliseconds; receiving, by the at least one processor, one or more acoustic signals acquired via at least one acoustic sensor during the duration when the portion of the ECG signal is blanked; processing, by the at least one processor, the one or more acoustic signals to generate processed acoustic data; and calculating, by the at least one processor, at least one metric based on a frequency domain analysis of the processed acoustic data acquired within the period of time to determine whether the at least one pacing pulse resulted in capture.
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Specification