DETECTION OF HEART RHYTHM USING AN ACCELEROMETER
First Claim
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1. A method comprising:
- filtering a signal received by an electrical sensing channel of an implantable medical device (IMD) configured to detect electrical depolarizations of a heart of a patient;
identifying a failure of the electrical sensing channel of the IMD based on the filtered signal; and
in response to identifying the failure, initiating a mechanical sensing channel of the implantable medical device to identify mechanical cardiac contractions.
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Abstract
Various techniques for using an accelerometer to detect cardiac contractions are described. One example method described includes filtering a signal received by an electrical sensing channel of an implantable medical device (IMD) configured to detect electrical depolarizations of a heart of a patient, identifying a failure of the electrical sensing channel of the IMD based on the filtered signal and, in response to identifying the failure, initiating a mechanical sensing channel of the implantable medical device to identify mechanical cardiac contractions.
144 Citations
20 Claims
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1. A method comprising:
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filtering a signal received by an electrical sensing channel of an implantable medical device (IMD) configured to detect electrical depolarizations of a heart of a patient; identifying a failure of the electrical sensing channel of the IMD based on the filtered signal; and in response to identifying the failure, initiating a mechanical sensing channel of the implantable medical device to identify mechanical cardiac contractions. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system comprising:
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an accelerometer positioned proximate to a wall of a heart of a patient; an electrical sensing channel configured to detect electrical depolarizations of the heart of the patient; a mechanical sensing channel configured to analyze a signal from the accelerometer to identify mechanical contractions of the heart of the patient; a sensing integrity module configured to; filter a signal received by the electrical sensing channel; and identify a failure of the electrical sensing channel based on the filtered signal; and a processor configured to initiate the mechanical sensing channel in response to the identified failure. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A computer-readable storage medium comprising instructions that, when executed, cause a programmable processor to:
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filter a signal received by an electrical sensing channel of an implantable medical device (IMD) configured to detect electrical depolarizations of a heart of a patient; identify a failure of the electrical sensing channel of the IMD based on the filtered signal; and in response to identifying the failure, initiating a mechanical sensing channel to identify mechanical cardiac contractions.
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20. A system comprising:
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means for filtering a signal received by an electrical sensing channel of an implantable medical device (IMD) configured to detect electrical depolarizations of a heart of a patient; means for identifying a failure of the electrical sensing channel of the IMD based on the filtered signal; and means for initiating a mechanical sensing channel to identify mechanical cardiac contractions in response to identifying the failure.
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Specification