Method and apparatus for detecting arrhythmias in a medical device
First Claim
1. A method of treating a cardiac event of a heart of a patient by a medical device comprising therapeutic componentry and a plurality electrodes, comprising the steps of:
- sensing cardiac signals from the plurality of electrodes, the plurality of electrodes forming a first sensing vector and a second sensing vector;
determining with the medical device whether each one of the first sensing vector and the second sensing vector is corrupted by noise;
if the first sensing vector is corrupted by noise and the second sensing vector is not corrupted by noise, determining with the medical device if a cardiac signal sensed by the second sensing vector is indicative of one of a first cardiac rhythm and a second cardiac rhythm different from the first cardiac rhythm;
then if the cardiac signal sensed by the second sensing vector is indicative of the first cardiac rhythm, the medical device delivering a first therapeutic output to the patient based, at least in part, on the cardiac signal sensed by the second sensing vector and a cardiac signal sensed by the first sensing vector both being indicative of a first cardiac event;
if the cardiac signal sensed by the second sensing vector is indicative of the second cardiac rhythm, the medical device delivering a second therapeutic output to the patient based, at least in part, on the cardiac signal sensed by second sensing vector being indicative of a second cardiac event different from the first cardiac event.
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Abstract
A method of detecting a cardiac event in a medical device that includes sensing cardiac signals from a plurality of electrodes forming a first sensing vector and a second sensing vector, determining whether the first sensing vector and the second sensing vector is corrupted by noise, and determining, in response to one of the first sensing vector and the second sensing vector being corrupted by noise, whether the other of the first sensing vector and the second sensing vector is one of a first cardiac event and a second cardiac event different from the first cardiac event.
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Citations
22 Claims
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1. A method of treating a cardiac event of a heart of a patient by a medical device comprising therapeutic componentry and a plurality electrodes, comprising the steps of:
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sensing cardiac signals from the plurality of electrodes, the plurality of electrodes forming a first sensing vector and a second sensing vector; determining with the medical device whether each one of the first sensing vector and the second sensing vector is corrupted by noise; if the first sensing vector is corrupted by noise and the second sensing vector is not corrupted by noise, determining with the medical device if a cardiac signal sensed by the second sensing vector is indicative of one of a first cardiac rhythm and a second cardiac rhythm different from the first cardiac rhythm;
then if the cardiac signal sensed by the second sensing vector is indicative of the first cardiac rhythm, the medical device delivering a first therapeutic output to the patient based, at least in part, on the cardiac signal sensed by the second sensing vector and a cardiac signal sensed by the first sensing vector both being indicative of a first cardiac event;
if the cardiac signal sensed by the second sensing vector is indicative of the second cardiac rhythm, the medical device delivering a second therapeutic output to the patient based, at least in part, on the cardiac signal sensed by second sensing vector being indicative of a second cardiac event different from the first cardiac event. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of treating a cardiac event with a medical device comprising therapeutic componentry and a plurality of electrodes, comprising the steps of:
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sensing cardiac signals from the plurality of electrodes, the plurality of electrodes forming a first sensing vector and a second sensing vector; determining with the medical device whether each one of the first sensing vector and the second sensing vector is corrupted by noise; if the first sensing vector is corrupted by noise and the second sensing vector is not corrupted by noise, determining whether RR-intervals associated with the second sensing vector are regular; determining the cardiac signal sensed by the second sensing vector is a first cardiac rhythm based, at least in part, on the RR-intervals not being regular; if the cardiac signal sensed by the second sensing vector is indicative of the first cardiac rhythm, the medical device delivering a therapeutic output to the patient based, at least in part, on the cardiac signal sensed by the second sensing vector being within a first event threshold. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of treating a cardiac event with a medical device comprising therapeutic componentry and a plurality of electrodes, comprising the steps of:
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sensing cardiac signals from the plurality of electrodes, the plurality of electrodes forming a first sensing vector and a second sensing vector; determining with the medical device whether each of the first sensing vector and the second sensing vector is corrupted by noise; if the first sensing vector is corrupted by noise and the second sensing vector is not corrupted by noise, determining whether RR-intervals associated with the second sensing vector are regular; determining the cardiac signal sensed by the second sensing vector is a first cardiac rhythm based, at least in part, on the RR-intervals not being regular and that the cardiac signal sensed by the second sensing vector is indicative of a second cardiac rhythm based, at least in part, on the RR-intervals being regular; if the cardiac signal sensed by the second sensing vector is indicative of the first cardiac rhythm, the medical device delivering a first therapeutic output to the patient based, at least in part, on the cardiac signal sensed by the second sensing vector being within a first event threshold;
if the cardiac signal sensed by the second sensing vector is indicative of the second cardiac rhythm, the medical device delivering a second therapeutic output to the patient based, at least in part, on the cardiac signal sensed by the second sensing vector being within a second event threshold different from the first event threshold. - View Dependent Claims (19, 20, 21, 22)
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Specification