Cardiac Pacemaker and/or ICD Control and Monitor
First Claim
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1. A biomedical transducer comprising:
- a) a first 3DA to be disposed on the subject to measure the gross motion thereof, b) a second 3DA to be disposed in close proximity to the subject'"'"'s heart to measure the local movement of the heart, c) means for comparing the output of the first and second 3DA'"'"'s to determine the relative movement of the heart, d) means to modulate the output of a pacemaker or ICD device in response to the relative movement of at least one of the heart and the subject.
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Abstract
A cardiac pacemaker and/or ICD device deploys a plurality of three-dimensional accelerometers to characterize and distinguish between the local motion of the heart and the gross movement of the patient. The relative difference between these movements is used to distinguish between false negatives results of the electrogram reading to avoid triggering an unneeded defibrillation pulse, or increasing the pacing rate when the patient is exercising.
10 Citations
21 Claims
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1. A biomedical transducer comprising:
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a) a first 3DA to be disposed on the subject to measure the gross motion thereof, b) a second 3DA to be disposed in close proximity to the subject'"'"'s heart to measure the local movement of the heart, c) means for comparing the output of the first and second 3DA'"'"'s to determine the relative movement of the heart, d) means to modulate the output of a pacemaker or ICD device in response to the relative movement of at least one of the heart and the subject. - View Dependent Claims (2, 3, 4)
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5. A method of treating cardiac patients, the method comprising the steps of:
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a) providing the patient with at least one of a cardiac pacemaker or ICD, b) providing at least a first 3DA disposed on the patient to measure the gross motion thereof, c) providing at least a second 3DA disposed in close proximity to the heart of the patient to measure the local movement of the heart, d) determining the patient'"'"'s level of physical activity from at least one of the out of the first and second 3DA, e) modulating the output of the pacemaker in response to patient'"'"'s level of physical activity. - View Dependent Claims (6, 7)
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8. A method of treating cardiac patients, the method comprising the steps of
a) providing the patient with an ICD, b) providing at least a first 3DA disposed on the patient to measure the gross motion thereof, c) providing at least a second 3DA disposed in close proximity to the heart of the patient, d) comparing the movement between 1st and 2nd accelerometer to measure the local movement of the heart, e) verifying the accuracy of electrogram measurements by the ICD by confirming that the movement of a least a portion of the heart corresponds with electrical activity detected by the electrogram, f) applying at least one appropriate therapeutic shock via the ICD when the electrogram measurement is verified.
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12. A method of treating cardiac patients, the method comprising the steps of:
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a) providing the patient with an ICD, b) providing at least a first 3DA disposed on the patient to measure the gross motion thereof, c) providing at least one additional accelerometer disposed in close proximity to a local region of the heart of the patient, d) comparing the output of the first 3DA and the least one additional accelerometer to determine the relative local movement of at least a portion of the heart, e) computing at least one of the location and magnitude of cardiac fibrillation and/or fluttering from said comparison step, f) determining the appropriate therapeutic discharge from the ICD for least one of the location and magnitude of the cardiac fibrillation and/or fluttering form the said comparison. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification