SELECTION OF OPTIMAL ACCELEROMETER SENSING AXIS FOR RATE RESPONSE IN LEADLESS PACEMAKER
First Claim
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1. A method for automatically monitoring a patient, comprising:
- receiving signals from each real axis of a multi-axis sensor;
generating from the real axis signals a virtual signal for each of a plurality of virtual axes of the multi-axis sensor;
identifying by a processor an optimal signal axis from the real axes and the plurality of virtual axes for monitoring a physiological signal of the patient;
storing a set of coordinates defining the optimal axis as respective weighting factors of the signals received from each real axis of the multi-axis sensor; and
monitoring the physiological signal of the patient by determining a metric of the signal using the multi-axis sensor signals and the stored weighting factors.
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Abstract
A medical device and associated method record signals from each real axis of a multi-axis sensor. An optimal axis for monitoring a physiological signal of the patient is identified from the real axes of the multi-axis sensor and multiple virtual axes. Coordinates defining the optimal axis are stored as respective weighting factors of the signals from each real axis of the multi-axis sensor. A metric of the physiological signal is determined using the multi-axis sensor signals and the weighting factors.
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Citations
21 Claims
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1. A method for automatically monitoring a patient, comprising:
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receiving signals from each real axis of a multi-axis sensor; generating from the real axis signals a virtual signal for each of a plurality of virtual axes of the multi-axis sensor; identifying by a processor an optimal signal axis from the real axes and the plurality of virtual axes for monitoring a physiological signal of the patient; storing a set of coordinates defining the optimal axis as respective weighting factors of the signals received from each real axis of the multi-axis sensor; and monitoring the physiological signal of the patient by determining a metric of the signal using the multi-axis sensor signals and the stored weighting factors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An implantable medical device, comprising:
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a multi-axis sensor having at least two real axes; and a processor configured to; receive signals from each real axis of the multi-axis sensor; generate from the real axis signals a virtual signal for each of a plurality of virtual axes of the multi-axis sensor; identify an optimal axis from the real axes and the plurality of virtual axes for monitoring a physiological signal of the patient; store coordinates defining the optimal axis as respective weighting factors of the signals from each axis of the multi-axis sensor; and determine a metric of the physiological signal of the patient using the multi-axis sensor signals and the weighting factors. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A non-transitory computer readable storage medium storing a set of instructions that cause a processor of an implantable medical device comprising a multi-axis sensor to:
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receive signals from each real axis of the multi-axis sensor; generate from the real axis signals a virtual signal for each of a plurality of virtual axes of the multi-axis sensor; identify an optimal axis for monitoring a physiological signal of the patient from the real axes of the multi-axis sensor and the plurality of virtual axes; store coordinates defining the optimal axis as respective weighting factors of the signals from each real axis of the multi-axis sensor; and determine a metric of the physiological signal using the multi-axis sensor signals and the weighting factors.
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Specification