IMPLANTABLE MEDICAL DEVICE WITH ADAPTIVE SIGNAL PROCESSING AND ARTIFACT CANCELLATION
First Claim
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1. A method for sensing signals in a medical device system, comprising:
- sensing a multi-dimensional signal from a single sensor to generate multi-dimensional signal data;
plotting the multi-dimensional signal data in a multi-dimensional coordinate system;
determining a direction of variation of the multi-dimensional signal data in the coordinate system; and
detecting a physiological condition of the patient in response to the direction of variation of the multi-dimensional signal data.
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Abstract
A medical device includes one or more sensors used to acquire a multi-dimensional signal. In one embodiment, principal component analysis is performed on the multi-dimensional signal to produce signal data. The principal component analysis results are used to cancel signal artifact in one embodiment. A medical device controller produces one of a therapy control and a diagnostic output in response to the signal data.
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Citations
26 Claims
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1. A method for sensing signals in a medical device system, comprising:
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sensing a multi-dimensional signal from a single sensor to generate multi-dimensional signal data; plotting the multi-dimensional signal data in a multi-dimensional coordinate system; determining a direction of variation of the multi-dimensional signal data in the coordinate system; and detecting a physiological condition of the patient in response to the direction of variation of the multi-dimensional signal data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A medical device system for sensing signals, comprising:
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a single sensor sensing a multi-dimensional signal to generate multi-dimensional signal data; a processor plotting the multi-dimensional signal data in a multi-dimensional coordinate system, and determining a direction of variation of the multi-dimensional signal data in the coordinate system; and a controller detecting a physiological condition of the patient in response to the direction of variation of the multi-dimensional signal data. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification