SYSTEMS AND METHODS FOR PROCESSING MULTIPLE PHYSIOLOGICAL SIGNALS
First Claim
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1. A method for determining physiological information about a subject, comprising:
- receiving a plurality of physiological signals of a subject from one or more sensing devices; and
using one or more processing devices to;
generate a first plurality of processed signals by applying a first set of processing operations to the plurality of physiological signals;
generate a second plurality of processed signals by applying a second set of processing operations to the plurality of physiological signals, wherein the second set of processing operations is different from the first set of processing operations;
calculate a first parameter by comparing features of the first plurality of processed signals;
calculate a second parameter by comparing features of the second plurality of processed signals; and
determine physiological information about the subject based at least in part on the first and second parameters.
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Abstract
Systems and methods are provided for patient monitors which apply different sets of signal processing operations to signals to identify multiple fiducials in physiological signals. PPG signals measured at two sensor sites may be processed with a first set of processing operations and analyzed to identify fiducials that allow the calculation of a diastolic DPTT. These PPG signals may then be processed with a different set of processing operations and the results analyzed to identify fiducials that allow the calculation of a systolic DPTT.
63 Citations
20 Claims
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1. A method for determining physiological information about a subject, comprising:
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receiving a plurality of physiological signals of a subject from one or more sensing devices; and using one or more processing devices to; generate a first plurality of processed signals by applying a first set of processing operations to the plurality of physiological signals; generate a second plurality of processed signals by applying a second set of processing operations to the plurality of physiological signals, wherein the second set of processing operations is different from the first set of processing operations; calculate a first parameter by comparing features of the first plurality of processed signals; calculate a second parameter by comparing features of the second plurality of processed signals; and determine physiological information about the subject based at least in part on the first and second parameters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for determining physiological information about a subject, comprising:
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a signal input configured to receive a plurality of physiological signals of a subject from one or more sensing devices; and one or more processing devices in communication with the signal input and configured to; generate a first plurality of processed signals by applying a first set of processing operations to the plurality of physiological signals; generate a second plurality of processed signals by applying a second set of processing operations to the plurality of physiological signals, wherein the second set of processing operations is different from the first set of processing operations; calculate a first parameter by analyzing features of the first plurality of processed signals; calculate a second parameter by analyzing features of the second plurality of processed signals; and determine physiological information about the subject based at least in part on the first and second parameters. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification