ITERATIVE PROBABILISTIC PARAMETER ESTIMATION APPARATUS AND METHOD OF USE THEREFOR
First Claim
1. An apparatus for estimation of a biomedical state of a body, comprising:
- a digital signal processor integrated into a biomedical device, said processor configured to;
use a dynamic state-space model configured with a physiological model of a body system to provide a prior probability distribution function;
receive sensor data input from at least two data sources;
iteratively use a probabilistic updater to integrate the sensor data as a fused data set and generate a posterior probability distribution function using all of;
(1) the fused data set;
(2) an application of Bayesian probability; and
(3) said prior probability distribution function; and
generate an output of a biomedical state using said posterior probability function.
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Abstract
A probabilistic digital signal processor using data from multiple instruments is described. In one example, a digital signal processor is integrated into a biomedical device. The processor is configured to: use a dynamic state-space model configured with a physiological model of a body system to provide a prior probability distribution function; receive sensor data input from at least two data sources; and iteratively use a probabilistic updater to integrate the sensor data as a fused data set and generate a posterior probability distribution function using all of: (1) the fused data set; (2) an application of Bayesian probability; and (3) the prior probability distribution function. The processor further generates an output of a biomedical state using the posterior probability function.
52 Citations
20 Claims
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1. An apparatus for estimation of a biomedical state of a body, comprising:
a digital signal processor integrated into a biomedical device, said processor configured to; use a dynamic state-space model configured with a physiological model of a body system to provide a prior probability distribution function; receive sensor data input from at least two data sources; iteratively use a probabilistic updater to integrate the sensor data as a fused data set and generate a posterior probability distribution function using all of; (1) the fused data set; (2) an application of Bayesian probability; and (3) said prior probability distribution function; and generate an output of a biomedical state using said posterior probability function. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for estimating a biomedical state of a body, comprising the steps of:
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providing a digital signal processor integrated into a biomedical device, said processor configured with a dynamic state-space model, wherein said dynamic state-space model comprises a physiological sub-model of a body system; generating a prior probability distribution function through use of said physiological sub-model; receiving sensor data input from at least two data sources; iteratively integrating the sensor data as fused data using a probabilistic updater; generating a posterior probability distribution function using all of; (1) the fused data; (2) an application of Bayesian probability; and (3) said prior probability distribution function; and outputting a biomedical state using said posterior probability function. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification