Probabilistic parameter estimation using fused data apparatus and method of use thereof
First Claim
1. A method for estimating state of a biomedical system, comprising the steps of:
- providing a cardiac stroke volume analyzer, said cardiac stroke volume analyzer comprising a system processor, said cardiac stroke volume analyzer further comprising;
a probabilistic processor; and
a dynamic state-space model;
connecting said system processor to;
(1) an auxiliary blood pressure cuff medical device and (2) an auxiliary pulse oximeter medical device;
said cardiac stroke volume analyzer receiving discrete first cardiovascular input data, from said auxiliary blood pressure cuff medical device, related to a first sub-system of the biomedical system;
said cardiac stroke volume analyzer receiving discrete second cardiovascular input data, from said auxiliary pulse oximeter medical device, related to a second sub-system of the biomedical system, fusing the first input data and the second input data into fused data using said system processor, said step of fusing comprising the step of said probabilistic processor converting the fused data into a probability distribution function indirectly related to an output of either of the blood pressure cuff and the pulse oximeter medical device;
at least one probabilistic model, of said dynamic state-space model, operating on said probability distribution function, iteratively circulating said probability distribution function in said dynamic state-space model in synchronization with receipt of at least one of;
updated first cardiovascular input data from said auxiliary blood pressure cuff medical device; and
updated second cardiovascular input data from said pulse oximeter medical device; and
said system processor processing the probability distribution function to generate an output related to the state of the biomedical system, said output comprising a left ventricle stroke volume of a heart of a patient and arterial compliance of the patient, said output displayed to at least one of a patient and a doctor.
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Abstract
A probabilistic digital signal processor using data from multiple instruments is described. In one example, an analyzer is configured to: receive discrete first and second input data, related to a first and second sub-system of the system, from a first and second instrument, respectively. A system processor is used to fuse the first and second input data into fused data. The system processor optionally includes: (1) a probabilistic processor configured to convert the fused data into at least two probability distribution functions and (2) a dynamic state-space model, the dynamic state-space model including at least one probabilistic model configured to operate on the at least two probability distribution functions. The system processor iteratively circulates the at least two probability distribution functions in the dynamic state-space model in synchronization with receipt of updated input data, processes the probability distribution functions, and generates an output related to the state of the system.
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Citations
14 Claims
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1. A method for estimating state of a biomedical system, comprising the steps of:
- providing a cardiac stroke volume analyzer, said cardiac stroke volume analyzer comprising a system processor, said cardiac stroke volume analyzer further comprising;
a probabilistic processor; and
a dynamic state-space model;
connecting said system processor to;
(1) an auxiliary blood pressure cuff medical device and (2) an auxiliary pulse oximeter medical device;
said cardiac stroke volume analyzer receiving discrete first cardiovascular input data, from said auxiliary blood pressure cuff medical device, related to a first sub-system of the biomedical system;
said cardiac stroke volume analyzer receiving discrete second cardiovascular input data, from said auxiliary pulse oximeter medical device, related to a second sub-system of the biomedical system, fusing the first input data and the second input data into fused data using said system processor, said step of fusing comprising the step of said probabilistic processor converting the fused data into a probability distribution function indirectly related to an output of either of the blood pressure cuff and the pulse oximeter medical device;
at least one probabilistic model, of said dynamic state-space model, operating on said probability distribution function, iteratively circulating said probability distribution function in said dynamic state-space model in synchronization with receipt of at least one of;
updated first cardiovascular input data from said auxiliary blood pressure cuff medical device; and
updated second cardiovascular input data from said pulse oximeter medical device; and
said system processor processing the probability distribution function to generate an output related to the state of the biomedical system, said output comprising a left ventricle stroke volume of a heart of a patient and arterial compliance of the patient, said output displayed to at least one of a patient and a doctor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- providing a cardiac stroke volume analyzer, said cardiac stroke volume analyzer comprising a system processor, said cardiac stroke volume analyzer further comprising;
Specification