SYSTEM AND APPARATUS FOR THE NON-INVASIVE MEASUREMENT OF BLOOD PRESSURE
First Claim
1. An apparatus for a non-invasive measurement of blood pressure comprising:
- a stochastic model of the autoregressive mobile average type (ARMA) circulatory function on the input signal;
a stochastic model of the autoregressive mobile average type (ARMA) blood pressure pulse on the Teager-Kaiser operator of the input signal;
clinical data including one or more of sex, age, height, and body mass index and its functions; and
a function estimation system based on ‘
random forests’
.
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Abstract
The present invention relates to a system for the estimation of the systolic (SBP), diastolic (DBP) and average (MAP) blood pressure. Said system establishes a physiological model of the pulse wave combined with its energy for, afterwards, generating a fixed length vector containing the previous model'"'"'s values with other variables related to the user like, for example, age, sex, height, weight, etc. . . . This fixed length vector is used as an input of a function estimator system based on “random forests” for the calculation of the three variables of interest. The main advantage of this function estimator lies in that it does not impose any restriction beforehand over the function to be estimated, and it is also very reliable with heterogeneous data, as in the present invention'"'"'s case.
76 Citations
43 Claims
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1. An apparatus for a non-invasive measurement of blood pressure comprising:
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a stochastic model of the autoregressive mobile average type (ARMA) circulatory function on the input signal; a stochastic model of the autoregressive mobile average type (ARMA) blood pressure pulse on the Teager-Kaiser operator of the input signal; clinical data including one or more of sex, age, height, and body mass index and its functions; and a function estimation system based on ‘
random forests’
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A computer-implemented, non-invasive method of measuring a blood pressure of a patient comprising:
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receiving clinical parameters of the patient; receiving an electronic photoplethysmography (PPG) signal captured from a measurement location of the patient; extracting measurement parameters from the electronic PPG signal; generating, by a processor, a fixed length vector based on the clinical parameters and the measurement parameters; and performing, by a processor, a classification analysis using the fixed length vector as a seed vector; and outputting the result of the classification analysis as an estimated blood pressure. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A computer readable storage medium having instructions stored thereon that, when executed by a processor, cause the processor to execute a method comprising:
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receiving clinical parameters of the patient; receiving a photoplethysmography (PPG) signal captured from a measurement location of the patient; extracting measurement parameters from the PPG signals; generating a fixed length vector based on the clinical parameters and the measurement parameters; and performing a classification analysis using the fixed length vector as a seed vector; and outputting the result of the classification analysis as an estimated blood pressure. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A non-invasive apparatus for measuring a blood pressure of a patient, comprising:
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a processor; and a computer readable storage medium coupled to the processor, wherein the storage medium includes instructions which, when executed by the processor, cause the processor to; receive clinical parameters of the patient; receive an electronic photoplethysmography (PPG) signal captured from a measurement location of the patient; extract measurement parameters from the electronic PPG signal; generate a fixed length vector based on the clinical parameters and the measurement parameters; and perform a classification analysis using the fixed length vector as a seed vector; and output the result of the classification analysis as an estimated blood pressure. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification