METHODS AND SYSTEMS FOR CONTINUOUS NON-INVASIVE BLOOD PRESSURE MEASUREMENT USING PHOTOACOUSTICS
First Claim
Patent Images
1. A method for determining blood pressure of a subject, the method comprising:
- receiving a photoacoustic signal;
determining, using processing equipment, one or more measurements of a physical property of a region of interest of the subject based on the photoacoustic signal; and
determining, using processing equipment, blood pressure based on the one or more measurements.
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Abstract
A patient monitoring system may use photoacoustic sensing to determine one or more physiological parameters of a subject. The system may detect an acoustic pressure response generated by the application and absorption of light, which may be used to identify the size of a blood vessel. The blood pressure of a subject may calculated based on the measured blood vessel size and calibration values. One or more calibration values may be determined based on a known relationship between a change in blood vessel size and a change in blood pressure.
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Citations
20 Claims
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1. A method for determining blood pressure of a subject, the method comprising:
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receiving a photoacoustic signal; determining, using processing equipment, one or more measurements of a physical property of a region of interest of the subject based on the photoacoustic signal; and determining, using processing equipment, blood pressure based on the one or more measurements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A patient monitoring system comprising:
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an interface configured to receive a photoacoustic signal; and a processor configured to; determine one or more measurements of a physical property of a region of interest of the subject based on the photoacoustic signal; and determine blood pressure based on the one or more measurements. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification