Systems and methods for non-invasive continuous blood pressure determination
First Claim
1. A method of determining blood pressure based on a PPG signal, the method comprising;
- receiving locations of pulses in the PPG signal;
measuring an area under a portion of one of the pulses, wherein;
the portion is smaller than a region occupied by the pulse between a starting point and ending point of the pulse, andthe measured area is an area under the pulse between the starting point of the pulse to the ending point of the pulse relative to a baseline of the pulse; and
determining blood pressure based on the measured area.
1 Assignment
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Accused Products
Abstract
According to some embodiments, systems and methods are provided for non-invasive continuous blood pressure determination. In some embodiments, a PPG signal is received and locations of pulses within the PPG signal are identified. An area within a particular pulse is measured. The area may be of just the upstroke, downstroke or the entire pulse. The area may be measured relative to a time-domain axis or a baseline of the pulse. The pulse may be split into multiple sections and the area of each section may be measured. The area of one portion of the pulse may correspond to systolic blood pressure while the area of another portion may correspond to diastolic blood pressure. Empirical data may be used to determine blood pressure from the measured area by applying calibration data measured by a suitable device.
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Citations
20 Claims
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1. A method of determining blood pressure based on a PPG signal, the method comprising;
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receiving locations of pulses in the PPG signal; measuring an area under a portion of one of the pulses, wherein; the portion is smaller than a region occupied by the pulse between a starting point and ending point of the pulse, and the measured area is an area under the pulse between the starting point of the pulse to the ending point of the pulse relative to a baseline of the pulse; and determining blood pressure based on the measured area. - View Dependent Claims (3, 6, 7, 8, 9, 10)
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2. A method of determining blood pressure based on a PPG signal, the method comprising:
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receiving locations of pulses in the PPG signal; measuring an area under a portion of one of the pulses, wherein; the portion is smaller than a region occupied by the pulse between a starting point and ending point of the pulse, and the measured area is an area under the pulse between the starting point of the pulse to the ending point of the pulse relative to a temporal axis; and determining blood pressure based on the measured area. - View Dependent Claims (4)
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5. A method of determining blood pressure based on a PPG signal, the method comprising:
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receiving locations of pulses in the PPG signal; measuring an area under a portion of one of the pulses, wherein measuring an area under the pulse comprises; splitting the pulse along the temporal axis; measuring a first area corresponding to a first portion of the split pulse, wherein the first portion is smaller than a region occupied by the pulse between a starting point and ending point of the pulse; measuring a second area corresponding to a second portion of the split pulse, wherein the second portion is smaller than a region occupied by the pulse between a starting point and ending point of the pulse; and determining the blood pressure based on one of the measure areas.
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11. A system for determining blood pressure based on a PPG signal, the system comprising:
processing circuitry capable of; receiving locations of pulses in the PPG signal; measuring an area under a portion of one of the pulses, wherein; the portion is smaller than a region occupied by the pulse between a starting point and ending point of the pulse, and the measured area is an area under the pulse between the starting point of the pulse to the ending point of the pulse relative to a baseline of the pulse; and determining blood pressure based on the measured area. - View Dependent Claims (13, 16, 17, 18, 19, 20)
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12. A system for determining blood pressure based on a PPG signal, the system comprising:
processing circuitry capable of; receiving locations of pulses in the PPG signal; measuring an area under a portion of one of the pulses, wherein; the portion is smaller than a region occupied by the pulse between a starting point and ending point of the pulse, and the measured area is an area under the pulse between the starting point of the pulse to the ending point of the pulse relative to a temporal axis; and determining blood pressure based on the measured area. - View Dependent Claims (14)
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15. A system for determining blood pressure based on a PPG signal, the system comprising:
processing circuitry capable of; receiving locations of pulses in the PPG signal; measuring an area under a portion of one of the pulses, wherein measuring an area under the pulse comprises; splitting the pulse along the temporal axis; measuring a first area corresponding to a first portion of the split pulse, wherein e first portion is smaller than a region occupied by the pulse between a starting point and ending point of the pulse; measuring a second area corresponding to a second portion of the split pulse, wherein the second portion is smaller than a region occupied by the pulse between a starting point and ending point of the pulse; and determining the blood pressure based on one of the measured areas.
Specification