Assessing a subject's circulatory system
First Claim
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1. An apparatus comprising:
- an input interface configured to provide signals from at least two sensors for at least two postures including;
signals, dependent upon blood presence, from a first sensor when a subject is in a first posture;
signals, dependent upon blood presence, from the first sensor when the subject is in a second posture;
signals, dependent upon blood presence, from a second sensor when the subject is in the first posture; and
signals, dependent upon blood presence from the second sensor when the subject is in the second posture;
processing circuitry configured to determine and output a metric by combining, according to pre-defined calibration data the provided signals; and
a memory storing multiple sets of calibration data comprising a set of calibration data for each of a plurality of predetermined standard sequences of different body postures;
wherein the processing circuitry is configured to determine and output a metric for a particular predetermined standard sequence of different body postures by combining, according to calibration data for the particular predetermined standard sequence of different body postures, the provided signals.
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Abstract
An apparatus including an input interface configured to provide signals from at least two sensors for at least two postures including: signals, dependent upon blood presence, from a first sensor when a subject is in a first posture; signals, dependent upon blood presence, from the first sensor when the subject is in a second posture; signals, dependent upon blood presence, from a second sensor when the subject is in the first posture; and signals, dependent upon blood presence, from the second sensor when the subject is in the second posture; and processing circuitry configured to determine and output a metric by combining, according to predefined calibration data the provided signals.
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Citations
36 Claims
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1. An apparatus comprising:
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an input interface configured to provide signals from at least two sensors for at least two postures including; signals, dependent upon blood presence, from a first sensor when a subject is in a first posture; signals, dependent upon blood presence, from the first sensor when the subject is in a second posture; signals, dependent upon blood presence, from a second sensor when the subject is in the first posture; and signals, dependent upon blood presence from the second sensor when the subject is in the second posture; processing circuitry configured to determine and output a metric by combining, according to pre-defined calibration data the provided signals; and a memory storing multiple sets of calibration data comprising a set of calibration data for each of a plurality of predetermined standard sequences of different body postures;
wherein the processing circuitry is configured to determine and output a metric for a particular predetermined standard sequence of different body postures by combining, according to calibration data for the particular predetermined standard sequence of different body postures, the provided signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system comprising:
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at least a first sensor and a second sensor; and an apparatus comprising; an input interface configured to provide signals from at least the first sensor and the second sensor for at least two postures including; signals, dependent upon blood presence, from the first sensor when a subject is in a first posture; signals, dependent upon blood presence, from the first sensor when the subject is in a second posture; signals, dependent upon blood presence, from the second sensor when the subject is in the first posture; and signals, dependent upon blood presence from the second sensor when the subject is in the second posture; processing circuitry configured to determine and output a metric by combining, according to pre-defined calibration data the provided signals; and a mentor storing multiple sets of calibration data comprising a set of calibration data for each of a plurality of predetermined standard sequences of different body postures, wherein the processing circuitry is configured to determine and output a metric for a particular predetermined standard sequence of different body postures by combining, according to calibration data for the particular predetermined standard sequence of different body postures, the provided signals. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. A method comprising:
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attaching at least a first optical sensor and a second optical sensors to a subject; and connecting the optical sensors to an apparatus comprising; an input interface configured to provide signals from at least the first sensor and the second sensor for at least two postures including; signals, dependent upon blood presence, from the first sensor when a subject is in a first posture; signals, dependent upon blood presence, from the first sensor when the subject is in a second posture; signals, dependent upon blood presence, from the second sensor when the subject is in the first posture; signals, dependent upon blood presence from the second sensor when the subject is in the second posture; and processing circuitry configured to determine and output a metric by combining, according to pre-defined calibration data the provided signals; and a memory storing multiple sets of calibration data comprising a set of calibration data for each of a plurality of predetermined standard sequences of different body postures, wherein the processing circuitry is configured to determine and output a metric for a particular predetermined standard sequence of different body postures by combining, according to calibration data for the particular predetermined standard sequence of different body postures, the provided signals, and moving the subject through a predetermined ordered sequence of different postures including the first and second postures. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. An apparatus comprising:
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an input interface configured to provide signals from at least two sensors for at least two postures including; signals, dependent upon blood presence, from a first sensor when a subject is in a first posture; signals, dependent upon blood presence, from the first sensor when the subject is in a second posture; signals, dependent upon blood presence, from a second sensor when the subject is in the first posture; and signals, dependent upon blood presence from the second sensor when the subject is in the second posture; and processing circuitry configured to determine and output a metric by combining, according to pre-defined calibration data the provided signals, wherein the processing circuitry is configured to perform pattern matching between patterns produced by the provided signals during a kinematic protocol involving at least a change between first, second and third postures and normal circulatory response patterns. - View Dependent Claims (36)
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Specification