Photon density wave based determination of physiological blood parameters
First Claim
1. A system for measuring a physiological parameter of blood in a patient, the system comprising:
- a transmission module configured to emit a plurality of photon density waves into tissue of the patient from a plurality of modulated light sources;
a receiver module configured to detect characteristics of the plurality of photon density waves; and
a processing module configured to;
identify time based characteristics of a pulsatile perturbation of the tissue based on the characteristics of the plurality of photon density waves; and
identify a value of the physiological parameter based on at least the characteristics of the pulsatile perturbation of the tissue and the characteristics of the plurality of photon density waves.
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Accused Products
Abstract
A system for measuring a physiological parameter of blood in a patient is presented. The system includes a transmission module configured to emit a plurality of photon density waves into tissue of the patient from a plurality of modulated light sources. The system also includes a receiver module configured to detect characteristics of the plurality of photon density waves. The system also includes a processing module configured to identify characteristics of a pulsatile perturbation of the tissue based on the characteristics of the plurality of photon density waves, and identify a value of the physiological parameter based on at least the characteristics of the pulsatile perturbation of the tissue and the characteristics of the plurality of photon density waves.
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Citations
20 Claims
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1. A system for measuring a physiological parameter of blood in a patient, the system comprising:
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a transmission module configured to emit a plurality of photon density waves into tissue of the patient from a plurality of modulated light sources; a receiver module configured to detect characteristics of the plurality of photon density waves; and a processing module configured to; identify time based characteristics of a pulsatile perturbation of the tissue based on the characteristics of the plurality of photon density waves; and identify a value of the physiological parameter based on at least the characteristics of the pulsatile perturbation of the tissue and the characteristics of the plurality of photon density waves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for measuring a physiological parameter of blood in a patient, the system comprising:
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a transmission module configured to emit a first modulated optical signal and a second modulated optical signal into tissue of the patient; a receiver module configured to detect the first modulated optical signal and the second modulated optical signal propagated in the tissue during a pulsatile perturbation; a processing module configured to; process the detected first modulated optical signal and the detected second modulated optical signal to determine at least an amplitude and a phase delay of both the detected first modulated optical signal and the detected second modulated optical signal; determine time based characteristics of the pulsatile perturbation of the tissue based on at least the amplitude and the phase delay of both the detected first modulated optical signal and the detected second modulated optical signal; and determine a value of the physiological parameter based on at least the characteristics of the pulsatile perturbation of the tissue and the amplitude and the phase delay of both the detected first modulated optical signal and the detected second modulated optical signal. - View Dependent Claims (13, 14, 15, 16)
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17. A method of operating a system for measuring a physiological parameter of blood in a patient, the method comprising:
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emitting a plurality of photon density waves into tissue of the patient from a plurality of modulated light sources; detecting characteristics of the plurality of photon density waves; identifying time based characteristics of a pulsatile perturbation of the tissue based on the characteristics of the plurality of photon density waves; and identifying a value of the physiological parameter based on at least the characteristics of the pulsatile perturbation of the tissue and the characteristics of the plurality of photon density waves. - View Dependent Claims (18, 19, 20)
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Specification