PATIENT MONITOR FOR MONITORING MICROCIRCULATION
First Claim
1. A method for monitoring microcirculation in a patient, the method comprising:
- emitting one or more beams of light from a light source;
detecting the one or more beams of light after the one or more beams of light have interacted with an eyelid;
calculating oxygen saturation at the eyelid using the detected one or more beams of light;
calculating a perfusion index at the eyelid using the detected one or more beams of light; and
calculating a flow of blood at the eyelid using the detected one or more beams of light.
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Accused Products
Abstract
A patient monitor capable of measuring microcirculation at a tissue site includes a light source, a beam splitter, a photodetector and a patient monitor. Light emitted from the light source is split into a reference arm and a sample arm. The light in the sample arm is directed at a tissue site, such as an eyelid. The reflected light from the tissue site is interfered with the light from the reference arm. The photodetector measures the interference of the light from both the sample arm and the reference arm. The patient monitor uses the measurements from the photodetector to calculate the oxygen saturation at the tissue site and monitor the microcirculation at the tissue site.
213 Citations
15 Claims
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1. A method for monitoring microcirculation in a patient, the method comprising:
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emitting one or more beams of light from a light source; detecting the one or more beams of light after the one or more beams of light have interacted with an eyelid; calculating oxygen saturation at the eyelid using the detected one or more beams of light; calculating a perfusion index at the eyelid using the detected one or more beams of light; and calculating a flow of blood at the eyelid using the detected one or more beams of light. - View Dependent Claims (2, 3, 6, 7, 8, 10, 11, 14, 15)
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4. (canceled)
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5. (canceled)
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9. A microcirculation monitoring device configured to monitor the microcirculation of a patient at a tissue site, the monitoring device comprising:
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a light source configured to emit one or more beams of light; and a detector in communication with a patient monitor, the detector configured to detect the one or more beams of light following an interaction of the one or more beams of light with an eyelid, the patient monitor configured to; calculate an oxygen saturation of the eyelid using the detected one or more beams of light; calculate a perfusion index of the eyelid using the detected one or more beams of light; and calculate a flow of blood of the eyelid using the detected one or more beams of light.
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12. (canceled)
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13. (canceled)
Specification