TISSUE PROFILE WELLNESS MONITOR
First Claim
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1. A physiological monitoring method comprising:
- emitting a plurality of wavelengths of light into a tissue site of a patient including pulsating blood;
detecting the light after attenuation by the tissue site;
normalizing at each of at least two of the plurality of wavelengths of light;
generating a tissue profile in response to the normalized plurality of wavelengths using a processor; and
analyzing the tissue profile using the processor to determine a patient wellness.
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Abstract
A tissue profile wellness monitor measures a physiological parameter, generates a tissue profile, defines limits and indicates when the tissue profile exceeds the defined limits. The physiological parameter is responsive to multiple wavelengths of optical radiation after attenuation by constituents of pulsatile blood flowing within a tissue site. The tissue profile is responsive to the physiological parameter. The limits are defined for at least a portion of the tissue profile.
117 Citations
18 Claims
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1. A physiological monitoring method comprising:
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emitting a plurality of wavelengths of light into a tissue site of a patient including pulsating blood; detecting the light after attenuation by the tissue site; normalizing at each of at least two of the plurality of wavelengths of light; generating a tissue profile in response to the normalized plurality of wavelengths using a processor; and analyzing the tissue profile using the processor to determine a patient wellness. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A patient monitoring device for generating and analyzing a tissue profile, the device comprising:
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a sensor comprising a light source that emits a plurality of wavelengths of light into a tissue site of a patient and a detector that detects the emitted light after attenuation by the tissue site; and a patient monitor in communication with the sensor, the patient monitor configured to; generate a tissue profile responsive to absorption of at least some of the emitted wavelengths using a processor; and analyze the tissue profile using the processor to determine patient wellness. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method of providing advance warning of deteriorating patient wellness, the method comprising:
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transmitting multiple wavelengths of light through a tissue site of a patient; measuring an attenuation by the tissue site of each of the wavelengths of transmitted light; determining, for each measured attenuation of each wavelength of transmitted light, a normalized plethysmograph (NP); selecting a reference wavelength from the multiple transmitted wavelengths; calculating a wellness indicator by normalizing the NP of each wavelength by the NP of the reference wavelength; and comparing the calculated wellness indicator to predetermined limits, wherein the wellness indicator exceeding the predetermined limits indicates advance warning of deteriorating patient wellness. - View Dependent Claims (17, 18)
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Specification