Method and system for determining bilirubin concentration
First Claim
1. A method for determining a bilirubin concentration of a patient, comprising the steps of:
- a) illuminating a portion of a skin of the patient with light;
b) detecting a frequency spectrum of light scattered from the skin;
c) determining, from first and second portions of the spectrum, a first parameter indicative of a blood content of the skin and a second parameter indicative of a melanin content of the skin;
d) determining, from a third portion of the spectrum, a third parameter indicative of an uncorrected bilirubin concentration; and
e) calculating a corrected bilirubin concentration based on the first, second and third parameters.
2 Assignments
0 Petitions
Accused Products
Abstract
A system and method embodying the invention can be used to detect a characteristic or condition of a patient. A method embodying the invention may include the steps of illuminating a portion of a skin of the patient with light, detecting a frequency spectrum of light scattered from the skin, determining, from first and second portions of the spectrum, a first parameter indicative of a blood content of the skin and a second parameter indicative of a melanin content of the skin, determining, from a third portion of the spectrum, a third parameter indicative of an uncorrected bilirubin concentration, and calculating a corrected bilirubin concentration based on the first, second and third parameters.
16 Citations
34 Claims
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1. A method for determining a bilirubin concentration of a patient, comprising the steps of:
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a) illuminating a portion of a skin of the patient with light;
b) detecting a frequency spectrum of light scattered from the skin;
c) determining, from first and second portions of the spectrum, a first parameter indicative of a blood content of the skin and a second parameter indicative of a melanin content of the skin;
d) determining, from a third portion of the spectrum, a third parameter indicative of an uncorrected bilirubin concentration; and
e) calculating a corrected bilirubin concentration based on the first, second and third parameters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for determining a bilirubin concentration in a patient, comprising:
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means for illuminating a portion of the patient'"'"'s skin with light;
means for detecting a frequency spectrum of light scattered from the skin;
means for determining, from first and second portions of the spectrum, a first parameter indicative of a blood content of the skin and a second parameter indicative of a melanin content of the skin;
means for determining, from a third portion of the spectrum, a third parameter indicative of an uncorrected bilirubin concentration; and
means for calculating a corrected bilirubin concentration based on the first, second and third parameters. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A system for measuring a bilirubin concentration of a patient by directing radiation onto a portion of a skin of the patient and analyzing scattered or reflected radiation returning from the skin, comprising:
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a radiation analyzing device for analyzing radiation scattered or reflected from the patient'"'"'s skin and for outputting radiation data;
a radiation source;
at least one radiation transmitting conduit for directing radiation from the radiation source to a portion of the patient'"'"'s skin;
at least one radiation receiving conduit for directing radiation scattered from the patient'"'"'s skin to the radiation analyzing device; and
means for calculating a bilirubin concentration of the patient based on an amplitude of the reflected or scattered radiation at first and second wavelength bands indicative of a blood content of the patient'"'"'s skin and a melanin content of the skin and on an amplitude of the reflected or scattered radiation at a third wavelength band indicative of the patient'"'"'s bilirubin concentration. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification