Broadband illuminator for oximetry, hemoglobin, met-hemoglobin, carboxy-hemoglobin, and other blood component monitoring
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Accused Products
Abstract
An ischemia detection system in two or more somatic measures, collected simultaneously or near-simultaneously, are provided for direct or computational comparison, in which light from light source A (103A) and source B (103B) is detected by a sensor (155), and a difference-weighted value is determined (167), thereby enhancing the value of the spectroscopic measurements over values taken individually and singly.
65 Citations
58 Claims
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1-23. -23. (canceled)
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24. A broadband method of spectroscopic monitoring in vivo comprising the steps of:
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(a) placing an oximeter probe on, in or near a tissue site; (b) illuminating the tissue site with broadband illumination from a broadband solid-state illumination source having a usable spectral bandwidth of at least 100 nm; (c) monitoring broadband light returning from a monitored site; and
,(d) determining a measure of hemoglobin oxygenation or other hemoglobin, tissue, or blood measures based upon said broadband light. - View Dependent Claims (25, 26, 29, 30, 31, 37, 38, 39, 40, 41, 42, 44, 45)
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27. A broadband method of spectroscopic monitoring in vivo comprising the steps of:
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(a) illuminating a tissue site with a broadband solid-state illumination source having at least a visible light portion with some wavelengths shorter than 700 nm; (b) monitoring at least a portion of the broadband light returning from the tissue site; and
,(c) determining an index of hemoglobin or other blood components based upon said returning light. - View Dependent Claims (28, 43)
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32. A broadband optical spectroscopy system comprising:
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(a) a broadband, solid-state illumination source for illuminating a target region having at least a visible light portion with at least some wavelengths shorter than 700 nm; (b) an optical collector for collecting broadband light returning from said target region and for transmitting a collected signal to a spectroscopic monitor; and (c) oximetry monitoring means for receiving and analyzing collected broadband light as a function of wavelength, said receiving and analyzing including at least a portion of received visible light, and for determining an oxygen saturation index of hemoglobin in said target region based upon said monitored visible light. - View Dependent Claims (34, 35, 50, 52, 53, 54, 57, 58)
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33. A broadband optical spectroscopy system comprising:
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(a) a broadband, solid-state illumination source, said source having a usable spectral bandwidth of at least 100 nm for illuminating a target region; (b) an optical collector for collecting broadband light returning from said target region and for transmitting a collected signal to a spectroscopic monitor; and
,(c) spectroscopic monitoring means for receiving and analyzing collected broadband light, and for determining an index or measure of hemoglobin or other blood components in said target region based upon said monitored light. - View Dependent Claims (51)
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36. A broadband spectroscopy method for monitoring in vivo comprising the steps of:
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(a) illuminating a tissue with a broadband solid-state illumination source having a usable spectral bandwidth of at least 100 nm; (b) monitoring broadband light returning from a monitored site, wherein the monitoring includes the step of monitoring an AC component of broadband light returning from a monitored tissue site; and
,(c) determining a pulse oximetry hemoglobin oxygenation index, or a measure of met-hemoglobin, carboxy-hemoglobin or other blood components, based upon said monitoring, where the step of determining is based at least in part upon said AC component of the returning light. - View Dependent Claims (46, 47, 48, 49, 55, 56)
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Specification