Enhanced optical sensor module
First Claim
1. An implantable system, comprising:
- a plurality of light sources to transmit toward vascularized tissue, in a time multiplexed manner, light having a first wavelength of approximately 660 nm, light having a second wavelength of approximately 810 nm, light having a third wavelength of approximately 910 nm, and light having a fourth wavelength of approximately 980 nm;
one or more silicon light detector to detect light of the first, second, third and fourth wavelengths scattered by the vascularized tissue; and
one or more processor configured todetermine levels of blood oxygen saturation based on the detected scattered light of the first and third wavelengths;
determine levels of tissue oxygen saturation based on the detected scattered light of the first and third wavelengths;
determine levels of hemoglobin concentration for tissue based on the detected scattered light of the second wavelength; and
determine levels of tissue hydration based on the detected scattered light of the fourth wavelength.
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Accused Products
Abstract
An implantable system includes light sources to transmit toward vascularized tissue, in a time multiplexed manner, light having a first wavelength of approximately 660 nm, light having a second wavelength of approximately 810 nm, light having a third wavelength of approximately 910 nm, and light having a fourth wavelength of approximately 980 nm. The system includes one or more light detector to detect light of the first, second, third and fourth wavelengths scattered by vascularized tissue. Additionally, one or more processor is configured to determine levels of blood oxygen saturation based on the detected scattered light of the first and third wavelengths, determine levels of tissue oxygen saturation based on the detected scattered light of the first and third wavelengths, determine levels of hemoglobin concentration based on the detected scattered light of the second wavelength, and determine levels of tissue hydration based on the detected scattered light of the second and fourth wavelengths.
42 Citations
19 Claims
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1. An implantable system, comprising:
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a plurality of light sources to transmit toward vascularized tissue, in a time multiplexed manner, light having a first wavelength of approximately 660 nm, light having a second wavelength of approximately 810 nm, light having a third wavelength of approximately 910 nm, and light having a fourth wavelength of approximately 980 nm; one or more silicon light detector to detect light of the first, second, third and fourth wavelengths scattered by the vascularized tissue; and one or more processor configured to determine levels of blood oxygen saturation based on the detected scattered light of the first and third wavelengths; determine levels of tissue oxygen saturation based on the detected scattered light of the first and third wavelengths; determine levels of hemoglobin concentration for tissue based on the detected scattered light of the second wavelength; and determine levels of tissue hydration based on the detected scattered light of the fourth wavelength. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An implantable system, comprising:
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a plurality of light sources to transmit toward vascularized tissue, in a time multiplexed manner, light having at least two different wavelengths between and inclusive of approximately 610 nm and 910 nm, and light having a wavelength of approximately 980 nm; one or more silicon light detector to detect light of the at least two different wavelengths between and inclusive of approximately 610 nm and 910 nm, and light having the wavelength of approximately 980 nm, scattered by the vascularized tissue; and one or more processor configured to detect changes in tissue hydration and changes in at least one of blood oxygen saturation, tissue oxygen saturation and levels of hemoglobin concentration for tissue, based on the scattered light of the at least two different wavelengths between and inclusive of approximately 610 nm and 910 nm, and the scattered light of the wavelength of approximately 980 nm, detected by the one or more silicon light detector.
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11. A method for use with an implantable system, comprising:
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(a) transmitting toward vascularized tissue, in a time multiplexed manner, light having a first wavelength of approximately 660 nm, light having a second wavelength of approximately 810 nm, light having a third wavelength of approximately 910 nm, and light having a fourth wavelength of approximately 980 nm; (b) detecting light of the first, second, third and fourth wavelengths scattered by the vascularized tissue using one or more silicon light detector; (c) determining a level of blood oxygen saturation based on the detected scattered light of the first and third wavelengths; (d) determining a level of tissue oxygen saturation based on the detected scattered light of the first and third wavelengths; (e) determining a level of hemoglobin concentration for tissue based on the detected scattered light of the second wavelength; and (f) determining a level of tissue hydration based on the detected scattered light of the fourth wavelength; wherein steps (c), (d), (e) and (f) are performed using one or more processor. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method for use with an implantable system for monitoring tissue hydration, comprising:
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(a) transmitting toward vascularized tissue, in a time multiplexed manner, light having at least two different wavelengths between and inclusive of approximately 610 nm and 910 nm, and light having a wavelength of approximately 980 nm; (b) using one or more silicon detector to detect light of the at least two different wavelengths between and inclusive of approximately 610 nm and 910 nm, and light having the wavelength of approximately 980 nm, scattered by the vascularized tissue; and (c) detecting changes in tissue hydration and changes in at least one of blood oxygen saturation, tissue oxygen saturation and levels of hemoglobin concentration for tissue, based on the detected scattered light of the at least two different wavelengths between and inclusive of approximately 610 nm and 910 nm, and the scattered light of the wavelength of approximately 980 nm, as detected by the one or more silicon light detector; wherein step (c) is performed using one or more processor.
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Specification