Apparatus for spectrometric based oximetry
First Claim
1. A near infrared spectrophotometric sensor assembly for non-invasive monitoring of blood oxygenation levels in a subject'"'"'s body tissue, said assembly comprising:
- a pad;
at least one light source operative to emit light signals of a plurality of different wavelengths through a source aperture within the pad;
at least one light detector operative to detect light emitted by the light source and passed through the subject'"'"'s body tissue;
electromagnetic interference shielding disposed around at least a portion of the light detector;
a detector housing including a base and a cap, wherein the base includes a well sized to receive at least a portion of the light detector, and the cap is sized to receive a remainder of the light detector and shielding not received within the base well; and
wherein the base and the cap mate to enclose the light detector and shielding, and the housing is positioned relative to the pad so that the light detector is aligned with a light detector aperture disposed within the pad;
wherein the base includes a window comprising an optically transparent material that allows light to pass there through and be sensed by the light detector.
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0 Petitions
Accused Products
Abstract
A spectrophotometric sensor assembly for non-invasive monitoring of a blood metabolite within a subject'"'"'s body tissue is provided that includes a pad, a light source, and a light detector The light source is operative to emit light signals of a plurality of different wavelengths. The light detector is operative to detect light emitted by the light source and passed through the subject'"'"'s body tissue. The light detector is at least partially enclosed in EMI shielding. In some embodiments, the light detector and EMI shielding are disposed in a detector housing that encloses the light detector and shielding. The housing is aligned with a detector aperture disposed in the pad.
61 Citations
26 Claims
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1. A near infrared spectrophotometric sensor assembly for non-invasive monitoring of blood oxygenation levels in a subject'"'"'s body tissue, said assembly comprising:
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a pad; at least one light source operative to emit light signals of a plurality of different wavelengths through a source aperture within the pad; at least one light detector operative to detect light emitted by the light source and passed through the subject'"'"'s body tissue; electromagnetic interference shielding disposed around at least a portion of the light detector; a detector housing including a base and a cap, wherein the base includes a well sized to receive at least a portion of the light detector, and the cap is sized to receive a remainder of the light detector and shielding not received within the base well; and wherein the base and the cap mate to enclose the light detector and shielding, and the housing is positioned relative to the pad so that the light detector is aligned with a light detector aperture disposed within the pad; wherein the base includes a window comprising an optically transparent material that allows light to pass there through and be sensed by the light detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A spectrophotometric sensor assembly for non-invasive monitoring of a blood metabolite within a subject'"'"'s body tissue, said assembly comprising:
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a pad having at least one source aperture and at least one detector aperture; at least one light source operative to emit light signals of a plurality of different wavelengths, the light source aligned with the source aperture; at least one light detector operative to detect light emitted by the light source and passed through the subject'"'"'s body tissue; electromagnetic interference shielding disposed around at least a portion of the light detector; a detector housing including a first member and a second member, wherein the first member includes a well sized to receive a portion of the light detector and electromagnetic shielding, wherein the second member includes a well sized to receive a remainder of the light detector and electromagnetic shielding not received within the first member well; and wherein the first member and the second member mate to enclose the light detector and electromagnetic shielding, and the housing is positioned relative to the pad so that the light detector is aligned with the light detector aperture; wherein the first member includes a window comprising an optically transparent material that allows light to pass there through and be sensed by the light detector. - View Dependent Claims (18, 19, 20, 21)
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22. A near infrared spectrophotometric sensor assembly for non-invasive monitoring of blood oxygenation levels in a subject'"'"'s body tissue, said assembly comprising:
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a pad; a light source operative to emit light signals of a plurality of different wavelengths through a source aperture in the pad; a light detector operative to detect light emitted by the light source and passed through the subject'"'"'s body tissue, the light detector at least partially enclosed in EMI shielding, and the light detector and EMI shielding disposed in a detector housing having a base and a cap that mate to enclose the light detector and shielding wherein a portion of the light detector is received in each of the base and the cap, and the housing is aligned with a detector aperture in the pad; wherein the base includes a window comprising an optically transparent material that allows light to pass there through and be sensed by the light detector. - View Dependent Claims (23, 24)
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25. A near infrared spectrophotometric sensor assembly for non-invasive monitoring of blood oxygenation levels in a subject'"'"'s body tissue, said assembly comprising:
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a pad having a source aperture, a first detector aperture, and a second detector aperture; a light source operative to emit light signals of a plurality of different wavelengths, the light source aligned with the source aperture; a first light detector at least partially enclosed in EMI shielding, and the first light detector and EMI shielding enclosed within a first detector housing, and the first detector housing is positioned relative to the pad so that the first light detector is aligned with the first detector aperture; and a second light detector at least partially enclosed in EMI shielding, and the second light detector and EMI shielding enclosed within a second detector housing, and the second detector housing is positioned relative to the pad so that second light detector is aligned with the second detector aperture; wherein at least one of the first detector housing and the second detector housing includes a window comprising an optically transparent material that allows light to pass there through and be sensed by the respective light detector and a base and a cap each receives a portion of the respective light detector. - View Dependent Claims (26)
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Specification