System and method for attaching a sensor to a patient's skin
First Claim
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1. A spectrophotometric sensor, comprising:
- a generally planar substrate having a first opening;
a light emitter positioned within the first opening to be optically coupled to a tissue site;
one or more photodetectors positioned on the substrate outside the first opening;
a light scattering medium having a second opening substantially aligned with the first opening and being disposed proximate to the substrate, wherein the light scattering medium is configured to contact the tissue site and increase the effective detection area of the one or more photodetectors; and
a light barrier configured to surround the light emitter such that light does not propagate directly from the light emitter to the one or more photodetectors.
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Abstract
A method and apparatus for affixing a sensor adjacent a tissue site is disclosed. In an embodiment, the spectrophotometric sensor comprises, a sensor body, one or more light emitters, one or more photodetectors, and a light scattering medium capable of increasing at least one of the effective detection area of the one or more photodetectors or the effective emission area of the one or more light emitters.
939 Citations
31 Claims
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1. A spectrophotometric sensor, comprising:
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a generally planar substrate having a first opening; a light emitter positioned within the first opening to be optically coupled to a tissue site; one or more photodetectors positioned on the substrate outside the first opening; a light scattering medium having a second opening substantially aligned with the first opening and being disposed proximate to the substrate, wherein the light scattering medium is configured to contact the tissue site and increase the effective detection area of the one or more photodetectors; and a light barrier configured to surround the light emitter such that light does not propagate directly from the light emitter to the one or more photodetectors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 21, 22)
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13. A spectrophotometric sensor, comprising:
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a generally planar substrate having a first opening; a photodetector positioned within the first opening to be optically coupled to a tissue site; one or more light emitters positioned on the substrate outside the first opening; a light scattering medium having a second opening substantially aligned with the first opening and being disposed proximate to the substrate, wherein the light scattering medium is configured to be in contact with the tissue site and to increase the effective emission area of the one or more light emitters; and a light barrier configured to surround the photodetector such that light does not propagate directly from the one or more light emitters to the photodetector. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 23, 24, 25)
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26. A spectrophotometric sensor, comprising:
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a substrate body having a plurality of openings; at least one light emitter positioned over at least one opening, wherein the at least one light emitter is optically coupled to a tissue site; at least one photodetector positioned over at least one other opening and adjacent to the at least one light emitter such that the at least one photodetector is on a same side of the substrate body as the at least one light emitter, wherein the at least one photodetector is optically coupled to a light scattering medium; and an adhesive member disposed on an opposite side of the substrate body as the at least one photodetector and configured to form a patient contact surface of the spectrophotometric sensor, wherein the adhesive member comprises the light scattering medium, and wherein the light scattering medium is configured to increase at least one of the effective detection area of the at least one photodetector or the effective emission area of the at least one light emitter. - View Dependent Claims (27, 28, 29, 30, 31)
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Specification