Arrangement and devices configured for carrying out optical absorption spectroscopy
First Claim
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1. A device configured to be inserted into tissue under a skin surface, comprising:
- a substrate including a material having a higher refractive index than the tissue;
a fluorescent material supported by the substrate, the fluorescent material configured to absorb light that is emitted onto the skin surface and further configured to convert the absorbed light into fluorescent light and emit the fluorescent light into the substrate such that the fluorescent light is totally internally reflected within the substrate when the device is in the tissue; and
a fluorescent-light-emitting region supported by the substrate configured to collect the totally internally reflected fluorescent light and further configured to emit the collected fluorescent light in a direction of the skin surface to leave the tissue.
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Abstract
An implantable fluorescent concentrator is configured to be inserted in vivo as a subcutaneous light source for optical absorption spectroscopy of surface-near tissue layers. As a result, certain and reliable results of the optical absorption spectroscopy are achievable. Furthermore, various analytes with different absorption properties are certainly and reliably quantifiable.
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Citations
15 Claims
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1. A device configured to be inserted into tissue under a skin surface, comprising:
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a substrate including a material having a higher refractive index than the tissue; a fluorescent material supported by the substrate, the fluorescent material configured to absorb light that is emitted onto the skin surface and further configured to convert the absorbed light into fluorescent light and emit the fluorescent light into the substrate such that the fluorescent light is totally internally reflected within the substrate when the device is in the tissue; and a fluorescent-light-emitting region supported by the substrate configured to collect the totally internally reflected fluorescent light and further configured to emit the collected fluorescent light in a direction of the skin surface to leave the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An arrangement, comprising:
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a device configured to be inserted into tissue under a skin surface, the device including; a substrate including a material having a higher refractive index than the tissue; a fluorescent material supported by the substrate, the fluorescent material configured to absorb light that is emitted onto the skin surface and further configured to convert the absorbed light into fluorescent light and emit the fluorescent light into the substrate such that the fluorescent light is totally internally reflected within the substrate when the device is in the tissue; and a fluorescent-light-emitting region supported by the substrate configured to collect the totally internally reflected fluorescent light and further configured to emit the collected fluorescent light in a direction of the skin surface; and a light-detecting device configured to emit light onto the skin surface and further configured to detect and receive the fluorescent light emitted by the device. - View Dependent Claims (14, 15)
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Specification