Sensor arrangement for direct or indirect optical determination of physical or chemical properties
First Claim
1. A sensor arrangement for direct or indirect optical determination of physical or chemical parameters, comprisinga radiation source supplying an excitation radiation for at least one indicator, a detector means for detection of a response radiation emitted by said indicator, in which contact between said radiation source and said indicator, and between said indicator and said detector, is exclusively established via said excitation radiation and said response radiation, and an indicator cell which comprises a capsule which is introduceable into body cavities, such as mouth, nose, stomach, intestine, blood vessels, bronchial tubes, urinary bladder, or which is implantable in the tissue, said capsule being permeable to a chemical substance or physical quantity to be measured, and at least one indicator in said capsule, wherein material used for said capsule is transparent to said excitation radiation and to said response radiation in the range of wavelengths between 600 and 1,300 nm, and wherein at least an outer layer of said capsule material is biocompatible.
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Abstract
In a sensor arrangement for direct or indirect optical determination of physical or chemical parameters, in human and animal bodies, the sensor arrangement including an indicator cell which is permeable to the chemical substance or physical quantity to be measured and which contains one or more indicators, a radiation source supplying the excitation radiation for the indicator, and a detector for detection of the response radiation emitted by the indicator, the indicator cell is configured as a capsule which may be introduced into body cavities, such as mouth, nose, stomach, intestine, blood vessels, bronchial tubes, urinary bladder, or which may be implanted in the tissue, and the material used for this capsule is transparent to excitation radiation and to the response radiation emitted by the indicator in the range of wavelengths between 600 and 1,300 nm, and the material of the capsule, or rather, its outer layer, is bio-compatible.
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15 Claims
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1. A sensor arrangement for direct or indirect optical determination of physical or chemical parameters, comprising
a radiation source supplying an excitation radiation for at least one indicator, a detector means for detection of a response radiation emitted by said indicator, in which contact between said radiation source and said indicator, and between said indicator and said detector, is exclusively established via said excitation radiation and said response radiation, and an indicator cell which comprises a capsule which is introduceable into body cavities, such as mouth, nose, stomach, intestine, blood vessels, bronchial tubes, urinary bladder, or which is implantable in the tissue, said capsule being permeable to a chemical substance or physical quantity to be measured, and at least one indicator in said capsule, wherein material used for said capsule is transparent to said excitation radiation and to said response radiation in the range of wavelengths between 600 and 1,300 nm, and wherein at least an outer layer of said capsule material is biocompatible.
Specification