Sensor system
First Claim
Patent Images
1. A multivariable sensor system for simultaneously detecting one or more analytes in a fluid of a person, said sensor system comprising:
- an elongated sensor body including an array of spaced apart cavities;
a plurality of optode sensing microbeads disposed in at least one cavity, said plurality of optode sensing microbeads comprising a first set of microbeads that include an indicator material and a detection substance;
a reference element disposed in at least one other cavity for providing a standard color by which a color change of said plurality of optode sensing microbeads is compared; and
a multilayered analyte-permeable membrane covering each of said cavities;
wherein said detection substance comprises an enzyme that reacts with the analyte or catalyzes the reaction of the analyte to produce a detectable reaction product;
wherein said at least one indicator material comprises a light-absorbing, pH-sensitive dye that undergoes a color change in response to the analyte or to the detectable reaction product thereof;
wherein the color change is reversible depending upon the concentration of the one or more analytes.
3 Assignments
0 Petitions
Accused Products
Abstract
A sensor probe suited for implanting into the skin of a person includes a sensor body which may be formed from a polymer which includes 2-hydroxyethyl methacrylate (HEMA). A sensing system is supported by the body. The sensing system exhibits a detectable change when the probe is exposed to the analyte in the fluid. The sensing system may include an enzyme capable of catalyzing a reaction of the analyte to form a reaction product and a dye system which absorbs in the infrared region of the spectrum in response to the reaction product.
-
Citations
11 Claims
-
1. A multivariable sensor system for simultaneously detecting one or more analytes in a fluid of a person, said sensor system comprising:
-
an elongated sensor body including an array of spaced apart cavities; a plurality of optode sensing microbeads disposed in at least one cavity, said plurality of optode sensing microbeads comprising a first set of microbeads that include an indicator material and a detection substance; a reference element disposed in at least one other cavity for providing a standard color by which a color change of said plurality of optode sensing microbeads is compared; and a multilayered analyte-permeable membrane covering each of said cavities; wherein said detection substance comprises an enzyme that reacts with the analyte or catalyzes the reaction of the analyte to produce a detectable reaction product; wherein said at least one indicator material comprises a light-absorbing, pH-sensitive dye that undergoes a color change in response to the analyte or to the detectable reaction product thereof; wherein the color change is reversible depending upon the concentration of the one or more analytes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A multivariable sensor system for simultaneously detecting one or more analytes in a fluid of a person, said sensor system comprising:
-
an elongated sensor body including an array of spaced apart cavities; a plurality of sensing optode microbeads disposed in at least one cavity, said plurality of sensing optode microbeads comprising a first set of microbeads that include an indicator material and a second set of microbeads that include a detection substance; a plurality of reference microbeads disposed in at least one other cavity for providing a standard color by which a color change of said plurality of optode sensing microbeads is compared; and a multilayered analyte-permeable membrane covering each of said cavities; wherein said detection substance comprises an enzyme that reacts with the analyte or catalyzes the reaction of the analyte to produce a detectable reaction product; wherein said at least one indicator material comprises a light-absorbing, pH-sensitive dye that undergoes a color change in response to the analyte or to the detectable reaction product thereof; wherein the color change is reversible depending upon the concentration of the one or more analytes.
-
Specification