Detection of biological molecules using boronate-based chemical amplification and optical sensors
First Claim
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1. A method of preparing a biocompatible polymer matrix for immobilizing a compound of the formula wherein:
- D1 is a dye selected from the group consisting of fluorescent dyes, luminescent dyes and calorimetric dyes;
R1, R3 and R4 are each independently substituents which alter the electrode properties of the groups to which they are attached or are functional groups which can form covalent linkages to the surrounding polymer matrix;
each R2 is a member independently selected from the group consisting of hydrogen or C1-C4 alkyl;
each L1 and L2 is a linking group having from zero to four contiguous atoms selected from the group consisting of carbon, oxygen, nitrogen, sulfur and phosphorus;
Z is a heteroatom selected from the group consisting of nitrogen, sulfur, oxygen and phosphorus; and
x is an integer from zero to four, said method comprising;
admixing the compound of Formula I with a diisocyanate and a hydrophilic polymer, wherein said hydrophilic polymer is a member selected from the group consisting of a hydrophilic polymer diol, a hydrophilic polymer diamine and combinations thereof, wherein said diisocyanate comprises about 50 mol % of the reactants in said admixture to form said biocompatible polymer matrix.
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Abstract
Methods are provided for the determination of the concentration of biological levels of polyhydroxylated compounds, particularly glucose. The methods utilize an amplification system that is an analyte transducer immobilized in a polymeric matrix, where the system is implantable and biocompatible. Upon interrogation by an optical system, the amplification system produces a signal capable of detection external to the skin of the patient. Quantitation of the analyte of interest is achieved by measurement of the emitted signal.
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13 Claims
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1. A method of preparing a biocompatible polymer matrix for immobilizing a compound of the formula
wherein: -
D1 is a dye selected from the group consisting of fluorescent dyes, luminescent dyes and calorimetric dyes;
R1, R3 and R4 are each independently substituents which alter the electrode properties of the groups to which they are attached or are functional groups which can form covalent linkages to the surrounding polymer matrix;
each R2 is a member independently selected from the group consisting of hydrogen or C1-C4 alkyl;
each L1 and L2 is a linking group having from zero to four contiguous atoms selected from the group consisting of carbon, oxygen, nitrogen, sulfur and phosphorus;
Z is a heteroatom selected from the group consisting of nitrogen, sulfur, oxygen and phosphorus; and
x is an integer from zero to four, said method comprising;
admixing the compound of Formula I with a diisocyanate and a hydrophilic polymer, wherein said hydrophilic polymer is a member selected from the group consisting of a hydrophilic polymer diol, a hydrophilic polymer diamine and combinations thereof, wherein said diisocyanate comprises about 50 mol % of the reactants in said admixture to form said biocompatible polymer matrix. - View Dependent Claims (2, 3, 4)
admixing a diisocyanate, a hydrophilic polymer, wherein said hydrophilic polymer is a member selected from the group consisting of a hydrophilic polymer diol, a hydrophilic polymer diamine and combinations thereof, and, optionally, adding a chain extender, wherein said diisocyanate comprises about 50 mol % of the reactants in said admixture to form said biocompatible polymer matrix with a hydrogel coating, said hydrogel having a water pickup of from about 120% to about 400% by weight.
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4. A method in accordance with claim 1, further comprising admixing a siloxane polymer having amino, hydroxyl or carboxylic acid functional groups at the chain termini.
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5. A biocompatible polymer matrix comprising a compound of the formula
wherein: -
D1 is a dye selected from the group consisting of fluorescent dyes, luminescent dyes and colorimetric dyes;
R1, R3 and R4 are each independently substituents which alter the electronic properties of the groups to which they are attached or are functional groups which can form covalent linkages to the surrounding polymer matrix;
each R2 is a member independently selected from the group consisting of hydrogen or C1-C4 alkyl;
each L1 and L2 is a linking group having from zero to four contiguous atoms selected from the group consisting of carbon, oxygen, nitrogen, sulfur and phosphorus;
Z is a heteroatom selected from the group consisting of nitrogen, sulfur, oxygen and phosphorus;
and x is an integer from zero to four. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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Specification