Drug elution for in vivo protection of bio-sensing analytes
First Claim
1. A sensor for measurement of an analyte in a medium within a living animal, the sensor comprising:
- a sensor housing;
a light source within the sensor housing configured to emit excitation light;
an analyte indicator covering a portion of the sensor housing, wherein the analyte indicator comprises one or more indicator molecules that reversibly bind the analyte, are positioned to be irradiated by the excitation light, and are configured to emit light indicative of the amount of the analyte in the medium within the living animal;
a photodetector within the sensor housing, wherein the photodetector is sensitive to light emitted by the one or more indicator molecules and configured to generate a signal indicative of the amount of the analyte in the medium within the living animal;
at least one drug eluting polymer matrix that covers a portion of the sensor housing and is separate and distinct from the analyte indicator, wherein the drug eluting polymer matrix (a) has a preformed shape and is applied to the sensor housing attaching the preformed shape to the sensor housing or (b) is applied to the sensor housing via dip coating or spray coating; and
one or more therapeutic agents that reduce deterioration of the analyte indicator, are dispersed within the drug eluting polymer matrix, and include an anti-inflammatory drug.
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Accused Products
Abstract
A sensor (e.g., an optical sensor) that may be implanted within a living animal (e.g., a human) and may be used to measure an analyte (e.g., glucose or oxygen) in a medium (e.g., interstitial fluid, blood, or intraperitoneal fluid) within the animal. The sensor may include a sensor housing, an analyte indicator covering at least a portion of the sensor housing, and one or more therapeutic agents. The one or more therapeutic agents may reduce deterioration of the analyte indicator. The one or more therapeutic agents may be incorporated within the analyte indicator, a membrane covering at least a portion of the analyte indicator, and/or one or more drug eluting polymer matrices, which may be external to or within the sensor housing.
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Citations
40 Claims
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1. A sensor for measurement of an analyte in a medium within a living animal, the sensor comprising:
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a sensor housing; a light source within the sensor housing configured to emit excitation light; an analyte indicator covering a portion of the sensor housing, wherein the analyte indicator comprises one or more indicator molecules that reversibly bind the analyte, are positioned to be irradiated by the excitation light, and are configured to emit light indicative of the amount of the analyte in the medium within the living animal; a photodetector within the sensor housing, wherein the photodetector is sensitive to light emitted by the one or more indicator molecules and configured to generate a signal indicative of the amount of the analyte in the medium within the living animal; at least one drug eluting polymer matrix that covers a portion of the sensor housing and is separate and distinct from the analyte indicator, wherein the drug eluting polymer matrix (a) has a preformed shape and is applied to the sensor housing attaching the preformed shape to the sensor housing or (b) is applied to the sensor housing via dip coating or spray coating; and one or more therapeutic agents that reduce deterioration of the analyte indicator, are dispersed within the drug eluting polymer matrix, and include an anti-inflammatory drug. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A sensor for measurement of an analyte in a medium within a living animal, the sensor comprising:
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a sensor housing; an analyte indicator covering a portion of the sensor housing; a layer of a catalyst on at least a portion of the analyte indicator, wherein the layer of catalyst facilitates the conversion of hydrogen peroxide into water and oxygen; at least one drug eluting polymer matrix that covers a portion of the sensor housing and is separate and distinct from the analyte indicator, wherein the drug eluting polymer matrix (a) has a preformed shape and is applied to the sensor housing attaching the preformed shape to the sensor housing or (b) is applied to the sensor housing via dip coating or spray coating; and one or more therapeutic agents dispersed within the at least one drug eluting polymer matrix, wherein the one or more therapeutic agents reduce deterioration of the analyte indicator and include an anti-inflammatory drug. - View Dependent Claims (37, 38, 39, 40)
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Specification