Modulation of a response signal to distinguish between analyte and background signals
First Claim
1. A method, comprising:
- detecting an analyte response signal transmitted from within a lumen of subsurface vasculature inside a body, wherein the analyte response signal is indicative of interaction of functionalized particles with one or more target analytes present in blood circulating in the subsurface vasculature, wherein the functionalized particles each comprise an antibody covalently attached to a nanoparticle;
detecting an unbound particle signal transmitted from within the lumen of subsurface vasculature, wherein the unbound particle signal is indicative of functionalized particles that are not interacting with the one or more target analytes;
detecting a background signal;
applying a modulation to a portion of the subsurface vasculature, wherein the modulation alters the analyte response signal and the unbound particle signal, such that the analyte response signal is affected differently than the unbound particle signal and the background signal; and
differentiating the analyte response signal from the unbound particle signal and the background signal based, at least in part, on the modulation.
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Accused Products
Abstract
A method for modulating a response signal includes introducing functionalized particles into a lumen of subsurface vasculature, wherein the functionalized particles are configured to interact with one or more target analytes present in blood circulating in the subsurface vasculature; and non-invasively detecting the one or more target analytes. A response signal, which may include a background signal and an analyte response signal related to interaction of the functionalized particles with the one or more target analytes, is transmitted from the subsurface vasculature. A modulation configured to alter the response signal such that the analyte response signal is affected differently than the background signal may be applied to a portion of subsurface vasculature. Analyte detection may be achieved by differentiating the analyte response signal from the background signal.
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Citations
25 Claims
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1. A method, comprising:
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detecting an analyte response signal transmitted from within a lumen of subsurface vasculature inside a body, wherein the analyte response signal is indicative of interaction of functionalized particles with one or more target analytes present in blood circulating in the subsurface vasculature, wherein the functionalized particles each comprise an antibody covalently attached to a nanoparticle; detecting an unbound particle signal transmitted from within the lumen of subsurface vasculature, wherein the unbound particle signal is indicative of functionalized particles that are not interacting with the one or more target analytes; detecting a background signal; applying a modulation to a portion of the subsurface vasculature, wherein the modulation alters the analyte response signal and the unbound particle signal, such that the analyte response signal is affected differently than the unbound particle signal and the background signal; and differentiating the analyte response signal from the unbound particle signal and the background signal based, at least in part, on the modulation. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method, comprising:
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detecting an analyte response signal transmitted from an environment, wherein the analyte response signal is indicative of interaction of functionalized particles with one or more target analytes, wherein the functionalized particles each comprise an antibody covalently attached to a nanoparticle; detecting an unbound particle signal transmitted from the environment, wherein the unbound particle signal is indicative of functionalized particles that are not interacting with the one or more target analytes; detecting a background signal; applying a modulation to a portion of the environment, wherein the modulation alters the analyte response signal and unbound particle signal, such that the analyte response signal is affected differently than the unbound particle signal and background signal; and differentiating the analyte response signal from the unbound particle signal and the background signal based, at least in part, on the modulation. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 25)
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17. A device, comprising:
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a detector that detects; an analyte response signal transmitted from an environment, wherein the analyte response signal is indicative of interaction of one or more target analytes with functionalized particles present in the environment, wherein the functionalized particles each comprise an antibody covalently attached to a nanoparticle; an unbound particle signal transmitted from the environment, wherein the unbound particle signal is indicative of functionalized particles that are not interacting with the one or more target analytes; and a background signal; a modulation source that alters the analyte response signal and the unbound particle signal, such that the analyte response signal is affected differently than the unbound particle signal and background signal; and a processor that non-invasively detects the one or more target analytes by differentiating the analyte response signal from the unbound particle signal and the background signal based, at least in part, on the modulation. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification