Optical sensor for bandage type monitoring device
First Claim
1. A body-mountable device comprising:
- a flexible substrate, wherein the flexible substrate is configured to be mounted to a skin surface;
a sensor probe, wherein a first end of the sensor probe is attached to the flexible substrate, wherein a second end of the sensor probe is configured to extend beneath the skin surface to contact interstitial fluid, and wherein the sensor probe comprises an optical fiber extending from the first end of the sensor probe to the second end of the sensor probe;
an analyte-sensitive substance, wherein the analyte-sensitive substance is disposed at the second end of the sensor probe, and wherein the analyte-sensitive substance has an optical property affected by an analyte in the interstitial fluid;
a light detector; and
one or more electronic components disposed on the flexible substrate, wherein the one or more electronic components are configured to (i) operate the light detector to detect, via the optical fiber, a property of light emitted from the analyte-sensitive substance and (ii) indicate data related to the detected property of the emitted light.
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Accused Products
Abstract
A flexible, body-mountable analyte sensing device includes a flexible substrate configured for mounting to skin of a living body. The sensing device additionally includes optical fiber attached to the flexible substrate and configured to penetrate the skin such that an analyte-sensitive substance disposed on the end of the optical fiber can detect an analyte in interstitial fluid. A color, fluorescence intensity, or other optical property of the analyte-sensitive substance is related to the concentration or other property of the analyte. Light reflected, scattered, fluorescently emitted, or otherwise emitted from the analyte-sensitive substance is transmitted via the optical fiber and detected by a light sensor on the flexible substrate. Such emitted light can be emitted in response to illumination of the analyte-sensitive substance via the optical fiber. The sensing device is configured to wirelessly indicate detected concentrations or other information about the analyte in the interstitial fluid.
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Citations
20 Claims
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1. A body-mountable device comprising:
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a flexible substrate, wherein the flexible substrate is configured to be mounted to a skin surface; a sensor probe, wherein a first end of the sensor probe is attached to the flexible substrate, wherein a second end of the sensor probe is configured to extend beneath the skin surface to contact interstitial fluid, and wherein the sensor probe comprises an optical fiber extending from the first end of the sensor probe to the second end of the sensor probe; an analyte-sensitive substance, wherein the analyte-sensitive substance is disposed at the second end of the sensor probe, and wherein the analyte-sensitive substance has an optical property affected by an analyte in the interstitial fluid; a light detector; and one or more electronic components disposed on the flexible substrate, wherein the one or more electronic components are configured to (i) operate the light detector to detect, via the optical fiber, a property of light emitted from the analyte-sensitive substance and (ii) indicate data related to the detected property of the emitted light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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operating a body-mountable device, wherein the body-mountable device comprises; a flexible substrate, wherein the flexible substrate is configured to be mounted to a skin surface; a sensor probe, wherein a first end of the sensor probe is attached to the flexible substrate, wherein a second end of the sensor probe is configured to extend beneath the skin surface to contact interstitial fluid, and wherein the sensor probe comprises an optical fiber extending from the first end of the sensor probe to the second end of the sensor probe; an analyte-sensitive substance, wherein the analyte-sensitive substance is disposed at the second end of the sensor probe, and wherein the analyte-sensitive substance has an optical property affected by an analyte in the interstitial fluid; a light detector; and one or more electronic components disposed on the flexible substrate;
wherein the operating comprises;obtaining, by the one more electronic components operating the light detector to detect light emitted from the analyte-sensitive substance via the optical fiber, data related to a property of the emitted light; and indicating, by the one or more electronic components, the data related to the property of the emitted light. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method comprising:
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depositing a solution proximate to a first end of an optical fiber, wherein the solution comprises an analyte-sensitive substance and monomer units; and polymerizing the solution to form a polymer, wherein the analyte-sensitive substance is disposed within the formed polymer, wherein the formed polymer is permeable to the analyte, and wherein polymerizing the solution comprises transmitting light via the optical fiber to expose the solution to the transmitted light. - View Dependent Claims (20)
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Specification