Serial Electrochemical Measurements of Blood Components
First Claim
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1. A device configured to provide serial electrochemical measurements of blood components, the device comprising:
- a pair of anode and cathode elongate sensor electrodes, each comprising a distal, terminal tip comprising a surface catalyst which catalyzes a chemical reduction-oxidation (redox) reaction of a blood analyte yielding an amperometric measurement of the analyte; and
a pair of anode and cathode elongate antifouling electrodes, each comprising an uninsulated, distal, terminal tip, between which an electrical current flows,wherein the sensor and antifouling electrode tips are disposed on a planar surface, which may be flat or curved, and the antifouling electrode tips sufficiently surround one or both of the sensor electrode tips wherein when disposed in a vein the current causes chemical reactions in the blood around one or both of the sensor electrodes tips which reduces or prevents biofouling of the tip of one or both of the sensor electrodes.
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Abstract
Devices, systems and methods for measuring, and configured to measure, a blood analyte continuously or at intervals, the device comprising at least a first set of analyte sensing sensor electrodes configured for making electrochemical measurements of the analyte, and at least a second set of biofouling prevention electrodes in operable proximity to, and configured to prevent biofouling of, the first set of electrodes.
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8 Claims
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1. A device configured to provide serial electrochemical measurements of blood components, the device comprising:
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a pair of anode and cathode elongate sensor electrodes, each comprising a distal, terminal tip comprising a surface catalyst which catalyzes a chemical reduction-oxidation (redox) reaction of a blood analyte yielding an amperometric measurement of the analyte; and a pair of anode and cathode elongate antifouling electrodes, each comprising an uninsulated, distal, terminal tip, between which an electrical current flows, wherein the sensor and antifouling electrode tips are disposed on a planar surface, which may be flat or curved, and the antifouling electrode tips sufficiently surround one or both of the sensor electrode tips wherein when disposed in a vein the current causes chemical reactions in the blood around one or both of the sensor electrodes tips which reduces or prevents biofouling of the tip of one or both of the sensor electrodes. - View Dependent Claims (2, 3, 4)
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5. A device configured to provide serial electrochemical measurements of blood components, the device comprising:
a series of sensors, each sensor comprising a pair of elongate sensor electrodes, each comprising a distal, terminal tip comprising a surface catalyst which catalyzes a chemical reduction-oxidation (redox) reaction of a blood analyte yielding an amperometric measurement of the analyte at intervals, wherein the series is configured so that each of the sensors is exposed to blood for a predetermined time sufficiently limited to reduce or prevent biofouling of the tip of one or both of the sensor electrodes. - View Dependent Claims (6, 7, 8)
Specification