Electrochemical sensor and method for manufacturing
First Claim
1. A sensor comprising:
- an elongated member including a dielectric core wherein a majority of the dielectric core is surrounded by an electrically conductive layer that forms a working electrode;
a sensing chemistry positioned adjacent to the electrically conductive layer;
a non-permeable insulating layer at least partially enclosing the elongated member and the sensing chemistry; and
channels defined between the insulating layer and the sensing chemistry, the channels extending along a longitudinal axis of the elongated member.
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Accused Products
Abstract
The present disclosure relates to a sensor including an elongated member including at least a portion that is electrically conductive. The elongated member includes a sensing layer adapted to react with a material desired to be sensed. An insulating layer surrounds the elongated member. The insulating layer defines at least one access opening for allowing the material desired to be sensed to enter an interior region defined between the elongated member and the insulating layer. The insulating layer has an inner transverse cross-sectional profile that is different from an outer transverse cross-sectional profile of the elongated member. The difference in transverse cross-sectional profiles between the elongated member and the insulating layer provides channels at the interior region defined between the insulating layer and the elongated member. The channels extend generally along the length of the elongated member and are sized to allow the material desired to be sensed to move along the length of the sensor.
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Citations
26 Claims
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1. A sensor comprising:
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an elongated member including a dielectric core wherein a majority of the dielectric core is surrounded by an electrically conductive layer that forms a working electrode; a sensing chemistry positioned adjacent to the electrically conductive layer; a non-permeable insulating layer at least partially enclosing the elongated member and the sensing chemistry; and channels defined between the insulating layer and the sensing chemistry, the channels extending along a longitudinal axis of the elongated member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A sensor comprising:
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an elongated member including a core, the majority of the core being surrounded by a layer that is electrically conductive, the elongated member including a sensing material adapted to react with a material to be analyzed; and an insulating layer that surrounds the elongated member, the insulating layer defining at least one access opening for allowing the material to be analyzed to enter an interior region defined between the elongated member and the insulating layer, the insulating layer having an inner transverse cross-sectional profile that is different from an outer transverse cross-sectional profile of the elongated member, the difference in transverse cross-sectional profiles between the elongated member and the insulating layer providing channels at the interior region defined between the insulating layer and the elongated member, the channels extending generally along a length of the elongated member, wherein the elongated member extends along a longitudinal axis of the sensor. - View Dependent Claims (21, 22)
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23. A sensor comprising:
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an elongated member including a dielectric core surrounded at least partially by an electrically conductive layer that forms a working electrode; a sensing chemistry positioned adjacent to the electrically conductive layer; an insulating layer at least partially enclosing the elongated member and the sensing chemistry; and channels defined between the insulating layer and the sensing chemistry, the channels extending at least partially along a length of the elongated member, wherein the inner cross-sectional shape of the insulating layer is circular and the outer cross-sectional shape of the elongated member is triangular.
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24. A sensor for sensing an analyte in a sample, the sensor comprising:
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a single sensing fiber defining a longitudinal axis, the single sensing fiber including an electrically conductive portion that surrounds the longitudinal axis and that extends along the longitudinal axis, the electrically conductive portion forming a working electrode, the single sensing fiber also including a sensing layer covering the electrically conductive portion, the sensing layer surrounding the longitudinal axis and having a longitudinal length that extends along the longitudinal axis; and a blocking layer that controls exposure of the sensing layer to the sample, the blocking layer having a side wall impermeable to the sample and configured to surround the longitudinal axis, the side wall and the sensing layer defining a longitudinal passage thereinbetween, the longitudinal passage having a passage length that extends along the longitudinal axis, the blocking layer having an open axial end for allowing the sample to enter the longitudinal passage and move longitudinally within the longitudinal passage to wet the longitudinal length of the sensing layer. - View Dependent Claims (25, 26)
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Specification