Electrochemical sensor and method for manufacturing
First Claim
Patent Images
1. A sensor for sensing an analyte in a sample comprising:
- an outer member that is elongated along a longitudinal axis;
a spacer positioned within the outer member, the spacer defining first and second channels having lengths that extend along the longitudinal axis, the channels further having open longitudinal sides facing outwardly toward the outer member;
a first elongated member positioned within the first channel, the first elongated member defining a working electrode having a sensing layer; and
a second elongated member positioned within the second channel, the second elongated member defining a counter electrode, a reference electrode, or a combined reference and counter electrode;
the spacer being sized and configured to separate the first elongated member from the second elongated member and to provide open space extending along the longitudinal axis between the outer member and the first and second elongated members through which a test sample can flow, the sensing layer having an axial length that extends along a corresponding axial length of the spacer so that the sensing layer is accessible within the open space, thereby enabling the sensing layer to be wetted along its axial length by the test sample as the test sample moves longitudinally through the open space.
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Abstract
A sensor includes a sheath that is elongated along a longitudinal axis; a spacer positioned within the sheath and defining first and second channels having lengths that extend along the longitudinal axis; a first elongated member positioned within the first channel; and a second elongated member positioned within the second channel. The first elongated member includes an active surface forming a working electrode and the second elongated member including an active surface defining a counter electrode.
184 Citations
15 Claims
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1. A sensor for sensing an analyte in a sample comprising:
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an outer member that is elongated along a longitudinal axis; a spacer positioned within the outer member, the spacer defining first and second channels having lengths that extend along the longitudinal axis, the channels further having open longitudinal sides facing outwardly toward the outer member; a first elongated member positioned within the first channel, the first elongated member defining a working electrode having a sensing layer; and a second elongated member positioned within the second channel, the second elongated member defining a counter electrode, a reference electrode, or a combined reference and counter electrode; the spacer being sized and configured to separate the first elongated member from the second elongated member and to provide open space extending along the longitudinal axis between the outer member and the first and second elongated members through which a test sample can flow, the sensing layer having an axial length that extends along a corresponding axial length of the spacer so that the sensing layer is accessible within the open space, thereby enabling the sensing layer to be wetted along its axial length by the test sample as the test sample moves longitudinally through the open space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A sensor for sensing an analyte in a sample comprising:
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an outer member that is elongated along a longitudinal axis; a spacer positioned within the outer member, the spacer defining a channel having a length that extends along the longitudinal axis, the channel further having an open longitudinal side facing outwardly toward the outer member; a first elongated member positioned within the channel, the first elongated member defining a working electrode having a sensing layer; the spacer being sized and configured to provide open spacing extending along the longitudinal axis between the outer member and the sensing layer of the working electrode through which a test sample can flow, the sensing layer having an axial length that extends along a corresponding axial length of the spacer, and the sensing layer being wetted along its axial length by the test sample as the test sample moves longitudinally through the open spacing. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification