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US 2023/0273145 A1Published application
Method for preparing a working electrode
AssigneeRoche Diabetes Care, Inc.
InventorsBranislav Babic, Alexander Steck
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Abstract
The present invention relates to a method for the preparation of a working electrode, the method comprising application of a sensing material in several steps. Further, the present invention relates to an analyte sensor comprising the working electrode as well as to the use of the analyte sensor for detecting at least one analyte in a sample.
Claims15
A method for manufacturing a working electrode of an analyte sensor is provided, wherein the method comprises the following steps:
- (a) providing a substrate comprising
- a first side and a second side,
- at least one conductive material positioned on the first side of the substrate,
- (b) applying a sensing material to an application area on the first side of the substrate, and
- (c) obtaining the working electrode of the analyte sensor on the first side of the substrate, wherein the sensing material comprises
- at least one enzyme and
- at least one cross-linker,
- wherein the sensing material is applied in step (b) in a wet layer thickness of greater than about 20 μm in a single application, wherein step (b) is carried out via cannula-coating.
5 more elements
An analyte sensor comprising:
- (i) a substrate comprising
- a first side and a second side, and
- at least one conductive material positioned on the first side of the substrate,
- (ii) a working electrode comprising a sensing material, which at least partially covers the first side of the substrate,
- wherein the sensing material forms a layer on the first side of the substrate, wherein the layer of sensing material comprises edges generated by the application of the sensing material onto an application area on the substrate,
- wherein the sensing material comprises at least one enzyme and optionally at least one crosslinker,
- wherein the layer of sensing material has a dry average total thickness in the range from about 3 μm to about 8 μm, particularly from about 3 μm to about 6 μm and more particularly from about 4 μm to about 5 μm,
- and wherein the dry total thickness of the layer of sensing material along at least one of said edges is substantially the same or is increased compared to the dry average total thickness of the layer of the sensing material.
5 more elements
Dependencies are inferred from the claim text.