EP0170375A2
Expired / Lapsed
EP
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Devices for use in chemical test procedures
Assignee: Alere Switzerland GmbH
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Filing: 1985-06-12
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Granted: —
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Expires: 2005-06-12
Abstract
Abstract A specifically-reactive sample-collecting and testing device possessing a cavity or cavities each having a dimension small enough to enable sample liquid to be drawn into the cavity by capillary action, wherein said cavity includes an electrode structure for making measurements of one or more electrically measurable characteristics of the sample, and wherein a surface of a wall of the cavity optionally also carries a coating of a material appropriate to the test to be carried out in the device.
Inventors
- 👤 Ian Alexander Shanks
- 👤 Alan Martin Smith
- 👤 Claes Ivan Nylander
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 03:23
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/63; G01N21/64; G01N21/645; G01N21/01; G01N21/03; G01N21/648; G01N21/75; G01N21/77; G01N21/7703; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/543; G01N33/54366; G01N33/54373; G01N2021/0346; G01N2021/7769; G01N2021/7786
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
79 words
A specifically-reactive sample-collecting and testing device possessing a cavity or cavities each having a dimension small enough to enable sample liquid to be drawn into the cavity by capillary action, wherein said cavity includes an electrode structure for making measurements of one or more electrically measurable characteristics of the sample, and wherein a surface of a wall of the cavity optionally also carries a coating of a material appropriate to the test to be carried out in the device.
Claim 2
Dependent Claim
79 words
A specifically-reactive sample-collecting and testing device possessing a cavity or cavities each having a dimension small enough to enable sample liquid to be drawn into the cavity by capillary action, wherein said cavity includes an electrode structure for making measurements of one or more electrically measurable characteristics of the sample, and wherein a surface of a wall of the cavity optionally also carries a coating of a material appropriate to the test to be carried out in the device.
Claim 3
Dependent Claim
21 words
A device according to claim 1, wherein an electrically conductive layer or layers line(s) the internal surface(s) of the capillary cell.
Claim 4
Dependent Claim
20 words
A device according to claim 2, wherein the layer(s) comprise a conductive coating which forms a pattern of conductive electrodes.
Claim 5
Dependent Claim
34 words
A device according to claim 1, 2 or 3, wherein the immobilised reagent carried on the surface of a wall of the cavity comprises a biochemical specific binding agent, e.g. an antigen or antibody.
Claim 6
Independent Claim
24 words
A device according to any of claims 1-4, in which a surface of the wall of the cavity also carries a releasable reagent coating.
Claim 7
Independent Claim
27 words
A device according to any of claims 1 to 5, wherein the walls of said cavity comprises glass or plastics material, e.g. soda glass or acrylic plastics.
Claim 8
Independent Claim
32 words
A device according to any of claims 1 to 6, comprising a bonded structure of plates cemented in spaced parallel relationship to leave a thin planar cavity of capillary dimensions between them.
Claim 9
Independent Claim
32 words
A device according to any of claims 1 to 7, comprising an external loading surface to which sample liquid can be applied and from which it can be drawn into the cell.
Claim 10
Independent Claim
107 words
A method of manufacturing specifically-reactive sample-collecting and testing devices, comprising the steps of (a) (optionally) forming an immobilised coating on the surface of a sheet material which is to provide part of a multiplicity of the devices, (b) forming a structure which together with said coated sheet material provides for each device of the multiplicity of devices a cavity of capillary dimension for collecting and retaining by capllarity a volume of sample liquid in contact with the reactive coating, (c) forming an electrode structure within each cavity, and (d) separating the sheet material into portions each providing one or a plurality of the sample-collecting and test devices.
Claim 11
Independent Claim
107 words
A method of manufacturing specifically-reactive sample-collecting and testing devices, comprising the steps of (a) (optionally) forming an immobilised coating on the surface of a sheet material which is to provide part of a multiplicity of the devices, (b) forming a structure which together with said coated sheet material provides for each device of the multiplicity of devices a cavity of capillary dimension for collecting and retaining by capllarity a volume of sample liquid in contact with the reactive coating, (c) forming an electrode structure within each cavity, and (d) separating the sheet material into portions each providing one or a plurality of the sample-collecting and test devices.
Claim 12
Dependent Claim
26 words
A process according to claim 9, in which the coating is divided into a pattern, e.g. of discrete portions, e.g. as a 2-dimensional array of patches.
Claim 13
Dependent Claim
22 words
A device according to claim 1, carrying a printed pattern of electrodes on a surface of a wall of the capillary cell.
Claim 14
Dependent Claim
26 words
A device according to claim 1, wherein said surface is a surface of a solid transparent material to enable optical measurements of the capillary cell contents.
Claim 15
Dependent Claim
27 words
Devices according to claim 1 and methods according to claim 9, characterised by any one or more of the several features of the accompanying description and drawings.
References Cited (Backward Citations)
No citation records indexed.
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