Interrupted-flow assay device
US5468648A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 7, 1993 |
| Grant date | Nov 21, 1995 |
| Priority date | — |
| Expiry date | Dec 7, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S436/81
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides chromatographic assay devices that can perform multiple assays simultaneously in the same test strip, as well as methods for their use. One of the assays can be an immunological assay to detect an antigen, such as human chorionic gonadotropin, while another assay can be a serological assay to detect an antibody, such as anti-rubella antibody. An assay device according to the present invention can comprise: (1) a first opposable component including at least one chromatographic medium having a specific binding partner to the first analyte and a specific binding partner to the second analyte immobilized thereto in separate, discrete, non-overlapping zones; and (2) a second opposable component including an absorber. The first and second opposable components are configured such that bringing the first and second opposable components into opposition causes the absorber to come into operable contact with at least one chromatographic medium so that the zone containing the specific binding partner to the first analyte is functionally divided from the zone containing the specific binding partner to the second analyte so that both analytes can be detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.