Device for analysis for constituents in biological fluids
US5435970A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1992 |
| Grant date | Jul 25, 1995 |
| Priority date | — |
| Expiry date | Jul 21, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/805
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention is a device for separating blood cells from biological fluids, preferably plasma from whole blood. The invention includes a nonabsorbent, porous unitary support, which is desirably made of glass fiber, and a blood cell binding composition, such as a lectin. This device provides a test kit for measuring a plasma analyte in whole blood. This kit separates plasma from the whole blood, exposes the plasma to reactants that detect an analyte, and provides a chromatic or other result in response to exposure to the analyte. A desirable embodiment of the device has a cover plate over the reaction pad to apply uniaxialy pressure to the reaction pad which controls migration of plasma. The invention includes a method for separating plasma from whole blood and a method for detecting an analyte.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.