Antibody testing system
US5419870A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 23, 1992 |
| Grant date | May 30, 1995 |
| Priority date | — |
| Expiry date | Nov 23, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/805
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A device for performance of ligand-receptor assay methods for determining the presence of a liquid. The preferred ligand-receptor pair are antigen-antibody pairs. The device has a membrane having the receptor physically bound to its surface. The membrane is disposed at the top of a body member, and is affixed thereto by means for attaching, which is preferably a cap with a funnel depression. A porous means is disposed below the membrane to absorb liquid. Substantially all of the top surface of the membrane is exposed. The receptor site typically occupies only a portion of the top of the membrane, and in a preferred embodiment, a funnel member releasably attaches to the cap, thereby conveying the sample through only that area of the membrane having the receptor site. The device has a piston means disposed inside the body member, and in air-tight seal with the body member. Means to actuate the piston means are disposed outside the body member. The piston means creates a region of reduced pressure to urge the sample through the membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.