Diagnostic devices for the controlled movement of reagents witho

Details Diagnostic devices for the controlled movement of reagents witho Diagnostic devices for the controlled movement of reagents witho

Filed on

1992-05-21

Date issued

1995-10-17

Examiner

Housel, James C.

Patent Class

Chemical apparatus and process disinfecting, deodorizing, preser

SubClass

Analyzer, structured indicator, or manipulative laboratory...

SubSubClass

Calorimeter

Other Related Categories

422 56, 422 57, 422 61, 422 73, 422102, G01N 2185

Type

Patent

Status

active

Patent number

054588529

Description

ABSTRACT:
The assay devices, assay systems and device components of this invention comprise at least two opposing surfaces disposed a capillary distance apart, at least one of which is capable of immobilizing at least one target ligand or a conjugate in an amount related to the presence or amount of target ligand in the sample from a fluid sample in a zone for controlled fluid movement to, through or away the zone. The inventive device components may be incorporated into conventional assay devices with membranes or may be used in the inventive membrane-less devices herein described and claimed. These components include flow control elements, measurement elements, time gates, elements for the elimination of pipetting steps, and generally, elements for the controlled flow, timing, delivery, incubation, separation, washing and other steps of the assay process.

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patent: 5087556 (1992-02-01), Ertinghausen
patent: 5089391 (1992-02-01), Buechler et al.
patent: 5137808 (1992-08-01), Ullman et al.

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