Self-venting diagnostic test device

Details Self-venting diagnostic test device Self-venting diagnostic test device

1989-03-17

1990-08-28

Nucker, Christine M.

Chemistry: analytical and immunological testing

Optical result

With reagent in absorbent or bibulous substrate

422102, 422101, G01N 3316

Patent

active

049525166

ABSTRACT:
A diagnostic test device for detecting the presence of a component in a liquid sample comprises a liquid impervious receptacle vented by a liquophobic element. The receptacle houses an absorbent which contacts and draws liquid through a microporous reaction medium, gas being displaced from the absorbent during the liquid absorption. The liquophobic element vents the displaced gas while ensuring the containment of liquids within the receptacle. The diagnostic test device may also comprise a cover having an aperture communicating with the microporous medium for the application of liquids thereon while providing a liquid impervious seal with a wall of the receptacle. The cover may also force the microporous medium into positive contact with the absorbent to promote absorption.

REFERENCES:
patent: 3068855 (1962-12-01), Furlong
patent: 4195058 (1980-03-01), Patel
patent: 4201548 (1980-05-01), Tomaoku et al.
patent: 4223089 (1980-09-01), Rothe et al.
patent: 4300910 (1981-11-01), Pannwitz
patent: 4340565 (1982-07-01), Kitajimi et al.
patent: 4554133 (1985-11-01), Leichnitz

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