Disposable device for diagnostic assays

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United States of America Patent

PATENT NO 5503985
SERIAL NO

08179749

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A disposable diagnostic device and method of its use are provided. The device comprises a housing containing first and second flow paths orthogonal to each other. The first flow path commences at a sample addition port and continues through a transport channel which feeds sample to an incubation area by means of capillary flow. The incubation area comprises a signal producing system and is underneath an optically-clear window. The first flow path terminates in a top waste reservoir which receives sample and wash fluid. The second flow path begins on one side of the incubation area at an inlet port over a side reagent reservoir. Liquid flows along the second flow path from the side reagent reservoir across the incubation area into the side waste reservoir. The incubation area may comprise agitation means for homogenous dispersion of reagent into liquid. Various reagents of a signal producing system may be contained within the device and the necessary liquids added automatically by appropriate instrumentation, so as to have the assay carried out automatically, without technician involvement, providing an accurate and sensitive determination.

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Patent Owner(s)

Patent OwnerAddress
VENTURE LENDING A DIVISION OF CUPERTINO NATIONAL BANK & TRUSTTHREE PALO ALTO SQUARE PALO ALTO CA 94306

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cathey, Cheryl A 953A Roble Ridge, Palo Alto, CA 94306 5 317
Langford, Jeffrey D 1172 Terra Nova Blvd., Pacifica, CA 94044 22 359
Saul, Tom P.O. Box 372, Moss Beach, CA 94018 204 25542
Schwartz, Henry L 2579 Union St., San Francisco, CA 94123 19 921

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