Chemistry: molecular biology and microbiology – Apparatus – Including measuring or testing
Reexamination Certificate
2005-02-08
2005-02-08
Redding, David A. (Department: 1744)
Chemistry: molecular biology and microbiology
Apparatus
Including measuring or testing
C435S004000, C435S308100, C356S246000, C210S767000, C210S085000, C210S436000, C210S446000, C210S496000
Reexamination Certificate
active
06852527
ABSTRACT:
An apparatus and method for concentrating and measuring low levels of cells in biological samples. The apparatus, or concentration device, consists of two chambers with an optically level collection membrane intermediating between the chambers. The collection membrane filters the biological sample, trapping cellular elements of interest. A vacuum may be attached to the device to assist in filtration. The surface area of the collection membrane matches the view field of a standard imaging system and the device can be mounted on a standard microscope stage. All the cells in the sample volume are collected onto the membrane. The view field provides a fixed volumetric area for cell counting. Since the volume of sample tested is known, the total number of cells in the original sample may be calculated. The sample reservoir of the concentration device may also be used for sample preparation. The concentration device is fully-contained; therefore, the investigator does not have to handle the sample once it is placed in the sample reservoir.
REFERENCES:
patent: 3515490 (1970-06-01), Dreyfus et al.
patent: 4729949 (1988-03-01), Weinreb et al.
patent: 4787988 (1988-11-01), Bertoncini et al.
patent: 4849061 (1989-07-01), Relyea
patent: 5139685 (1992-08-01), de Castro et al.
patent: 5240861 (1993-08-01), Bieri
patent: 5252293 (1993-10-01), Drbal et al.
patent: 5266209 (1993-11-01), Knight et al.
patent: 5308483 (1994-05-01), Sklar et al.
patent: 5484572 (1996-01-01), Katakura et al.
patent: 5733507 (1998-03-01), Zakim
Website print out, “Cyto-Tek MonoPrep System” Sakura Finetek USA inc., 1 page.*
Brochure, StatSpin, an ARIS Company, Cytofuge, “Filter oncentrator Method”, 2 pages.
Chan Anthony
Rocco Richard M.
Inovyx, Inc.
Redding David A.
Schneck David M.
Schneck Thomas
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