Optics: measuring and testing – Blood analysis
Reexamination Certificate
2006-08-15
2006-08-15
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
Blood analysis
Reexamination Certificate
active
07092078
ABSTRACT:
A blood sample containing leukocytes flows through a flow cell. A light source emits a light beam in a first direction. The light beam incident into the flow cell is scattered by the blood sample as scattered light. A first detector detects an intensity of forward small scattered light out of the scattered light. The first detector is arranged so as to have a maximum angle of a detection angle range for the forward small scattered light stemmed from the first direction at a position inside (outside) of the flow cell, which is 3.1 (4) degrees or less. A second detector detects an intensity of forward large scattered light out of the scattered light. The second detector is arranged so as to have a detection angle range for the forward large scattered light stemmed from the first direction at a position inside (outside) of the flow cell, which falls in a range from 8 to 12 (10 to 16) degrees. A processor classifies the leukocytes based on the detected intensity of the forward large scattered light and the detected intensity of the forward small scattered light.
REFERENCES:
patent: 3740143 (1973-06-01), Groner et al.
patent: 3781112 (1973-12-01), Groner et al.
patent: 4038556 (1977-07-01), Auer et al.
patent: 5125737 (1992-06-01), Rodriguez et al.
patent: 5747343 (1998-05-01), Tsuchiya et al.
patent: 6084670 (2000-07-01), Yamazaki et al.
patent: 6232125 (2001-05-01), Deka et al.
patent: 6320656 (2001-11-01), Ferrante et al.
patent: 6869569 (2005-03-01), Kramer
patent: 2003/0030783 (2003-02-01), Roche et al.
patent: 53-29794 (1978-03-01), None
patent: 57-30221 (1982-06-01), None
patent: 57-33050 (1982-07-01), None
patent: 58-43687 (1983-09-01), None
patent: 61-221633 (1986-10-01), None
patent: 2-3458 (1990-01-01), None
patent: 2-20053 (1990-05-01), None
patent: 3-12698 (1991-02-01), None
patent: 3-24626 (1991-04-01), None
patent: 5-43154 (1993-06-01), None
patent: 8-50089 (1996-02-01), None
patent: 8-50089 (1996-02-01), None
patent: 8-20442 (1996-03-01), None
patent: 8-128944 (1996-05-01), None
patent: 2772370 (1998-04-01), None
patent: 3350775 (2002-09-01), None
L.W.M.M. Terstappen, et al., Four-Parameter White Blood Cell Differential Counting Based on Light Scattering Measurements:, Cytometry 1988, Aug. 27, 1987, pp. 39-43.
B.G. De Grooth, et al., “Light-Scattering Polarization Measurements as a New Parameter in Flow Cytometry”, Cytometry 1987, Jun. 8, 1987, pp. 539-544.
R.M.P. Boornbos, et al., “White Blood Cell Differentiation Using a Solid State Flow Cytometer”, Cytometry 1993, Mar. 16, 1993, pp. 589-594.
Maruyama Tomonobu
Nagai Yutaka
Yamagishi Kazuo
Nihon Kohden Corporation
Punnoose Roy M.
Sughrue & Mion, PLLC
Toatley , Jr. Gregory J.
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