Apparatus and method for differentiating erythrocytes in urine

Details Apparatus and method for differentiating erythrocytes in urine Apparatus and method for differentiating erythrocytes in urine

1999-04-08

2000-09-12

Pham, Hoa Q.

Optics: measuring and testing

For optical fiber or waveguide inspection

356336, 356338, 356 39, 436 63, 435 39, G01N 1502

Patent

active

061185221

ABSTRACT:
An apparatus for differentiating erythrocytes in urine includes: a sheath flow cell for forming a urine specimen flow by surrounding a urine specimen with a sheath liquid, the urine specimen containing particles; a light application device for applying light to the urine specimen flow; a light detector for detecting a light signal emitted by each particle in the urine specimen flow; an identification device for identifying erythrocytes from the particles in the urine specimen flow in accordance with the detected light signal; a particle size distribution preparing device for preparing a particle size distribution diagram of the identified erythrocytes; a determining device for determining an origin of the erythrocytes in accordance with an erythrocyte size value at which an accumulated frequency of erythrocytes as counted from a smallest size in the particle size distribution diagram agrees with a preset value larger than half of a total accumulated frequency in the particle size distribution diagram; and an output device for outputting a determination result.

REFERENCES:
patent: 5325168 (1994-06-01), Nakamoto et al.
patent: 5408307 (1995-04-01), Yamamoto et al.
patent: 5731867 (1998-03-01), Katayama
patent: 5891733 (1999-04-01), Inoue
patent: 5917584 (1999-06-01), Li et al.

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