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EP0780679A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Analyzer for analyzing urine material components

Assignee: Sysmex Corp
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Filing: 1996-12-18
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Granted: —
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Expires: 2016-12-18
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Abstract

Abstract An analyzer for analyzing urine material components is provided, which comprises: asheathflow cell for forming a sample stream by surrounding a sample liquid containing preliminarily stained particles of the urine material components with a sheath fluid; a light source for illuminating the sample stream; a photodetecter section for detecting optical information from the illuminated material component particles; and an analyzing section for analyzing the material components on the basis of the detected optical information; the analyzing section including a parameter extracting section for extracting a fluorescent light emission duration Flw and a scatter light emission duration Fscw as parameters from the detected optical information, a distribution diagram generating section for generating an Fscw-Flw scattergram, and a judging section for judging whether or not a material component particle being analyzed is a cast, on the basis of location of a data point of the material component particle in the generated scattergram.

Inventors

  • 👤 Masayuki Katayama
  • 👤 Hiroyuki Seshimo
  • 👤 Masakazu Fukuda

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-05 23:33
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N15/00; G01N15/10; G01N15/14; G01N15/1404; G01N21/00; G01N21/75; G01N21/76; G01N2015/1019

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 157 words
An analyzer for analyzing urine material components, comprising: a sheath flow cell for forming a sample stream by surrounding a sample liquid containing preliminarily stained particles of the urine material components with a sheath fluid; a light source for illuminating the sample stream; a photodetecter section for detecting optical information from the illuminated material component particles; and an analyzing section for analyzing the material components on the basis of the detected optical information; wherein the analyzing section includes: a parameter extracting section for extracting a fluorescent light emission duration Flw and a scatter light emission duration Fscw for each of the material component particles as parameters from the detected optical information; a distribution diagram generating section for generating an Fscw-Flw scattergram; and a judging section for judging whether or not a material component particle being analyzed is a cast, on the basis of location of a data point of the material component particle in the generated scattergram.
Claim 2
Dependent Claim 51 words
An analyzer as set forth in claim 1, wherein the judging section further has a function for judging whether or not the material component particle regarded as the cast is an inclusion cast, on the basis of the location of the data point of the material component particle in the scattergram.
Claim 3
Dependent Claim 42 words
An analyzer as set forth in claim 1 wherein, if fluorescent light emission from a material component particle being analyzed is intermittent, the parameter extracting section sums up intermittent fluorescent light emission periods for determination of the fluorescent light emission duration Flw.
Claim 4
Dependent Claim 50 words
An analyzer as set froth in claim 1, wherein the judging section determines the location of the data point of the material component particle being analyzed in the scattergram, on the basis of the ratio Flw/Fscw of the fluorescent light emission duration Flw to the scatter light emission duration Fscw.
Claim 5
Dependent Claim 51 words
An analyzer as set forth in claim 4, wherein the judging section determines that the material component particle being analyzed is a cast, if the data point of the material component particle is located in an area of the scattergram where the ratio Flw/Fscw is lower than a first predetermined value.
Claim 6
Dependent Claim 48 words
An analyzer as set forth in claim 4, wherein the judging section determines that the material component particle being analyzed is a cast, if the data point of the material component particle is located in an area of the scattergram where the ratio Flw/Fscw is lower than 1.
Claim 7
Dependent Claim 60 words
An analyzer as set forth in claim 5, wherein the judging section determines that the material component particle being analyzed is an inclusion cast, if the data point of the material component particle is located in an area of the scattergram where the ratio Flw/Fscw is lower than a first predetermined value and a higher than a second predetermined value.
Claim 8
Independent Claim 20 words
A method of analyzing casts contained in urine using the analyzer defined in any one of claims 1 through 7.

References Cited (Backward Citations)

EP0242971A2 Cited
JPH04337459A Cited

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