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EP0485368A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Capillary flow device

Assignee: Roche Diagnostics Corp
•
Filing: 1986-07-24
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Granted: —
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Expires: 2006-07-24
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Abstract

Abstract Novel methods and devices are provided involving at least one chamber, at least one capillary (12), and at least one reagent (16) involved in a system providing for a detectable signal. As appropriate, the devices provide for measuring a sample, mixing the sample with reagents, defining a flow path, and reading the result. Of particular interest is the use of combinations of specific binding pair members which result in agglutination information, where the resulting agglutination particles may provide for changes in flow rate, light patterns of a flowing medium, or light absorption or scattering. A fabrication technique particularly suited for forming internal chambers in plastic devices is also described along with various control devices for use with the basic device.

Inventors

  • 👤 Jimmy D. Allen
  • 👤 Michael E. Cobb
  • 👤 Robert S. Hillman
  • 👤 Laura J. Winfrey
  • 👤 Vladimir E. Ostoich
  • 👤 Ian Gibbons

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-05 11:33
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/483; G01N33/487; G01N33/49; G01N33/4905; B; B01; B01F; B01F25/00; B01F25/40; B01F25/42; B01F25/43; B01F25/431; B01F25/4316; B01F25/433; B01F25/4338; B01F33/00; B01F33/30; B01F35/00; B01F35/71; B01F35/717; B01F35/7172; B01L; B01L3/00; B01L3/50; B01L3/502; B01L3/5027; B01L3/50273; B01L3/502746; B29; B29C; B29C65/00; B29C65/02; B29C65/08; B29C66/00; B29C66/01; B29C66/05; B29C66/302; B29C66/3022; B29C66/30223; B29C66/50; B29C66/51; B29C66/54; B29C66/70; B29C66/71; G01N21/00; G01N21/75; G01N21/77; G01N21/82; B01F21/00; B01F2101/00; B01F2101/23; B01F23/00; B01F23/50; B01F23/56; B01L2200/00; B01L2200/06; B01L2200/0689; B01L2300/00; B01L2300/08; B01L2300/0809; B01L2300/0816; B01L2300/0861; B01L2300/0887; B01L2400/00; B01L2400/04; B01L2400/0403; B01L2400/0406; B01L2400/06; B01L2400/0694; B29C45/00; B29C59/00; B29C59/16; B29C65/48; B29C65/4895; B29C66/90; B29C66/95; B29C66/951; B29C66/9513; B29K; B29K2055/00; B29K2055/02; B29L; B29L2031/00; B29L2031/756; G01N15/00; G01N15/10; G01N15/1012; G01N2015/1016; G01N21/01; G01N21/03; G01N2021/0346; G01N35/00; G01N2035/00465; G01N2035/00514; G01N21/17; G01N21/47; G01N21/49; G01N33/50; G01N33/53; G01N33/543; G01N33/54366; Y; Y10; Y10S; Y10S366/00; Y10S366/03; Y10S435/00; Y10S435/81

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 69 words
A method for detecting agglutination of particles, which comprises: adding a fluid sample to a capillary pathway in a cartridge containing a diagnostic reagent that interacts with said sample to produce an agglutination system comprising said particles; passing a beam of light through said sample in said capillary pathway while said particles are in motion relative to said beam; and detecting in said fluid the presence of agglutinated particles.
Claim 2
Dependent Claim 52 words
The method according to claim 1 wherein said detection is by measuring an amount of fluctuation in light transmitted through said fluid sample caused by the presence of said individual particles relative to an amount of fluctuation in light transmitted through said fluid sample caused by the presence of said agglutinated particles.
Claim 3
Dependent Claim 13 words
The method according to claim 2 wherein the light source is a laser.

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