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Device for the stepwise transport of liquid utilizing capillary forces

  • US 20040096358A1
  • Filed: 11/13/2003
  • Published: 05/20/2004
  • Est. Priority Date: 11/14/2002
  • Status: Active Grant
First Claim
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1. A device for the stepwise transport of liquid, particularly of sample liquid to be analyzed, through several reaction chambers located in series in terms of flow while utilizing capillary forces, comprising a channel (14) through which liquid is transportable on the basis of capillary forces, and at least two closed vent holes (38,40,42) which are in fluid communication with the channel (14) at connection sites (22,24,26) spaced from each other along the channel (14), the connection sites (22,24,26) dividing the channel (14) into several channel sections (44,46,48), the fluid connections between a respective channel section (44,46,48) and the vent holes (38,40,42) allocated thereto being able to be opened separately, and at least one chamber (50,52,54) being arranged in the channel sections (44,46,48) upstream of each connection site (22,24,26) in flow direction.

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