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LATERAL-FLOW POROUS MEMBRANE ASSAY WITH FLOW RATE CONTROL

  • US 20100159599A1
  • Filed: 12/18/2008
  • Published: 06/24/2010
  • Est. Priority Date: 12/18/2008
  • Status: Abandoned Application
First Claim
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1. A lateral flow assay device comprising:

  • a first substrate with a porous matrix adapted for conducting lateral flow, said substrate having;

    a sample contact zone and a detection zone as part of a buffer pad,a feedback zone as part of a wicking pad, anda flow-rate control zone situated downstream of said detection zone and between said detection zone and said feedback zone, physically separating said detection and feedback zones, within said flow-rate control zone are a number of flow-rate control mechanisms constituting either surface features or laminated substrate layers having a plurality or combination of different flow-rate control mechanisms in a body, such that said flow-rate control zone regulates development of a visual signal in said feedback zone, andeach of said zones is in fluidic communication with each other.

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