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Fluid circuit components based upon passive fluid dynamics

  • US 6,591,852 B1
  • Filed: 01/30/2002
  • Issued: 07/15/2003
  • Est. Priority Date: 10/13/1998
  • Status: Expired due to Fees
First Claim
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1. A method for consolidating fluids from multiple microfluidic channels into a common consolidation well, chamber or channel, comprising the steps of:

  • c. injecting fluids into multiple microchannels of a microfluidic circuit;

    then d. applying pressure to fluid in each of said multiple microchannels sufficient to force said fluid through said microchannels until it stops at a passive fluid flow barrier formed at the junction of each of said microchannels with the common consolidation well, chamber or channel whereby fluid reaches but does not pass each passive fluid flow barrier; and

    then e. applying further pressure to fluid in each of said multiple microchannels sufficient to overcome said passive fluid flow barriers and permit said fluid to enter said common consolidation well, chamber or channel from each of said multiple microchannels;

    wherein said passive fluid flow barrier formed at the junction of each said microchannel with the common consolidation well, chamber or channel is sufficient to at least temporarily block the flow of fluid in said microchannel.

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