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Multilevel flow structures

  • US 6,623,860 B2
  • Filed: 10/10/2001
  • Issued: 09/23/2003
  • Est. Priority Date: 10/10/2000
  • Status: Expired due to Term
First Claim
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1. A microfluidics device comprisingfirst and second laminae, each having confronting inner surfaces at which the two laminae are bonded together, and opposite outer surfaces, a first channel microstructure having a channel formed in the first lamina adjacent the first-lamina inner surface, and one or more reservoirs in fluid communication with the first-lamina channel, a second channel microstructure having a channel formed in the second lamina adjacent the second-lamina inner surface, said first-lamina and second-lamina channels being enclosed by non-channel regions of the inner surfaces of the second and first laminae, respectively, and being in communication through a via formed where a region of the first-lamina channel overlaps a region of the second-lamina channel, and one or more openings formed in at least one lamina, communicating the outer surface of said at least one lamina with one or more reservoirs in the device, wherein liquid or liquid components contained in the first-lamina channel microstructure may be directed into the second-lamina channel microstructure through said via.

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