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Integrated electrophoretic microdevices

  • US 5,770,029 A
  • Filed: 07/30/1996
  • Issued: 06/23/1998
  • Est. Priority Date: 07/30/1996
  • Status: Expired due to Term
First Claim
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1. A device for use in electrophoretic application, said device comprising a substrate having a generally planar surface on which are formed:

  • a main electrophoretic microchannel defining a main electrophoretic flowpath, said main electrophoretic microchannel being provided with means for applying an electric field to media contained therein;

    an enrichment channel defining an enrichment flowpath in fluid conducting relation with said main electrophoretic flowpath, said enrichment channel containing an enrichment medium for enriching a particular fraction of a sample; and

    means for transferring a portion at least of said fraction from said enrichment channel to said main electrophoretic flowpath;

    said device further comprising an outlet in fluid conducting relation to said enrichment flowpath for discharging away from said main electrophoretic flowpath a portion of said sample other than said portion of said fraction.

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