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Digital bio disc (dbd), dbd driver apparatus, and assay method using the same

  • US 20090221431A1
  • Filed: 05/06/2006
  • Published: 09/03/2009
  • Est. Priority Date: 05/06/2005
  • Status: Active Grant
First Claim
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1. A digital bio-disc (DBD) comprising:

  • a sample inlet;

    chambers which reserve a buffer solution or a reaction solution;

    an assay site where bio materials are arrayed on a substrate;

    channels through which fluid flows between the sample inlet, the chambers, and the assay site;

    holes which connect the channels; and

    a plurality of valves which are used to open and close the holes, wherein the valve is constructed with a micro-bead, a permanent magnet disposed above the micro-bead and an moveable permanent magnet disposed under the micro-bead by which opening and closing of the valve is controlled, and wherein the valves have different radial distances from a center of the disc, provided that a portion of the valves which are opened at the same timing have the same radial distance.

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