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Device for moving a target-bearing solid through a liquid for detection while being contained

  • US 5,364,591 A
  • Filed: 06/01/1992
  • Issued: 11/15/1994
  • Est. Priority Date: 06/01/1992
  • Status: Expired due to Term
First Claim
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1. A device for reacting while contained, a sample target with (i) a mobilizable particulate solid phase reagent having immobilized thereon a specific binding partner capable of specifically binding the sample target and (ii) a label reagent comprising a detectable label conjugated to a second specific binding partner capable of specifically binding the sample target in order to bind the label reagent to the mobilizable particulate solid phase reagent in an amount indicative of the sample target, the device comprising:

  • a) a first confined chamber comprising said mobilizable particulate solid phase reagent, said label reagent, and a pierceable cover capable of completely sealing said first confined chamber;

    b) at least a second confined chamber containing at least a wash liquid for washing any unbound label reagent from said mobilizable particulate solid phase reagent, wherein said second confined chamber further comprises an aperture and a piercing means; and

    c) confining means for confining and containing said sample target totally within said device when a sealed passageway is opened between said first and second confined chambers, said confining means comprising threaded means for removably holding together said first and second chambers in two spaced-apart orientations, one orientation being effective to keep said piercing means out of contact with said pierceable cover and the other of said orientations being effective to pierce said pierceable cover with said piercing means;

    wherein said sealed passageway is formed when said pierceable cover is pierced by said piercing means when said confining means is in said second orientation and said mobilizable solid phase reagent moves from said first confined chamber to at least said second confined chamber and said wash liquid washes off any unbound label reagent.

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