Dual manifold system and method for fluid transfer
First Claim
1. A method for transferring liquid reagent from a first test site to a second test site on a target substrate using a dual-manifold assembly, comprising the steps of:
- positioning at least one source reservoir relative to an aspiration manifold, said source reservoir having at least one reagent therein, said aspiration manifold having at least one aspiration conduit;
positioning said target substrate relative to a dispense manifold having at least one channel terminating at an orifice wherein at least one of said dispense manifold channel and said aspiration conduit number at least two;
seating said aspiration conduit onto said source reservoir;
applying pressure to at least a first location to force said source reservoir to flow said reagent via said aspiration conduit to said dispense manifold; and
, applying pressure to at least a second location, said second location different from said first location, to force said reagent in said dispense manifold channel to eject a desired volume of said reagent to said second test site.
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Abstract
A dual-manifold assembly is provided for the rapid, parallel transfer of liquid reagents from a microtiter plate to a solid state microelectronic device having biological sensors integrated thereon. The assembly includes aspiration and dispense manifolds connected by a plurality of conduits. In operation, the aspiration manifold is actuated such that the aspiration manifold is seated onto an array of reagent-filled wells of the microtiter plate. The wells are pressurized to force reagent through conduits toward the dispense manifold. A pressure pulse provided by a standard ink-jet printhead ejects nanoliter-to-picoliter droplets of reagent through an array of printhead orifices and onto test sites on the surface of the microelectronic device.
43 Citations
9 Claims
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1. A method for transferring liquid reagent from a first test site to a second test site on a target substrate using a dual-manifold assembly, comprising the steps of:
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positioning at least one source reservoir relative to an aspiration manifold, said source reservoir having at least one reagent therein, said aspiration manifold having at least one aspiration conduit;
positioning said target substrate relative to a dispense manifold having at least one channel terminating at an orifice wherein at least one of said dispense manifold channel and said aspiration conduit number at least two;
seating said aspiration conduit onto said source reservoir;
applying pressure to at least a first location to force said source reservoir to flow said reagent via said aspiration conduit to said dispense manifold; and
,applying pressure to at least a second location, said second location different from said first location, to force said reagent in said dispense manifold channel to eject a desired volume of said reagent to said second test site. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification