Element and method for performing biological assays accurately, rapidly and simply
AssigneeCardiovascular Diagnostics, Inc.
InventorBruce Oberhardt
Life of this patent
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Abstract
An element and method for easily performing liquid assays are disclosed. The element uses capillary action to draw a predetermined volume of a liquid sample into a reaction chamber charged with reagent, where reaction between the liquid sample and the reagent is monitored.
Claims25
An element for performing a liquid assay, said element comprising therein a channel structure defining a sample well and a reaction volume in communication with each other, said channel structure having a geometry causing a liquid sample placed in the said sample well to be drawn into and filling the said reaction volume via capillary action, wherein after the said reaction volume is filled the said liquid sample remains stationary therein.
A method for performing an assay, comprising:
- adding a sample to the sample well of an element comprising a channel structure defining a sample well and a reaction volume in communication with each other, wherein the said element contains a measured amount of at least one reagent situated in the said reaction volume;
- wherein a specific volume of the said biological sample is awn into the said reaction volume by capillary anion and contacts the said reagent to initiate a reaction between the said sample and the said reagent, and
- monitoring said reaction.
Dependencies are inferred from the claim text.