Fluidic Device With Capillary Barrier
AssigneePurigen Biosystems, Inc.
InventorsSean Arin, Tony Makarewicz, Lewis Marshall, Klint Rose
Life of this patent
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Abstract
Provided herein is a fluidic device comprising a capillary barrier. A notch capillary barrier comprises two opposing ramps separated by a notch, optionally within a plateau region. An inset capillary barrier comprises a notch introduced into a wall of the fluidic channel. Such capillary barriers are useful for arresting menisci of liquids flowing through channels in which the capillary barriers are disposed. Liquids arrested on two sides of a notch face in a capillary barrier can be placed into fluid contact by application of negative pressure to the notch area sufficient to overcome the burst pressure on each side of the capillary barrier.
Claims25
A fluidic device comprising a notch capillary barrier or an inset barrier disposed in a fluidic channel, wherein:
- the notch capillary barrier comprises a first ramp and a second ramp, wherein the first and second ramps rise in opposite directions within the fluidic channel, and a notch positioned between the first and second ramps, wherein the notch comprises a base and two opposing faces;
- and
- the inset barrier comprises first and second base sections within the fluidic channel, and a notch positioned between the first and second base sections, wherein the notch comprises a notch base and two opposing faces.
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Dependencies are inferred from the claim text.