Structures for precisely controlled transport of fluids
First Claim
Patent Images
1. A device for transport of fluids comprising:
- an inlet port;
a waste chamber, and an inlet to the waste chamber, wherein the inlet comprises a neck with one or more notch structured zones;
wherein an absorbent material is affixed to the notch structured zones.
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Abstract
The present invention relates to devices for efficient transport, transfer and movement of fluids. In particular, the invention provides fluidic micro-structures for controlled transport and movement of liquids in devices for analytical and other purposes. Devices of the invention include one or more features that can enhance performance of the fluid transfer, referred to as a pre-shooter stop, a butterfly structure, a cascade structure, a waste chamber inlet, a capillary driven sample inlet chamber, a capillary stop structure, a bifurcation flow-through structure, and a hydrophobic vent.
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Citations
42 Claims
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1. A device for transport of fluids comprising:
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an inlet port;
a waste chamber, andan inlet to the waste chamber, wherein the inlet comprises a neck with one or more notch structured zones;
wherein an absorbent material is affixed to the notch structured zones. - View Dependent Claims (2, 18, 20)
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3. A device for transport of fluids comprising:
an inlet port and a vent, wherein the vent is capped with an air-permeable, fluid barrier material. - View Dependent Claims (4, 5, 6)
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7. A device for transport of fluids comprising:
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an inlet port and a waste chamber; and
a system of channels for transport of fluid through the device, comprising a network of channels wherein a first single flow channel is providing a bifurcating flow path into two separate flow channels, wherein the two separate flow channels and the first single flow channel form substantially a Y-shape, and channels further bifurcate into a symmetrical delta, wherein the cross-sectional area of the first single flow channel and the combined cross sectional areas of the separate flow channels are substantially identical. - View Dependent Claims (8)
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9. A device for transport of fluids comprising:
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an inlet port;
a waste chamber; and
a flow channel for transport of fluid through the device;
the flow channel comprising a triangular structure, comprising steps or terraces of decreasing depth as the triangular structure expands, wherein the depth are of two or more different depths, thus increasing capillary force and allowing for homogeneous spreading or re-collection of a fluid stream. - View Dependent Claims (10)
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11. A device for transport of fluids comprising:
an inlet port;
an analysis area; and
a fluid flow channel, wherein the walls of the fluid flow channel comprise one or more pre-shooter stops which disrupt capillary forces and promote homogeneous fluid flow, wherein the pre-shooter stop comprises irregular shaped structures, preferably triangular or sawtooth shaped.- View Dependent Claims (12, 13, 15)
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14. A device for transport of fluids comprising:
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an inlet port;
a fluid flow channel; and
a sample inlet chamber comprising at least one vertical wedge shaped capillary notch which extends from a bottom of the chamber, to a top of the chamber where it is connected to the fluid flow channel, wherein the chamber fills the fluid flow channel driven by capillary action.
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16. A device for transport of fluids comprising:
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an inlet port;
one or more fluid flow channels; and
one or more flow disruption channels, wherein the disruption channel comprises a channel or space of low capillarity between a first and a second fluid flow channel of higher capillarity, wherein fluid flow ceases at the end of the first fluid flow channel.
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17. A device for transport of fluids comprising:
an inlet port; and
one or more fluid flow channel;
wherein the channels comprise one or more bifurcations from a source fluid flow channel, wherein each bifurcation comprises a bifurcation flow-through structure, comprising a curved “
V”
shaped structure, wherein the top of the “
V”
extends into the source fluid flow channel, thereby maintaining continuous capillary force.
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19. A device for transport of fluids comprising one or more of a pre-shooter stop, a butterfly structure, a cascade structure, a waste chamber inlet, a capillary driven sample inlet chamber, a capillary stop structure, a bifurcation flow-through mechanism, and a hydrophobic vent.
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21. A device for the analysis of fluids and other application, comprising:
a filling section, an analysis section, and a system of channels, wherein the sections are microstructured and comprise at least one fluidic structure for the controlled transport of fluid through the microstructured sections and system of channels. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
Specification