Device for extracting gas or liquid from microfluidid through-flow systems
First Claim
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1. A microfluidic device for separating liquid and gaseous phases in a microfluidic flow-through systems which can be operated independently of its orientation comprising:
- a hollow body connected to the microfluidic flow-through system such that the liquid to be transported is conveyed through the hollow body;
wherein the hollow body comprises an inlet opening and outlet opening for feeding in and discharging the liquid;
the hollow body defining a hollow space that is sized such that liquid and gas phases in the hollow space are prevented from mixing due to capillary and adhesion forces;
wherein the inlet opening and the outlet opening are connected to a feed tube, wherein the feed tube extends into a hollow space of the hollow body; and
wherein the feed tube at the inlet opening protrudes into the interior space of the hollow body such that it prevents a direct flow from the inlet opening to the outlet opening.
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Abstract
The invention concerns a device which is used to separate gas or liquid from microfluidic flow-through systems. The gas or liquid separation is achieved independently of the spatial orientation of the device. In addition the invention concerns a microfluidic flow-through system in which a device according to the invention enables bubble-free fluid transport.
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Citations
25 Claims
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1. A microfluidic device for separating liquid and gaseous phases in a microfluidic flow-through systems which can be operated independently of its orientation comprising:
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a hollow body connected to the microfluidic flow-through system such that the liquid to be transported is conveyed through the hollow body; wherein the hollow body comprises an inlet opening and outlet opening for feeding in and discharging the liquid; the hollow body defining a hollow space that is sized such that liquid and gas phases in the hollow space are prevented from mixing due to capillary and adhesion forces; wherein the inlet opening and the outlet opening are connected to a feed tube, wherein the feed tube extends into a hollow space of the hollow body; and wherein the feed tube at the inlet opening protrudes into the interior space of the hollow body such that it prevents a direct flow from the inlet opening to the outlet opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A microfluidic device for separating liquid and gaseous phases in a microfluidic flow-through system which can be operated independently of its orientation comprising:
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a hollow body connected to the microfluidic flow-through system such that the liquid to be transported is conveyed through the hollow body; wherein the hollow body comprises an inlet opening and outlet opening for feeding in and discharging the liquid; the hollow body defining a hollow space that is sized such that liquid and gas phases in the hollow space are prevented from mixing due to capillary and adhesion forces; wherein the inlet opening and the outlet opening are connected to a feed tube, wherein the feed tube extends into a hollow space of the hollow body; wherein the feed tube at the inlet opening protrudes into the interior space of the hollow body such that it prevents a direct flow from the inlet opening to the outlet opening; and a connecting system connected to the hollow body for conveying substances. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification