Device for extracting gas or liquid from microfluidid through-flow systems
AssigneeRoche Diagnostics GmbH
InventorsPeter Kraemer, Carlo Effenhauser, Karl-Heinz Koelker, Gregor Ocvirk
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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.
Claims25
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.
A microfluidic device for separating liquid and gaseous phases in a microfluidic flow-through system 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;
- 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.
Dependencies are inferred from the claim text.