Patent ID: 9211538
Filing Date: 2015-12-15
Classification: B01L

Abstract:
1. Microfluidic storage device comprising: at least one supply chamber ( 5 ) for a fluid ( 1 ), the supply chamber being formed by bulging a foil ( 7 ) or diaphragm ( 19 ); an oblong transport path ( 9 ) which extends from the supply chamber ( 5 ) to an opening ( 11 ) of the storage device for transporting fluid from the supply chamber ( 5 ) to the opening ( 11 ) of the storage device in a longitudinal direction of the transport path ( 9 ); and an intended breaking point ( 10 ) that seals and separates an inner space of the supply chamber ( 5 ) from the transport path ( 9 ) for forming a chamber opening directly at the supply chamber ( 5 ), wherein the intended breaking point ( 10 ) is adjacent to the supply chamber ( 5 ) between the supply chamber ( 5 ) and the oblong transport path ( 9 ) over the entire width of the oblong transport path ( 9 ), wherein prior to forming the opening of the supply chamber ( 5 ) the transport path ( 9 ) has an inner volume of zero, and wherein the transport path ( 9 ) is expandable in accordance with the fluid flow emerging from the chamber opening formed by the breaking point ( 10 ) and progressively forms a transport duct ( 15 ) whereby the fluid is metered without bubbles out of the opening ( 11 ) of the storage device in response to pressure applied on the supply chamber to break the intended breaking point, wherein the transport path ( 9 ) has duct walls that rest against each other without a rupturable connection between them.