Patent ID: 9278352
Filing Date: 2016-03-08
CPC Classification: B01L,F04B,F16K

Claim Text:
1. A microfluidic arrangement comprising: a substrate in which a microfluidic structure is formed, the latter having a plurality of parallel adjacent channels each having an open top side, and at least one common supply line, into which one end of the adjacent channels open, wherein a portion of each of the adjacent channels forms a cylinder section of a cylinder/piston arrangement, with the other end of the adjacent channels forming an aperture sized to receive a piston; a plurality of elongate pistons each associated with one of the plurality of channels and having a cross sectional area significantly less than the associated channel, wherein the pistons each have a free end which extends through the aperture into the cylinder section of one of the channels; a cover cooperating with the top side of the substrate and configured to sealingly isolate the parallel adjacent channels from the outside environment; and a sealing arrangement, which is stationary relative to the substrate, for sealing each of the pistons in an associated cylinder adjacent a second end of the channel; wherein the pistons are configured to move axially through the sealing arrangement, enabling the free end to move into or out of the cylinder section; and wherein the sealing arrangement comprises a continuous seal element which spans the plurality of adjacent channels and seals a plurality of the pistons.