Patent ID: 9149804
Filing Date: 2015-10-06
Classification: B01L,B29L,B81C,F16K,G01F,Y10T

Abstract:
1. A microfluidic device, comprising: at least two layers arranged above one another, wherein at least one stipulated displacement volume is arranged in at least one of the at least two layers; an elastic diaphragm arranged between the at least two layers so as to be expandable into the at least one stipulated displacement volume; a cavity arranged in a first layer of the at least two layers, and pneumatically connected with the at least one displacement volume; and at least one duct arranged in a second layer of the at least two layers, the at least one duct configured to apply an external pressure supplied to the at least one duct to the diaphragm to expand the diaphragm into the at least one displacement volume, wherein expansion of the diaphragm into the at least one displacement volume induces a change in pressure in the cavity; wherein the diaphragm is configured to expand to at most a maximum expansion into the at least one displacement volume; and wherein the microfluidic device is configured such that, when the external pressure applied to the at least one duct is sufficient to expand the diaphragm to the maximum expansion into the at least one displacement volume, the cavity has a pressure that is independent of the external pressure applied to the at least one duct.