Patent ID: 9603998
Date: 2017-03-28
CPC Classifications: A61M,G01R,Y10T

Claim:
1. A micro-fluidic chamber for use in a liquid medicament delivery system, the micro-fluidic chamber comprising: a bottom substrate and a top cover, the top cover being spaced from the bottom substrate so as to define a height of the micro-fluidic chamber; wherein, two or more walls or fillings are positioned in the micro-fluidic chamber, the walls or fillings forming a fluid channel between the walls or fillings, the fluid channel extending from an inlet conduit connected to an inlet of the micro-fluidic chamber to an outlet conduit connected to an outlet of the micro-fluidic chamber; wherein, each of the walls or fillings has a height less than the height of the micro-fluidic chamber so as to define a fluid gap between a top surface of each wall or filling and the top cover; and wherein, the dimensions of the walls or fillings and the micro-fluidic chamber are such that the fluid gap will be filled with liquid by capillary forces via the fluid channel when liquid is introduced into the micro-fluidic chamber; wherein, the top cover comprises a gas-permeable membrane which allows gas to freely pass through the gas-permeable membrane and prevents liquid from passing through the gas-permeable membrane.