MICRO-FLUIDIC CHAMBERS FOR USE IN LIQUID MEDICAMENT DELIVERY SYSTEMS

摘要

A micro-fluidic chamber (1) for use in a liquid medicament delivery system has a rigid bottom substrate (11) and a top cover (12). The top cover (12) is spaced from the bottom substrate (11) so as to define a height (H1) of the chamber (1). One or more walls or fillings (13) are positioned in the chamber (1), the walls or fillings (13) defining one or more fluid channels (2) within the chamber, such that the fluid channel (2) extends from an in-let (21) of the chamber to an outlet (22) of the chamber. The top cover is a liquid-impermeable membrane. The one or more fluid channels (2) have the height (H1) of the chamber, and each of the walls or fillings (13) has a height (H2) less than the height (H1) of the chamber (1) so as to define a fluid gap (3) between a top surface (131) of each wall or filling (13) and the top cover (12). The dimensions (H1, H2) of the walls or fillings (13) and the chamber (1) are chosen such that the fluid gap (3) will be filled with liquid (4) by capillary forces via the fluid channel (2) when liquid (4) is introduced into the fluid chamber (1).