Fluidic signal control device

A control device for providing a fluidic signal to a medical infusion apparatus, the device comprising:

• (a) a housing (37, 38), wherein the housing defines a wall (49) enclosing a housing interior;
• (b) a pressure control sheet (36) comprising at least two projections (55, 56),
• wherein the pressure control sheet is formed from a deformable and resilient material,
• wherein at least a portion of the pressure control sheet (36) is positioned within the housing interior,
• and wherein the pressure control sheet is secured to and forms a seal with the housing such that the housing and the at least two projections together define a first chamber (40) and a second chamber (41),
• wherein the second chamber is independent of the first chamber,
• wherein the pressure control sheet is arranged so that fluid pressure within each chamber can be changed upon input from a user;
• and
• (c) a first fluid conduit member (39a) in fluid-flow communication with the first chamber and a second fluid conduit member (39b) in fluid-flow communication with the second chamber,
• wherein, in use, a first input from a user changes the fluid pressure within the first chamber which causes movement of fluid through the first fluid conduit member to provide a first fluidic signal, and a second input from a user changes the fluid pressure within the second chamber which causes movement of fluid through the second fluid conduit member to provide a second fluidic signal.