Patent ID: 7455770

Claim:
An infusion pump for delivering a substance, comprising: a substrate having a plurality of microchannels formed therein, wherein each microchannel includes one or more communication ports for connecting the microchannel to a surface of the substrate; a first capping module coupled to the exterior surface forming a pump chamber on the exterior surface of the substrate in communication with a first microchannel via a first communication port and second microchannel via a second communication port, a first membrane coupled to the first capping module and forming an exterior wall of the pump chamber; a first external actuator disposed adjacent to and in contact with the first membrane for selectively deflecting the membrane to vary the volume of the pump chamber; a second capping module separately coupled to the exterior surface of the substrate and defining an inlet chamber on the exterior surface of the substrate forming an inlet fluid regulating device in communication with the pump chamber via a third communication port connecting the first microchannel to the exterior surface of the substrate, the inlet chamber controlling fluid flow into the pump chamber; and a third capping module separately coupled to the exterior surface of the substrate and forming an outlet chamber on the exterior surface of the substrate that defines an outlet fluid regulating device in communication with the pump chamber via a fourth communication port connecting the second microchannel to the exterior surface of the substrate, the outlet chamber controlling fluid flow out of the pump chamber.