Abstract: Pump includes a motor, a cam shaft coupled to the motor for rotation about a longitudinal axis of the cam shaft, the cam shaft having at least one radially-outward projection defining a helical engagement portion disposed along a length of the cam shaft, and a plurality of finger plates disposed along the length of the cam shaft, each finger plate mounted for movement in a transverse direction relative to the longitudinal axis of the cam shaft, each finger plate having an aperture defined therein to receive the cam shaft therethrough, each aperture having a substantially straight edge region and an opposing edge region. Engagement of the helical engagement portion with the substantially flat edge region during rotation of the cam shaft urges the finger plate transversely toward an extended position. Systems and techniques for delivering a beneficial agent to a user are also provided.

Abstract: Device for delivering a beneficial agent to a user includes a cassette including a cassette housing with a fluid reservoir, the cassette housing having a cassette base region, and a delivery tube. The device also includes a pump having a pump housing containing a pump assembly and having a receiving region to receive the cassette base region. The pump assembly includes a fluid drive component, a display, a plurality of input buttons. The pump assembly also includes a first processor coupled to the fluid drive component and the display and configured to reduce power to the fluid drive component and the display when the pump is in an inactive state, and a second processor coupled to the first processor and the plurality of input buttons, the second processor configured to provide an activation signal to the first processor when one or more of the plurality of input buttons is deployed.

Abstract: Device for delivering a beneficial agent to a user includes a cassette including a cassette housing with a fluid reservoir defined therein, the cassette housing having a cassette base region, and a delivery tube fluidly coupled with the fluid reservoir. The device also includes a pump having a pump housing containing a pump assembly and further having a receiving region to receive the cassette base region. The pump assembly includes a fluid drive component disposed proximate the receiving region, a main controller circuit board coupled to and configured to control the fluid drive component, and at least one secondary circuit board foldably joined to the main controller circuit board through a flexible substrate and disposed within the interior in a stacked relationship relative the main controller circuit board.

Abstract: Device for delivering a beneficial agent to a user includes a cassette including a cassette housing with a fluid reservoir, the cassette housing having a cassette base region, and a delivery tube. The device also includes a pump having a pump housing containing a pump assembly and having a receiving region to receive the cassette base region. The pump assembly includes a fluid drive component, a display, a plurality of input buttons. The pump assembly also includes a first processor coupled to the fluid drive component and the display and configured to reduce power to the fluid drive component and the display when the pump is in an inactive state, and a second processor coupled to the first processor and the plurality of input buttons, the second processor configured to provide an activation signal to the first processor when one or more of the plurality of input buttons is deployed.