An integrated pump module comprises a rigid housing having a top, a bottom, and a fluid outlet. It further comprises a fluid reservoir, within the housing, comprising a top, a bottom, and collapsible sidewalls. Furthermore it comprises a pumping segment coupled between the fluid reservoir and the fluid outlet. The pumping segment is configured to transfer a medical fluid to the fluid reservoir and to transfer the medical fluid from the fluid reservoir to the fluid outlet, wherein the top of the fluid reservoir moves linearly as a volume of the medical fluid in the fluid reservoir changes.
