US Patent 9463889 Prefilled reservoir apparatus for ambulatory infusion device

Prefilled reservoir apparatuses for use in ambulatory infusion devices include a rigid top and a flexible bag that forms at least a portion of a reservoir containing a liquid medicament composition. The reservoir apparatuses include a septum assembly that includes a fluid flow path in communication with the reservoir and a self-sealing septum disposed in or over the fluid flow path. The septum is positioned and configured to be pierced by a cannula of a base of an infusion device when the reservoir apparatus is received by the base.