US Patent 7981105 Medication reservoir

A medication reservoir includes a reservoir. A swage is coupled to the reservoir enclosing an outer periphery of a septum to secure the septum to the reservoir. A base is attached to the reservoir secured around the swage, wherein the base includes at least one slot along sides of the base. At least one base engagement member is disposed on the sides of the base to engage a cap engagement member on a cap when the base is inserted into a lower end of the cap. The cap includes a needle located internal to the cap to pierce the septum and permit flow of liquid from the reservoir through the needle and into infusion set tubing and to a user.