Medication bladder for medication storage

A disease management device comprising:

• a pump configured to deliver fluid to an injection site of a patient;
• one or more medication bladders configured to store the fluid prior to delivery to the injection site of the patient, each of the one or more medication bladders comprising:
• a rigid portion coupled to a flexible portion to form an at least partially sealed enclosure, the rigid portion comprising:
• an outlet port configured to allow an outward flow of the fluid from the at least partially sealed enclosure towards the pump,
• wherein the flexible portion comprises a flexible material configured to change shape so as to facilitate movement of the fluid within the at least partially sealed enclosure towards the outlet port of the rigid portion.

A medication bladder comprising:

• a rigid portion coupled to a flexible portion to form an at least partially sealed enclosure, the rigid portion comprising:
• an outlet port configured to allow an outward flow of fluid from the at least partially sealed enclosure;
• and
• the flexible portion, wherein the flexible portion comprises a flexible material configured to change shape so as to facilitate movement of the fluid within the at least partially sealed enclosure towards the outlet port of the rigid portion.