A treatment system configured to treat a condition using a first fluid, the treatment system including a first reservoir configured to store a first fluid, a cannula insertion mechanism configured to insert a cannula into a user, the cannula in fluid communication with the first reservoir, a first rotatable shaft member configured to pull a first plunger disposed within the first reservoir and coupled to the first rotatable shaft member by a first flexible member, and a drive mechanism having a first expandable member configured to move from a first position to a second position to rotate the first rotatable shaft member to deliver the first fluid to the user through the cannula.