Infusion pump flow rate control

A method of infusing fluid to a patient, the method comprising:

• at an infusion pump comprising:
• a housing including an elastic component;
• a first tube fluidically coupled to the housing via an outlet of the housing,
• an air filter fluidically coupled to a distal end of the first tube via an air filter inlet,
• a second tube fluidically coupled to the air filter via an air filter outlet,
• an outlet of the second tube fluidically coupled to one or more components;
• and
• a controller chip configured to operate a valve to control a first flow rate of the fluid;
• expanding the elastic component with the fluid to store potential energy generated by the fluid within the infusion pump;
• conducting, through the first tube, the fluid from the housing at the first flow rate based, in part, on a potential energy stored by the elastic component;
• expelling air from the fluid via one or more air vents of the air filter, wherein the air is expelled substantially upstream such that the fluid exiting the air filter is primed without air,
• adjusting the first flow rate of the fluid conducted from the housing, via the first tube, to a second flow rate, the second flow rate based, at least in part, on an inner diameter of the second tube;
• and
• distributing the fluid to a user via the one or more components.