Drip chamber insert for automatically reducing fluid flow rate at infusion completion to keep vein open

A drip chamber assembly, comprising:

• a drip chamber, including a housing having an inlet for receiving an IV fluid, an outlet for dispensing the IV fluid to a patient, and a cavity defined by an inner surface of the housing;
• and
• a drip chamber insert disposed in the cavity, the drip chamber insert including:
• an elongate body portion and a base portion, the elongate body portion forming an upper surface of the drip chamber insert, and the base portion positioned downstream of the elongate body portion and forming an outlet orifice of the drip chamber insert fluidically coupled to the outlet of the drip chamber;
• a first chamber disposed in the elongate body portion and fluidically coupled to the cavity of the drip chamber by an inlet orifice through the upper surface, and fluidically coupled to the outlet of the drip chamber through the outlet orifice;
• and
• a second chamber disposed in the elongate body portion and fluidically coupled to the cavity of the drip chamber at the upper surface and to the outlet of the drip chamber through a low flowrate orifice.