Patent ID: 8038663

Claim:
A method for priming an IV set for use in the administration of liquid, the method comprising: coupling a chamber inlet of a drip chamber to a source of the liquid; wetting a bubble isolation device with liquid, wherein the bubble isolation device is disposed within the drip chamber; substantially preventing air bubbles from reaching a chamber outlet of the drip chamber; permitting liquid to flow from the chamber outlet of the drip chamber through a tube having an inlet end coupled to the chamber outlet; restricting the venting of air from an end plug coupled to an outlet end of the tube as liquid flows through the tube so that the front of the liquid flow through the tube does not create bubbles; and preventing the liquid from exiting the outlet end of the tube with an air vent of the end plug; wherein the air vent has a porosity that limits the rate at which air is permitted to bypass the air vent, the method further comprising providing a first flow rate of fluid exiting the drip chamber based on the combination of the bubble isolation device and the drip chamber, and providing a second flow rate of fluid through the tube based on the porosity of the air vent, the first flow rate being greater than or about equal to the second flow rate.