you cannot vacuvan(trademark). all you can do is cram a cork in it. you can cram a vacuvan cork in it, but cannot pump it down.
i had some device that would allow me to pump air into the bottle, which kept the bubbles, but ruined the wine.
if there is such a thing that would seal, then replace the air with nitrogen, that would be best, but i am not famaliar with such a device for home use.