How to drain fluid if my incisions from lipo are closed? Should I reopen them?

It is common to have swelling after liposuction.  Think of the swelling like a sponge that soaks up water.  The swelling is in the tissues and not likely a collection that can be drained.  Opening the incisions will not do you any good and could in fact do harm.  Give it time and the swelling will get better.  If you have any specific concerns please see your plastic surgeon.

Usually, fluid only drains out of the incision for a day and then it seals.  The rest of the fluid will be absorbed in nearly all cases.  If you are doing post-liposuction massage, that will help.  It is rare to have to drain fluid from liposuctioned areas.  Keep your surgical follow up appointments and let your surgeon examine and advise you further, but there is likely little to worry about.  

I do not recommend opening any incisions follow up with your PS to discuss your concerns and he or she can advise you what to do.