OK, I guess the answer must be Surgiwrap.

It was mentioned in this thread:
http://neurotalk.psychcentral.com/thread167629.html

And then I noticed in the 2nd (earlier) article I cited above Dr. Sanders wrote, "Currently, in place of Seprafilm®, we are trying another material, Surgiwrap®, which is absorbed over several months, providing a significantly longer barrier. As yet we do not know how well it will perform compared to Seprafilm®."

So that must be it.

btw if you type "Surgiwrap" into google it suggests "Surgiwrap complications"...