I was just wondering about this quote:

"Between in 2002 and 2004, we used a material like Saran wrap to cover the nerves to the arm to reduce scar tissue adhering to the nerves after surgery in 250 operations. This material was totally absorbed in the body in 4 weeks, so there was no foreign body remaining. When we analyzed the results with this material, we found that although it did reduce the amount of scar tissue making reoperations for recurrence easier, it did not significantly reduce the incidence of recurrent symptoms. Therefore, beginning in 2005, we changed the material to a similar one that now stays in the body for several months rather than just 4 weeks. By 2008, this newer material had been used in over 200 patients and to date the number of failures has been cut in half."

from: http://www.ecentral.com/members/rsanders/

Apparently in the earlier surgeries he used Seprafilm, based on this: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2527223/

However I can't find what he switched to. Does anyone know?