I don't know of any disc that are FDA approved for 2 level lumbar
I think the reason is they legally can't do two levels ADR in the Lumbar area in the US.
I know the latest disk that was FDA approved is the Active L and it is still only for one level.
http://www.fda.gov/MedicalDevices/Pr.../ucm455656.htm
When is it used? The activL® Artificial Disc is indicated for people who have fully formed and fully grown bones (are skeletally mature), have low back pain due to a problem with one lumbar disc (as determined by a doctor), have been diagnosed as having degenerative disc disease (DDD) in only one lumbar disc at either level L4/L5 or L5/S1 (as determined by a doctor), and have gone through at least six months of non-surgical treatment without relief.
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WakesurfMike
2007 Herniated L5/S1 Lifting changing X-ray tube at work. MRI PT/ Steroid shots/med
2009 switched to Remote/phone support
2010 workman’s comp lawsuit
2011 Microdiscectomy approved 80% pain relief
2011-2016 few flare ups but would always get beter after a few days.
6/2016 Pain is not going way 
07/2016 MRI, tramodol, Nucynta, Celebrex
08/2016 Regenerxx PL-Disc shot- didn’t work at all
10/2016 can't even stand or sit for work for 30 minutes before pain gets worse
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