I haven't used illustrator in about 5 years. So i'm not exactly sure how the program works. But it's a vector based program that draws everything out of lines and curves. So if Illustrator actually exports these lines, then is there an option to export as an .IGES. I use IGES format to transfer CAD files into MAYA.

Check to see if you can export to IGES. I'm not sure if you can with Illustrator.

Sorry if I was of no help.

Good Luck.