Hi Patti .....
I did not read this article, but my best guess is that this child had an auditory brainstem implant. If you Google pediatric auditory brainstem implant you will find a number of articles dealing with this procedure. Basically, it implants a hearing device that transmits sound directly to the brainstem. It is not normal ear hearing but gives a definite new level of "hearing" for the profoundly deaf patient. NF2 patients who have had ANs treated on both sides, with complete hearing loss, are sometimes candidates for this procedure, as well.
For those of us with single side deafness and still have one intact hearing nerve, other options to send the sound to our good side, would most likely be the first choice.